Samson Stereo Receiver MDR 1064 User Guide

TEN CHANNEL MIXER  
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Table of Contents  
Introduction  
2
3
4
5
MDR1064 Features  
Front and Rear Panel Layout  
Front and Rear Panel Controls  
Controls and Functions  
Mono/Stereo Input Channel Section  
Master Section  
6–7  
8–9  
MDR1064 Input and Output Connections  
Operating the MDR1064  
System Set-ups  
10–11  
12–14  
15–16  
17  
MDR1064 Wiring Guide  
Specifications  
18  
Block Diagram  
19  
Notes  
20  
Copyright 2004, Samson Technologies Corp.  
Printed February, 2004  
Samson Technologies Corp.  
575 Underhill Blvd.  
P.O. Box 9031  
Syosset, NY 11791-9031  
Phone: 1-800-3-SAMSON (1-800-372-6766)  
Fax: 516-364-3888  
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Introduction  
Congratulations on your purchase of the Samson MDR1064 mixer! The MDR1064 is a ten-channel mixer, with six  
low noise microphone pre-amps. The six Mic/line inputs and two stereo inputs each feature a 3-band equalizer  
plus two Aux sends. The MDR1064’s master section includes two stereo Aux returns and a 2-tack Input and  
Output for playing back stereo devices and for recording your mix. Clean, clear sound reproduction with sweet  
equalization and signal flexible routing in a rugged enclosure, ensure reliable high quality sound from perfor-  
mance to performance. Optimized for recording, live sound reinforcement and commercial installations, the  
MDR1064 is an ideal mixer solution offering big sound in a compact package.  
In these pages, you’ll find a detailed description of the features of the MDR1064 mixer, as well a description of its  
front and rear panels, step-by-step instructions for its setup and use, and full specifications. You’ll also find a war-  
ranty card enclosed—please don’t forget to fill it out and mail it in so that you can receive online technical support  
and so we can send you updated information about these and other Samson products in the future.  
With proper care and adequate air circulation, your MDR1064 will operate trouble free for many years. We rec-  
ommend you record your serial number in the space provided below for future reference.  
Serial number:  
Date of purchase:  
Should your unit ever require servicing, a Return Authorization number (RA) must be obtained before shipping  
your unit to Samson. Without this number, the unit will not be accepted. Please call Samson at 1-800-3SAMSON  
(1-800-372-6766) for a Return Authorization number prior to shipping your unit. Please retain the original packing  
materials and if possible, return the unit in the original carton and packing materials.  
2
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MDR1064 Features  
The Samson MDR1064, ten-channel mixer is a comprehensive, all-in-one solution for live sound, recording, fixed  
installation and post production applications. Here are some of its main features:  
Eight Channels – Six Mic/Line plus two Stereo inputs with mic pre’s.  
Flexible design topology ideal for live sound, recording and post production.  
2 Track Input and Output allows you to connect a CD, DAT, Cassette, Mini Disk or Computer Sound  
Card.  
Three-band channel equalizer, +/-15dB at 80Hz, 2.5 KHz and 12KHz provides precise and musical  
results in sound shaping.  
Two Auxiliary Sends for built-in or external effects, on-stage monitor mix, or headphone mixing.  
Twelve segment LED Meter with VU ballistics displays the main MIX output.  
High quality, low noise, discrete microphone pre-amplifiers with 48-Volt phantom power, provide  
Maximum Dynamic Range and transparent audio.  
Advanced circuit design using discrete components and high quality, low noise op-amps carefully select-  
ed at each stage of the signal path.  
Quality build and rugged construction ensure reliable performance from venue to venue and session to  
session.  
Three-year extended warranty.  
3
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Front and Rear Panel Layout  
4
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Front and Rear Panel Controls  
20 AUX SEND 1 – Line level output from the Auxiliary 1  
FRONT PANEL  
bus.  
