Infinity Speaker PSW310W User Manual

INFINITY CLASSIA  
CoMPACT POWERED SUBWOOFER  
OWNER S GUIDE  
PSW310W (120V)  
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INFINITY CLASSIA PSW310W OWNER S GUIDE  
Table of Contents  
ii Important Safety Precautions  
1
Unpacking the Subwoofer  
1
Placement  
2
Controls and Connections  
3
System Connections  
4
Operation  
5
Room Adaptive Bass Optimization System (R.A.B.O.S.)  
Contents of the R.A.B.O.S.Test CD  
The R.A.B.O.S. Sound-Level Meter (RSLM)  
RSLM Placement  
6
6
6
7
Initial System-Level Setting  
Setting the Subwoofer Test Level  
Performing Low-Frequency Measurements  
What Does a Parametric Equalizer Do?  
Completing the R.A.B.O.S. Measurement Template  
Using the Width Selector  
7
7
9
9
10  
11  
11  
14  
15  
Level  
What You Measure,What to Do  
Adjusting the R.A.B.O.S. Equalizer  
Final System Balance  
16 Maintenance and Service  
17 R.A.B.O.S. Measurement Templates  
19 Specifications  
INFINITY CLASSIA PSW310W (120V)  
iii  
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Here are several additional facts on installation that may prove  
useful. It is generally believed by most audio authorities that low  
frequencies (below 125Hz) are nondirectional and, therefore,  
placement of a subwoofer within any listening room is not  
critical.While in theory it is true that the larger wavelengths of  
extremely low frequencies are basically nondirectional, the fact  
is that, when installing a subwoofer within the limited confines  
of a room, reflections, standing waves and absorptions generated  
within the room will strongly influence the performance of any  
subwoofer system.As a result, the specific location of the  
subwoofer becomes important, and it is strongly recommended that  
you experiment with placement before choosing a final location.  
INFINITY CLASSIA PSW310W  
The Infinity Classia PSW310W continues the legendary Infinity®  
dedication to accurate sound reproduction.The patented Ceramic  
Metal Matrix Diaphragm (CMMD®) drivers, high-powered amplifier  
and proprietary Room Adaptive Bass Optimization System™  
(R.A.B.O.S.) technology, along with a rigid, well-braced  
enclosure, combine to deliver uncompromised bass performance  
in any stereo or multichannel home theater.  
In addition, the PSW310W’s compact enclosure and  
wireless capability allow for easy integration into any  
residential environment.  
Placement will depend upon your room and the amount and  
quality of bass required (for example, whether or not your room  
permits placement of the subwoofer near either satellite).  
UNPACKING THE SUBWOOFER  
SUB  
If you suspect damage from transit, report it immediately to your  
dealer. Keep the shipping carton and packing materials for  
future use.  
RIGHT-  
CHANNEL  
SPEAKER  
Included  
1 x Owner’s manual  
1 x USA warranty sheet  
1 x Subwoofer  
1 x 15' (4.5m) Audio cable, RCA-RCA  
4 x Spiked feet  
1 x Transmitter module  
PRIMARY  
LISTENING  
AREA  
1 x Power supply for transmitter  
1 x 120V two-prong AC power cord for transmitter power supply  
1 x 6' Audio cable, RCA-RCA  
1 x Wall-mount bracket for transmitter  
2 x With two panhead M3 x 4 machine screws for attaching  
wall-mount bracket to transmitter  
4 x Small, round, self-adhesive feet – to be attached on  
transmitter’s left-side panel if transmitter is to be  
used vertically  
Figure 1.This example shows the subwoofer positioned behind  
the right-channel satellite speaker to re-create the actual  
location of bass instruments in an orchestra and/or add impact  
to movie soundtracks.  
INSTALLING SPIKED FEET  
Four metal spikes are supplied for use when the subwoofer is to  
be placed on a carpeted surface to decouple the subwoofer from  
the floor and prevent unwanted damping.To insert the spikes, gently  
lay the subwoofer on its back (not on its front or side) on a soft,  
nonabrasive surface. Each spike screws into the threaded insert.  
