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ohms?

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Old Feb 24, 2007 | 05:02 PM
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I was wondering what to set my ohms to on my rockford fosgate amplifier. I have 2 12' Lanzars, dualvoice coil,1000 watts peak, and the nominal impedance for one sub is dual 4 ohms and i have to of them. What should number ohms should i set my amplifier to?
 
Old Feb 24, 2007 | 05:50 PM
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Default RE: ohms?

2 dual 4 ohm subs can be wired to 1ohm or 4 ohms. If you take a look http://www.rockfordfosgate.com/rftech/woofer_wizard.asp you can see a diagram. Check to see if your amp is 1 ohm stable first. If it's not then you will have to run it at 4.
 
Old Feb 24, 2007 | 06:18 PM
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I have my subs wired up to 2 ohms and I have them bridged to my 975watt peak amplifier with thermal and protect. Is this good and will my protect help prevent me from blowing my subs??
 
Old Feb 24, 2007 | 06:43 PM
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Default RE: ohms?

If anything is going to blow it will be the amp. Whats the model number of the amp?
 
Old Feb 24, 2007 | 06:51 PM
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Rockford fosgate P325.2- So if my subs are going to blow my protect will turn on?
 
Old Feb 24, 2007 | 06:55 PM
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Default RE: ohms?

Well your amp is only stable at 4 ohms. So you need to wire your subs differently if you want to run the amp bridged. Wire the subs each is series to 8 ohms, thenn brdige them on the amp. Or wire the subs how you have it now at 2 ohms, and then wire each sub to 1 chan on the amp.
 
Old Feb 24, 2007 | 07:09 PM
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What exactly will this do again? and will this make them not as loud, and by how much?
 
Old Feb 24, 2007 | 07:30 PM
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Default RE: ohms?

This will allow for it to work. They way you have it won't work probably. The amp will either go into protect, or it may not and will blow.
 
Old Feb 24, 2007 | 07:45 PM
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Well I have thermal too, so wont that prevent my amp from blowing because itll will shut it off if it over heats it says. It doesnt mention any wiring, and i dont have to worry about my subs blowing u sed? and y?
 
Old Feb 24, 2007 | 10:14 PM
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Default RE: ohms?

if your amp isnt built to run at 2 ohms, dont. thermal kicks in when the amp gets to a certain temp, thus saving your amp, not your subs.

you have to run each channel at 4 ohms....or bridge the 2 channels to 4 ohms...
 



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