1
MIC IN – Input connector for Low-Noise Microphone pre-  
amp.  
21 AUX SEND 2 – Line level output from the Auxiliary 2  
bus.  
2
3
LINE IN–Input connector for Line level inputs.  
22 AUX RETURN 2 – Left and right input jacks for con-  
necting to the outputs of external line level sources  
like those from effects processors.  
INSERT – 1/-4-inch TRS (TIP/RING/SLEEVE) connector  
providing send and recieve channel patch point for out-  
board effects.  
23 AUX RETURN 1 – Left and right input jacks for con-  
necting to the outputs of external line level sources  
like those from effects processors.  
4
5
GAIN – Used to set the input level of the mic pre and line  
input.  
24 2 TRACK OUTPUTS – Connect to the input of a DAT,  
LOW CUT – Bass roll off switch at 75Hz used to eliminate  
unwanted low end rumble and hum.  
Cassette, Mini Disk or Hard Disk Recording system.  
25 2 TRACK INPUTS – Connect the output from a DAT,  
`6` HIGH FREQUENCY – Controls the high band of the  
Cassette, Mini Disk or Hard Disk Recording system.  
Channel Equalizer, +/- 15 dB at 12KHz.  
26 POWER LED – Indicates the MDR1064 is powered up.  
7
8
9
MID FREQUENCY – Controls the mid band of the Channel  
Equalizer, +/- 15 dB at 2.5KHz.  
27 PHANTOM LED – Indicates that the 48 Volt Phantom  
Power is on.  
LOW FREQUENCY – Controls the low band of the Channel  
Equalizer, +/- 15 dB at 80Hz.  
28 OUTPUT METER - Twelve segment LED display with  
VU ballistics indicates main Mix level.  
AUX 1 – Pre-fader auxiliary send that can be used with  
an external effects processor, or to create a cue or moni-  
tor mix.  
29 MAIN LEVEL – Used to control the overall volume of  
the Left and Right main Mix outputs.  
10 AUX 2 – Post-fader auxiliary send that can be used with  
an external effects processor, or to create a cue or moni-  
tor mix.  
30 PHONES/CR – Adjusts the volume of the control room  
speakers or headphones.  
31 2 TRACK TO CR – Switches between the main Mix  
11 PAN – Controls the channel’s position between left and  
and the 2 Track in the Control Room output.  
right in the stereo bus.  
32 2 TRACK TO MIX - Switch used to mix the 2 track  
12 PEAK – Red LED will illuminate indicating when the  
input with the mix from the channel inputs.  
GAIN has been adjusted too high.  
33 TO AUX 1 - Switch used to route aux return 2 into the  
Aux 1 output so that effects can be heard in the mon-  
itor mix.  
13 LEVEL – Audio taper fader provides smooth control over  
level changes.  
14 RIGHT LINE – 1/4-inch phone input connector for the right  
34 AUX RETURN 2 – Used to mix in level of the effects  
line input for the stereo channels.  
return.  
15 LEFT LINE - 1/4-inch phone input connector for the Left  
35 AUX RETURN 1 – Used to mix in level of the effects  
Line input for the stereo channels.  
return.  
16 CONTROL ROOM OUTPUT– Left and Right Control Room  
36 BALANCE – Controls the channel’s position between  
output connectors for connecting a monitor system.  
left and right in the stereo inputs.  
17 MAIN MIX OUTPUT (1/4-inch) – Left and Right Main Mix  
REAR PANEL  
balanced output 1/4-inch TRS connectors.  
A
B
POWER – Switches on the MDR1064’s main power.  
18 MAIN MIX OUTPUT (XLR) – Left and Right Main Mix bal-  
anced output XLR connectors.  
PHANTOM – Engages the 48-Volt Phantom power  
supply to microphone pre-amps.  
19 PHONES JACK – Connect stereo headphones here.  
C
AC ADAPTOR INLET – Connect External AC power  
supply here.  
