™
Digital Drive
U S E R ’ S
M A N U A L
Featuring Software Version 2.0
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Attention!
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Vorsicht!
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Attenzione!
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Table of Contents
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Before you Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Product Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
– Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
– Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
– Digital Drive Accessory Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
– Subwoofer Controls and Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installation Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Installation Step-by-Step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
– Subwoofer Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
– A Word About Subwoofer Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
– A Word About Interconnect Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
– A Word About Connecting More Than One Subwoofer . . . . . . . . . . . . . . . . . . . . . .10
Subwoofer Setup - OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
– ON-SCREEN Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Onscreen Programming and Setup – Step by Step . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Restoring Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
About Room Equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Protection Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Care of Your Digital Drive Subwoofer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Troubleshooting and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Appendix A: RS-232 Serial Overview and Commands . . . . . . . . . . . . . . . . . . . . . . . . .44
Appendix B: Summary of Special Remote Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Appendix C: What’s New in Release 2.0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Appendix D: Important Subwoofer Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
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Congr atulations!
Congratulations on your purchase of a Velodyne Digital Drive subwoofer system! Digital Drive
technology, universally acknowledged as the state-of-the-art in bass reproduction, is the result
of years of research and development, combining advanced Digital Signal Processing (DSP),
software, equalizer, audio filter, digital amplifier, digital servo control, and high-pressure
loudspeaker technologies. The result is a new subwoofer design that takes our traditionally
accurate low-frequency sound reproduction to new levels of precision, eliminates room
anomalies, and resolves many tradeoffs that encumber lesser subwoofer products.
This exceptional subwoofer will provide you with years of unparalleled listening pleasure. Enjoy!
Before you begin
Please observe the following instructions to insure safe and proper system operation.
Warning!
To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid
electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all
warnings on the equipment itself. There are no user serviceable parts inside. Please refer all
service questions to your authorized Velodyne dealer.
Prior to Installation
Please unpack the system carefully! This unit is heavy. Use caution when lifting or moving to
avoid injury. Remove all staples if used to seal the carton as they can scratch the cabinet.
Please save the carton and all packaging materials for future use. Packing this unit in any other
carton may result in severe damage when shipping. Please take a moment to record the serial
number and date/location of purchase in the space provided on the warranty card for future
Caution!
This subwoofer has electronics built into the cabinet. Do not place the cabinet next to
sources of heat such as furnace registers, radiators, etc. Do not place the unit near
sources of excessive moisture, such as evaporative coolers, humidifiers, etc. The power
cord should be routed in such a way that it will not be walked on, pinched, or
compressed in any way that could result in damaging the insulation or wire.
Regardless of where you install your Velodyne subwoofer, it must remain in an upright position
(woofer facing forward). Using, shipping, or otherwise storing the subwoofer in any other
position for an extended period of time may result in damage to the unit not covered
by warranty.
Certain types of televisions are particularly sensitive to stray magnetic fields. If your television
produces distorted colors after installing your subwoofer, simply increase the distance between
your television and the subwoofer, until normal color and operation is returned.
Important Note: Turn your subwoofer off before moving it!
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Pack age Contents
Your Velodyne Digital Drive Subwoofer consists of the following components:
• Digital Drive Subwoofer
• Power Cord
• Remote Control
• Digital Drive Accessory Kit, consisting of:
- Calibrated precision microphone
- Microphone windscreen cover
- Tabletop microphone stand
- Microphone stand adapter
- 25-foot video cable
- 25-foot audio cable
- 20-foot XLR microphone cable
Product Features and Controls
SUBWOOFER
Prominent features of your new Digital Drive Subwoofer include:
• Cone and Motor sizes:
- 10” (8” Piston Diameter) or 12” (9.7” Piston Diameter) cone with 310 oz. magnet or,
- 15” (12.7” piston diameter) or 18” (15.2” piston diameter) cone with 380 oz. magnet
• Built-in 1250 watt (RMS), 3,000 watt peak power high-efficiency Class-D amplifier
• Tandem 3” voice coils
• Multi-layer resin laminate cone
• High-excursion rubber surround
• Gain compression, anti-clipping circuit to prevent over excursion and amp clipping
• Fixed 80Hz high-pass crossover (RCA output)
• Balanced (XLR) input
• Line-level (RCA) inputs and thruputs
• Speaker-level inputs
• Variable volume control
• Frequency response of 20Hz - 120Hz +/-3dB
• Detachable 6-foot AC power cord
• Four rubber 1/4” --20” threaded support feet (aluminum with rubber inserts
on 15” and 18” models)
• On-screen controls:
- Auto-EQ
- Graphic or Parametric Equalizer controls for room EQ
- Adjustable (15 Hz - 199 Hz) low-pass crossover (defeatable)
- Multiple staggered low-pass crossovers (6dB/octave, initial to 48dB/octave, ultimate)
- Adjustable (15Hz - 35Hz) subsonic filter (defeatable)
- Multiple staggered subsonic filters (12dB/octave, initial to 48dB/octave, ultimate)
- Variable volume control
- Adjustable phase control (0° - 180° in 15° increments)
- Selectable polarity (+/-)
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- Theater/Music selection indicator (servo speed control)
- Signal sensing auto turn on/off/12 Volt trigger (defeatable)
- 6 presets for customized listening modes and EQ defeat
- Selectable default preset
- Switchable Velodyne logo indicator
- Night Mode maximum volume setting
- Save settings indicator
- Daisy chain feature
REMOTE CONTROL
The Velodyne Digital Drive infrared remote control allows you to set up, adjust, and reset your
subwoofer when connected to a television or a video monitor. You will also use your remote to
activate preset listening values, set the subwoofer’s volume up or down, mute the subwoofer,
or set a night operational mode.
Take care not to lose or misplace your remote control as adjustments to the subwoofer (with
the exception of volume control) can only be done using the remote.
NOTE: Two 1.5V AA batteries are required and included for operation of the
remote control.
External IR receivers may be ordered from either Velodyne or your local Velodyne audio
equipment dealer.
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REMOTE CONTROL BUTTONS
A brief description of each button on the remote control follows:
• PWR – Causes woofer to stand by if in “Active”
standby mode.
• NUMERIC KEYPAD – Used to enter SETUP mode
and for other functions.
• SET (+/-) – Increases or decreases the Q value
for a parametric EQ, or sets values on the
settings page.
• LIGHT – Turns the subwoofer’s front panel Velodyne
logo indicator on or off.
• NIGHT – Limits the peak output of the subwoofer,
and illuminates the logo’s amber underlining to
signify that the subwoofer is in night mode.
• VOL (+/-) – Raises or lowers the volume of your
subwoofer. The blue (Velodyne) light flashes more
quickly as the volume increases, and the light blinks
out the volume level after you stop adjusting it. For
example, for a volume of 34, you would see three
long blinks followed by four shorter ones.
