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In Reply to: RE: DC Voltage and leaving amp on.....24/7 posted by walkstoslow on February 20, 2022 at 16:29:26:
Ah, much better. Units matter (V vs mV). P=(V^2)/R is why I was so alarmed when you said your were measuring 20V DC offset. I think your amp is rated at 50 watts/channel. 20V means (20^2)/8 = 50 watts, which implied somehow your amp had connected one of its power supply rails directly to your speakers, which should have at a minimum blown a fuse, or burned out your woofer voice coil and caused whatever other mayhem possible. Happy to hear that wasn't the case.
To your original questions, I doubt reducing the DC offset to ~1 mV made an audible difference, but maybe it did (reduced some subtle crossover notch effect in the output stage? I don't know.). Certainly it can't hurt. By the way, 20 mV won't hurt your woofers (it's only the equivalent of 50 microwatts into 8 ohms). And I still see no reason to leave the amp on 24x7 - at its age, unless it's been completely restored by someone who knows what they're doing, why chance it?
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Follow Ups
- RE: DC Voltage and leaving amp on.....24/7 - JonM 04:23:54 02/21/22 (1)
- RE: DC Voltage and leaving amp on.....24/7 - walkstoslow 07:21:09 02/21/22 (0)
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