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Convert stereo amp into mono amp?

Is it possible to convert a 10 watt stereo amp into a 20 watt mono amp
by feeding the output of the "right" channel into the input of the
"left" channel? Will the output of the "left" channel now support 20
watts?

THanks.
 
K

Kalman Rubinson

Jan 1, 1970
0
Is it possible to convert a 10 watt stereo amp into a 20 watt mono amp
by feeding the output of the "right" channel into the input of the
"left" channel?

No. It will overload the left input.
Will the output of the "left" channel now support 20
watts?

No. It can only output 10W no matter what you put in.

You are welcome. You might be able to get more out of the 10WPC amp
by bridging the two channels but that is not as simple as your idea.

Kal
 
J

John Fields

Jan 1, 1970
0
Is it possible to convert a 10 watt stereo amp into a 20 watt mono amp
by feeding the output of the "right" channel into the input of the
"left" channel? Will the output of the "left" channel now support 20
watts?
 
Kal,
Thanks for the reply. I forgot the input is "line-level".

I will investigate possibly bridging the two channels.

Thanks.
 
B

Ban

Jan 1, 1970
0
Kal,
Thanks for the reply. I forgot the input is "line-level".

I will investigate possibly bridging the two channels.

Thanks.

You might blow the amp with this idea. Your speaker must have double the
specified minimum impedance, so if the amp is for 4 ohm speakers, in bridged
mode it can deliver double the power only to 8 ohm speakers. If you connect
a 4 ohm speaker to it, it will get in current limit situation and the output
power will also not be bigger than with a single channel. If you overload
the amp this way, it might get hot and this will reduce MTBF (Mean Time
Before Failure).

You can get a stereo line transformer from radio shag. operate both inputs
in parallel and just inverse the second output. Then you do not need to
fiddle with an additional power supply and some electronic inverter, because
the output of the amp is usually in phase with the input and you cannot use
it to derive an inverted signal. The loudspeaker is then connected to the
two red terminals.
 
K

Kalman Rubinson

Jan 1, 1970
0
Fully agreed but that's what I meant when I wrote that it wasn't as
simple as what the OP first suggested.

Kal
 
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