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Wiring how should i wire my rockford fosgate p3sd12 400 rms two ohm i have an alpine v-power amp 400 rms 2 ohm in a single cab gmc there are two seperate wire terminals on the sub and i only have one connected it sounds good but i cant turn it up yet because the shallow subs have a 24 to 48 hour break in so i dont really know if im getting the most out of the sub

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Re: wiring

The two seperate wire terminals on the sub are for dual voice coils which means. If You hook up the first terminal to the second terminal then run speaker wire from the second terminal to the amp.It should then increase the subs frequency response and sound better which also means it will be able to handle more bass. As to just having one voice coil hooked up. The two terminals is pretty much the bridge for the sub.

Posted on Dec 21, 2007

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Hi i have a few questions. I have bought a dual 12 " sub box and i need 2 subs and one amp to go with it. I want intence base that will impress! I am currently looking at 2 Alpine SWR-12D4 they are...

It's been my experience,that intense and low bass comes with a price,always remember u get what u pay for,so on that note,Try to get Rockford Fosgate Competition subs with a punch 250 or 500 trust me that it is a powerful combination.and if u can afford it get a choke to put on ur subs so they will only kick bass put tweeters in the dash and mid range speakers in the door u could use a dual rca jacks to install 2 amps at once and get a punch 45 amp for the tweeters and mids.hope this was helpful

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What kind of amp can adequately power P112 S8 subs

you shouldnt run it at 8 ohm it shows what ohms it can handle . to run it at 1 ohm you would need 2 subs to do this. and no i wouldnt run an 8 ohm sub on the amp.

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How should i wire up a dual voice coil 12" sub? should one wire from the amp go on the positive of one voice coil and one on the negative of the other...? and then jump a wire from the other two empty...

That would be wiring it in a series. It would double your resistance (ohms) and lower the power (wattage) thats going to your sub. If your amps rms rating is the same as the subs rms rating then I would suggest that since it will protect your sub from blowing more than running a single wire through both positives and another one through both negatives. If your amps rms rating is less then I would suggest the other way. It will lower the resistance which will allow more power. All depends on the amp. hope this helps

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if you get the 4ohm you can wire it to run a 2ohm an the kenwood amp will push 900 watts at 2ohms.they say it can push up to 1800 watts,that would be at 1ohm.that kenwood runs 500 at 4ohms an 900 at 2ohm.if you need help wiring the sub or anything else let me know bertman285@hotmail,com Max Power Output 1800W Power Output 4 Ohm [14.4V] 500W x 1 [20-200Hz, 0.5%THD] 2 Ohm [14.4V] 900W x 1 [100Hz, 1.1%THD] Bridged[4 Ohm] -

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When my bass hits, my car lights flicker.

Is the problem much more noticeable when the car is at idle? Double check that Alternator output. 70 amps is not high output, and if the problem is especially noticeable at idle, it's probably due to the alternator putting out lower voltage( a common thing with alternators). Also, with that much draw from your sub amp, the wire from battery to alternator should be beefed up, as well as the ground wire from battery. You can make up your own cables by purchasing the wire to length and wire lugs at a local Welding shop, 4 gauge from alternator to battery is good. High output aftermarket Alternators shoot into the 200 amp range.

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Same exact problem

Hello phatjay_31,

It's likely that the sub has been damaged by too much power. The Type R's in both 10" and 12" versions can only handle up to 500 watts RMS. The 15" version can handle up to 750 watts. The Rockford-Fosgate T3000bd1 amp puts out 3000 watts RMS into a 1 ohm load.

I'd check the voice coils. They are probably melted.

Hope this helps.

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Wiring diagram

Are your Speakers dual or single voice coil? The best way to find a wiring diagram is look at the rockford fosgate web site. I ll give you a tip to keep in mind. when wiring the ohms of a sub when you wire it in parallel positive to positive and negative to negative on one speaker you have left it in 2 or 4 ohm configuration depending on speakers. When in a series the ohm load will change by wiring positive and negative together will give you a lower ohm the more speakers you add to the amp. Fosgate will let you see how its done

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if your sub will handle it, bridging it will give you more power. The best thing to do is to find out how much power the amp puts out ( RMS ) and if it is in your power handling range bridge it. It sounds better and gives you a harder punch because of more power.

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Ohm load???

You can't wire a pair of single voice coil 2ohm subs to achieve a 2 ohm mono load. Too bad you don't have 2 four ohm SVC's. Sorry

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