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Car speaker?

Car speaker shorting thru door frame?

  • I installed new speakers all around (Infinity Kappas, 6.5s for the front and 5x7 in the rear) and a 100watt per channel 4 channel amp in my 1990 lincoln. Everything went fine except the passenger door speaker was wigging out and making high pitched tones and popping sounds CONSTANTLY, immediately after install. Once i got the amp installed too, it was even worse, nearly deafening, and absolutely painful. Eventually i found out the problem was the speaker is somehow shorting out on the door frame... My first attempt to fix it was by wrapping the parts of the speaker mount that contacted with the door in electrical tape so it couldnt short out. Well that didnt work, since the screws are metal, as is the little nub on the mount that goes into a hole on the door to keep the mount secured. I cant swap speakers to see if it would happen with the other front speaker so im at a loss. ive NEVER heard of this issue before so i have no idea what to do. Is there some other way i could isolate the speaker? or some known way to remedy this? it seems there is some kind of faulty wiring within the speaker itself, at least best i can tell. I bought the speaker probably 7 months ago so i dont think returning it is an option. If need be i can probably tear it open and fix it but id rather not if it can be helped.

  • Answer:

    check the wiring terminals on the speaker. it may be grounding the speaker wiring from the amplifier to the frame.

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The easy test would be to dismount and unplug the speaker, then use a multimeter's continuity setting to see if there's continuity between the speaker terminal and speaker basket. If you find continuity, then the speaker is defective. If there's no continuity, I'd look for a short somewhere along the speaker wire. I will note, I have run into this exact defect before with the Kappa speakers, so I'm guessing that that's where your problem is. Edit: there's a point near the inner basket edge where the wiring running through the magnet joins up with the pigtail cable that runs to the crossover/terminal box. That's the likely location of the short. I've installed dozens of these professionally, and run into three or four that had this problem. I'm pretty sure I was able to repair one, but it was a few years ago so I don't recall exactly. http://www.sonicelectronix.com/pictures_new.php?id=13965&picture_id=873297

KaeZoo

try swapping around your rca cables and see if the speaker acts different or the noise your hearing gos to another speaker.if so it could be your rca cables.no amplifier type without it my guess its not a name brand amp and could be your problem.and you have to make sure you have the proper speaker wires power and ground on the right contact of each speaker.it is a no no to ground any speaker to the steel of your ride if its hooked to an external amplifier,this alone could have cooked that channel of your amplifier.

Charlie

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