Make sure all four spikes are screwed in completely for stability.  
PLACEMENT  
Since the installation of a subwoofer can be somewhat more  
complicated than installing full-range speakers, it is essential  
that you read this section very carefully prior to connecting the  
subwoofer to your system. Should you have questions relating to  
your installation, it is advisable to call either your dealer or the  
Infinity Customer Service Department for advice.  
NEVER drag the subwoofer to move it,as this will damage the spikes,  
the feet, the wood cabinet itself and/or the floor. Always lift the  
subwoofer and carry it to its new location.  
The performance of the subwoofer is directly related to its  
placement in the listening room and how you align the subwoofer  
with its satellite speakers.The PSW310W’s wireless capability  
makes it even easier to properly locate the subwoofer in your  
room. Setting the volume of the subwoofer in relation to the left  
and right speakers is also of critical importance because it is  
essential that the subwoofer integrate smoothly with the entire  
system. Setting the subwoofer’s volume level too high will result  
in an overpowering, boomy bass. Setting the volume level too low  
will negate the benefits of the subwoofer.  
1
INFINITY CLASSIA PSW310W (120V)  
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CONTROLS AND CONNECTIONS  
Rear Panel  
¡
£
¢
§
ª
Power Switch  
Line-Level Inputs  
LFE Input  
Power Indicator LED  
Low-Pass Selector  
ID-Code Selector  
On  
Off  
¤
Phase  
Frequency  
Antenna  
ª
Level  
C
Crossover Adjustment Control  
Subwoofer-Level (Volume) Control  
Phase Switch  
Width  
Level  
D
Crossover  
[Hz]  
Wireless Antenna  
Room Adaptive Bass Optimization Controls (see page 5)  
Wireless  
§
A
Off  
On  
R.A.B.O.S. Selector  
ID Code  
Low-Pass  
LFE  
¤
Green: Sub On  
R.A.B.O.S. Center-Frequency Adjustment  
Red: Standby  
¢
Orange: Sub On and  
Wireless Link Active  
C
R.A.B.O.S. Bandwidth Adjustment  
L
R
Sub In  
£
D
R.A.B.O.S. Level Adjustment  
Transmitter  
PSW310W  
E
Transmitter Antenna  
F
Transmitter Power-Supply Input  
G
Transmitter ID-Code Selector  
H
Transmitter Sub Input  
Power  
On  
¡
Off  
AC 120V~60Hz  
2A  
ID  
CODE  
DC18V  
Sub In  
1
2
3
4
E
F
G
H
INFINITY CLASSIA PSW310W (120V)  
2
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SYSTEM CONNECTIONS  
Choose either Wireless or Wired connection, then follow the appropriate instructions.  
WIRED  
WIRELESS  
Connecting the Subwoofer for Wired Applications  
Connecting the Subwoofer for Wireless Applications  
If you have a Dolby® Digital or DTS® receiver/processor with  
a low-frequency effects (LFE) or subwoofer output:  
Level  
Crossover  
[Hz]  
ID  
CODE  
DC18V  
Sub In  
1
2
3
4
Wireless  
Off
O
n
ID Code  
Low-Pass  
Step 1.  
Green: Sub On  
Red: Standby  
Connect a subwoofer cable from the subwoofer or LFE output of  
Orange: Sub On and  
Wireless Link Active  
H
your receiver to the Sub In  
on the transmitter.  
L
R
LFE  
Sub In  
Line In  
Step 2.  
Plug the transmitter module into the wall outlet, and connect the  
F
included power supply and power cord to the transmitter . Make  
E
sure the Transmitter Antenna  
is extended upward.  
If your receiver/processor does not contain a Dolby Digital  
or DTS processor but has subwoofer outputs:  
Step 3.  
G
§
Set the ID code on the transmitter and subwoofer ( and ) to  
the same position, as described on page 4.When connected properly,  
¢
the LED  
on the rear of the subwoofer will be orange.  
Step 4.  