• MUTE – Mutes and unmutes the subwoofer.
• TEST – Used to toggle between the settings screen
and the system response screen during setup.
• EXIT – To exit SETUP mode. The unit will ask if you
want to save settings before exiting.
• SELECT – To toggle field values.
• RESET – Used to reset volume to the last saved
setting on the main screen, and to defeat
crossovers on the settings screen.
• MENU – Enters SETUP mode from the
introductory screen.
• PRESETS – To access the five preset and one EQ
defeat listening modes. Initially set at the factory,
they are fully user adjustable. The blue (Velodyne)
light flashes the appropriate number of times to
indicate which preset you have selected (e.g. twice
for preset 2).
Figure 1: Velodyne Digital Drive remote control
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DIGITAL DRIVE ACCESSORY KIT
The Velodyne Digital Drive Accessory Kit contains the following six components:
• Calibrated precision microphone
• Microphone windscreen cover
• Tabletop microphone stand
• Microphone stand adapter
• 25-foot audio/video cable
• 20-foot XLR microphone cable
Ins tallation Ov ervie w
Your new Velodyne servo subwoofer provides for a number of installation options. Read all the
installation information below in order to determine which installation option is best for your
system. Remember to perform all installation procedures with subwoofer unplugged
until instructed to activate it!
SUBWOOFER CONTROLS AND PORTS
The Velodyne Digital Drive subwoofer is set up, configured, and adjusted by the controls, inputs,
and connections located on the rear panel of the unit. Figure 2 shows the location of each of
these important operational interfaces. Brief descriptions of each interface follow.
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Figure 2: Digital Drive Rear Panel Connections
(1)
(2)
(3)
POWER – Press the POWER switch to the ON position to activate the subwoofer. If
the unit is to be left unused for an extended period of time, move this switch to the
OFF position to prolong the life of the subwoofer.
117V~60Hz 15A – Connect your detachable AC power plug to this male interface
connection. The detachable cord allows for easy replacement should the original
be damaged.
RS-232 IN – Use this port to communicate with your computer (for software
updates), a touch panel remote control, or another upstream Digital Drive subwoofer.
See Appendix A for an explanation of the use of the serial port, available commands,
and their formats.
(4)
(5)
RS-232 OUT – Use this port to communicate with a second “daisy-chained” Digital
Drive subwoofer. Also, the 12V trigger feature requires a 12V trigger signal (polarity
irrelevant) across pins 7 and 9 of this port.
EQ Video Output – Used to display the video generated by the subwoofer. S-Video or
composite connections are available (composite cable included). NOTE: Only connect
to a single video output at a time.
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(6)
LFE INPUT – This XLR input jack receives the balanced LFE signal from your receiver
or processor.
(7)
(8)
MIC INPUT – This XLR input jack is for your XLR microphone cable.
EQ OUTPUT LEFT/RIGHT – Connect the audio cable from your accessory kit to these
jacks: white plug to LEFT, and red plug to RIGHT.
(9)
THRU – These RCA connectors are for sharing the same signal that goes into your
subwoofer with a second “daisy-chained” subwoofer. RCA input comes out of the
THRU jack.
(10) OUTPUT – These RCA connectors incorporate the use of an 80Hz 6 dB/octave slope
high pass crossover.
(11) INPUT LFE – This RCA input jack is for line-level connection.
(12) REMOTE SENSOR – This connection allows for hook-up of the optional remote control
receiver. With the optional receiver plugged in you will be able to utilize all functions
of the remote. Place the infrared receiver within direct line of sight from your usual
listening position.
(13) VOLUME UP/DOWN – Press the black UP pushbutton to incrementally raise your
subwoofer’s system volume; press the black DOWN pushbutton to incrementally
lower your subwoofer’s system volume. Note the use of these buttons during
software update.
(14) SPEAKER LEVEL INPUT RIGHT/LEFT – This speaker-level connector allows either
banana plug/jack or exposed wire/terminal connections.
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Ins tallation – Quick Start
To set up and take advantage of the EQ features in your new Digital Drive subwoofer in the least
amount of time, perform the following steps:
1. Unpack the subwoofer and connect the power cable.
2. Connect an LFE input cable from your receiver/processor to the input jack.
For other hookup options, see step 2, below.
3. Power up the unit and ensure that it is receiving signal from your receiver
(i.e. playing bass).
4. Connect the microphone (in the accessory kit) and place it in your favorite listening
position. Then press 3-2-1 on the remote.
5. The unit should emit 25 “sweep” tones then restart and play normally.
6. Adjust the subwoofer’s volume to taste.
7. Enjoy!
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Ins tallation – Step-by-Step
To ensure a quick and flawless installation of your Velodyne Digital Drive unit, follow these
numbered setup instructions in their exact order.
SUBWOOFER CABLE CONNECTIONS
Make all necessary cable connections between the applicable subwoofer connector port and
your particular home electronics equipment in the following order:
1. Insert the detachable AC power cord into the 117V~, 60Hz, 15A power interface port on
the rear panel of your subwoofer. Plug the male end of the cord into a convenient wall outlet.
2. Provide signal to your subwoofer through one or more of the following connections (refer to
your receiver/processor owner’s manual for available inputs to the subwoofer):
a. LFE INPUT (RCA, the RED jack at location 11 on Figure 2) – This is the most common
input cable connection. Make a connection between this input and the LFE output or
the subwoofer output of your receiver or processor; OR
b. LFE INPUT (XLR, location 6 on Figure 2) – Make a connection between this input and
the balanced LFE outputs of your receiver or processor; OR
c. INPUT, LEFT and RIGHT (location 11 on Figure 2) – Make a connection between these
inputs and the stereo outputs of your receiver or processor; OR
d. SPEAKER-LEVEL INPUT (location 14 on Figure 2) – Make a connection between these
inputs and the left and right speaker connections on your receiver or processor. Make
this connection by either inserting speaker wire into the correct binding post terminals
or by removing the banana plug jack caps and inserting banana plug wire into the jacks.
NOTE: Refrain from routing connections permanently at this time to accommodate subwoofer
room placement as described below.
3. Establish the line-level connection (optional). Connect to a pre-amplifier’s main outputs and
returning them to your amplifier inputs. When installed in this fashion, your satellite
speakers will be crossed over at 80Hz, which removes the lower bass from your amplifier
and speakers, enabling them to do a better job reproducing high frequencies. By utilizing
this method, you will have a bi-amplified system, gaining improved power and headroom for
your system.
