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question about wiring subs

Old 01-02-2009, 12:21 AM
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question about wiring subs

I am running 2 JBL 10" subs.. They are dual voice coil and are 4ohm. I have them hooked up to an Alpine 3545 amp.. I have it running in 2 channel with each sub to one channel and only using one voice coil. They dont sound very loud so I am thinking of rewiring it. The specs on the amp are [email protected], [email protected] and [email protected] Should I wire the subs together and run the amp bridged at 4 ohms or should I go 2 channel and wire the subs to 2 ohms.. What configuration would be the loudest??

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Shane..
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Old 01-02-2009, 12:24 AM
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wire each sub at 2ohm and run each sub to each channel on amp and according to you and your amp it should see 350watts rms per sub/ channel
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Old 01-02-2009, 04:14 PM
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danyman just a quick question, will it make any difference at all if he series the coils and then paralel the subs and bridged the amp @ 4ohms? He would still be getting 350/sub and the amp would only be seeing 4ohms. Less stress on the amp? Cleaner sound? Less heat? Just wondering what the pros and cons are of both ways.
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Old 01-02-2009, 06:49 PM
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Originally Posted by 420guy View Post
danyman just a quick question, will it make any difference at all if he series the coils and then paralel the subs and bridged the amp @ 4ohms? He would still be getting 350/sub and the amp would only be seeing 4ohms. Less stress on the amp? Cleaner sound? Less heat? Just wondering what the pros and cons are of both ways.
Thanks
Nick
Electrically there is theoretically no difference....in reality, if there is a small difference between the channels in stereo running the amp bridged will cancel them out.

It will also change what happens if one of the drivers blows or shorts out....but that never happens right?

HTH
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Old 01-02-2009, 09:52 PM
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Originally Posted by 420guy View Post
danyman just a quick question, will it make any difference at all if he series the coils and then paralel the subs and bridged the amp @ 4ohms? He would still be getting 350/sub and the amp would only be seeing 4ohms. Less stress on the amp? Cleaner sound? Less heat? Just wondering what the pros and cons are of both ways.
Thanks
Nick
y run 4ohm at 250watt per sub when you can 350watt at 2ohm to each sub?? i rather have more power and using both coils than using just one like hes doing right now
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Old 01-02-2009, 10:04 PM
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Originally Posted by danyman View Post
y run 4ohm at 250watt per sub when you can 350watt at 2ohm to each sub?? i rather have more power and using both coils than using just one like hes doing right now
His amp does 700x 1 @ 4ohm so he would still get the 350/sub, no? I thought it was better to run an amp at 4ohms if it will output the same power. Less stress on the amp? I agree as well only using one coil is bad. I have actually read that it will do major damage to them??? I don't see any difference other than the work load on the amp running them at 2 or 4ohms though. I could be wrong though, but wouldn't it be better to run at 4ohms mono?
Thanks for the help to understand this a little better.
Nick
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Old 01-02-2009, 10:07 PM
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if the sub lets say is rated 350 and its a DVC. if you run 350 only to 1 coil it will do damage. its like running 700watts rms to that sub on the DVC. overpower this much can be very stressfull. i still like the 2 channel at 2ohm option better. 350watts rms to each sub properly. 175watts per coil instead of 350
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Old 01-03-2009, 10:29 AM
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Thanks very much guys.. This is what I was trying to figure out.. I will run them in stereo wired in parallel so the amp sees a 2ohm load..Thanks again.. Just so you know Danyman, im doin this in a 91 Caravan...

Shane..
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Old 01-03-2009, 07:54 PM
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lmao i had one. blew the tranny. :P system wasnt that great tho hehehe all XXX brand from global electronics and a type E 10 for sub. it sucked ***** lmao
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Old 01-04-2009, 02:14 AM
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Ninjaboy, this will be the best way to wire these up. Then hook up to the amp bridged mono at 4ohms. It will be easiest on your amp and still get the max power from it.
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