Advice on Stereo to Mono

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Advice on Stereo to Mono

Postby tdh10 » Wed Oct 10, 2018 8:09 am

I am looking for a quick, cheap and dirty way to turn a stereo signal from a TRS "jack" plug into a mono signal on a TS "jack" plug on the other end of the cable.

A bit of Google-ing has told me that I must just connect both the Tip and Ring of the stereo plug to the Tip of the mono plug, preferably with a very small resistor, if possible, to avoid clipping.

Will this work, before I go and make a mess of soldering my connections too many times?

(P.S. I already know how the quick and dirty way to "convert" a balanced TRS to an unbalanced TS. This is NOT what I am trying to do.)

Thanks for any help!

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Re: Advice on Stereo to Mono

Postby CrocoDuck » Wed Oct 10, 2018 3:43 pm

It should work. If your amp output impedance is small, and the input impedance of the load is high, then you essentially sum the voltages like that. That said, it might not work otherwise, as it might force the output stage to drive too much current, you might have very poor audio and distortion. I guess in that case a resistor could indeed help, but you will need some trial and error for the value. I don't think it can damage your equipment, but I am not taking any responsibility over that claim.

Maybe give us more info: what is the stereo source? What is the mono destination?
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Re: Advice on Stereo to Mono

Postby English Guy » Thu Oct 11, 2018 12:20 pm

The other option is a small mono mixer. At one time you used to be able to get 4 into 1 mixers relatively cheap.

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Re: Advice on Stereo to Mono

Postby nikgnomicradio » Thu Oct 11, 2018 1:53 pm

do not connect stereo channels without resistors, they are necessary to protect stereo outputs from signal source

This is close to what you need, just leave out 4th resistor for 2nd mono output

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Re: Advice on Stereo to Mono

Postby 42low » Fri Oct 12, 2018 11:19 am

I have made several cables for that to plug in stereo outs into my mono table ins. My table has extended settings by which i can connect hardly any kind off signal strength.

Simply connect both left and right out at the tip of the mono plug and the ground from the stereo to the ground of the mono plug. That's all and the most easiest way to do it.
Remind that the gear you want to plug it in must have the ability to handle the signal. If this is a problem you have to find other solutions.

You could also choose to use a split stereo to two mono plugs at the end to get two mono tracks for each stereo part. But this is only useful in a minority off settings.

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