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that's weird... the left channel is +6dB & out of phase

Posted by thump (A) on January 18, 2017 at 02:14:36

In Reply to: RE: other points... posted by thump on January 18, 2017 at 01:45:45:

in looking up how to measure watts, i got the multimeter version of V x A = W, so i decided to give it a go and right away got a very weird result. measuring the speaker out allen screws, i get -.09v (polarity correct) on the left channel and +.03v to +.04v on the right @20v meter setting. as i suspected, the left channel IS lower in volume, but the right channel is wired out of phase too.

i got -.22a on the left and +.09a on the right at the 10 amp setting on the meter.

BTW, if i'm doing the math right, that = -3.98w on the left channel and +.72w on the left channel, right?

if the front mains left channel is wired out of phase, then maybe the rear channel's left is too so that would mean i MIGHT have been bridging the sub L positive to R positive. instead of L- to R+. now i wonder if MAYBE the buzzing was related to the sub bottoming out. THAT would cause a buzz i bet.

i reversed the inputs in case it had anything to do with the media player or the cables and got the same readings.

Edits: 01/18/17 01/18/17

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