Set the Low-Pass Selector  
to theOffposition.  
Level  
NOTE: Some receivers have two subwoofer outputs. In that case, use  
either one of the connectors.  
Crossover  
[Hz]  
Wireless  
Off  
On  
Low-Pass  
ID Code  
Green: Sub On  
Red: Standby  
Orange: Sub On and  
Wireless Link Active  
L
R
LFE  
Sub In  
Line In  
NOTE: If your receiver/processor has only one sub out, you  
may use either the L or R input.  
3
INFINITY CLASSIA PSW310W (120V)  
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OPERATION  
Once you have a green or orange LED on the subwoofer, turn your  
Power On  
Subwoofer-Level Control up halfway so that the knob indicator  
Connect your signal source (such as an A/V receiver or preamplifier)  
to the transmitter (if using wireless connection) or to the subwoofer  
(if using wired connection).Two single-RCA cords are provided.While  
you would ordinarily use the short cable to connect to the transmitter  
or the long one to connect to the subwoofer, either cable can be  
used, depending on proximity to the signal source.There is no need  
or benefit gained from connecting the same source to both the  
transmitter and the subwoofer. However, you could connect two  
separate sources to this subwoofer by utilizing both its wired and  
wireless connections. Both signals will essentially be mixed and  
outputted by the subwoofer. Plug your transmitter’s (if using wireless  
connection) and subwoofer’s AC cord into a wall outlet. Do not use the  
outlets on the back of the receiver for the subwoofer.  
points up.You should now be hearing bass information coming from  
the subwoofer.  
Adjust Level  
Set the overall volume control of the preamplifier or stereo to a  
comfortable level.Adjust the Subwoofer-Level Control until you  
obtain a pleasing blend of bass. Bass response should not overpower  
the room but rather be adjusted so there is a harmonious blend across  
the entire musical range. Many users have a tendency to set the  
subwoofer volume too loud, adhering to the belief that a subwoofer  
is there to produce lots of bass.This is not entirely true.A subwoofer  
should enhance bass, extending the response of the entire system  
so the bass can be felt as well as heard. However, overall balance  
must be maintained or the music will not sound natural.An experienced  
listener will set the volume of the subwoofer so its impact on bass  
response is always there but is never obtrusive.  
Initially set the Subwoofer-Level Control to theMinposition.  
¡
Turn on your sub by pressing the Power Switch on the rear panel.  
Turn on your entire audio system and start a CD or movie soundtrack  
at a moderate level.  
Phase Control  
Auto On/Standby  
ª
The Phase Switch determines whether the subwoofer driver’s  
Transmitter (wireless connection only):The Power Indicator LED  
(not shown) will be lit in red when the unit is in standby.When the  
transmitter receives an audio signal from the source, it will immediately  
turn on and the LED will turn to blinking green or solid green:  
piston-like action moves in and out with the main speakers, 0˚, or  
opposite the main speakers, 180˚. Proper phase adjustment depends  
on several variables such as room size, subwoofer placement and  
listener position.Adjust the Phase Switch to maximize bass output  
at the listening position.  
ª
RED = STANDBY (No signal detected, transmitter off)  
GREEN (BLINKING) = Transmitter is on but has not established a link  
with the wireless sub.  
GREEN (SOLID) = Transmitter is on and has already established a link  
with the wireless sub.  
Crossover Adjustment  
The Crossover Adjustment Control determines the highest frequency  
at which the subwoofer reproduces sounds. If your main speakers can  
comfortably reproduce some low-frequency sounds, set this control  
to a lower frequency setting, between 50Hz and 100Hz.This will  
concentrate the subwoofer’s efforts on the ultradeep bass sounds required  
by today’s films and music. If you are using smaller bookshelf speakers  
that do not extend to the lower bass frequencies, set the Crossover  
The transmitter will automatically enter Standby mode after approximately  
10 minutes when no signal is detected from your system.  
Subwoofer:With the Power Switch ¡ in theOnposition, the Power  
Indicator LED ¢ on the back panel will remain lit to indicate the  
On/Standby mode of the subwoofer.  
