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Left

Right

Aux

SMR 821 User Manual

Page 16

http://aa.peavey.com  copyright 2000 All Rights Reserved

Presentation Room

What exactly is a “Presentation Room” anyway? Well, it could be many things.  It could be a small board room in a
corporate environment, or a large theatre-style classroom in a major university.  Or, it could be a folding table in your
shop, used to present new ideas to your installation crew.  Basically, any place that ideas or information can be pre-
sented to a group of people could be classified as a “Presentation Room”.  In this example, we will assume that our
Presentation Room has a sound system, video display system and a means to control these systems centrally or by
remote control.

Control

System

L

C

R

Audio From

Video 

System Features:

- Microphone Inputs for speech reinforcement on channels 1, 2 and 3 assigned to the Aux Bus 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-channel playback with dialog on the center (AUX) bus and
the music bed on the stereo (LEFT, RIGHT) bus.
- Stereo tape playback on Channel 7 distributed to Left, Right and Center channels.
- Stereo CD playback on Channel 8 distributed to Left, Right and Center channels.
- Interface with control system with dry contact, resistance and voltage control for Tape/CD select and overall volume control.
- Outputs for 3 channels of audio. Left/Right and Aux. The Aux bus provides the audio for the center channel.

The Control System in this example is typical of many popular software based systems.  The control circuit that is connected to
the SMR-821 would be a dry contact or variable resistance type of connection.  Typically, the source controls, in this case the
CD player and the tape deck, would be infrared control connections.

Stereo 

Loudspeakers

Center

Loudspeaker

Содержание SMR 821

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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