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In Reply to: RE: Riddle me this! posted by JimL on January 08, 2009 at 05:26:45
I've had at least 5 different amps and sources hooked up to these speakers. Different cabling. I've even tried them in 3 different rooms - and they still do it!
I've switched drivers inside the cabinets. And it's the same cabinet that plays softer.
IS there any chance that it could be the L-pads?
There's only two things I haven't changed. The 3.3 HF caps and the L-pads. And I don't know if I can even get at those. (We're talking about accessing the Xover by pulling the 10" woofer. And those pads are immediately inside and below the woofer opening. A most unfortunate placement.)
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jac - desperaudio
Follow Ups:
Sorry, I need some clarification.1) When you swapped cables, sources and amps the imbalance did not change, correct?
2) When you swapped the drivers between left and right speakers the imbalance still did not change, correct?
3) When you physically switched the right and left speakers the imbalance still did not change? If this is correct then there is a problem with the room. If the imbalance changed to the other side when you physically switched the right and left speakers then the problem is in the speaker, and if number 2 above is correct then it has to be in the wiring or crossover in the speakers since swapping drivers did not do anything.
Unless I'm missing something.
Edits: 01/08/09
1) When you swapped cables, sources and amps the imbalance did not change, correct?
Correct
2) When you swapped the drivers between left and right speakers the imbalance still did not change, correct?
Correct
3) When you physically switched the right and left speakers the imbalance still did not change?
The imbalance didn't change - it stayed with the speaker. If it was on the left (louder) and I moved that speaker to the right then the loudness was now on the right. So I'm pretty sure it's in the actual speaker and not a room effect. Same thing when I change rooms. That one speaker is just louder (or, depending on your perspective, one speaker plays more softly)
If this is correct then there is a problem with the room. If the imbalance changed to the other side when you physically switched the right and left speakers then the problem is in the speaker, and if number 2 above is correct then it has to be in the wiring or crossover in the speakers since swapping drivers did not do anything.
Unless I'm missing something.
Nope - you pretty much got it. I'm going to change the 3.3 caps out (if I have replacements - and I should - I have a couple of big boxes full of crossovers and parts).
If that doesn't help then I believe I'll try changing the adjustment pots or L-pads or whatever the hell they're called. I really hope I doonI'm gonna' get this. It's pissing me off - I really like those speakers and I'm going to get this right! Dammit!
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jac - desperaudio
Looks like you've got it narrowed down. Better than an experience I had where I thought I had it narrowed down to the speakers, sent it off for repair, they checked it and said everything was OK, sent it back and the imbalance was gone!
That, somehow, just isn't right. Leaves you feeling a bit bewildered, foolish and a little peed off that you couldn't make it better yourself.
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jac - desperaudio
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