Adjustment Control to a higher setting, between 120Hz and 150Hz.  
RED = STANDBY (No signal detected, amp off)  
NOTE: This control will have no effect if the LFE Input £ is used  
GREEN = SUB ON (Wired signal detected, amp on)  
ORANGE = SUB ON (Wireless link with transmitter active)  
(wired connection) or if the Low-Pass Selector is in theOFFposition  
(wireless connection). If you have a Dolby Digital or DTS processor/  
receiver, the low-pass frequency is set by the processor/receiver. Consult  
your owner’s manual to learn how to view or change this setting.  
The subwoofer will automatically enter Standby mode after  
approximately 10 minutes when no signal is detected from your  
system.The subwoofer will then power on instantly when a signal is  
ID Codes  
¡
detected. During periods of normal use, the Power Switch can be  
In the unlikely event that you experience interference when operating  
the system, or if you have more than one set of subwoofer transmitters  
and receivers in operation, you may change the channel in which the  
system operates. On the transmitter module and the subwoofer, there is  
¡
left on.You may turn off the Power Switch for extended periods of  
nonoperation, e.g., when you are away on vacation.  
Getting Started  
G
§
a four-position ID-Code Selector ( and ). Simply set the selectors  
Confirm that the Status LED on the transmitter (not shown) is on (red  
G
§
)
to one of the other positions.The transmitter and subwoofer ( and  
¢
or green) and the Status (Power Indicator) LED on the subwoofer  
selectors must be set to the same position for the system to function  
correctly.You can also set up a maximum of two subwoofers to be  
receiving from the same transmitter by setting the channel selector  
on the transmitter and both of the subwoofers to the same channel.  
is on (red, orange or green) and that an RCA cable is connected  
£
from a source unit to either the LFE Input of the subwoofer or  
H
transmitter or L and R inputs on the subwoofer. Play a CD or  
video. Use a selection that has ample bass information. If using a  
wireless connection, the Status LED on the transmitter should be lit  
A Word About Wireless Products  
The Infinity Classia PSW310W wireless subwoofer utilizes advanced  
wireless transceivers operating in the 2.4GHz frequency band.This is  
the same frequency band that is used for wireless home networks and  
high-quality cordless phones. It also allows for the transmission of high-  
performance, full-spectrum sound to remote locations, wirelessly.  
¢
in solid green, and the Status LED on the subwoofer should turn  
orange if connected wirelessly. If the LED on the transmitter is blinking  
in green and the LED on the subwoofer is in red or green, a wireless  
link has not been established between the transmitter and the  
subwoofer. If connecting directly to the subwoofer without using the  
¢
wireless link, the Status LED on the subwoofer should be lit green.  
If the LED on the subwoofer remains red, check that the RCA cable from  
the source to the subwoofer (wired connection) or transmitter (wireless  
connection) is functioning properly (wired connection) and that it is  
Like all wireless devices, the Infinity PSW310W wireless subwoofer’s  
operating range may vary, depending upon variables such as building  
construction methods and materials, atmospheric conditions and other  
sources of interference. Please consult your Infinity dealer or distributor,  
G
fully inserted at both ends, or that the Transmitter ID-Code Selector  
§
and the Subwoofer ID-Code Selector are set to the same channel.  
INFINITY CLASSIA PSW310W (120V)  
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Wall-Mounting the Transmitter Module  
NOTE: The customer is responsible for the correct selection and  
use of mounting hardware (available through hardware stores) that  
will ensure the proper and safe wall-mounting of the transmitter.  
The R.A.B.O.S. Goal  
It is a fact of audio that what we hear at low frequencies is  
determined as much or more by the listening room than by the  
loudspeaker itself. Placement of the loudspeakers and listeners  
and the acoustical characteristics of the room surfaces are all  
important determinants of bass quantity and quality. In most  
practical situations, there is little that can be done about this,  
except for patient trial-and-error repositioning of the loud-  
speakers and listeners. Usually, the practical constraints  
of a living space and the impracticality of massive acoustical  
treatment mean that equalization is the only practical solution.  
