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Peavey Electronics Corp.

Welcome

Thank You!

Thank you for purchasing the SMR 821 Mic/Line Program Mixer.  This prod-
uct is designed to provide years of trouble-free operation, and high quality
audio performance.  We sincerely hope that you enjoy your new SMR 821,
and will find other products in the Peavey Architectural Acoustics product
line to supplement your new mixer.  We are confident that you will find the
SMR 821, as well as other Architectural Acoustics products to be of the
highest quality available.

This manual was written to provide as much information as possible for
your new Peavey Architectural Acoustics product.  It is our sincere desire
that you enjoy your purchase.  We feel that the best way to fully enjoy any
purchase is to have an in-depth understanding of the product’s features,
functionality  and performance characteristics.  We hope that this manual,
along with the manuals of our other products will provide this.  If you
require additional information that this manual does not provide, please let
us know.  We are always looking for better ways to provide information
about our products, and your input is always appreciated.  If you have a
comment about this manual, or would like to make a suggestion, please
write to:  Peavey Electronics Corp., Architectural Acoustics Division, 711 A
St., Meridian MS, 39301.  Thank you again for using Peavey!

What’s In The Box?

The SMR 821 is packaged in a single container. This container includes the
following items:

1- SMR 821 Mic/Line Program Audio Mixer
1- IEC removable power supply line cord 

(120VAC Domestic, 230VAC Export)

2- 5-screw Euro connectors*
9- 3-screw Euro connectors*
1-  Plastic Security Cover for EQ controls*
1- User Manual/Literature Package
4- Rubber feet

* Asterisk indicates that these items are shipped installed on the SMR 821.  

If any of these items are missing, please contact your Authorized Peavey
Architectural Acoustics contractor/dealer.

Description

The SMR 821 is a professional Microphone and Line level audio program
mixer intended for fixed installation applications.  This single rack-mount
package is designed to provide high quality audio performance, versatile
control options and simple, easy to use controls.  Engineered from the
ground up with the commercial sound systems contractor in mind, the SMR
821 includes removable screw connectors for easy installation and cost effec-
tive servicing, as well as limited front panel user control. 

With three independent audio output buses, the SMR 821 is perfect for
applications where stereo output and simple monitoring is required. Six of
the eight inputs include high quality microphone pre-amplifiers and separate
gain controls.  Additional rear panel controls provide even more flexibility
for proper gain setup, output assign and remote control features.

Summary of Contents for SMR 821

Page 1: ...SMRTM 821 Stereo Mic Line Program Audio Mixer User Manual A r c h i t e c t u r a l A c o u s t i c s...

Page 2: ...red If this product is to be mounted in an equipment rack install rear support if required by the rack manufacturer Care should be taken to ensure that the installation is clear of possible sources of...

Page 3: ...cs Division 711 A St Meridian MS 39301 Thank you again for using Peavey What s In The Box The SMR 821 is packaged in a single container This container includes the following items 1 SMR 821 Mic Line P...

Page 4: ...al 100 Hz low cut filter switch for all mic inputs Mute bus with Channel 1 rear panel threshold control Select switch for routing microphone mix bus post remote control All audio I O on removable conn...

Page 5: ...t LEDs indicate which stereo input channel is feeding the mix buses 7 LOW EQ The Low EQ control is a shelving type active tone control 15 dB at 70 Hz 8 LOW MID EQ The Low Mid EQ control is a bandpass...

Page 6: ...tch is enabled the left and right mix buses are affected by the activity of the muting circuit When this switch is defeated only the left bus is affected by the muting circuit 8 MODE Selects either St...

Page 7: ...n to the SMR 821 is easy to disconnect the unit can be removed from an equipment rack easily without have to disturb fixed wiring harnesses Although the SMR 821 does not generate enough heat to warran...

Page 8: ...be shielded Refer to the following illustrations for each type of connection Audio Input The inputs to the SMR 821 are balanced This means that there are three wires for each connection a positive neg...

Page 9: ...e switch selects either Stereo mode or Mono mode individ ually for Channel 7 or 8 In the Stereo mode the Left input signal feeds the Left mix bus and the Right input signal feeds the Right mix bus via...

Page 10: ...ter or slave mode of operation A stand alone unit should always be in the master mode The EQ switch places the 4 band equalizer in or out of the Left and Right signal paths In the OUT position the equ...