A Word About Subwoofer Outputs
The Velodyne subwoofer is designed to operate using the full range audio signal for input when
using the digital built-in crossover. Most processors/receivers have a “subwoofer out” jack that
is internally filtered and designed to be used with a conventional amplifier and speaker. In some
rare cases, combining both an external crossover and the one internal to the subwoofer may
result in low output and increased noise. In these installations you may need to bypass the
internal crossover in either the processor or Velodyne subwoofer. In some installations, simply
setting one crossover to a higher frequency (such as 120Hz) will restore maximum
performance. To bypass the subwoofer’s internal crossover when the unit is being fed a low
pass signal from another crossover, refer to the SETUP instructions at step 14, below.
Note: If not using an external crossover, you should use the built-in crossover for
optimal performance.
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4. Referring to Figure 2, Items 5 and 8, connect the audio/video cable between your
subwoofer (EQ OUTPUT VIDEO/LEFT/RIGHT yellow, white, and red respectively) and your
electronics (receiver, processor, TV, etc.). Insert the color-coded cable plugs into the correct
EQ OUTPUT receptacle – the yellow plug into the VIDEO jack, the white plug into the LEFT
jack, and the red plug into the RIGHT jack. The opposite ends of this cable should be
connected to your receiver/processor. The yellow VIDEO cable goes to an available
composite video input (e.g. aux), and the white/red AUDIO (L&R) cables go to a
corresponding audio input. Consult your receiver/processor and/or TV owner’s manual for
more information.
NOTE: Make sure the audio output goes into your AUDIO system, not your TV! The subwoofer
will generate test tones used to match the subwoofer to your satellites and to correct for room
anomalies that need to be played over your main audio system.
5. Insert the XLR microphone cable’s 3-pin male plug into the MIC INPUT jack (location 7 on
Figure 2) on the back panel of the subwoofer. For DD-15 and DD-18 units, a microphone
jack is also located on the front of the unit for convenience.
6. Slide the microphone (male connector end first) down through the open, circular sleeve of
the tabletop microphone stand. Position this assembly at a desired listening position from
your subwoofer.
NOTE: The Digital Drive Accessory Kit includes a microphone stand adapter (1/2”-27 thread)
for use with professional mounting stands. Be sure to first remove the inner thread piece
(3/8”-16) before using.
7. Connect the XLR microphone cable’s female jack end with the male connector end of
the microphone.
8. Sheath the microphone pickup with the foam windscreen cover as a protection against dirt
and airborne contaminants.
A Word About Interconnect Cables
When installing your new Velodyne subwoofer using the line level connections, you should always
use shielded phono cables. There are many quality cables available today, most any of which
will work perfectly well. We do recommend that you keep the length of cable as short as
possible to avoid any potential noise problems.
When routing cables, try to keep them away from equipment that generates significant noise
such as industrial or digital equipment.
A Word About Connecting More Than One Subwoofer
If you are connecting more than one DD subwoofer to your system, you will connect them
together in a “daisy-chain.” Choose one sub for all the connections described below (we’ll call
this the “master” sub), and then connect an RCA jack from the THRU RCA jacks of the “primary”
to the input jacks of the “slave” sub. You will also need to obtain a “Mouse Extension” serial
cable (available at any computer store, from your Authorized Velodyne dealer, or from Velodyne
directly) and connect the RS-232 OUT port of the primary sub to the RS-232 IN port of the
secondary sub. Then, all runtime commands directed at the primary sub (such as select preset,
volume, etc.) will be communicated to the secondary sub automatically through the serial cable.
If you have more than two subs in your setup, simply continue the daisy chain from the
secondary sub to the next sub in the line (using both RCA and serial connections) and so on.
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NOTE: When a DD subwoofer detects an incoming RS-232 command, it reverts to “Slave
Mode”. This means that the subwoofer will no longer accept IR commands. To reestablish
normal operations, remove the RS-232 cable and power cycle the unit.
Note that the daisy chain connection ONLY allows the woofers to communicate basic “run-time”
commands such as volume and preset. We recommend the following sequence when setting
up daisy-chained subs.
1. First, connect only the master sub to the system. Do not connect the thru or serial
cables at this time.
2. Establish the crossover, phase, and other settings EXCEPT the EQ on the master sub
(see setup steps 1 – 17 starting on page 17). Note the low pass crossover, phase
and polarity settings, then save.
3. Connect the video out of the slave subwoofer, go to the settings screen, establish the
low pass crossover, slope, phase, polarity, and night mode settings from the master
subwoofer, then save settings. Repeat for each slave subwoofer in your system.
4. Connect the microphone to the slave subwoofer and use the “self-EQ” feature
(described below) to establish room EQ for that subwoofer.
5. Repeat steps 3 and 4 for each slave subwoofer in your system.
6. Reconnect the video out to the master subwoofer, and reconnect the thru and serial
cables so that the master and slave subwoofer (s) are daisy chained.
7. EQ the primary subwoofer (see steps 8-25 starting on page 20). Self-EQ is NOT
recommended for the primary subwoofer.
8. Setup is complete!
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Subwoofer setup – Ov ervie w
BEFORE YOU BEGIN: Once the installation has been completed, note that you can use your
subwoofer without performing ANY of the setup steps below. Simply use the remote to set the
volume, and select the preset that most closely matches your listening material, and enjoy!
However, to reap the maximum benefits of Digital Drive technology, read on!
Special note for 230V users with video problems
For 230-volt Digital Drive subwoofers, the default video mode is NTSC video format. If your TV
is NTSC compatible, you will have no trouble with this mode. However, certain TVs (especially
older ones) may require PAL or SECAM video. To switch from NTSC to PAL/SECAM mode,
press the DOWN ARROW four times followed by RESET. The subwoofer will restart in
PAL/SECAM video mode. To revert back to NTSC, restore defaults by pressing 8-9-0 while on
the cover screen.
SELF-EQ
To perform an abbreviated setup of your Digital Drive subwoofer using the self-EQ function,
position the microphone in your listening position and connect it to the subwoofer as shown in
the installation instructions. Then, press 3-2-1 on the remote. The subwoofer emits 25
“sweep tones” that are detected by the microphone and then automatically EQs your subwoofer
accordingly. After the sweep tones are completed, the unit automatically saves settings and
returns to normal operation. Once the self-EQ process starts, pressing the RESET button can
interrupt it.
Caution: Self-EQ resets all EQs for all presets to their default values. DO NOT use the self-EQ
feature if you plan to adjust the DD subwoofer manually as described below.
ON-SCREEN Setup
This section describes adjusting the onscreen settings of your Digital Drive subwoofer. You will
be performing all the setup functions using the buttons of your Velodyne-supplied remote control
and seeing the results on your TV screen. Words in all uppercase letters in the setup
instructions (e.g., SELECT, MENU, etc.) identify the specific remote button to be pressed or
selected, or the field on the screen you should be paying attention to. Remember to point the
remote control at the subwoofer, not your TV!