Step 1.  
Insert the two M3 x 4 machine screws through the wall bracket and  
into the rear of the transmitter module, as shown in the figure below.  
Step 2.  
Attach the transmitter module with wall bracket to the wall,  
using suitable hardware and, if necessary, wall anchors.  
Professional sound engineers routinely employ sophisticated  
measurement systems and equalizers to optimize speakers to  
the installation.This has never been practical for the home  
audiophile.This is why R.A.B.O.S. technology was created. It  
enables you to identify the dominant low-frequency response  
characteristic of your room. Once you know the problem, the  
R.A.B.O.S. system provides the tools needed to optimize the  
low-frequency characteristics of the speakers to the room they  
are in, exactly as the professional sound engineers do it.  
Performing R.A.B.O.S.Tests  
These instructions assume you have already installed your subwoofer  
according to the information provided in the owner’s guide. It is  
also assumed that all equipment in your entertainment system is  
interconnected properly and is in good operating condition.  
ROOM ADAPTIVE BASS OPTIMIZATION SYSTEM™  
Preparations  
Before beginning R.A.B.O.S. tests, please check the following:  
The Infinity R.A.B.O.S. technology is a simple-to-use, yet  
sophisticated, low-frequency calibration system. It is designed  
to work in conjunction with the Infinity Classia PSW310W  
powered sub.The subwoofer contains a parametric equalizer  
that you will adjust as indicated by the R.A.B.O.S. test results.  
By following these instructions, you will optimize the subwoofer’s  
response characteristics to complement the sub’s environment.  
This will dramatically improve the sound of your system.The  
optimization process takes less than 30 minutes.  
• Set R.A.B.O.S. System Selector  
• Make sure all three R.A.B.O.S. controls (  
on the subwoofer are turned fully clockwise.  
to theOnposition.  
¤ C  
,
D
and  
)
• Make sure the loudness contour (if any) on your receiver/  
processor/preamp is turned off.  
• Set the tone controls (Bass and Treble) to their center or  
flat positions.  
• Bypass all surround and effects features of your receiver/  
processor/preamp or set toStereo Bypass.”  
• If you are using a multichannel surround processor or receiver,  
make sure all bass-management features are properly set.The  
Audio channels should all be set toSmallorHigh-Pass” and  
the subwoofer set toOn.”  
The Optional R.A.B.O.S. Kit Includes  
the Following Components:  
• Specialized Sound-Level Meter  
• Test CD  
• Instructions  
• Measurement Templates  
• Width Selector  
You must have a CD player in the system.A CD player remote  
control is quite convenient but not essential.  
For best results, it is recommended that all major furnishings are in  
place and that all doors and windows in the listening area are in  
their normal positions.That is, if you normally listen to music with all  
doors closed, then this is how they should be during this procedure.  
• AdjustmentKey”  
What R.A.B.O.S.Technology Does  
The Test CD provides specially designed signals you will use  
while performing measurements.The sound-level meter provided  
is used toacquirethe information needed for adjustments.  
You will create a response plot on the R.A.B.O.S. Measurement  
Template. Using the Width Selector, you will then determine the  
appropriate equalizer settings.The AdjustmentKeyis used to  
adjust the parametric equalizer built into the PSW310W.After  
adjustment, the test sequence is repeated to confirm your settings.  
Try to minimize ambient noise while running tests.Turn off all major  
appliances and any air conditioning or furnace fans.These can  
create significant subsonic noise that may be barely perceptible but  
which can wreak havoc on low-frequency measurements.  
Critical information is highlighted with this mark:  
Helpful hints are marked with this symbol:  
5
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Contents of the R.A.B.O.S. Test CD  
Power is switched on or off by pressing the button directly below  
the bar-graph window.When the unit is on, one or more LEDs will  
always be illuminated.The function of the LEDs is described in  
the following section.  
