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In Reply to: RE: update on web search posted by Steve O on July 09, 2017 at 16:39:07
But wouldn't the output required for headphones be different than that required for speakers? Would the amp still drive my speakers properly?
I'm suggesting you parallel a 25-50 ohm resistor across the output of each of your amps. When the speaker is connected to the amp it sees ~ 6-7 ohms assuming 8 ohm speakers. When you disconnect the speaker the amp will see 25-50 ohms depending on the resistor value you choose to use. Most amps should tolerate both 6-7 ohms and 25-50 ohms across 8 ohm taps with signal applied w/o issue.
I was using an 8 ohm resistor in parallel, but a quick on a calculator program shows that 25 ohms would give a more even effective resistance when the amp is in use. I had meant to do this earlier as another poster had mentioned this as well, but I forgot to do it. Thanks for the reminder, I will give it a try.
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