I'm looking for an adapter which goes from a 3.5mm stereo plug to
3.5mm mono socket similar to this:
However I want the adapter to provide a mono/stereo switch.
Ideally one solid piece including the switch. An inline adapter
cable with a mono/stereo switch might be okay. I can't find
This is for carrying around so ease of use is important which
means anything with a box is no good.
I want the stereo signal to pass through the adapter as stereo.
Sometimes I want to plug stereo headphones into the mono socket of a
dictation machine which means the signal connection is made only with
the left channel of the stereo plug.
Sometimes I have a stereo source which I want to hear in mono on
(At other times, I just want to hear a stereo source in stereo as
Maybe I should write "mono output" rather than "mono socket".
As I said, the picture is not exactly what I want but similar. I
have used it to show the sort of one piece inline adapter I want.
The connections and the switch would be different.
A second best would be a similar one piece adapter with a 3.5mm
stereo plug and a 3.5mm stereo socket but permanently wired to
short the two signal leads to give dual mono output.
Quite hard to make one suitable for unspecified amplifier and headphone
combinations. Especially now the audio output of consumer items
intended for headphone use tends to be marginally adequate for H&S
As a quick and dirty solution, it works well enough and without
disaster whenever I tried it on what I guess would be a 100 to 200
I only wish there was a mono/stereo switch provided in equipment
but I hardly ever see one these days. On devices like a PC it
cold easily be implemented in software but on the audio editor and
players I have used it is never there.
In comp.mobile.android, on Sat, 19 Nov 2016 15:23:59 GMT, pamela
Yes, the switch used to be there, but you don't mean that the adapter
used to be sold, do you?
You might try sci.elecronics.repair
Months ago in computer ng's I tried to find a PC audio player which
would combine L and R. I had a pair of v. good PC speakers but one is
broken, and I have a friend who wants to play music from his laptop
through the wall into the kitchen. He wanted only one speaker, which
worked, out great, but I wanted him to get both channels. I coudln't
find the software, and so far he hasn't even thought of the problem. I
was over there a couple days ago and the speaker light was on, though no
sound was coming out.
You are right, it is not a short circuit, but for lack of better words...
Say that the L side tries to send 1 volt. Say the right side tries to
send 2 volts. What do you get? Well, undefined, you have to calculate on
each case. With resistive internal loads you might get the average
voltage, but output amplifiers would not typically have a resistor in
series with the load.
Because you have a voltage source trying to impose its voltage on
another voltage source. If the output circuitry is weak... yes, it might
At best, you get sound degradation. Distortion.
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