Track Title  
Track Title  
Quick Retest 80Hz  
1
Welcome  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
2
3
4
5
6
7
8
9
Set System Test Level  
Set Subwoofer Test Level  
100Hz Test  
95Hz Test  
90Hz Test  
85Hz Test  
80Hz Test  
77Hz Test  
72Hz Test  
66Hz Test  
63Hz Test  
56Hz Test  
52Hz Test  
49Hz Test  
46Hz Test  
43Hz Test  
40Hz Test  
38Hz Test  
35Hz Test  
30Hz Test  
26Hz Test  
24Hz Test  
22Hz Test  
21Hz Test  
20Hz Test  
Intro to Quick Retest  
Quick Retest 100Hz  
Quick Retest 95Hz  
Quick Retest 90Hz  
Quick Retest 85Hz  
Quick Retest 77Hz  
Quick Retest 72Hz  
Quick Retest 66Hz  
Quick Retest 63Hz  
Quick Retest 56Hz  
Quick Retest 52Hz  
Quick Retest 49Hz  
Quick Retest 46Hz  
Quick Retest 43Hz  
Quick Retest 40Hz  
Quick Retest 38Hz  
Quick Retest 35Hz  
Quick Retest 30Hz  
Quick Retest 26Hz  
Quick Retest 24Hz  
Quick Retest 22Hz  
0dB  
-1  
-2  
0dB  
-1  
-2  
0dB  
-1  
-2  
0dB  
-1  
-2  
-3  
-4  
-3  
-4  
-3  
-4  
-3  
-4  
-5  
-6  
-5  
-6  
-5  
-6  
-5  
-6  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
-7  
-8  
-7  
-8  
-7  
-8  
-7  
-8  
-9  
-9  
-9  
-9  
-10  
-12  
-14  
-16  
ON  
Batt  
-10  
-12  
-14  
-16  
ON  
Batt  
-10  
-12  
-14  
-16  
ON  
Batt  
-10  
-12  
-14  
-16  
ON  
Batt  
Quick Retest 21Hz  
Quick Retest 20Hz  
Final System-Level Adjustment  
Final Subwoofer-Level Adjustment  
Wide Band Pink Noise, Left  
Wide Band Pink Noise, L+R  
Wide Band Pink Noise, Right  
Wide Band Pink Noise, L-R  
Wide Band Pink Noise, Uncorrelated  
1 to 4kHz Pink Noise, Left  
1 to 4kHz Pink Noise, L+R  
1 to 4kHz Pink Noise, Right  
1 to 4kHz Pink Noise, Left-R  
1 to 4kHz Pink Noise, Uncorrelated  
Low  
Battery  
Over-Range  
Measurement  
In-Range  
On  
Under-Range  
Figure 3. RSLM bar-graph indications  
• Power-On/Low Signal: This is indicated by the illumination of  
any LED on the bar graph. If the sound level in the room is  
below the measurement range of the instrument, a green LED  
near the bottom of the bar graph will be illuminated.  
• Normal Measurements:When the sound level is within the  
range of the RSLM, the green LED will be off and one of the  
red LEDs in the bar graph will be illuminated, indicating the  
relative sound level, in decibels (dB).  
Tracks 53–62 of the R.A.B.O.S.Test CD are test tones that can be  
used for general diagnostics of your system.They are not used for  
R.A.B.O.S. settings.  
• Over-Range: If the sound level exceeds the range of the meter,  
0dB through –5dB will all light simultaneously.  
• Low Battery:When the battery voltage is too low for accurate  
measurements, an LED at the bottom of the bar graph will be  
illuminated. Replace the battery.  
THE R.A.B.O.S. SOUND-LEVEL METER (RSLM)  
The RSLM is a battery-operated, handheld, acoustic measurement  
device specifically designed for the Infinity R.A.B.O.S. system. On the  
face of the instrument is a light-emitting diode (LED) bar graph that  
indicates relative sound level.There are also indicators for power-on,  
out-of-range signals and a low battery.  
Do not attempt measurements when the Low Battery light is on.  
