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Kenwood & EF Johnson Forum - For discussion of land mobile radio products manufactured by Kenwood or EF Johnson. For discussion of Kenwood Amateur Radio Equipment, please use the Amateur Radio Equipment forum.

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Old 06-09-2009, 9:19 PM
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Talking TK-790 external speaker pinout

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
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Old 06-09-2009, 9:48 PM
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Should be pins 2 and 6
Attached Images
File Type: pdf tk790 pins.pdf (35.1 KB, 5833 views)
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Old 06-09-2009, 10:38 PM
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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
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Old 06-09-2009, 10:51 PM
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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
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Old 06-09-2009, 11:08 PM
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Default Part numbers???

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
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Old 06-09-2009, 11:16 PM
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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 ?
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Old 06-13-2009, 12:37 PM
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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.
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Old 06-13-2009, 4:51 PM
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Quote:
Originally Posted by mrweather View Post
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
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Old 06-19-2009, 6:11 PM
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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.

Last edited by mrweather; 06-19-2009 at 6:15 PM..
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Old 01-21-2010, 10:03 AM
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On the 25 pin D connector, if I bring the audio out of pin 17, do I need to ground it with anything? I don't want to brick my radio. I'm using a TK-790 for a feed here, but need some audio!

TIA,
Tim
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Old 01-21-2010, 11:58 PM
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Pin 17 AFO and pin 18 earth (ground) is a very good unbalanced audio level to feed to a sound card. Do it right and use shielded cable.
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Old 03-31-2016, 7:56 PM
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Default No Audio

I just installed my TK 790H today, and have the remote kit hooked up. I have the ignition sense cable coming off the radio unit not the head. I have the sheet that shows the pinouts, and when I try and use either one of them, I don't get any sound. I tested the speaker and that works fine. It's just for some reason I cant get any audio at all. Any tips or thoughts?
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Old 03-31-2016, 8:09 PM
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Here is the manual look at page 18 and page 19
http://www.repeater-builder.com/kenw...rvice-2001.pdf
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Old 03-31-2016, 8:23 PM
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So if I read that correctly, I just have to run my ignition sense, and my speaker from the head unit not the big part of the radio?
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Old 04-05-2016, 3:42 PM
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Default external speaker installation / pinout

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Old 07-08-2018, 11:52 AM
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Question Shorted Pins?

Do pins on the 9 pin molex connector need to be shorted?

TK-790H
Full-featured Front Panel KCH-11 (remote mounted)

To use the speaker output from the KCH-11 in the dash (pins 10 & 11 on the 12 pin molex), do any pins need to be shorted on the base 9 pin molex?

Larry
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Old 07-08-2018, 3:59 PM
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Reference the diagram from post 15. It shows the jumper lead needed to route speaker audio to the control head. The jumper is between pins 3 & 6.
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