Peavey SMR 821 user manual External Control Connections, Remote Volume Control Connections

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Connections

External Control Connections

The SMR 821 provides a powerful external control option. This feature allows you to configure remote controls for the Master Left/Right volume and the Channel 7/8 select function. The Remote connector provides a simple way to make these connec- tions. NOTE: Use only shielded cable! Refer to the illustrations below.

Remote

Volume

This example is used to control the Left/Right Master Volume Control from a remote location with a simple connection on the back of the unit. A 10k pot will provide approximately 0 to 30dB of attenuation. A 100k pot will provide about 0 to 60dB of attenua- tion. If desired, a control voltage can be inserted to “command” attenuation instead of a pot. This voltage is inserted into the “C” input and is positive referenced to SHD. NOTE: THE CONTROL VOLTAGE SHOULD NEVER EXCEED 11 VOLTS DC.

Remote Volume Control Connections

Volume Control to Potentiometer CW Leg (V) Control to Potentiometer Wiper Leg (C) Shield Potentiometer CCW Leg (SHD)

Figure 5. Remote Volume Control Connections

 

 

 

 

 

 

This example shows the connection for remote selection of the

 

 

 

 

 

 

Channels 7 or 8 input select feature. The selection is done by con-

 

 

 

 

 

 

necting a momentary switch between SEL and SHD. Each time

 

 

 

 

 

 

the switch is actuated, the channel selection is toggled and alter-

 

 

 

 

 

 

nated between Channel 7 and 8. This remote operation functions

 

 

 

 

 

 

in conjunction with the front panel Select Control. A bi-color

 

 

 

 

 

 

LED or 2 individual LEDs may be connected as shown in the

 

 

 

 

 

 

diagram for remote indication of the selected stereo line input.

 

 

 

 

 

 

NOTE: The IND circuit can supply a maximum of 6ma for the

 

 

 

 

 

 

LEDs’. Take care that you do not exceed this current limitation.

 

 

 

 

 

 

Remote Channel 7/8 Select Connections

 

 

 

 

 

 

Shield (SHD)

 

 

 

 

 

 

 

 

 

 

 

 

Channel 7/8 Select (SEL)

 

 

 

 

 

 

 

 

 

 

 

 

Indicator LED Output (IND)

Ch 7-8

 

 

Ch 7-8

 

 

 

 

 

 

 

 

Select

 

 

Select LEDs

 

 

Switch

 

 

Ch 8

 

 

 

 

 

 

 

 

 

 

 

 

Ch 7

 

 

Figure 6. Remote Channel 7/8 Select Connections

 

 

 

 

 

 

 

 

 

Peavey Electronics Corp

 

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Contents SMRTM821 Page Thank You What’s In The Box? Description Features Front Panel Features Rear Panel Features Installation Un-Balanced Microphone or Line Level Input ConnectionsAudio Input Balanced Microphone or Line Level InputUnbalanced RCA connections Stereo InputsMaster Bus & Mute Link Connections Master Bus Output & Link ConnectionsAudio Bus Outputs, Typical For Each Bus External Control Connections Remote Volume Control ConnectionsInput Channel Controls ConfigurationConfiguration Restaurant System FeaturesEmergency Page Source Hotel Meeting RoomsPresentation Room Stereo Loudspeakers Center System FeaturesBar Small House of Worship Supervisor Office All Call Zone 1 Assembly PlantPlant Paging Zone 2- Warehouse Shop FloorBus Link CourtroomFrequently Asked Questions USA Tech Support Warranty RegistrationWarranty altogether Optional FeaturesInstalling the Optional Microphone Input Transformers Defeat the functionality of the Channel 7/8 select switchCut Jumper Here Cut Resistor Here Channel Cut Jumper Here Channel 7/8 ModificationSMR 821 Functional Block Diagram SMR 821 Stereo MIC/LINE Program Mixer Input Sensitivity SpecificationsDimensions H x W x D Weight Mounting Connections Gain Output SpecificationsNoise Page Architectural Acoustics Product of Peavey Electronics Corporation
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