5
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Controls and Functions  
MONO/STEREO INPUT CHANNEL SECTION  
The following section details each part of the MDR1064’s MONO INPUT CHANNELS including the GAIN con-  
trol, LOW CUT switch, 3-BAND EQ, AUX sends, PEAK LED, PAN and LEVEL controls. The input channels one  
through six on the MDR1064 feature high quality, discrete transistor pre-amp providing transparency and  
extended dynamic range.  
GAIN  
1
The MDR1064’s pre-amp stage has a variable GAIN control with a range of 5  
to 60dB on the MIC input and –26 to +26dB on the LINE input.  
2
LOW CUT FILTER  
Each of the MDR1064’s first six channels include a LOW CUT (or high pass)  
filter which rolls off the low frequencies from 75Hz and below at the rate of  
18dB per octave. The LOW CUT filter allows you to remove the lower frequen-  
cies that you sometime just don’t want to pick up. For example, when you are  
1
2
miking a high-hat you only want to capture the frequencies that the hi-hat is  
producing. Therefore, by using the LOW CUT filter, you can reduce the  
amount of pick-up from the low toms and bass drum that may leak into the hi-  
hat mic. You can use the same technique on other instruments like acoustic  
guitar, violin, piano and even on vocals. In live sound applications, the LOW  
CUT filter is especially useful for removing stage rumble.  
3
CHANNEL EQUALIZER  
The MDR1064 input channels feature a 3-band equalizer allowing you to  
adjust the high, mid, and low frequencies independently on each channel. The  
channel’s frequency response is flat when the knobs are in the "12:00" posi-  
tion. Rotating the knob towards the right will boost the corresponding frequen-  
cy band by 15dB, and rotating it towards the left will cut the frequency by  
15dB. The frequency centers, range of boost or cut, and equalizer type for  
each band are as follows:  
3
High: 12KHz +/- 15dB shelving type  
Mid: 2.5KHz +/- 15dB peaking type  
Low: 80Hz +/- 15dB shelving type  
4
AUX 1  
4
The MDR1064 has two auxiliary sends which can be used for sending signals  
to external effects devices or for creating a monitor mix. The AUX1 section is  
often used for a monitor mix in a live sound mixing, or for a headphone mix in  
a recording application. Each input channel includes an AUX 1 send which  
controls the amount of that channel’s signal that is sent to the AUX bus.  
5
NOTE: The AUX1 controls are "PRE-FADER SENDS" which means they are  
not affected by the FADER level settings of each channel. This allows you to  
create a mix for the monitors that is independent of the main LEFT and RIGHT  
MIX.  
5 AUX 2  
The channel’s AUX 2 knob controls the amount of signal that is sent to the AUX 2 bus. The AUX 2 signal  
can be sent to an external effects device connected to the AUX 2 OUT jack located in the MASTER SEC-  
TION jack field.  
6
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Controls and Functions  
(MONO/STEREO INPUT CHANNEL CONTINUED)  
NOTE: The channel’s AUX 2 signal is sent to the AUX 2 bus from a location in the signal path after the  
channel’s LEVEL control. This is commonly referred to as a POST FADER send. This means that the  
amount of signal that is sent to the AUX 2 bus will be affected not only by the setting of the AUX 2 knob  
control, but it will also be affected by the setting of the LEVEL control.  
BALANCE (Stereo Inputs Only)  
6
The MDR1064’s BALANCE control is used to place or position the  
stereo signal into the main Left and Right MIX bus. You can move a  
stereo signal’s image to the left or right by setting the BALANCE  
control to the left or to the right.  
6
PAN (Mono Inputs Only)  
7
The MDR1064’s PAN control is used to place or position the mono  
signal into the stereo main Left and Right MIX bus. You can create a  
stereo image by panning some input signals to the left and others to  
the right. The MDR1064’s PAN control is a Power-Pan circuit, which  
includes a 3dB dip in the center position. This is desirable since  
there’s a 3dB increase in gain when the mono input signal is heard  
in both the Left and Right MIX bus.  