Use the UP, DOWN, RIGHT, and LEFT directional arrow buttons that surround SELECT to
navigate the fields of the setup screens. Settings are typically changed using the SELECT key,
followed by the UP and DOWN arrow keys. Alternatively, the SET +/- buttons can be used to
change settings. A screen field highlighted in reverse video indicates your current location on
the screen. Holding down the UP, DOWN, RIGHT, or LEFT arrow keys causes the remote to
repeat and you can then rapidly move through fields to arrive at the desired one. You should
be able to perform most of the setup process by using the four arrow keys and the
SELECT button.
Following is an overview of the screens you will be using to set up your
Velodyne Digital Drive subwoofer.
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Figure 3: Introductory Screen
See Figure 3. This the Introductory screen. Notice that as you change settings (such as preset,
volume, etc.) they are shown on this screen.
You enter setup mode by pressing MENU and entering the code 12345. Upon successful entry
of this code, the system takes you to the EQ Setup screen, as shown in Figure 4.
HINT: You do not need to press MENU to begin entering the setup code. You can begin the
12345 sequence by pressing the number 1 on the remote.
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Figure 4: EQ Setup screen
The EQ Setup screen includes a “SYSTEM RESPONSE” “sweep” window and a graphic equalizer.
You use these settings to equalize your room. The graphic equalizer features 8 bands, each of
which can be used at its current frequency, or can be infinitely adjusted to the frequency and
EQ you desire. Each preset can have its own EQ settings.
By navigating the cursor to the NEXT field and pressing SELECT, the following screen appears:
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Figure 5: System Settings Screen
From this screen the crossover, subsonic filter, phase, polarity, theater/music, volume, and
other settings can be set, as well as specifics for each preset, if desired.
Your DD unit comes with 6 presets, four of which are preprogrammed at the factory. The
Setup setting is used to initially set the crossovers, slopes, phase, polarity, and volume for all
presets. Then, each preset can be individually adjusted if desired. The presets are as follows
(they are also labeled on the remote):
1. Action/Adventure
2. Movies
3. Pop/Rock
4. Jazz/Classical
5. Custom (off from the factory, or flat)
6. EQ Defeat
All six presets contain the following fields:
• Low Pass Crossover Frequency and Slope – Adjust the upper limit of your subwoofer’s
frequency response. Select a crossover setting, in increments of 1, between 15Hz and
199Hz and slope at 6, 12, 18, 24, 30, 36, 42 and 48 dB/octave.
• Subsonic Filter Frequency and Slope – Set your subwoofer’s subsonic filter (low
frequency limit), in increments of 1, between 15Hz – 35Hz and slope at 6, 12, 18, 24,
30, 36, 42 and 48 dB/octave.
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• Phase – Set the phase (delay) of the subwoofer’s output signal, 0 to 180 degrees
(adjustable in 15 degree increments).
• Polarity – Set your subwoofer’s polarity by toggling between positive (+) or negative (-).
This reverses the phase 180 degrees.
• Volume – Each preset can have its own volume separate from the master volume shown
in the setup column. When the master volume changes, the preset volume changes in
lock step.
• Contour Frequency – This allows you to set a frequency to boost or cut the signal to
your subwoofer in response to specific types of source material. These have been
preset at the factory according to the presets above, but any or all can be customized
to taste.
• Contour Level – This indicates the amount of boost or cut at the frequency specified in
the contour frequency. Again, this has been preset at the factory but can be adjusted
to taste.
• Theater/Music Indicator. This setting affects the distortion limiting capabilities of the
digital servo system and allows you to choose between a “theatrical” subwoofer, a
“musical” subwoofer, or somewhere in-between. The scale is 1 for maximum theater
(least amount of servo gain) and 8 for maximum music (most amount of servo gain).
Other controls on the Setting Setup Screen:
• Auto On/Off Active/Inactive – When active, this control automatically shuts the
subwoofer off after approximately 15 minutes without any source signal. The woofer
automatically wakes upon receiving input signal again.
• Night Mode Maximum Volume – When the NIGHT mode button is pressed on the
remote, this setting is invoked. Night mode is indicated by the amber bar underlining
the VELODYNE logo. The subwoofer will not play louder than this volume level until the
night mode is defeated.
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Onscreen Progr amming and Setup – Step by Step
The following steps take you though a typical Digital Drive setup procedure.
1. Push the POWER switch on the subwoofer’s rear panel to the ON position.
2. Make sure your receiver/processor is on and the volume control is set to minimum.
3. If you haven’t already done so, establish the crossover settings for your main speakers.
Generally, if your satellites can be crossed over at 80Hz (that is, accurately reproduce
frequencies to this level) it is an ideal setting. However, some satellite speakers are only flat
to 120Hz or even higher. Remember that the higher the subwoofer is crossed over (to
match the satellite crossover settings), the more likely it is to become directional (that is,
you can tell where the bass is coming from). Again, consult your processor and speakers
owner’s manuals for more information.
4. Select the source on your receiver/processor that the DD subwoofer audio output is
connected to. Input should be configured for stereo.
5. Set the video input where you connected the video output as the active TV image. The
introductory screen with the Velodyne logo and “Velodyne Digital Drive” should now appear
on your TV screen, as follows:
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6. Press MENU and enter 12345 to enter the EQ setup screen, as follows:
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Upon pressing 5, you should see the following screen:
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7. Use the DD remote control to MUTE the subwoofer.
8. Raise the volume on your receiver/processor until the DD test sweep (a tone that sweeps
from 20Hz up to 200Hz) can be heard from your system’s speakers. Continue to raise the
volume until the “SYSTEM RESPONSE” graph on your TV shows the response of your full
range speakers (the right hand portion of the graph) at approximately 76 dB (or a
comfortable listening level). This is shown below:
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9. Now use the DD remote control to unmute the subwoofer, then use the volume up and down
keys to match the level of the subwoofer to your full range speakers. That is, the “SYSTEM
RESPONSE” graph should be relatively flat (although at this point there will be peaks and
valleys that will be addressed next). The screen should now look something like this:
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About Room Placement.
Room placement is the first step in equalizing your sub(s) to your room. Subwoofers operate
at extremely low frequencies, which are primarily omni-directional (that is, you can’t usually tell
where they are coming from). Placing the sub in the room is a trial and-error process. The
goal is to find the best location(s) that result in the minimum number and severity of valleys in
the frequency response curve. This is because peaks in the response curve are easy to
address with an EQ, but valleys typically are not easily fixed because they represent a
cancellation of soundwaves that more power to that frequency will usually not fix.
