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Old 12th October 2010, 01:21 PM   #1
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Default Simple dual chip question

I have built a simple non-audiophile 2 channel amp. using the OPA2544. I used 3 leg output speaker connectors so when one side is not in use, it is connected to a dummy load. But what would be the best for the inputs when one side is not in use - left idling? Grounded? Recieve a little of the signal?

Thanks so much. I read every post. But sometimes I am puzzled by things I thought I had known for years - just getting old I guess.
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Old 12th October 2010, 01:41 PM   #2
AndrewT is offline AndrewT  Scotland
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Solid State amplifiers are different from Valve amplifiers in that an open circuit load does not damage a properly designed SS amplifier.

If you want to ensure the idling amplifier has least work to do, then inserting a shorting plug or better still a resistive plug that mimics the source impedance presented by your source, into the empty input socket will do no harm.
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Old 14th October 2010, 08:10 AM   #3
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Default Thanks Andrew

Your suggestion working perfect. Case closed.
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