PEAK LED  
8
The MDR1064’s MIC/LINE pre-amp also includes a PEAK LED  
which, when illuminated, indicates that the signal is peaking or over-  
loading. To reduce distortion, lower the GAIN control to keep this  
LED from staying on.  
7
CHANNEL LEVEL  
9
The MDR1064’s LEVEL control knobs are used to adjust the overall  
channel volume.  
8
9
7
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Controls and Functions  
MASTER SECTION  
MAIN LEVEL  
10  
The master MAIN control is the overall volume control for the left and right mix bus. These line level signals  
are output from the MAIN MIX jacks.  
11  
PHONES / CR  
The PHONES / CR control is used to set the level sent to the  
control room outputs, and also to the headphone jack.  
14  
2 TRACK INPUT AND OUTPUT  
The MDR1064’s 2 Track section provides the connections for play-  
back and recording for an external device such as a DAT, cassette  
recorder, CD or Mini Disk.  
12 2TK TO CR  
The 2TR TO CR switch is used to assign the 2TR input to the  
Control Room output. If you push down the 2TK TO CR button,  
signal will be routed into the left and right Control Room output  
and will be adjusted by the CR / PHONES control knob.  
13  
2TK TO MIX  
The 2TR TO MIX switch is used to assign the 2TR input to the  
MAIN mix bus. If you push the 2TR TO MIX button, the signal  
present at the 2 TRACK IN will be routed to the left and right  
MAIN output and the level will be controlled by the MAIN  
LEVEL knob.  
13  
12  
Auxiliary Returns  
The MDR1064 has two stereo auxiliary returns, which can be  
accessed via the two pairs of 1/4-inch phone jacks located on the  
master section jack field. The auxiliary returns can be used to con-  
nect any stereo line level signal, but they are primarily used to con-  
nect the output of external effects processors.  
AUX RET 1  
14  
This adjusts the amount of signal that is sent from the AUX 1  
RET jacks to the MAIN bus.  
11  
10  
8
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Controls and Functions  
MASTER SECTION (continued)  
AUX RET 2  
15  
The AUX RETURN 2 adjusts the level of the signal present at the AUX 2 RET jacks. This signal is summed,  
or mixed in to the main L/R MIX bus.  
TO AUX 1  
16  
This routes the signal that is present on the AUX 2 RETURN  
jacks to AUX 1 so that the effects can be heard in the monitor  
mix.  
POWER LED  
17  
18  
The Power LED lights up to indicate that the main POWER  
switch (located on the rear panel) is on.  
18  
17  
15  
Phantom Power LED  
This LED illuminates indicating that the 48 volt phantom power  
is applied to the microphone pre-amps enabling use with con-  
denser microphones. The +48V LED will light up when the  
Phantom Power switch (located on the rear panel) is switched  
to the ON position.  
16  
19  
19 Output Level Meter  
The OUTPUT LEVEL METER allows you to monitor the level  
of the signal which is being sent to the MIX OUT jacks.  
NOTE: To avoid distortion, adjust the Main Level control so that the 0  
indicator LED lights occasionally.  
9
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MDR1064 Input and Output Connections  
CHANNEL 1 – 6 MIC and LINE INPUTS  
The MDR1064’s channel 1 through 6 mono inputs each have a 1/4-inch connector for line level signals and XLR  
connectors for the MIC signals. Channels 7/8 and 9/10 stereo inputs each have 1/4-inch connectors for line level  
inputs. By using the GAIN control on channels 1 through 6, you can connect a variety of signal sources from  
microphones to line level devices such as synthesizers, and drum machines. All the LINE and MIC inputs are  
balanced. The MIC inputs are compatible with microphones with output impedances of 50-600 Ohms and the  
LINE inputs are compatible with line level devices of 600 Ohms. Following below is a detailed description of the  
MDR1064’s input and output connectors.  
