sub ohm-rms calculations

cableguy_hd · May 18, 2013

I've got 2 10's ordered with a rms of 270 and peak 540 at 4 ohm each. They are svc subs. I plan on wiring them to my amp at a 2ohm load ( can they be wired at a 1 ohm? ) At 2 ohm does my rms go to 540 each and peak at 1080? I was looking at getting a 500 rms @2ohm load type of amp. Either an alpine mrp 500 or kenwood kac 5001. Or any other recommendations... unfortunately I'm going to have to budget on the amp since I replaced my door speakers.... But I am going with the LC2i... I figured that part out

UNBROKEN · May 18, 2013

You can only wire a pair of SVC 4 ohm subs to either a 2 or 8 ohm load.
How they are wired changes nothing but the load the amp sees, and in turn how much power it puts out. When you factor in that an amps power is divided by the number of voice coils, if you show an amp that makes 500 watts at 2 ohms 2 voice coils it'll give each sub 250 watts.
Personally I'd look at about a 750 watt amp for that application. A good one...not 750 flea market watts.

cableguy_hd · May 18, 2013

Thanks. That makes sense. I wasn't going with a boss or crunch or anything but a more affordable name brand. At least a cea 2006 spec or whatever but ill look for one that has more than 500rms at 2ohm.

mattman_13 · May 19, 2013

Always could find a two channel amp that'll do 300-400 at 4ohms on each channel and justwire them straight.

cableguy_hd · May 19, 2013

*edit*

UNBROKEN · May 19, 2013

mattman_13 said:
Always could find a two channel amp that'll do 300-400 at 4ohms on each channel and justwire them straight.

Yea...as long as you can sum it to a mono channel. You don't want individual subs playing in stereo.

Etroze86 · May 20, 2013

If you are looking at a decent sounding mono amp that will do what you are looking at and not spending a ton of money, I have a buddy running a Soundqubed 1200.1 with a JL 12W3V3 at 4 ohms and it sounds great. I believe it cost him about 300 bucks but it will give him all the wiring flexiblility down the road when he adds more subs. I still want to clamp it and see what it is actually putting out but haven't gotten the chance to do this yet, he lives little over an hour away. Good luck with your build and Unbroken is right don't do stereo subs hard to tune without the right equipment.

cableguy_hd · May 20, 2013

thanks for all the inquiries. I think I'm going to go with a Hifonics mono amp.

sub ohm-rms calculations

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