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Discussion Starter #1
Hi all,

I have a 1995 Caprice Classic with the AM/FM/Cassette head unit with the 10 disc changed in the trunk. I recently upgraded all four interior speakers with aftermarket ones (Alpine) and I notice that when I adjust the controls to any single speaker, there is plenty of bass. If I select either of the rear 6x9's, there's quite a bit of it, actually. But when I adjust either the balance or Fade control to power either both rears, both fronts, or the right/left channel, nearly all the bass is gone. Why might this be?
 

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It sounds like the speakers are out of phase. Fade to the rear, then if you have bass on either speaker but not both it's out of phase. reverse one of the speakers + and - wires. see if this helps.
 

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Discussion Starter #3
Bingo!

They are working like a champ now. Thank you!
 
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