Question about JVC TH-C50 System

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JVC 8 pin pinout - speaker cable

Hi I called JVC no dice on the pinout diagram, I took the back off the sub no help's all cards and pathways, no wires to copy down. Some one must be capable of figuring the pin to speaker and common using a meter. Now I wish I had that skill. email me if you have a pinout, or make custom breakout cords. thanks B. [email protected]

Posted by flyinbrian on

  • Anonymous Mar 14, 2009

    I need the wire color schematics to fix my cord. It is for model THC5

  • girtas Apr 06, 2009

    Hi Cyphet !

    What pins to use if I want to input single stereo signal in simple amplifier (another audio system aux-in) ? Left, Right, Speaker Ground ?

    a.girts [a t] gmail dot com



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Looking at the connector, there are 3 rows of pins.
Starting with the first row closest to the alignment mark:
[Power On],[Center Speaker],[Sub Woofer]
[Surround Right],[Speaker Ground],[Surround Left]

If you are trying to connect two JVC units, you will need an 8-pin cable that has the SAME pins connected on each side. You will need to test this using a multimeter set to ohms or 'connectivity'.
There are other 8-pin cables out there like the one for apple networking, but they use a crossover pinout where pin 1 on one end = pin 3 on the other end. This is bad. JVC needs pin 1 to = pin 1.

This is a standard connector/pinout setup that JVC uses, so connecting a TH-C3 to a TH-C50 works fine. There is a bunch of intermixing that you can get away with. The only thing to keep an eye on is the power in watts that one unit sends and the other recieves. Worst case is that the speakers are quiter than expected or that you can turn the volume up so high that it can damage the speakers. In all cases, you should get desired volume somewhere on the dial.

If you are trying to wire the speaker set custom, then you will need to take note that an '8-pin' connector is actually a 9-wire connector. Along with the above pinout, you will need to add Case Ground, which is the metal circle that surrounds the pins. To make the speakers turn on, you will need to apply 12v to the Power On pin and ground the 12v source to the Case Ground outer ring.
The system takes 3 to 4 seconds to fully turn on after this connection is made. Speakers should be wired using the center pin for speaker ground and each other pin respectful to each speaker.

Posted on Dec 10, 2008

  • rabeyta709 Mar 02, 2011

    I have a Th-c50 unit and don't have the subwoofer system cord, can you use a regular s-cord to make that conection? or is my system useless with out it?

  • David Mar 07, 2021

    I know I need a 12-volt source to power on my JVC home powered subwoofer th30 model number what amperage should I use with that 12 volt




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Posted on Apr 06, 2008



Sold mine a few years but as I recall, speakers were easily connected to the Subwoofer. R U trying to extend the cable from the DVD player to the Sub? If U R, there is an Apple printer cable that works perfectly. Hope this helps

Posted on Jul 10, 2008

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