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What will happen if...

post #1 of 10
12/8/09 at 10:03pm
Thread Starter 
I've heard about running CMOY amps in dual mono, but what will happen if I do this:
(I said CMOY cos I don't want to risk it with something pricey)
I use RCAs from a random source. I put RCA splitters on each source.
I get the left rcas coming from the splitter. I feed one through the amps left channel as normal, but have the other left go backwards through the amp.
I do the same for the right channel/amp, and connect these (L+,L-,R+,R-, I'm assuming) to balanced headphones.

I have a bad feeling this is a really stupid idea.
I am not trolling, I just have little understanding of complex circuitry, but am very curious about the consequences.

Will my source, headphones or CMOYs be damaged?

This is my awful paint representation:
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post #2 of 10
12/8/09 at 10:58pm
Probably....
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post #3 of 10
12/8/09 at 11:14pm
depends, what kind of sauce is that? BBQ?
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post #4 of 10
12/8/09 at 11:19pm
Thread Starter 
4chan reference luvdunhill...
Probably what MrSlim?
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post #5 of 10
12/8/09 at 11:44pm
Quote:
Originally Posted by P4Z View Post
4chan reference
ah that explains a lot.
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post #6 of 10
12/8/09 at 11:45pm
Thread Starter 
Can anyone explain what'll happen with this circuit? I made the right wires go out of the pic so u assume it's identical.
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post #7 of 10
12/8/09 at 11:51pm
Quote:
Originally Posted by P4Z View Post

Will my source, headphones or CMOYs be damaged?
I reiterate.. Probably..

Feeding the output back into the input could fry the input devices on the amp.. as well as the source..(sauce)

It's unlikely you would damage the headphones, unless some kind of weird runaway feedback fried then...

So, what are you trying to accomplish?

By the way, signals will not go backwards through the amp.. its just not possible..
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post #8 of 10
12/9/09 at 12:56am
OK.. lets look at this a little more seriously..

The Left source has signal, that feeds into the left input of the amp,(nothing happens to the signal on the right output on the amp, it is blocked by the circuitry) is amplified and is output and fed to one side of the headphone. Since a balanced output drives in a push pull fashion on L+ and L- and there is no L- since it is plugged into the input of the amp you would only see the positive swing signal through the headphones, but you might not see it for long, since the L+ signal may fry the Right input of the amp, which would then be an open circuit and no signal would pass.. For the short time that signal is flowing into the right input of the amp, (before it fries) the signal would be amplified, output by the Right channel of the amp, and fed back into the left output of the source, frying it, and doing the same to the left input of the amp.

The same thing would happen to the other amp...

So, all in all, a rather joyless experiment, and the loss of lots of the magic smoke...

Obligatory warning:
*Do not Try this at home*
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post #9 of 10
12/9/09 at 1:03am
Thread Starter 
L- was just labelling. Thanks MrSlim.
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post #10 of 10
12/9/09 at 1:56am
P4Z, why don't you build the balanced CMoy instead?
I'm sure I've seen the schematics somewhere in head-fi, the mighty Google might be able to help
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