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Car Forum / Driving, Maintenance, Tuning / Car Audio / July 2006

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6.5" Coaxial Repair

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Dinsdale - 13 Jul 2006 19:31 GMT
Has anyone had any success repairing a 6.5" coaxial speaker?

I have pair of Polk 6.5" coaxial speakers - the woofer is out on one side. I
can still hear the tweeter, though.

I can't see anything wrong with the speaker itself.  The pair are in
remarkable condition, and the cone and surround are perfect.

I can't see any broken leads anywhere, either.  Does the plastic rim of the
tweeter come off, and does it reveal anything I might be able to fix?

Or is the voice coil gone on the woofer itself?

Are these things worth trying to fix?  I hate to just dump them.

Thanks!
Matt Ion - 13 Jul 2006 23:17 GMT
> Or is the voice coil gone on the woofer itself?

If you have a multimeter, you can check the resistance of the voice
coil... if it reads open or shorted (or just about anything outside the
range of 2 to 10 ohms, after allowing it a few second for the meter
voltage to charge the tweeter's crossover cap), then it's probably the
voice coil, although there is a chance it's just one of the little Litz
wires that runs from the terminal to the cone.

If you can hear a scratching sound when manually moving the cone up and
down, the voice coil and/or suspension are definitely fried.

> Are these things worth trying to fix?  

If it's just a loose/broken Litz, a solder touch-up at the right spot
may do the trick... if the coil is toast, forget it; the only way to fix
a blown voice coil is with a recone, and you don't find recone kits for
many coaxial car speakers.

> I hate to just dump them.

You could always rip the tweeters out and use them for spares...
Dinsdale - 16 Jul 2006 16:33 GMT
Thanks, Matt.

I checked the continuity on every pair of leads I can see or access, and no
shorts were found.

I'm at a loss here.

Anyone want a pair of USED 6.5" speakers?

Dinsdale

>> Or is the voice coil gone on the woofer itself?
>
[quoted text clipped - 18 lines]
>
> You could always rip the tweeters out and use them for spares...
bob wald - 16 Jul 2006 19:58 GMT
matt do you have chickens??? because i'm hearing ''cheap'' ''cheap''
''cheap'' ''cheap''..lol
hey i had my oil changed the other day.. i was thinking if i ran hot
water though the filter could i use it again??????
i cant believe i've been thoughing away these things! geez
Dinsdale - 17 Jul 2006 16:05 GMT
I just did, trust me.

> matt do you have chickens??? because i'm hearing ''cheap'' ''cheap''
> ''cheap'' ''cheap''..lol
> hey i had my oil changed the other day.. i was thinking if i ran hot
> water though the filter could i use it again??????
> i cant believe i've been thoughing away these things! geez
Matt Ion - 21 Jul 2006 23:03 GMT
> matt do you have chickens??? because i'm hearing ''cheap'' ''cheap''
> ''cheap'' ''cheap''..lol
> hey i had my oil changed the other day.. i was thinking if i ran hot
> water though the filter could i use it again??????
> i cant believe i've been thoughing away these things! geez

This from the fool who thinks JVC is high-end gear...
bob wald - 22 Jul 2006 01:16 GMT
jvc is better than i thought thou.. not high end.where did i say that.
infinity/alpine is thou.
 
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