TK-790 external speaker pinout

wcu02mpa · #1 (**permalink**) 06-09-2009, 10:19 PM

Does anybody know the pinout for the external speaker leads on a TK-790. I assume it is with the 9-pin plug and not the 25-pin plug.

Thanks,

Mike

fire_master_21 · #2 (**permalink**) 06-09-2009, 10:48 PM

Should be pins 2 and 6

wcu02mpa · #3 (**permalink**) 06-09-2009, 11:38 PM

That did it. This radio has amazing audio; it is a step up from the 730 for sure. It has very crisp and clear speaker audio as well as signal reports. I plan on remote mounting this radio. Do I run the speaker leads from the 9-pin when remote mounted. I see there is a 12-pin connector, but am not sure what that is for.

Mike

fire_master_21 · #4 (**permalink**) 06-09-2009, 11:51 PM

pins 10 and 11

pins

3 6 9 12
2 5 8 11
1 4 7 10

should all be on the attached image from my first reply

wcu02mpa · #5 (**permalink**) 06-10-2009, 12:08 AM

I see it....DUH!!!! Firemaster.....would you happen to know the part number for the accessory plugs (from mouser or somewhere else)???? I would like both the 9 and the 12 pin plugs. I got some of the TK-730 plugs from mouser but am having trouble finding these.

Mike

fire_master_21 · #6 (**permalink**) 06-10-2009, 12:16 AM

I haven't had a need for anything from mouser in a while so I haven't checked them. However have you checked out Kenwood parts for all Kenwood electronics ?

mrweather · #7 (**permalink**) 06-13-2009, 01:37 PM

If you remote-mount your 790 and plug the speaker into the control head you'll be limited to 5 watts audio output. If you run the speaker wire back to the radio drawer you'll get the full 13 watts.

I run my external speakers to the drawers in my x90 radios.

n7maq-1 · #8 (**permalink**) 06-13-2009, 05:51 PM

Quote:

Originally Posted by mrweather

If you remote-mount your 790 and plug the speaker into the control head you'll be limited to 5 watts audio output. If you run the speaker wire back to the radio drawer you'll get the full 13 watts.

I run my external speakers to the drawers in my x90 radios.

There is a 0 Ohm resistor that you can move to give you the full AO from pins 10/11 on the C/H. I don't know the R number off the top of my head, I'll look it up and update this post.

Jim

mrweather · #9 (**permalink**) 06-19-2009, 07:11 PM

Correct. According to the service manual you move a jumper resistor from R628 to R627.

I've never done this so use at your own risk.