Page 11: ...Wiper Leg C Shield Potentiometer CCW Leg SHD Remote Volume Ch 7 8 Select Switch Ch 7 8 Select LEDs Ch 8 Ch 7 The SMR 821 provides a powerful external control option This feature allows you to configur...

Page 12: ...inates red when the signal level is near clipping The Level Control adjusts the signal level sent to the mix buses This control should be operated near the mid point of its travel to assure an optimiz...

Page 13: ...f the Channel 1 muting circuit When this switch is defeated only the left bus is affected by the muting circuit Use the Channel 1 Mute Threshold control to set the trigger point to activate the mut in...

Page 14: ...are fur ther split into two separate zones Hostess paging ducks music source using the Channel 1 threshold feature This is normally used for the your table is ready page Remote control of volume at th...

Page 15: ...io is fed to all three rooms The music ON OFF control is actually the Channel 7 8 Remote Select but since there is no music on Channel 7 the switch acts as an OFF control The emergency page audio is w...

Page 16: ...only Inputs for audio from video switcher Left Center and Right audio channels connected to channels 4 5 and 6 assigned to Left Center and Aux output buses respectively This will provide for 3 channe...

Page 17: ...r a turn it down knob You can do this and more with the SMR 821 System Features Separate loudspeaker systems for the live music area and the rest of the facility Background music source is defeatable...

Page 18: ...required for speech presentation or live musical performance System Features Independent audio feeds for the Sanctuary and the Nursery Foyer Hallways and Restrooms Aux feed with separate level control...

Page 19: ...put Transformer accessory be installed See the Options Modifications section later in this manual for installation instructions System Features Independent paging and music audio for each zone All cal...

Page 20: ...e volume control and channel assignment In some cases you may not want every microphone to log to tape Keeping the recorder feed separate provides this functionality System Features 12 microphone inpu...

Page 21: ...r condenser microphone is connected This phantom power switch is located in the BUS ASSIGN switch bank for each channel To activate phantom power turn down all Level Controls and then place this switc...

Page 22: ...or posting a request on the message board Finally if you still cannot get the information you need don t hesitate to call us We have extensive phone support services and will be happy to assist you T...

Page 23: ...aside 3 Remove the 5 screws securing the rear panel to the chassis 4 Remove the 5 screws securing the front panel to the chassis 5 Carefully turn the SMR821 upside down 6 Remove the 11 screws securin...

Page 24: ...Cut Jumper Here Cut Resistor Here NOTE Cuts are typical for each channel where the transformers will be installed Do not cut these jumpers UNLESS a transformer is installed for that channel BE CAREFUL...

Page 25: ...EOUSLY feed the Left Right and Aux output buses The Select action of the switch is defeated Refer to Figure 15 Cutaway of circuit board showing jumper location for Channel 7 8 Modification while perfo...

Page 26: ...SMR 821 User Manual Page 26 http aa peavey com copyright 2000 All Rights Reserved Figure 16 SMR 821 Functional Block Diagram...

Page 27: ...ey Electronics Corp SMR 821 STEREO MIC LINE PROGRAM MIXER 4 Band Equalizer 0 dBr 4 dBu 20 20 18 16 14 12 10 8 6 4 2 0 2 4 6 8 10 12 14 16 18 d B r 20 20k 50 100 200 500 1k 2k 5k 10k Hz Figure 17 SMR 8...

Page 28: ...a nom inal output with controls set at maximum gain Nominal settings are defined as all controls set at center detent for nominal output Microphone gain control is as specified Input Level dBu Input...

Page 29: ...s down All controls nominal All channels assigned Mic gain minimum Aux 95 dB 92 dB 81 dB All Level controls down Master Level control nominal Channel Level controls down All controls nominal All chann...

Page 30: ...ators Power Requirements 20Hz 20kHz 0dB 1dB 0 1 typical 20Hz 20kHz Mic to L R out 22Hz 22kHz BW 128dBu Mic input terminated with 150 ohms 70dB typical 20Hz 20kHz 70dB typical 60dB typical 48 Volts at...

Page 31: ...em and your sales receipt or other proof of date of purchase to your Authorized Peavey Dealer or Authorized Peavey Service Center OR 2 Ship the defective item prepaid to Peavey Electronics Corporation...

Page 32: ...subject to change without notice A product of Peavey Electronics Corporation 711 A Street Meridian MS 39301 USA 601 483 5376 FAX 601 486 1678 http aa peavey com Copyright 2000 All Rights Reserved 803...

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