Question about Polk Audio MMC5250 Car Component System

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Broken crossover Hey, I have a momo 5250 cross, It has no cover so I could mount it behind the glovebox. long story short, cross comes loose, tears up the dual/single switch.... Anyone know a fix or a source for just the cross...? The speakers are fine so I hate to replace everything. Thanks! Thornton

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They're usually just a standard DPDT slide switch. Try Radioshack.

Posted on Sep 22, 2007


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Posted on Jan 02, 2017


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Where are the a/c blower control valves?

It's a small electrical box mounted on the black duct work behind the glovebox. Has 2 screws holding it on there. It's about 3 inches long and 2 inches wide. The black plastic cover you look at when you first look at it had to come off and then you can get to it. Should be 2 7mm bolts.

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I have a Panasonic EAA046B amp connected to a Polk Momo speaker system installed on my 2006 Sea Ray boat that was factory installed. Last week when we turned on the stereo all we got was short basey thuds...

Hello, if you know how to use a volt/ohm meter and you are comfortable with taking the bottom cover off the amp I can assist you in testing a few things to narrow down the problem. The easiest way would be to talk to you on the phone if you don't mind. I own a car audio installation and amp repair shop. If you want to do it by e-mail we can do that to. I would have to walk you thru the steps, it would'nt take long. Taking the amp out and taking the cover off takes longer. Anyway let me know. It sounds like you may have a power supply problem. Or, it could be a few other components inside. It's hard to say without doing the test that I would help you with first. Cause the amp is coming on but you say with some thumps coming from sub and nothing from the other speakers. It maybe doing the same on the other speakers but because there are crossovers on them it would cut off that low frequecy noise. You could also maybe have some shorted output transistors but like I said, have to do thaqt initial test first if your up to it. Send me a private message so I can get your info or i'll give you mine to decide what you want to do.

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it does sound like you shorted out your crossover which can be fixed if you know what you are doing, but in the long run i would try to get another one i know that raidoshack sells some small ones and is also cheap, if your positive that you didnt short out the crossover se if it needs power, see if you can cross your woffers and tweeters on the crossover, if not is there any settings that u can change on the crossover? hope i helped :)

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