NOTE: It is not possible to simultaneously use both the LINE and MIC inputs on the same channel. Use only one  
of the inputs for the appropriate source on each channel.  
1
Microphone Input - Mono Input Channels  
Use these inputs to connect Low Impedance micro-  
phones and low level signals from direct boxes. The MIC  
inputs have a nominal operating level of –50dBu through  
-20dBu. The MIC inputs also feature +48V phantom  
power, allowing you to use condenser microphones. The  
Phantom Power switch (located on the MDR1064’s rear  
panel) enables phantom power on all the microphone  
inputs when set to the ON position. XLR Connector pin-  
out - Pin 1: Ground, Pin 2: Hot (+), Pin 3: Cold (-)  
1
2
Line Level Input - Mono Input Channels  
2
3
Use these inputs to connect synthesizers, drum  
machines, effects processors or any line-level signal.  
The LINE inputs have a nominal operating level of -  
40dBV through - 10dBV. TRS phone jacks Connector  
pin-out - Sleeve: Ground, Tip: Hot (+), Ring: Cold (-)  
3 Insert Point Jack - Mono Input Channels  
The MDR1064’s mono input channels feature a 1/4-inch  
TRS INSERT jack providing a patch point to connect an  
external processor. You can use these connections to  
interface an external signal processor like an equalizer,  
compressor, noise gate, reverb and other audio devices.  
For more information on the channel INSERT points, see  
the section, “Using the Channel Insert Jacks” on page 13  
of this manual.  
Line Level Input - Stereo Input Channels  
4
You can connect the outputs from stereo devices such as  
synthesizers, drum machines, effects processors or any  
stereo line-level signal. Use the LEFT input when con-  
necting a mono input signal to the Stereo Input channels.  
The LINE inputs have a nominal operating level of -  
40dBV through - 10dBV. TRS phone jacks Connector pin-  
out - Sleeve: Ground, Tip: Hot (+), Ring: Cold (-)  
4
MASTER SECTION INPUT AND OUTPUT JACKS  
The MDR1064 features several output connectors allowing you to interface a variety of external devices. A  
stereo recording device, such as a cassette recorder, can be connected to the 2 Track jacks, and power ampli-  
fiers or powered monitors can be connected to the CONTROL ROOM and MAIN output jacks.  
10  
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MDR1064 Input and Output Connections  
MAIN MIX LEFT/RIGHT XLR OUTPUTS  
5
6
In a live sound application, the LEFT/ RIGHT MIX outputs are connected to a power amplifier or powered speak-  
ers. In a recording application, the LEFT/ RIGHT MIX outputs  
are used to connect to the inputs of a stereo device such as  
computer sound card, DAT, or cassette recorder.  
5
MAIN MIX LEFT/RIGHT 1/4-INCH OUTPUTS  
7
In a live sound application, the LEFT/ RIGHT MIX outputs are  
6
connected to a power amplifier or powered speakers. In a  
recording application, the LEFT/ RIGHT MIX outputs are used  
8
to connect to the inputs of a stereo device such as computer  
sound card, DAT, or cassette recorder.  
CONTROL ROOM LEFT/RIGHT OUTPUT  
7
9
The Control Room outputs are used to connect a studio moni-  
tor system. The Control Room outputs have the same output  
as the L/R MIX, however, the level can be adjusted indepen-  
dently from the main mix using the C ROOM/HEADPHONES  
control.  
10  
11  
HEADPHONE OUTPUT  
12  
8
9
You can connect a standard pair of stereo headphones to the PHONES jack and depending on the position of  
the 2T TO CR switch, you will hear either the 2-Track input or the MAIN mix.  
AUX Send 1  
The signal present at the AUX1 output is sent from the AUX1 bus, which is fed from the AUX 1 send on the input  
channels. The AUX 1 output can be used as the EFFECTS SEND bus in a live sound situation by connecting the  
output to a power amp an external effects device.  
