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I did. When it's off it's silent as expected, when it's on that's when the whine starts.

Hey guys, I've been using a Denon AVR-1803 for my home theater for the last nine years. Today I thought it would be fun to wire a pair of speakers into the bathroom for listening to podcasts, etc....

Come on, give the kid a break. Nobody gets into this stuff with a full bank of knowledge...

The 8 inch Polk's might give you a sound that you find more enjoyable. They'll sound more musical and...

Vital -

Thanks for your input it was actually your mention of your sub speaker wire that led to the fix. It was pretty random but without your quick mention I don't know if I would have figured...

Not to sound rude, but if I had the money to pay someone an undetermined amount of cash just to diagnose it I already would have. I'm asking for help because I've spent all this money on four mm...

Well... moved the crossovers this past weekend, no change. So I set out to get an amp from a friend. I ended up borrowing an Alpine PDX-4.100. Which by the way, as far as the wiring process goes...

Hadn't even considered that. I'll try it today. Hope that's it! This is driving me crazy. And I don't have another amp to test.

If the amp was bad wouldn't it still be whining when there was nothing plugged into the amps inputs?

Thanks for the tips but regrounding didn't work and the cables are in fact shielded... plus, as I said when I plugged my ipod directly into the amp I was still getting the whine. So it couldn't be...

Hey guys, I installed a pair of mm651's in my rear doors a couple weeks ago and everything was working great. All of a sudden I'm getting some nasty alternator whine.

I re-grounded the amp in a...

All right, so I changed the crossover a while back so they would be running full and it did help a bit. They still sounded empty and I spent a couple weeks obsessed with finding another solution. I...

Gentlemen, I was wondering if there are any of you with some MDF lying around who would be willing to cut me adapters to properly mount my mm6501's in my 6x8 openings. I don't really know what price...

Really? I was under the impression that having them run that low would increase distortion. I do have a Boston Acoustics G312 handling 60 and below... Hmmm... I'll have to give that a go. Hope...

and i mean no MDF 6x8's to 6.5...

Haha sorry guys. One more time... There are no 6x8 to 6.5 adapters on ebay. There are lots of others but not 6x8 to 6.5. And I mean midbass just the way you described it, but I'm saying a lot...

Kaos, I truly appreciate any help offered even if it doesn't necessarily solve the problem just yet. I do have plastic adapters installed already though. It's the elusive MDF ones I'm seeking...

Yup. Checked, double checked, and triple checked. One more possibility... could it be the effect of poor grounding? The amp powering my sub is connected to the same point via a distribution block...

I absolutely agree. I may not have been completely clear. I'm not looking for bass that could almost compare to an 8" sub, I'm just hoping for smooth sound. Everything from a kick drum, to a...

After playing with the balance I can say they're not out of phase with each other, but I plan to check all the wiring this morning.

I need a 6x8 to 6.5, of which there are none. :/

Unfortunately, I've looked. The only thing I can find on ebay looks to be 6x8 to 5.25. I'd feel a whole lot better with sealed MDF adapters but have scoured Amazon, eBay and every site I could...

Yikes. That's what I was hoping for when I put mine in. And they do go low but it rolls off bad. I'm gonna test for phase tonight and might pull the door off again tomorrow. I don't understand why...

I think the problem is individually and together but I'll have to check for phase cancellation later tonight. Thanks for your help so far I've been really disappointed up to this point. I've been a...

Also, I dynamatted the metal behind the speakers hoping that would help with the backwave

Interesting... It's definitely sealed around the opening, no open holes. I haven't dynamatted the opening but it doesn't seem like just that would be enough to fill in the frequencies that are...