As a general rule, placing the sub(s) in the corner(s) of a room will add to the overall amount
of bass the subwoofer produces, but that bass may not necessarily be as low in distortion
compared to a position away from the corner. The worst location for a subwoofer is typically
far away from any walls, and close to the center of your room. Avoid these locations when
possible. When using a pair of Velodyne subwoofers in stereo, it is preferable to place each
subwoofer by the satellite of the same channel. If moving your satellites is an option, they too
can contribute to peaks and valleys and should be likewise placed through experimentation.
10. Now you can begin moving your subwoofer around the room to find the best placement
position. You need to find the best tradeoff between appearance and room response. Be
sure the room is in the configuration that it will be in when you typically listen e.g. doors
opened or closed, curtains open or closed, etc. As you move the subwoofer, refer to the
“SYSTEM RESPONSE” graph to minimize peaks and especially valleys in the response curve.
As an example, you might find a location that smoothes the graph as follows:
NOTE: The subwoofer should be turned off when physically moving the unit.
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TIP: Here’s an easy way to find the optimal position for the subwoofer without moving it to
multiple positions in the room. Start by setting the subwoofer up in your listening position.
Now, move the microphone around the room and observe the response graphs for different
room positions. The best position has the fewest valleys and the overall smoothest response.
NOTE: If you are constrained in room location positions, don’t worry! By following the setup
steps below, Digital Drive gives you maximum flexibility to make the most out of any subwoofer
placement position.
11. Now that the room location has been chosen, turn off the subwoofer and the rest of your
system, permanently route the wiring, and reconnect to your subwoofer.
12. Reactivate the subwoofer and your system and ensure that the system works as before.
13. Use the MENU button to get to the EQ setup screen (after entering the 12345 code), and
then position the cursor over the NEXT field on the EQ setup screen. Press SELECT, and
observe the Setting Setup screen, as follows:
You are now ready to adjust the crossover, subsonic filter, volume, and phase controls of your
DD unit.
NOTE: if the remote seems intermittent or unresponsive, be sure you are pointing it at the
subwoofer and not your TV!
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AND REMEMBER: Use the UP, DOWN, RIGHT and LEFT directional arrow buttons that surround
SELECT to move through the fields of the setup screen, and change settings by using the
SELECT button, then the UP and DOWN arrow keys. Or, you can skip the SELECT button and
change values using the SET +/- buttons.
14. When setting the low pass crossover, begin by setting the frequency and slope to the same
values as the crossover settings on your receiver/processor (for example, many units have
a large/small satellite setting). Again, consult your receiver/processor owner’s manual for
more information. You will notice that changing these values “cascades” the values out to
all the presets. That is because once these values are set, they will not normally change
from preset to preset, but if later you wish to customize a specific preset you can. An
example of a crossover changed to 100Hz is shown below:
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TIP: To see immediate feedback on the effects of your changes to the “SYSTEM RESPONSE”
graph, press the TEST button. The following screen appears:
Press TEST again to return to the System Settings screen.
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NOTE: Some receivers/processors supply a signal that is already crossed over – i.e. just the
bass frequencies. If this is the case, you will want to defeat the subwoofer’s low pass crossover.
To defeat the low pass crossover, press the SELECT key, then the RESET key. The following
screen appears:
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NOTE: Your goal in setting the low pass crossover is to make the crossover point (the point at
which the subwoofer meets the main speakers in terms of frequency) as smooth as possible.
Another big factor in smoothing this point in the curve is phase, discussed in step 17, below.
15. Now adjust the low pass crossover slope. This setting is shipped at 24 dB/octave – a
fairly steep slope to prevent the subwoofer from playing upper frequencies that might call
attention to it during normal operation. At this stage, set the crossover settings under the
column entitled SETUP. Reduce the slope if necessary and use the TEST button to return
to the EQ setup screen and observe the “system response” graph – it should be as flat as
possible at the crossover frequency and immediately to the left and right of it. Too gradual
a slope (e.g. 6 dB/octave) may produce a bump at the crossover frequency, and too steep
a slope may produce a dip.
16. You should normally not need to adjust the subsonic filter. Do so only if there are anomalies
in the very lowest frequencies that you cannot address using the normal EQ process as
described below.
17. Next adjust the phase and polarity settings. Phase is in effect a short delay in the
o
reproduction of the audio signal. The polarity reverses the phase (i.e. 180 shift).
Adjusting phase can change the dynamics of standing waves and frequency cancellations
in the room. Sometimes it may be useful to adjust the phase if there is a particularly
difficult peak or valley to eliminate, and/or your room placement options are limited. Phase
and polarity are also important tools to match your subwoofer to your main speakers. You
will often see a dip or peak in the crossover frequency between your subwoofer and main
speakers. Rather than correcting this dip with an EQ, try adjusting the phase and polarity
settings. It is very common for the main speakers to interact with the subwoofer to
diminish or accent frequencies near the crossover point (since this is the point where both
the subwoofer and the speakers are playing the same audio information). Don’t be afraid
to experiment to find the perfect match between your subwoofer and main speakers!
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NOTE: The following step shows using the graphic equalizer (using fixed frequencies and Q) to
equalize the room.
18. Next, return to the EQ setup screen and adjust the graphical EQs to eliminate peaks and
valleys from the room response. Use the right and left arrow keys to position the cursor
over the EQ you wish to adjust. If you see a peak in the response at, say, 25Hz (this would
be evident in the “SYSTEM RESPONSE” graph), simply navigate the cursor to the EQ that
corresponds to 25Hz and use the up or down arrow keys to “slide” the EQ up or down. An
example of this is shown below:
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19. Continue this process until the “SYSTEM RESPONSE” graph shows a +/– 3 dB response
across the bass frequencies (that is, up to about 120Hz.). Note that this does not
necessarily mean a “ruler flat” response; +/- 3dB is typical for an optimized response
curve.
An “equalized” room is shown below:
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20. To have the unit EQ itself, select the auto EQ option, as shown:
When this mode is selected, the unit automatically resets all EQs to their original frequencies,
and Q settings (but retains any level changes you may have made). The AUTO EQ proceeds
until you either save settings, press SELECT to return to manual EQ, move the cursor off the
AUTO EQ field (in which case the field automatically reverts to MANUAL), or twenty-five sweeps
have occurred.
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NOTE: The following steps use the parametric equalizer to achieve room equalization. If you do
not wish to use the parametric EQ feature, skip to step 24.
21. To use the parametric EQ feature, position the cursor over the EQ and press the SELECT
button. The values for that particular EQ appear on the right hand side of the screen. The
following screen is shown:
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22. To manipulate a parametric EQ, you can now use the LEFT and RIGHT arrow keys to move
the frequency up and down, and the SET + and SET – keys to change the Q value. Use the
UP and DOWN arrow keys to adjust the level of the EQ as before. A selected EQ that has
been moved, with its level raised and Q adjusted is shown below:
23. To unselect the EQ, press SELECT again, then use the right and left arrow keys to position
the cursor on another EQ if desired, and repeat step 22, until the room is equalized.
