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gychang 27th July 2011 11:19 AM

3.5mm panel jack hookup
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I am having difficulty with hookup on my t-amp with this panel jack (3.5mm).

I asked partsexpress and their answer is:

The #1 terminal (short silver) is Tip (left channel +), the #2 terminal (gold/copper) is Ring (right channel +), and the remaining terminal (long silver) is Sleeve (ground/common), in regard to standard TRS wiring.

Is this correct?, I thought otherwise.



Mooly 27th July 2011 11:29 AM

Sounds reasonable... the long one is "ground" and should connect to the main body of the socket.

As to which is left and right of the other two... well, there are only two choices :)

Try it with headphones and a DVM on ohms to "click" the phones and identify L and R

gychang 27th July 2011 11:34 AM


Originally Posted by Mooly (
Try it with headphones and a DVM on ohms to "click" the phones and identify L and R

I am mounting this on my amplifier case (instead of RCA inputs), being relatively new to electronics not sure what DVM means...

Mooly 27th July 2011 11:41 AM

DVM is Digital Multimeter :) An analoge one will do just as well.

You can't really go wrong. The long terminal is ground. That is the same as the outer part of the RCA sockets. The other two pins are the left and right. If you get those wrong then all that happens is the channels are reversed... in which case swap them over.

Mooly 27th July 2011 11:43 AM

Just to add... using a meter on ohms means there is a small voltage at the probes of the meter. It's enough to make a headphone "click" when you put it across the connections.

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