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TK-790 basic head 45 watt

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scanner1

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Joined
Jan 16, 2003
Messages
65
Looking for some info on the pinout on the rear of this radio. The radio has the 9 pin square accessory plug on the back. Currently pin1 is used for ignition sense and pin 3 and 6 is jumped for the internal speaker. I want to hook up an external speaker. I was told i should remove the jumper for the internal speaker and run the external speaker from pins 2 and 6.

Wanted to check in here first. The radio is a new 45 watt with basic control head.

-Thanks.
 

Theroofable

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Premium Subscriber
Joined
Apr 14, 2010
Messages
39
If thats what it says in the manual, I cant remember what pins but it matches what the manual states.
 

mrweather

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Joined
Dec 19, 2002
Messages
913
Yes, the external speaker plugs in at pins 2 and 6.

Warning: do NOT ground the speaker or you'll blow out the audio amplifier.
 
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