Is this a good amp?
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New member Username: Witchywoman3817Post Number: 8 Registered: Dec-06 | First off, thanks for all the great advice on my last post. Now, as I said before, I have 2 12" Infinity Reference 1242w 4 ohm dvc subs. They need 60-300 wrms (150w per voice coil) apiece. Crutchfield suggested the Rockford Fosgate Punch P5002 2 channel. Rated 125 wrms x 2 @ 4 ohms, 250 wrms x 2 @ 2 ohms, actual around 160 wrms x 2 @ 4 and 320 wrms x 2 @ 2 ohms. I have a 93 Geo Storm (hatchback) but hope to get another car soon and put subs in trunk. In your opinion, is this a good amp to use and a good amp in general? I read in another post that it wasn't and some reviews say it gets hot, but I know, overall, Fosgate is a great brand. If I do get it, how should I wire it up? Thanks for your help in advance. |
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Gold Member Username: Dustin3Tigard, OR U.S. Post Number: 4572 Registered: Oct-05 | you would hook a sub to each channel of the amplifier, and then run the subs @ 2 ohms each. RF makes fantastic amplifiers, and they always perform wire each sub like this:  |
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Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 3740 Registered: Dec-05 | bassman, he has two dual 4 ohm subs. If he does that then he will burn the amp because of the load. You need 600w rms at 4 ohms or 1 ohm. If your budget is low then grab audiobahn a8002T and bridge it |
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New member Username: Witchywoman3817Post Number: 9 Registered: Dec-06 | Thanks to you two! |
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Gold Member Username: N2audioLawrence, Ks USA Post Number: 1066 Registered: Mar-04 | No Julio, Bassman's suggestion is one sub per channel at 2 ohms stereo. Should work fine. However, I would suggest bridging the amp and going this route...  power will be the same. The only difference is it's mono which takes any stereo seperation between the subs out of the equation. Slightly preferable over 2 ohms stereo, but either way should work fine. Concerning the RF amp. It's a solid amp, and should be plenty powerful to do a good job. The only consideration IMO is efficiency. If your vehicle's alternator is good and strong it's probably not worth making a change. But if you want to make life easier on your electrical system you might want to consider a class D amp. Something around 600w at 1 ohm. |
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Gold Member Username: JuliobSanto DomingoDominican Re... Post Number: 3754 Registered: Dec-05 | sorry... my bad.. i thought it was a mono amp |
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New member Username: Witchywoman3817Post Number: 10 Registered: Dec-06 | Thank you so much! |
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Bronze Member Username: Witchywoman3817Post Number: 11 Registered: Dec-06 | Thank you so much! I actually already have the amp now so can't use a different one. Going to check my alt and see if I need a cap. Anyone know where to get the best deal on the wires? |
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Gold Member Username: CtmikeCt. Post Number: 2787 Registered: Feb-06 | check your alt to see if you need a cap? no you don't need one. for wires, http://www.knukonceptz.com/ |
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Gold Member Username: N2audioLawrence, Ks USA Post Number: 1085 Registered: Mar-04 | a cap is a want/don't want issue, not </i>need/don't need<i>. Never a necessity IMO.<br> <br> If you have a teeny tiny alternator (it would have to be teeny tiny for 500-600w to be a problem) a cap won't help anyway. |
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Gold Member Username: N2audioLawrence, Ks USA Post Number: 1086 Registered: Mar-04 | Wow, nice formatting -- I think I'll try again. a cap is a want/don't want issue, not need/don't need. Never a necessity IMO. If you have a teeny tiny alternator (it would have to be teeny tiny for 500-600w to be a problem) a cap won't help anyway. |
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Bronze Member Username: Witchywoman3817Post Number: 12 Registered: Dec-06 | Thank you so much for all the help. The cap was really the last thing I was worried about but if I don't need one...... that much quicker that I have this all hooked up. Nothing left but the wires and to actually build the box. |
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