Running a stereo amp as mono?

[tin0gauge]

In a little conversion I am doing I am using a cheap Chinese 10 + 10 w stereo amp and a stereo blue tooth receiver I only can use one speaker so I assume I can combine the blue tooth stereo output into one channel and connect that to the stereo amp. With regard to the amp outputs can I combine them, or just run the input to one amp and put a resistive load on the output of the unused one?

Thanks in anticipation.

[paulsherwin]

Just use one of the amp's channels and ignore the other one. Don't feed it any input. You shouldn't need to connect anything to the output though a resistor will do no harm.

You can only combine the amp outputs if the amp is specifically designed to do that.

[Michael Maurice]

Use two 1K resistors in series with each output from the Bluetooth receiver to combine the output.

As Paul said do NOT connect the two outputs of the amplifier together.

[rontech]

I think QUAD used to publish a circuit for combining the two channels of their QUAD 303 power amp to make a high output mono block amp.

[julie_m]

You could build an inverting amplifier to feed one channel of the stereo amp with an inverted version of the input signal, and connect the speaker between the two outputs; but it's much less bother simply to leave the unused channel unconnected.

You won't even need a load on the unused channel, unless it has a transformer-coupled output.

[tin0gauge]

Thank you gentlemen nice easy and plausible solutions will get right on it. Bryan