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  1. #1

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    Default Possible blown crossover?...

    I have a set of component Polk Momo speakers in my Miata and Ive been having problems with one of my crossovers. A few months ago one of my tweeters kept cutting in and out, a little jiggling at the HU and she'd come back on. A month ago however I cant get the tweeter to turn back on regardless of how much moving around of wires I do, I replaced the AUX that was attached to my iphone. And I moved around all the speaker components to try and locate the problem. I believe its the crossover and not the tweeter itself, I swapped tweeters between the two doors and crossovers and both the tweeters work fine, but every time their hooked up to the one crossover one of them fail to work. Only the woofer actually produces any noise from the messed up crossover. Ive noticed pressing down on the tweeter terminals causes the tweeter to produce some very faint noise. Is there something I should be looking for? Ive checked and double checked all the connections. And if the crossover is indeed fried, is there some way to JUST replace it alone and not the entire expensive set?

    Thanks a lot guys, any help would be greatly appreciated. Keep in mind however I know very little about this stuff.

  2. #2

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    I think you can call Polk CS and get that crossover replaced. It's worth a shot at least.
    Truck system so far...

    2007 Dodge Ram 1500 quad cab Hemi

    Kenwood KDC-X492 HU
    MM651 coaxials in doors

    Family Room:

    Panasonic TC-P50G25 50" Plasma
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    XBOX 360 250GB
    Harman/Kardon HK3480(on loan)
    Monitor 70 Series II

  3. #3

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    If you do call CS, let them know youre a forum member. Even though you're new, they might give you the discount. It should run about $32 to replace. I know because I lost the xovers to mine and have been contemplating replacing them.

    You can take the cover off the xover and see if anything blew. IIRC there is a switch that lets the xover know when you are biamping or just running a single channel to the speakers. Check that and make sure it is set properly.

  4. #4

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    Thanks a lot for the info guys!

    Ive looked at the crossovers many times and I cant see anything that looks burnt or fried at all... And all the settings are proper. Does it sound like the crossover is the problem to you guys? I know my HU isn't the greatest, its my brothers old unit. I have taken the HU out though and had a look at all the connections to make sure they were good though. Ill give CS a call soon and see what they say about replacing the crossover. Ill let you guys know what the outcome is. :D

  5. #5

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    If you want to double check you can take the speakers and crossover out and hook it up to another connection. Either the other side of the car or a home receiver just to test if it is the crossover. Are they biamped right now or is there just one line getting split to each speaker?

  6. #6

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    Don't mean to thread jack but i got some similar, figured i ask here
    momo6500
    Left tweeter produces noise when h/u is on but not actually playing anything. Let's say i set it to Ipod or usb but both are disconnected.
    Noise increases as i turn the volume up and is pretty damn noticable even at volume half way up. You can't really hear much of the noise when music is playing but i know it's there and it's pissing me off.

    Could it be x-over??? Or does it sound more like speaker wires are too close to power wire?

  7. #7

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    Quote Originally Posted by Vital View Post
    Don't mean to thread jack but i got some similar, figured i ask here
    momo6500
    Left tweeter produces noise when h/u is on but not actually playing anything. Let's say i set it to Ipod or usb but both are disconnected.
    Noise increases as i turn the volume up and is pretty damn noticable even at volume half way up. You can't really hear much of the noise when music is playing but i know it's there and it's pissing me off.

    Could it be x-over??? Or does it sound more like speaker wires are too close to power wire?
    Do you have an amp or just the radio? Describe the noise. Is it crackling or is it a whine.

  8. #8

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    Quote Originally Posted by Installer4life View Post
    Do you have an amp or just the radio? Describe the noise. Is it crackling or is it a whine.
    Running of bridged PA200.4

    Kinda hard to describe the noise but it's more like noise coming from tv when u wake up at 4am and channel u were watching before you passed out is not running any programs anymore LOL. Basically just constant static type noise.

  9. #9

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    Swap the inputs to the amp. If the noise switches sides then it either the cables or the headunit. If not then switch the speaker output wires at the amp. If it switches sides this time then its probably the amp. If it doesn't then its either the tweeter, crossover or wiring.

  10. #10

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    Does it do it when the car is on/off or both?

  11. #11

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    After some wire switching back and forth as per Installer4life i realized that BOTH sides make that static noise. For some reason i was sure it was just the left one but it's def both.

    Which still keeps the same conponents as to blame - comps, wiring, h/u...

    Any advice on that??

    Dskip - h/u doesn't turn on when car is completly off, only when it's in ACC mode. Noise is there don't matter if engine is on or off.

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