An external mono switch

Paul Ebert · 9th February 2009, 12:18 PM

Here's a (possibly embarrassingly) simple question. How do I build a mono switch?

I'm designing some speakers and I'm tweaking the crossover on the one of the pair that I have gotten to the point of being able to do so. So I'd like to feed it a mono signal, but my Pearl has no such feature.

Can someone provide me a circuit I can put in a little box to go between the preamp and the amp for this purpose?

By the way, the Pearl is absolutely fantastic.

Nelson Pass · 9th February 2009, 11:18 PM

Take two resistors, each of which is about the rated load impedance
of the source, usually 10Kohm. Twist them in series and connect each
end to the two channels. The center twisted connection is your mono.

Paul Ebert · 10th February 2009, 01:45 AM

Thanks, Nelson. I really appreciate it. Time for an RS run!

9th February 2009, 12:18 PM	#1
Paul Ebert diyAudio Member Join Date: Mar 2003 Location: Central NY	An external mono switch Here's a (possibly embarrassingly) simple question. How do I build a mono switch? I'm designing some speakers and I'm tweaking the crossover on the one of the pair that I have gotten to the point of being able to do so. So I'd like to feed it a mono signal, but my Pearl has no such feature. Can someone provide me a circuit I can put in a little box to go between the preamp and the amp for this purpose? By the way, the Pearl is absolutely fantastic.

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9th February 2009, 11:18 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	Take two resistors, each of which is about the rated load impedance of the source, usually 10Kohm. Twist them in series and connect each end to the two channels. The center twisted connection is your mono.

10th February 2009, 01:45 AM	#3
Paul Ebert diyAudio Member Join Date: Mar 2003 Location: Central NY	Thanks, Nelson. I really appreciate it. Time for an RS run!

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