LS-671~VRC

This is a simple speaker that is used with the SINCGARS series radios. This speaker can be adapted for use with other systems. this is an amplified speaker and will need 24 volts to function properly.

Usage

The

Simple hookup for use as a general speaker

PINOUT

A - Ground (Both Audio and Power)

this is used for both the audio ground and a power ground

B - Unswitched 24v

This is used as a constant 24v source into the speaker, to use the speaker this is required as a minumum

C - Switched 24V in

This allows 24v to be supplied to PIN D when the power switch is turned on

D - Switched 24V out

24volts is applied here when PIN C is hooked up, when the power switch is turned on

K - RX Audio in (hook audio to this)

receive audio source is hooked here, this shoudl be isolated with a transformer if a 12volt radio is used

J - Remote PTT

S - Routed to PIN A, Ground in normal cabling

this is usually the PTT line in VIC1 configurations, since this is routed the Ground, hooking this to a VIC1 using the wrong cable will cause the speaker to key the radio.

U - Transmit Audio

To make this function as a simple speaker, connect the following:

Additional Images

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