RSLM Placement  
Determine where in the room you are most likely to sit when  
listening to music or watching a movie.This is where you will  
want to hold the RSLM during measurements.The RSLM should  
be oriented so it can be easily read and held at your seated  
ear level during tests.  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
-11  
-13  
-15  
-18  
You must use this same position for all tests.  
U-R  
Batt  
The RSLM can be mounted on a standard camera tripod.  
This will ensure the best results.  
Power  
Figure 2. R.A.B.O.S. Sound-Level Meter  
INFINITY CLASSIA PSW310W (120V)  
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sound bad; they can cause measurement errors. If you hear a  
buzz or rattle during this test, it is highly recommended that you  
locate the source and eliminate its effects.This is actually a  
valuable room-diagnostic tool.  
Initial System-Level Setting  
The following steps will set the playback level of the system to  
the correct level for all tests that follow.  
Turn the system volume to minimum.  
Press Play  
.As Track 3 plays, watch the RSLM carefully.Watch  
for peak readings.The peak reading may be no more than a brief  
Cue the R.A.B.O.S.Test CD to Track 2 and press Pause II.This  
track will produce band-limited pink noise in both the left and  
right channels.  
flash. Readjust the subwoofer’s Subwoofer-Level Control  
until  
the peak level observed is 0dB without triggering the over-range  
indication. See Figure 5.  
Press Play . With the RSLM positioned as described above,  
increase the system volume until the RSLM display indicates –10dB.  
See Figure 4.  
0dB  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
-12  
-14  
-16  
ON  
0dB  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
-12  
-14  
-16  
ON  
0dB  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
-9  
-10  
-12  
-14  
-16  
ON  
0dB  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
ꢀ ꢀ  
-9  
-10  
-12  
-14  
Batt  
Batt  
Batt  
-16  
ON  
Batt  
Figure 4. RSLM indicating the  
correct system level to  
begin tests (–10dB)  
Too High  
Correct  
Level  
Too Low  
Figure 5.Adjusting the subwoofer levels for a 0dB peak  
When you have completed this adjustment, press Pause II.  
When finished, press Pause II.  
Setting the Subwoofer Test Level  
Performing Low-Frequency Measurements  
Each of the following test tracks is about one minute  
long.This is normally much longer than required. Press Pause II  
or advance to the next test as soon as you are ready.  
Read the following instructions fully before beginning tests.  
For the following steps, you will need a R.A.B.O.S. Measurement  
Template and a pencil.  
This step will set the subwoofer levels for measurement  
purposes.The objective is to scale the subwoofer’s output to  
make full use of the RSLM indicator range. Scaling is optimum  
when a 0dB reading is observed on the highest peak without  
triggering the over-range indication. Later, you will rebalance  
the subwoofer to the main speakers.  
¤ C  
,
D
and , should be  
The three R.A.B.O.S. controls,  
set to fully clockwise positions, and all measurements should be  
conducted with their level controls in this position. Confirm this  
setting before you begin this test.The Subwoofer-Level Control  
should be set to the mid position.  
Cue Track 3 and Pause II.Track 3 continuously steps through all  
subwoofer test tones for approximately one minute. Each tone will  
play just long enough for the RSLM to give a stable reading.  
To get accurate measurements, it is necessary to play  
the subwoofer quite loud.The 0dB indication is about 94dB.At  
this level, frequencies below 100Hz can cause doors, windows,  
furnishings and other objects in the room to vibrate.This  
frequently results in clearly audible buzzes and/or rattles that  
come and go as each test tone plays. Strong buzzes not only  
Figure 6. R.A.B.O.S. Measurement Template  
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Each of the following tracks produces a low-frequency test  
tone.The range of these tests is from 100Hz down to 20Hz.The  
frequency of each test is announced before it begins.The first  
test is the highest frequency (100Hz); therefore, you will be  
marking the template from right to left. Each frequency point is  
listed across the bottom of the R.A.B.O.S. Measurement Template  
(this is called the X-axis). See Figure 6 on the previous page.  