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24. Once the room has been equalized, you may want to return to the Settings Setup screen
(by positioning the cursor over the NEXT field on the EQ setup screen and pressing SELECT)
and review/modify the presets. This step is required ONLY if you wish to customize the
presets. Before doing this, LOCK the Setup column by positioning the cursor over the
LOCK screen and pressing SELECT. This screen is shown below:
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You can change any value in the presets column, then use the TEST key to review the curve
with these settings active. This is shown below.
Features of each preset are:
EQ. There can be a completely different set of EQs for each preset. Simply select the
preset you want on the “SYSTEM RESPONSE” screen where indicated.
Volume (+ or – from SYS). This setting deviates the preset’s volume from the
established system volume of the subwoofer. So, if you found during setup that 30 was
a good setup volume for the subwoofer, then if you increased the volume for preset one
to 40, the 40 volume would be invoked when preset one were selected for listening. If
the system volume is changed (using the VOL + or VOL – keys on the remote), the preset
volume is adjusted in lock step with the system volume.
Crossover, subsonic filter, phase and polarity settings. Normally these will not
change from preset to preset. However, it may be that you are using different satellites
for different listening modes and wish to set these settings individually for a specific
preset. Note that the “setup” values cascade to the individual values for the presets, but
you can change all the individual values if desired.
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Contour frequency and level. These act as an “extra” EQ that can be used to
manipulate the frequency contour of your subwoofer when this particular preset is
invoked. For example, notice that preset one raises the level by 3 dB at 35Hz – this is
to accommodate action/adventure movie content.
Theater/Music indicator. This setting allows you to choose between a “theatrical”
subwoofer, a “musical” subwoofer, or somewhere in between. The “musical” setting
represents maximum gain from the digital servo, and thus the least amount of distortion
possible from the subwoofer. The “theatrical” setting relaxes the servo a bit to allow a
bit more distortion to enter the playback, making an overall louder and more impressive
sub for explosions and other theatrical content. The scale is 1 for theater (least amount
of servo gain) and 8 for music (most amount of servo gain).
EQ curves. Each preset can have its own unique set of EQ settings. You can select
which preset you want to EQ by either positioning the cursor on a preset column on the
settings screen then pressing TEST, or by selecting the preset you want on the graph
screen, with at the preset field, or by pressing one of the preset buttons on the remote.
You will note that presets 1-4 are shipped from the factory with predetermined settings, preset
5’s contour is set at 0 level from the factory and customizable by the user (i.e. flat), and preset
6 defeats all the EQs to demonstrate the effect the equalization of the subwoofer has on
room response.
NOTE: you can select which preset is invoked at system startup by selecting it as shown:
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24. As a final thought on matching your Digital Drive subwoofer to your room, don’t forget the
“objective listening” test. That is, make sure the unit sounds good to you! Often, you may
want to add a bit more bass than what would normally be considered “flat” even after you
remove the major peaks and valleys to achieve a flat frequency response. This is quite
normal because human hearing “rolls off” rapidly below 100Hz, causing the bass not to
sound as loud. This is the basis for the “loudness contour” switch included on many
receivers and preamps. In order for the bass to sound flat, especially at lower levels, you
may need to increase the subwoofer volume in relation to the satellite speakers. An
increase of about 5-8 dB is usually adequate. There are two methods to accomplish this:
1. Raise the internal volume control for the subwoofer in your surround receiver or
processor, or,
2. Raise the volume of your Digital Drive subwoofer after you have finished your room
equalization and other settings. You can observe this difference by watching the
“SYSTEM RESPONSE” graph as you raise the volume.
Of course, all hearing is different, so be sure to perform the above step “to taste”.
Your setup is complete! You are now ready to save settings. You can press the EXIT button
on the remote, or position the cursor over the SAVE/EXIT field on the screen and press select.
The system responds with the following screen:
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By pressing the SELECT button, you tell the system to save your settings and return to the
introduction screen. Selecting NO returns without saving (i.e. whatever previous settings were
in effect will be used), and CANCEL keeps you in setup mode.
When the unit saves settings, you will see the video flicker and you may hear a slight tick in your
main speakers. This is normal behavior.
NOTE: The Digital Drive subwoofer stores all of its settings in internal “Flash” memory. This
memory persists even if the woofer is turned off, loses power, or undergoes a programming
update, so you need not worry about losing your customized settings.
Res toring Defaults
There is a feature in Digital Drive that allows you to restore the factory defaults. On the Main
Screen, simply press the 8, 9, and 0 buttons in sequence. If you are successful, the unit will
flicker the video and then restore the main screen. The system responds with a defaults
restored message, as shown below:
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Runtime Mode
During normal use of your Digital Drive Subwoofer, you can use the preset buttons to invoke
certain presets, use the volume control to raise or lower the subwoofer’s volume, use the light
and night buttons to control the logo light and night mode, respectively, and use the mute button
to mute the subwoofer. These settings are shown on the introductory screen, as follows:
NOTE: If you change the volume on your DD subwoofer but later wish to return to the volume
you established during setup (that is, as of your last save), press the RESET button.
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Runtime Inactive Modes. The following screens show other runtime messages indicating that
the subwoofer is inactive. The screen below shows the message displayed when the auto-off
feature has engaged (that is, the subwoofer has not had any input signal for 15 minutes:
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The following screen is displayed when the POWER button is depressed, powering down
the subwoofer:
Note that in this mode the POWER button must be pressed again to reactivate the unit.
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The following screen is shown when the unit is waiting for a 12-volt trigger to activate:
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A bout Room Equalization
This section gives some background on room equalization. As a sub plays in a room, the
reflections of the sound waves off the walls create “standing waves,” that is, places in the room
where certain frequencies are louder and others are diminished. In addition to standing waves,
every room will also have locations where cancellations of the sound waves are like black holes
that no amount of attenuation can fill. Thus as a general rule it is better to “cut down” a peak
of response rather than to “boost up” a valley (i.e. possible black hole) of response.
In general, you are looking for a frequency response that is +/– 3 dB at all frequencies (it is
highly doubtful that your ear can tell a response that is any better than this). The response will
always roll off at the low end (according to the settings of the subsonic filter), and there should
be no dip or peak at the crossover frequency with the satellites. While the goal is perfectly flat
response, this may not be possible in the higher frequencies of the subwoofer’s response due
to peaks or valleys introduced by the satellites.
Protection Circuitry
Your new subwoofer is equipped with special protection circuitry to provide maximum
performance with greatest reliability.
