Amp + Sub Help

king3091 · Post by **king3091** » Tue Oct 02, 2007 2:57 pm

I need help choosing the right amp(s) for a 3 sub system. The subs being used are http://sonicelectronix.com/item_4281_Al ... PE+R-.html

smoker · Post by **smoker** » Tue Oct 02, 2007 4:56 pm

why 3?

king3091 · Post by **king3091** » Tue Oct 02, 2007 5:51 pm

cause thats what is goin be in my trunk

cargodz · Post by **cargodz** » Wed Oct 03, 2007 4:12 am

So do you prefer the overall look of 3 or is there any other reasoning for 3 - 12" over say 2 - 15"?

king3091 · Post by **king3091** » Wed Oct 03, 2007 4:32 am

no its just because my trunk is big enough to fit 3 and i dont want 15's

Ryan from Ohio · Post by **Ryan from Ohio** » Sat Oct 06, 2007 8:11 am

Being dual 4 Ohm subs you will have some very strange wiring.

Go with 2 of them and wire it to 1 Ohm and get a nice Hifonics amp for them and be done.

If you go with three, you will need a much more expensive amp that can handle the lower impedance. You dont want to do this, cause it will cost you probably twice as much for power...

cargodz · Post by **cargodz** » Sat Oct 06, 2007 10:29 am

^ Ryan has a very good point.
If you go with 3) 4ohm DVC, the wiring configuration would have to be series/ parallel and you'd be somewhere in the 2.667 ohm range, so your amp will not see it's full potential for power...

That's why I asked about 15"s, you'd be looking at relatively the same displacement and space usage and it would be far easier to wire and keep your amp happy... But that's just my suggestion :)

Purple RS · Post by **Purple RS** » Tue Oct 09, 2007 7:00 pm

I experienced that situation firsthand. I have the Memphis Belle amp, which is 1 ohm stable on the sub channel, and powered a pair of JL 10W6 woofers. Being dual 6 ohm voice coils, the best I could get to the amp was 1.5 ohm, I was seeing about 75% of the amp's power potential. I have since installed a single 12" Memphis MOJO (dual 2 ohm) and wired for 1 ohm - OMG what a difference.

Bwcad1 · Post by **Bwcad1** » Tue Oct 09, 2007 7:12 pm

your impedance rise plays a major diffrence in that aswell