AUX Send 2  
10  
11  
The signal present at the AUX 2 output is sent from the AUX 2 bus, which is fed from the AUX 2 send on the  
input channels. The AUX 2 output can be used as the MONITOR MIX bus in a live sound situation by connecting  
the output to a power amp and monitor speaker.  
AUX RETURN 2 LEFT/RIGHT  
The AUX RETURN 2 LEFT/RIGHT are stereo inputs that are generally used to connect the outputs of an effects  
processor, but can also accept the signal from any line level source like a keyboard, recorder and even another  
mixer. The signal connected to the AUX RETURN 2 LEFT/RIGHT will feed the main LEFT/RIGHT MIX bus. The  
overall level is controlled by the AUX RET 2 knob located in the master section on the front panel. Use the  
LEFT/MONO input when connecting a mono input signal to the AUX RETURN.  
AUX RETURN 1 LEFT/RIGHT  
12  
The AUX RETURN 1 LEFT/RIGHT are stereo inputs that are generally used to connect the outputs of an effects  
processor, but can also accept the signal from any line level source like a keyboard, recorder and even another  
mixer. The signal connected to the AUX RETURN 1 LEFT/RIGHT will feed the main LEFT/RIGHT MIX bus. The  
overall level is controlled by the AUX RET 1 knob located in the master section on the front panel. Use the  
LEFT/MONO input when connecting a mono input signal to the AUX RETURN.  
14  
13  
13 2TR INPUT  
The MDR1064 features dual RCA connectors for the left and right 2-track input. You can  
use these inputs to connect a CD, Cassette, Mini Disk, DAT or the output from a computer  
sound card. To listen to the input connected to the 2T IN, be sure to check the position of  
the 2T To Mix and 2T TO CR switches. For more information on using the 2 Track inputs, see  
the section “PLAYING BACK A CD USING 2T TO MIX ” on page 14 of this manual.  
2TR OUTPUT  
14  
If you want to record the mix from your MDR1064, you can use the 2-track OUT connec-  
tors. The dual RCA connectors can be connected to a CD, Cassette, Mini Disk, DAT or  
even the input of a computer sound card for hard disk recording. For more information on  
using the 2 Track outputs, see the section “RECORDING A MIX FROM THE MDR1064 ” on page 14 of this manual.  
11  
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Operating the MDR1064  
BASIC OPERATION  
The following section explains the basic operation of the MDR1064.  
CONNECTING MICROPHONES AND INSTRUMENTS  
1. Before connecting mics or instruments, make sure that the power of all your systems components including the  
MDR1064 is turned off. Also, make sure that the MAIN LEVEL and PHONES / CR controls are turned all the  
way down.  
2. Connect the cables to your microphones and instruments, and insert the other end of the cable firmly into the  
appropriate input on the MDR1064.  
NOTE: SETTING THE INPUT GAIN - When connecting a microphone to channels 1 through 6, it’s a good idea to  
start with the Gain Control turned all the way down. Set the input fader to the "0" position and slowly raise the  
GAIN control until you see the CLIP LED turn on. Now, back the GAIN control down so that the CLIP LED only  
lights for a short time during the loudest input the channel will see.  
3. Switch on the power of any peripheral  
devices, and then power up the MDR1064.  
NOTE: It is important to remember the  
Golden Rule of audio … " LAST ON, FIRST  
OFF". Translated, this means that when turn-  
ing on your system, you should always turn  
your power amplifiers or powered monitors  
on LAST, and when turning your system off,  
turn your power amps off FIRST. This helps  
avoid any loud pops caused by rush current  
at power up, or down, which can sometimes  
damage loudspeakers.  
4. Turn on your power amp or powered  
monitors and raise the level control to the  
manufacturers recommended operating  
level.  