The unit is protected against:
1. Overdriving the speaker or amplifier.
2. Overheating the amplifier.
3. Excessive drop in power line voltage.
The first type of protection circuitry that prevents overdriving of the speaker or amplifier
operates constantly without being audible under most situations. In some extreme situations
(sustained high output levels such as pro sound usage), the unit may shut down momentarily.
This indicates operation of the thermal or under voltage protection circuitry. If this should
happen, you should reduce the volume setting or shut the unit off until normal operating
conditions return. You may also want to plug the unit into a different wall outlet, as dropping
power line voltage will be most noticeable under strenuous conditions.
Care of Your Digital Subwoofer
Do not use any harsh detergents or chemicals to clean the cabinet. Abrasives, detergents, or
cleaning solutions may damage the finish on the cabinet. We recommend using a damp cloth
to clean the cabinet. During normal conditions, your new subwoofer may be left on continuously
without any problems. The unit is equipped with a signal-sensing turn on/off that will
automatically turn on the unit when a signal is present at the inputs and turn off the unit after
several minutes when there is no longer any signal at the inputs. If you plan to leave the
subwoofer unused for an extended period of time, we recommend that you unplug the unit.
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T roubleshooting and Service
If you should experience a problem with the operation of your subwoofer, please check all of the
following before seeking service. Following is a simple troubleshooting guide to assist you.
1. Verify unit is plugged in and power outlet used is active.
2. Is the unit receiving an input signal from your source? A good way to test this is to
connect the EQ audio out to the LFE input on the back panel, then enter setup mode (see
Step 6). The woofer should play the sweep tone used for room EQ.
3. Have all controls on subwoofer (volume, crossover, phase, etc.) been properly set?
4. If unit has been running at high levels for an extended period of time, one of the protection
circuits may be engaged.
• Has the built-in amplifier overheated?
• Is your power line voltage sagging under heavy use?
If the protection circuitry is active, the unit may cycle on and off until operating parameters
return to normal. Under more serious conditions, the unit may shut off completely. Normal
operation will return upon cooling, but you may be required to unplug the unit momentarily.
The following conditions require service by a qualified technician:
1. The power cord has become damaged.
2. The unit does not appear to operate normally or exhibits a marked change
in performance.
3. The unit has been exposed to water.
4. Some part of the cabinet or circuitry is physically damaged.
Software Updates
At the heart of Digital Drive functionality is the customized software. From time to time,
Velodyne will publish updates to the Digital Drive software. To determine if your unit is a
candidate for a software upgrade, observe the software version number in the upper left corner
of the Main Screen (e.g. V2.0). Then visit www.velodyne.com and observe the version number
of the software available for download. If this version is higher than the version in your unit,
you may want to upgrade the software.
To upgrade the software, you will need an IBM-compatible PC with an available RS-232 9-pin
serial port, and a male-to-female “Mouse Extension” serial cable. This cable is available from
any computer store, your local Velodyne dealer, or directly from Velodyne. Next, proceed to the
Velodyne web site and click on the link to download the software. Upon download, run the
software and it will instruct you on completing the update process.
Thank you for purchasing a Velodyne!
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Appendix A: RS-232 Serial Overview and Commands
Introduction
This document outlines Velodyne’s Digital Drive (DD) RS-232 protocol specification. This
protocol indicates how Digital Drive products receive run-time commands from devices such as
Creston Universal Remote Controls.
Com Port Setup
Use standard communications settings: Baud Rate: 9600, Data Bits: 7, Parity: None, Stop
Bits: 1
DD IN and OUT Port Pin Configuration
DD serial ports use a standard configuration that allows direct connection to a PC via a FEMALE
to MALE serial cable. It uses only 3 pins (Transmit, Receive, Ground).
The pin configurations are:
IN:
Pin 2 = Transmit
Pin 3 = Receive
Pin 5 = Ground
OUT:
Pin 2 = Receive
Pin 3 = Transmit
Pin 5 = Ground
Runtime Command Format
Byte Number
0
Byte Description
Notes
‘#’
Header Character
1 to 3 or 4
Command and
3 to 4 ASCII characters see formats below
Parameter Data
Case sensitive - CAPS ONLY!
4 or 5
‘$’
Termination Character (required or
command is ignored)
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RS232 Commands
Activity
Command Acceptable
Example(s)
Comments
Format
n Values
Volume Control #VOnn$,
00 – 99
#VO25$,
#VO+$,
#VO-$,
Sets volume to a value,
increments volume up
or down, or requests
current volume setting
#VO+$,
#VO-$,
#VO?$
#VO?$
Preset Control
#PSn$,
#PS?$
1, 2, 3, 4,
5, 6
#PS1$, #PS2$, Activates the indicated
#PS3$, #PS4$, preset, or requests
#PS5$, #PS6$, the current preset
#PS?$
Logo Light
Control
#LTn$,
#LT?$
0: Light Off
1: Light On
#LT0$
#LT1$
#LT?$
Turns the Logo Light
on or off, or requests
light state
Night Mode
Control
#NMn$,
#NM?$
0: Night
Mode Off
1: Night
Mode On
#NM0$
#NM1$
#NM?$
Activates/Deactivates
Night Mode, or
requests light
mode state
Mute Control
Power Control
#MUn$,
#MU?$
#MU0$
0: Mute Off
1: Mute On
#MU1$
#MU?$
Mutes/Unmutes the
woofer, or requests
mute state
#JUn$,
#JU?$
0: Power Off #JU0$
1: Power On #JU1$
#JU?$
Powers On/Powers
Off the woofer, or
requests power state
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Appendix B: Summary of Special Remote Codes
Following are special remote codes and their functions. Unless otherwise noted, the codes are
active only on the cover page.
Function
Code
Description
Self-EQ
3-2-1
Initiates Self-EQ feature.
Be sure to connect the
microphone before engaging.
Press RESET to cancel
prematurely. After 25 sweeps,
the unit saves and resets.
Restore defaults
8-9-0
Restores defaults and
resets the subwoofer.
Switch to
PAL/SECAM
video
DOWN ARROW
4 times followed
by RESET
The unit restarts in
PAL/SECAM video mode.
TO restore NTSC mode,
restore defaults.
Display serial number
UP ARROW 4 times
then SELECT
Shows the serial number
of the unit at the top
of the screen.
Restore last saved
volume
RESET
If volume is changed,
restores last
saved volume.
Show internal test
parameters
TEST (3 times)
Displays several internal
software variables, including
ACCGAINH, which is a
measure of servo
functioning. Press TEST
again to hide.
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Appendix C: What’s New in release 2.0
Your Digital Drive subwoofer has version 2.0 of the digital drive room management software
installed. Following is a description of the new features for version 2.0.
