Dual Voice Coil Subwoofer

Dual Voice Coil Subwoofer

Postby coult45 [OP] » February 2nd 2015, 5:55am

figured i'd post here as i'm already a member and have had great luck with all the knowledge floating around here.

I was recently gifted a full stereo setup, minus all the wiring. So thats on the way..

But, I have a 10" DVC 4 ohm subwoofer. After testing the resistance, one voice coil shows 0 ohms, the other seems to be okay at 3.6 ohms.

Can I just wire up the one coil? I've read a bit about how you can wire only one of 2 coils in a DVC setup, but never read about wiring this when one is reading 0 ohms. I'm still not even sure what is means that the one is reading 0, and the other is good.

I figured i might as well give it a try, i assume it wont sound as good as it should, but this was all free to me and any bass is better than none.

Any input?
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Re: Dual Voice Coil Subwoofer

Postby The Drummer » February 2nd 2015, 8:44am

I v ran dvc s only hooked to one side for years ,still do , dont see why you could not , i v never blew a speaker , at least not that way :) , but hooking em is easy tho , to stay at 4 ohms just hook +to+ and - to- on the speaker ,then hook to amp , google how to wire dvc s ,youl get all the info you need .
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Re: Dual Voice Coil Subwoofer

Postby coult45 [OP] » February 2nd 2015, 3:53pm

Ive read about how to wire it, all the options with ohms and parallel and series. just didn't know if it was possible to run one coil, with the other saying it has 0 ohms
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Re: Dual Voice Coil Subwoofer

Postby Mmusicman » February 2nd 2015, 10:24pm

[Oops! Post deleted]
Last edited by Mmusicman on February 3rd 2015, 1:27pm, edited 2 times in total.
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Re: Dual Voice Coil Subwoofer

Postby coult45 [OP] » February 3rd 2015, 5:47am

Mmusicman wrote:Using only 1 voice coil is WASTING speaker efficiency!

Use BOTH coils! Wire them in series or parallel... which ever suites your amplifier's load setup. Running coils in series, then bridging the amp is usually a great solution. Parallel is usually more suited to 2 channel (stereo) operation.

Lower impedance will cause amp to produce more wattage.. as long as you are within specs.



PLEASE READ THE THREAD.....

I know about the wiring options, for me, series wiring and bridging would work best if both of my coils tested fine.

BUT ONE COIL EITHER TESTS 0 OHMS or a number like 80 OHMS. I think this means it is fried, but im not really sure what it means. The other coil shows fine, at 3.6-4.0 OHMS.

Im wondering if this will hurt my other components, if i should continue to wire it in series, or just wire the one coil so my output would be 4 ohms
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Re: Dual Voice Coil Subwoofer

Postby Mmusicman » February 3rd 2015, 1:22pm

Sorry... I see no reason why you can't just run one coil then. It should be fine.
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Re: Dual Voice Coil Subwoofer

Postby Lumpy » February 3rd 2015, 3:59pm

coult45 wrote:
... ONE COIL EITHER TESTS 0 OHMS or a number like 80 OHMS. I think this means it is fried, but im not really sure what it means. The other coil shows fine, at 3.6-4.0 OHMS.



What it "means" is that your speaker needs replacing.

If the bad coil is reading either zero or 80 there's something wrong with your testing procedure or your instruments. It's either one or the other, 0 or 80. Can't be both.


coult45 wrote:
Im wondering if this will hurt my other components, if i should continue to wire it in series, or just wire the one coil so my output would be 4 ohms



Your OUTPUT doesn't change from or to 4 ohms from or to anything else.


coult45 wrote:Ive read about how to wire it, all the options with ohms and parallel and series



There's only two options. I'm not sure what "all the options" are that you've read about.

Replace your speaker. Wire it the same way your other speaker is wired. If you need to hook up the bad speaker in the mean time, leave the bad coil out of the circuit.


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