2ohm..4ohm..8ohm..Whats Better?

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Props Slaps
 11-11-2006, 10:03 AM         #1
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YungJaay 
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2ohm..4ohm..8ohm..Whats Better?
 

 
Im gonna buy 2 ROCKFORD FOSGATE P312 Series subs and dont know if to get them @ 2ohms or 4ohm..Whats the difference?Also these will be power from a ROCKFORD FOSGATE POWER T5002 amp.

6 comments for "2ohm..4ohm..8ohm..Whats Better?"

 11-11-2006, 10:12 AM         #2
GhosT  OP
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is the amp 1ohm 2 ohm or 4 ohm stable? i don't have time to check
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GhosT
 11 years ago '06        #3
-Phase One- 1 heat pts
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$5,511 | Props total: 258 258
There's not really a "better" one, it's all going to sound the same anyways, it just depends on what wiring configuration you're going to do, also depends on your amp specs, and if your subs are dual voice coil (DVC) or single voice coil (SVC). Which I'm pretty sure the P3 subs are all DVC.

So, if both P3 subs are 500wrms, you'd want to give them both 1000wrms or a little more to get the best performance. I wouldn't really under power them or really over power them. Anywhere from 800wrms - 1200wrms to both should be good.

Now, that amp isn't really powerful to power 2 P3 subs. Here's the specs I got off the website.

75 W x 2 @ 4 Ohms RMS
150 W x 2 @ 2 Ohms RMS
250 W x 2 @ 1 Ohms RMS
300 W x 1 @ 4 Ohms bridged RMS
500 W x 1 @ 2 Ohms bridged RMS

If you really want that amp, then your best bet is to get the 2ohm subs so you can wire them both to the amp bridged to get 500wrms. Both subs would be getting 250wrms, which is REALLY underpowering them.

Personally I would look for a bigger amp. IMO Fosgate amps are too over-priced and there are better out there for a lot less.
 11 years ago '06        #4
-Phase One- 1 heat pts
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$5,511 | Props total: 258 258
Another option, is to get 1 4ohm P3 and wire it to the amp bridged @ 2ohms, so the 1 P3 will get the 500wrms.
 11-11-2006, 01:24 PM         #5
YungJaay  OP
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"THE FEATURES FOR THIS AMP:14.4VDC ,FREQUENCY RESPONSE:20+20k Hz,+/-0.5dB,SIGNAL TO NOISE:>80 dBA,EFFICIENCY:64.077%,QUIET TURN-ON/TURN-OFF: TURN ON DELAY-1.5 SECONDS,THE RMS @ 4OHMS IS 230,THE TOTAL RMS @ 2 OHMS IS 743,THE TOTAL RMS @1 OHMS IS 1044"The guy i ordered it from gave me these stats GhosT...So this made me think the amp could push these two subs.
 11 years ago '06        #6
-Phase One- 1 heat pts
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$5,511 | Props total: 258 258
Well he lied to you or you posted the wrong amp model in your first post.

It's a 500 watt 2-channel amp. It will work, but those P3's will need a lot more power to get them sounding like they should.
 11-11-2006, 03:10 PM         #7
YungJaay  OP
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Dang..I havent paid for the amp yet so im gonna look into something else.
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