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Congratulations on your purchase of the Samson MDR8  mixer! The MDR8 is an eight channel mixer, with six low
noise microphone pre-amps, and built-in 24 BIT DSP effects processor. The MDR8 also features HDM (Hard
Disk Mode), which when engaged, provides a special monitoring and bussing mode ideal for interfacing with a
computer based hard disk recorder. Clean, clear sound reproduction with dazzling digital effects including Delay,
Chorus and lush Reverb, packaged in a rugged enclosure, ensure reliable high quality sound from performance
to performance.  Optimized for recording, live sound reinforcement and commercial installations, the MDR8 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 MDR8  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 MDR8 will operate trouble free for many years. We recom-
mend 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.

Introduction

Summary of Contents for MDR 8

Page 1: ...M D R S e r i e s M i x e r s EIGHT CHANNEL MIXER WITH 24BIT DIGITAL EFFECTS AND HARD DISK MODE ...

Page 2: ...allen into the unit the unit has been exposed to rain or moisture does not operate normally or has been dropped PRECAUCION Para reducir el riesgo de incendios o descargas no permita que este aparato quede expuesto a la lluvia o la humedad Para reducir el riesgo de descarga eléctrica nunca quite la tapa ni el chasis Dentro del aparato no hay piezas susceptibles de ser reparadas por el usuario Dirij...

Page 3: ...er Section 8 9 MDR8 Input and Output Connections 10 11 Operating the MDR8 12 16 System Set ups 17 18 MDR8 Wiring Guide 19 Specifications 20 Block Diagram 21 Copyright 2003 2004 Samson Technologies Corp Printed March 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 www samsontech com ...

Page 4: ...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...

Page 5: ...r faders on all channels and the master Mix outputs 2T LEVEL control allows you to mix in a CD DAT Cassette Computer Sound Card or Mini Disk with the channel faders 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 Five segment LED Meter with...

Page 6: ...4 Front and Rear Panel Layout ...

Page 7: ...ing a monitor system 18 MIX Left and Right main Mix output connectors 19 MONO OUT The Left and Right main Mix outputs are summed together to a monaural signal and sent out this connector 20 MONO OUT LEVEL Used to set the volume of the MONO mix 21 2TK LEVEL 2T TO MIX Level control used to mix the 2 track input 22 2 TRACK INPUTS OUTPUTS Connect a DAT Cassette Mini Disk or Hard Disk Recording system ...

Page 8: ...nd by 15dB and rotating it towards the left will cut the frequency by 15dB The fre quency centers range of boost or cut and equalizer type for each band are as follows High 12KHz 15dB shelving type Mid 2 5KHz 15dB peaking type Low 80Hz 15dB shelving type LOW CUT FILTER Each of the MDR8 s channels include a LOW CUT or high pass filter which rolls off the low frequencies from 80Hz and below at the r...

Page 9: ...the master section is not engaged the RECORD switch LED will be off and pressing the RECORD switch will have no effect This is the normal mode of operation for most live mixing situations however since the HDM provides some extra flexibility in signal routing the HDM can be used for zone mix ing as well For more information on the HDM see the section Using the HDM on page 15 of this manual FADER T...

Page 10: ...from the DSP return is mixed in to the AUX 1 MON You can use this to add effects to your monitor mix in a live sound mix or to your headphone mix in the studio Effect Preset List This section identifies the eight built in DSP effects presets Following is the effects pre set list 13 2TK LEVEL The 2TK LEVEL control is used to adjust the amount of signal that is sent from the 2T IN jacks to the main ...

Page 11: ...e Left and Right Mix bus be sure that the Left and Right Mix faders are pushed up to feed the signal to the Control Room and headphone outputs When the MIX 2T switch is in the down position the signal source is from the 2 TRACK input Since the sig nal source is now set to the 2 track input be sure that the 2TK LEVEL control is turned up to feed the signal to the Control Room and head phone outputs...

Page 12: ...r pin out Sleeve Ground Tip Hot Ring Cold Microphone Input Stereo Input Channels The MDR8 s stereo channels have a utility MIC input located on the Combie connector The utility MIC inputs have a nominal operating level of 50dB through 20dB The MIC inputs also feature 48V phantom power allowing you to use condenser microphones The Phantom Power switch located on the MDR8 s rear panel enables phanto...