The vertical scale on the left side of the template indicates  
relative level, in dBs (the Y-axis).The template’s vertical scale  
matches that of the RSLM bar graph.  
When finished, press Skip  
I to advance to the next test. Repeat  
the process described above for Tracks 5 through 26.  
When you have completed the 23 measurements, you are ready to  
analyze the data and make corrective adjustments.The completed  
R.A.B.O.S. Measurement Template will look something like the  
example in Figure 9.  
Cue Track 4 and Pause II.  
From now on, you will want to keep your CD player’s  
remote control handy.  
Press Play . As Track 4 plays, observe the level indicated on  
the RSLM.  
EXAMPLE:The test frequency is 100Hz and the level indicated is  
–2dB. Find the intersection of 100Hz (X-axis) and –2dB (Y-axis).  
Place a dot at that point. See Figure 7.  
Figure 9. Completed R.A.B.O.S. template  
Now connect the dots as shown in Figure 10.This will make  
interpretation of the data much easier.  
Figure 7. Locating a test point  
It takes a few seconds for the RSLM reading to stabilize,  
especially at very low frequencies. Don’t rush. Give each test  
adequate time for the meter to stabilize.  
At the bottom of the bar graph is a greenOnLED.This LED is  
illuminated whenever the sound level is below the measuring  
range of the RSLM. If this occurs during a test, place a dot at  
the intersection of the test frequency and the bottom frame of  
the template. See Figure 8.  
Figure 10.Test example with dots connected  
2
Figure 8. Indicating an under-range test  
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At this point, you may simply enter the data you just  
measured into the R.A.B.O.S. calculator, found on the  
Width  
The frequency range of the R.A.B.O.S. equalizer may be set from  
5% to 50% of an octave in 21 steps.This setting defines how  
much of the PSW310W’s output will be equalized.  
STOP  
entering the data, this R.A.B.O.S. wizard will return the correct  
¤ C  
,
D
settings for all three R.A.B.O.S. controls:  
and . Skip  
to page 14 and adjust these controls as described, and finish  
the R.A.B.O.S. setup. If you would like to manually calculate the  
R.A.B.O.S. settings, simply continue following the instructions  
from this point.  
What Does a Parametric Equalizer Do?  
The R.A.B.O.S. system uses one band of parametric equalization  
for response correction. Parametric equalizers are the most  
versatile class of filters.The effect an equalizer will have on the  
signal is dependent on three parameters.  
Frequency: The equalizer will have maximum effect at one  
frequency, usually described as the center frequency.  
Level: This refers to the amount of cut (in dBs) for which the  
equalizer is set.  
Figure 11. Effect of adjustable width  
Bandwidth: Defines the range of frequencies over which the  
equalizer will have an effect. On the PSW310W, this adjustment  
is abbreviated asWidth.”  
Width is expressed as a percentage of an octave. For example, a  
width setting of 25% means the equalizer will affect a frequency  
band of 1/4 of an octave; 1/8 of an octave above and 1/8 of an  
octave below the center frequency.  
Only parametric equalizers allow independent adjustment of all  
three parameters.  
The octave is a logarithmic expression. From any point  
in the spectrum, one octave above or below that point is always  
double or half the frequency.Therefore, one octave above 100Hz  
would be 200Hz. One octave below 100Hz is 50Hz.  
These will be explained more fully in the sections that follow.  
Completing the R.A.B.O.S. Measurement Template  
Along the bottom of the R.A.B.O.S. Measurement Template are  
three fields where you will enter the equalizer settings needed to  
complete system optimization.  
In the section that follows, we will discuss the use of the  
Width Selector.  
These instructions are based on the example in Figure 11. Use  
this tutorial to become familiar with the process. Strategies for  
several other test results will be presented later.After you have  
completed these three entry fields, you will be ready to perform  
the adjustments, completing R.A.B.O.S. optimization.  
Frequency  
The frequency of the R.A.B.O.S. equalizer may be adjusted to  
any one of nineteen frequencies from 20Hz to 80Hz.This defines  
where you are going to apply equalization.  
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