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Help wiring 1/4" stereo female to mono speaker.
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AASteveo
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31st December 2012
Old 31st December 2012
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Help wiring 1/4" stereo female to mono speaker.

I've got this old radio that takes two RCA inputs, but I'm trying to just mount a 3 pin female 1/4" jack to it so I can more easily plug in. The radio only has one speaker and the 1/4" jack that I have has tip, ring and ground. I have no idea which one is hot and which is cold, but I don't think it matters. I don't see a ground, so I'm just going to lift it I guess.

I found a site that I thought explains what I'm trying to do but I think mine is a different situation. This site says to jump the cold to the ground.
How to Wire an XLR to a 1/4" Jack

When I do that, I only get the right side.

Is there a way to take a stereo 1/4" plug and sum it to mono?
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31st December 2012
Old 31st December 2012
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Ethan Winer's Avatar
 
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Quote:
Originally Posted by AASteveo View Post
Is there a way to take a stereo 1/4" plug and sum it to mono?
You can't just combine two power amplifier outputs to mono by soldering them together. You could use two 10 Ohm resistors, but that will lose at least half the volume, and the resistors need to handle the wasted power meaning they'll be large and expensive.

--Ethan
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31st December 2012
Old 31st December 2012
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Wha?

I am not at all sure what you are describing. But guessing, you want to create a jack line input to your radio. If that is the case I recommend a two pole quarter inch jack socket. An inline one. Solder two single core shielded cables to the Jack Socket, creating a Y. Solder RCA Jacks on to the two ends.
I used to use an old valve radio as an electric guitar amp in this way.
DD
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