Page 13: ...ut is used to send a signal to an external signal processor such as a delay or reverb The signal present at the AUX 2 output is sent from the AUX2 DSP bus which is fed from the AUX2 DSP send on the input channels CONTROL ROOM LEFT RIGHT The Control Room outputs are used to connect a studio monitor system The Control Room outputs have the same output as the L R MIX however the level can be adjusted...

Page 14: ... CLIP LED only lights for a short time during the loudest input the chan nel will see 3 Switch on the power of any peripheral devices and then power up the MDR8 NOTE It is important to remember the Golden Rule of audio LAST ON FIRST OFF Translated this means that when turning on your system you should always turn your power amplifiers or powered monitors on LAST and when turning your system off tu...

Page 15: ...st the effects return level The EFX control is the overall level control for the DSP effects processor NOTE If the effect sound is distorted even though the AUX DSP RTN 2 is turned down low lower the AUX2 DSP controls of each channel SENDING AN INDEPENDENT MIX TO THE MONITOR SPEAKERS The MDR8 s AUX1 MON auxiliary send can be used to feed a separate set of amplifiers and loudspeakers for stage moni...

Page 16: ... 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 MDR8 s 2 TRACK INPUT 1 Turn the 2TK LEVEL control and the LEFT RIGHT MIX level control all the way down 2 Press the MIX 2T button down 3 Adjust the LEFT RIGHT MIX faders in the master section to the 0 position 4 Start playback on the CD Ta...

Page 17: ...ow the examples below to use the HDM Set the MDR8 inputs fader all the way down and the L R MIX faders to the 0 position For this example we ll first record a rhythm track sequence from a MIDI keyboard any stereo track will do then do an overdub If you are using an import ed loop or internal sequencer skip the Recording section and go on to the Overdub section Recording Using HDM 1 Connect the out...

Page 18: ... MDR8 s 2Track Output to the input of the sound card 2 Connect a microphone to the MDR 8s Channel 1 microphone input and set a proper level using the GAIN control and peak LED 3 Engage the HDM switch The input Channel s REC LED will light dimly indicating the channel can be assigned to the RECORD bus 4 Press the RECORD switch on the MDR8 s channel 1 The input channel s REC LED will flash indicatin...

Page 19: ... monitor speak ers For inputs two micro phones are connected to channels 1 and 2 s low impedance inputs and the output of the Bass Direct Box is also connect ed to the low impedance input on channel 4 The Keyboards as well as the Lead and Rhythm Guitar signal processor s out puts are connected to the MDR8 s line inputs MDR8 s AUX OUT con nected to an external monitor amp MDR8 LIVE SOUND SET UP ...

Page 20: ...d head phone mix sent to a Samson S phone headphone amp For inputs two microphones are connected to channel 1 and 2 s low impedance inputs and the output of the Bass Direct Box is also connected to the low impedance input on channel 4 The Keyboards as well as the Lead and Rhythm Guitar signal processor s outputs are connected to the MDR8 s line inputs MDR8 RECORDING SET UP ...

Page 21: ...Balanced Wiring Guide CONNECTING THE MDR8 The are several ways to interface the MDR8 to support a variety of applications The MDR8 features balanced inputs and outputs so connecting balanced and unbalanced signals is possible Balanced TRS 1 4 Connector ...

Page 22: ...Hz LPF all control Min Main 89 dBu Aux Send 86 dBu Crosstalk 1 kHz w 30 kHz LPF Ch vs Ch 75 dB Input vs Output 87 5 dB Peak LED Sensitivity before clipping 5 dB CLIP Indicators Turn on THD 0 1 Headphone output 600 ohm load 100 mW Maximum Input Level 1 kHz 3dB Mic Input Mono Ch 10 5 dBu Line Input Stereo Ch 7 6 dBu Input Channel Equalizer 2dB High shelving 12 kHz 15 dB Mid peaking 2 5 kHz 15 dB Low...

Page 23: ...21 Block Diagram ...

Page 24: ...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 www samsontech com ...

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