5. Set the MAIN LEVEL control in the  
MDR1064’s master section to the "5"  
position.  
6. While speaking into the mic (or playing  
the instrument), adjust the channel  
LEVEL control so that the "0" LED of the  
MAIN section VU level meter lights occa-  
sionally.  
7. You can shape the tone of each channel  
by adjusting the equalizer controls as desired.  
NOTE: You may need to adust the channel LEVEL control to compensate for the slight changes in level after  
using the channel equalizer.  
12  
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Operating the MDR1064  
SENDING AN INDEPENDENT MIX TO THE MONITOR SPEAKERS  
The MDR1064’s AUX1 auxiliary send can be used to feed a separate set of amplifiers and loudspeakers for stage  
monitors. This lets you build one mono mix for the amplifiers and monitor speakers facing the musicians, and the  
other stereo mix for the amplifiers and speakers facing the audience.  
1. Raise the AUX1/MON controls for the channels that you wish to hear from the monitor speakers.  
NOTE: The AUX1 controls are "PRE-FADER SENDS" which means they are not affected by the level  
settings of each channel. This allows you to create a mix for the monitors that is independent of the main  
LEFT and RIGHT MIX.  
2. In order to get the most gain from your monitor mix, use an external graphic equalizer (like a Samson S curve  
131) to cut out any frequencies that cause feedback.  
0
10  
0
10  
0
10  
0
10  
0
10  
0
10  
0
10  
0
10  
USING THE CHANNEL INSERT JACKS  
To further control your signal, channels 1-6 on the MDR1064 feature an insertion point, or “effects loop”, on one  
1/4-inch phone jack, INSERT SEND and RETURN. An insertion point is a patch-point that interrupts the signal,  
allowing you to bring that signal outside to  
be processed by another device. You can  
use these connections to interface an  
external signal processor like an equalizer,  
compressor, noise gate, reverb and other  
audio devices. A common application for  
the MDR1064’s insert point is using a com-  
pressor.  
To send a signal to an external processor,  
use a standard 1/4-inch “Y” insert cable to  
connect the MDR1064 channel insert point.  
Connect the TRS (TIP / RING / SLEEVE)  
plug to the channel INSERT point, and  
then, connect the 1/4-inch (TIP / SLEEVE),  
INSERT SEND plug to the input of the  
external processor. The signal is sent back  
to the MDR1064, using the 1/4-inch (TIP /  
SLEEVE), INSERT RETURN plug connect-  
ing to the output of the external processor.  
The diagram below shows a typical appli-  
cation for using a compressor (in this  
example a Samson C com opti) in the  
MDR1064’s insertion point. Also below, is a  
diagram showing the wire for the TRS ‘Y”  
Insert cable.  
13  
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Operating the MDR1064  
USING AN EXTERNAL EFFECT  
If you prefer to use an external device for effects process-  
ing, you can easily connect the unit using the MDR1064  
AUX 2 bus. Follow the simple steps below to interface  
your processor:  
1. Connect the AUX 2 OUTPUT to the input of the exter-  
nal effect processor.  
2. Connect the outputs of the effect processor to the  
AUX 2 RETURN located on the MDR1064’s master  
section.  
3. Set the MAIN LEVEL control to the "5" position.  
4. Raise the AUX 2 knobs for the channels to which you  
want the external effect to be applied.  
5. Set the input level of the external effect so that the  
sound is not distorted and so that the effect’s input  
meter does not indicate a clipped signal.  
6. Use the AUX RETURN 2 control to adjust the level of the effects processed by the external effects device.  
PLAYING BACK A CD USING 2T TO MIX  
The MDR1064 has a dedicated input for playing back a stereo device such as a CD, Tape or Mini Disk. Below is  
a description of how you can play back a CD, Tape or MD using the MDR1064’s 2 TRACK INPUT.  