Feature
Description
Auto-EQ
New option on graph screen. When set to AUTO,
this option resets the EQs to default third-octave
frequencies (20, 25, 32, 40, 50, 63, 80, 100 Hz),
and adjusts +/- 1 dB max each sweep. Can be
done on SETUP (affects all presets) or for
an individual preset.
Self-EQ
Allows EQing without video or EQ out hookup. On
the main screen, when 3-2-1 is pressed on the
remote, the DD automatically emits 25 sweep
tones. If the microphone is connected, the unit self-
EQs. Note that this only affects the low frequency
EQ – it does not affect phase, crossovers, or
other settings.
Individual EQs per preset
Each preset can have its own independent EQ
setup, or all can be affected through the SETUP
selection. Also, EQ curves reflect the effect of ALL
settings for each preset, e.g. crossovers, phase,
etc. Previously, these settings only reflected the
SETUP values.
Defeatable Low-Pass Crossover
The low-pass crossover can be completely shut off
by pressing the reset button when the cursor is on
the low-pass crossover in the settings screen.
Selectable default preset
New field on settings page – whatever preset is
selected will be invoked at startup
Navigation using up, down, left,
right arrows and select.
For people that didn’t like the left-right only
navigation. Now users can use all four directional
arrows to position the cursor, then press SELECT to
activate the field for alteration. For users who liked
the old navigation, simply press select and then use
the left, right, up, and down buttons as before.
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SETUP column lock
This setting freezes the SETUP column values.
Previously, after individually setting preset values,
a change to the setup column would override any
individual preset changes. Users are advised to
complete the global setup using the setup values,
then freeze the setup column and adjust individual
presets if desired.
Remember previous graph so
that the effect of settings
such as phase or crossover
can be seen
This has been implemented by simply not erasing
the previous graph until the new graph overlays it,
allowing the user to see the effect of the
new settings.
Full functionality on graph
screen when TEST key is
pressed on settings screen
Previously, the TEST button showed the user the
graph screen but the only function was to press
TEST again to return to the settings screen. Now
the graph screen is fully functional, and pressing
test again puts the user at the field where they left
off on the settings screen.
Light blink scheme for
volume level
When the volume up or down buttons are pressed,
the Velodyne light will blink faster as the volume
increases, and slower as the volume decreases.
Light blink scheme for
preset selection
The Velodyne light blinks the number of times for the
preset (e.g. three times for preset three).
Accommodate all requested
discreet remote codes
This was introduced in release 1.6 and has been
carried over to release 2.0.
Slave Mode
When two DD subwoofers are connected together
via RS232 cable, the slave subwoofer goes into
slave mode whereby it ignores remote IR input.
To reset from slave mode, power cycle the unit.
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Appendix D: Important Subwoofer Information
Important Information Regarding your
Velodyne Digital Drive™ Series Subwoofer
(DD-15 and DD-18 only) and THX™ Ultra2
THX Ultra Presets for the Velodyne Digital Drive Series:
2
To set the DD-15 and DD-18 to meet THX Ultra requirements, customize Preset 5 with the
2
following parameters:
Low Pass Crossover Frequency: OFF
Low Pass Crossover Slope: 6 dB per octave
Subsonic Frequency: 15Hz
Subsonic Slope: 24 dB per octave
Phase: User adjustable
Polarity: User adjustable
Volume: 25
Contour Frequency: Default
Contour Level: 0.0
Theater/Music: 8
Night Mode Volume: Default in OFF position
THX Certified Pre-Amp/Receivers:
If you have a THX Certified Pre-Amp/Receiver, please connect the “(THX)” input on the back
panel of the DD-15/DD-18 to the ”Sub Out” connector of the THX Pre-Amp/Receiver. Also set
the DD-15/DD-18 to the THX Preset 5, set the system response of the subwoofer as per the
owners manual and then calibrate the THX Pre-Amp/Receiver. This ensures that the bass
management and calibrated levels are optimized for your system.
As this is a new THX Ultra subwoofer, if your Pre-Amp/Receiver is THX Ultra Certified, you
2
2
may use the Boundary Gain Control in the setup menu of the THX Ultra Pre-Amp/Receiver to
2
compensate for any excessive bass heard in the room if you are close to a wall.
THX Certified Ultra2:
Before any home theatre component can be THX Ultra2 certified, it must pass a rigorous
series of quality and performance tests. Only then can a product feature the THX Ultra logo,
2
which is your guarantee that the Home Theatre products you purchase will give you superb
performance for many years to come. THX Ultra requirements cover every aspect of the
2
performance of the product including power output, frequency response, distortion, etc.
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Other Velodyne Subwoofer Products:
Digital Drive Signature 1812™
HGS-X Series
HGS-10X
DLS-R Series
DLS-3500R
DLS-3750R
DLS-4000R
DLS-5000R
HGS-12X
HGS-15X
SPL-R Series
SPL-800R
VRP Series
VRP-1000
VRP-1200
SPL-1000R
SPL-1200R
DPS Series
DPS-10
VX Series
VX-10
DPS-12
LIMITED WARRANTY
VELODYNE ACOUSTICS, Inc. (“VELODYNE”) warrants all powered subwoofers for a period of two years and full range
speakers for a period of five years. All VELODYNE products have a warranty from the date of purchase against
defects in materials and workmanship subject to the following conditions:
1. VELODYNE is not responsible for defects which result from the use of an amplifier or controller other than
the one originally supplied with the unit (subwoofer) or defects which result from modifications or repairs
made by any component of the system by anyone other than a VELODYNE factory authorized
service representative.
2. This warranty is void if any repairs or service covered by the terms of this warranty are made to any
component of the system by anyone other than a VELODYNE factory authorized service representative.
3. VELODYNE is not responsible for damage caused by accidents, abuse, misuse, natural or personal disaster
or unauthorized modification. The VELODYNE products are not intended for professional or commercial use
and VELODYNE is not responsible for damage resulting from such use.
4. The VELODYNE product warranty is limited to units that are purchased from authorized VELODYNE dealers
and finalized within authorized dealer locations.
5. This warranty is nontransferable under any condition.
TO OBTAIN SERVICE
Information regarding service may be obtained from the dealer from whom you purchased the unit, or by contacting
VELODYNE customer service. Warranty service must be performed by a VELODYNE factory authorized service
representative within the warranty period set forth above. If VELODYNE determines the unit is defective, VELODYNE
will, at VELODYNE’s option, repair or replace the product at no charge if the product is forwarded prepaid to a factory
authorized service representative. Products forwarded to the factory authorized service representative should be
shipped securely and properly packaged, insured and freight prepaid.
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Velodyne Acoustics, Inc.
345 Digital Drive
Morgan Hill, CA 95037
408.465.2800 voice
408.779.9227 fax
408.779.9208 service fax
63-DD RevF 11MAY05
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