1. Turn the MAIN level control all the way down.  
2. Press the 2TK TO MIX button down.  
3. Adjust the MAIN LEVEL control in the master section  
to the "5" position.  
4. Start playback on the CD, Tape or MD player, and  
use the MAIN LEVEL control to set the desired level.  
RECORDING A MIX FROM THE MDR1064  
You can record the audio from the MDR1064’s mixer  
section including the MIC, LINE, 2T IN and AUX inputs to  
a Cassette deck, MD, DAT or any other type of recorder  
using the 2T OUT outputs. Simply connect the  
MDR1064’s 2 TRACK OUT to the input jacks of the  
recorder as shown in the diagram on the right and follow  
the steps below.  
1. Adjust the MAIN LEVEL control in the master section to the "5" position.  
2. Set a clean signal using the recorder’s input level controls and meters.  
3. Press RECORD.  
4. Play back using as described in the previous section "PLAYING BACK A CD USING 2T TO MIX".  
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MDR1064 System Set-Ups  
MDR1064 LIVE SOUND SET-UP  
15  
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MDR1064 System Set-Ups  
MDR1064 RECORDING SET-UP  
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MDR1064 Wiring Guide  
CONNECTING THE MDR1064  
The are several ways to interface the MDR1064 to support a variety of applications. The MDR1064 features bal-  
anced inputs and outputs, so connecting balanced and unbalanced signals is possible.  
Unbalanced 1/4” Connector  
Balanced TRS 1/4” Connector  
XLR Balanced Wiring Guide  
1/4-inch TRS “Y” Insert Cable Wiring Guide  
17  
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MDR1064 Specifications  
Mono input channels  
Microphone input  
electronically balanced, discrete input con-  
figuration  
Frequency response  
Distortion  
Gain range  
SNR (Signal to Noise Ratio)  
Line input  
Frequency response  
Distortion (THD & N)  
Sensitivity range  
10Hz to 45kHz  
(THD & N) 0.005% at 4dBu, 1kHz  
0dB to +40dB (MIC)  
105dB  
electronically balanced  
10Hz to 45kHz  
0.005% at 4dBu, 1kHz +  
-10dBu to +30dBu  
Stereo input Channels  
Line input  
Balanced  
Frequency response  
Distortion (THD & N)  
10Hz to 45kHz  
0.005% at +4dBu, 1kHz  
Impedances  
Microphone input  
Channel Insert return  
All other inputs  
Tape out  
4.5k Ohm  
2.5k Ohm  
14.8k Ohm or greater  
1k Ohm  
All other output  
120 Ohm  
Equalization  
Hi shelving  
Mid bell  
+/- 15dB @12kHz  
+/- 15dB @2.5kHz  
+/- 15dB @80Hz  
75Hz, 18dB/oct.  
Low shelving  
Low Cut filter  
Main Mix Section  
Noise (Bus noise)  
Levels full down: -100dBr (ref.:+4dBu)  
Level set to 0 dB: 90dBr (ref.:+4dBu)  
+22dBu balanced XLR,  
22dBu unbalanced, 1/4" jacks  
to +15dB  
Max output  
AUX Return gain range  
AUX Sends max out  
Power Consumption  
+22dBu  
15W  
Power supply (AC/AC Adaptor)  
Main voltage  
USA/Canada 108 - 132V, 60Hz  
Europe 210 - 230V, 50Hz  
U.K./Australia 240V, 50Hz  
Physical  
Net weight  
6.8 lb. (3.1Kg)  
Shipping weight  
Dimension (W D H)  
8.8 lb. (4.0Kg)  
12.2” x 12.5” x 2.8” (310mm x 318mm x  
70mm)  
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MDR1064 Block Diagram  
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Notes  
20  
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Samson Technologies Corp.  
575 Underhill Blvd.  
P.O. Box 9031  
Syosset, NY 11791-9031  
Phone: 1-800-3-SAMSON (1-800-372-6766)  
Fax: 516-364-3888  
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