depends on what 10 you are talking about. if you ar talking about a L7 i would run it at 750 at 2 ohms. let me know what equipment you are thinking of and i will give you the best answer i can. im running 2 12in Alpine type rs off of a mrd-m1005, this is going to give me 1000 watts at 2 ohms by one, which will work out to be 500 watts rms per sub which is what they like. mainly you want to run your subs in the rms range. if the sub is 500-750 rms i would run the sub anywhere in that range. as for a 2 channel amp, you can run mono amps to 2 subs, that is what im doing. i like class d mono amps because they are made for subs, however you can run a 2 channel class ab amp on subs and it will sound good also.

 

Here is what I was thinking:

Headunit: Kenwood DPX-301
Amp: Kicker ZX750.1 (750watts rms x 2ohm)
Sub(s): 2 Kicker S8L72 (450watts rms x2ohm)
or
Sub: Kicker S10L72 (600watts rms x2ohm)
or
Sub: Kicker S12L72 (750watts rms x2ohm)

If I went with a 12 the rms would match up perfectly. Would that be better or would 2 8's? Also how much better is an l7 over an l5. Is it worth the price difference.

And btw. If its ported does the recommended rms on each sub go down? I was looking at 2 10l7s in a sealed box is was 600 in a ported it was 450

 

JayDogg what are your plans for a sub enclosure?

 

You will be able to reproduce more lows with multiple 10's than a single 10 will provide.
It will fill the car more and sound "bigger" even at lower wattage. (*I tried several subs in my HHR before settling on my current setup) BTW - I still have a killer single Pioneer 700-watt 10 in a thinline box for sale (picture here) that doesn't take up much room in back at all. If anyone is interested - just PM me.

I'm now running 2 Audiobahn 10's in a bandpass box (600-watt rating), with only 300-watts @ 2-ohms. It can get VERY loud when cranked, yet is barely audible outside the HHR, which I like. (picture here) I agree about the HHR bild quality - very impressive, no rattles at all.

 

I think I might stay with the 750.1 and just get 2 8 l7's. That'd be plenty loud. I know this is a lil off the thread, but I'm gonna install a new cd player so I don't have to mess with line splitters or whatever. If I get a double din does it need a dash kit at all?

 

I believe you do if you want it mounted securely

 

Hmm. Well how much are line splitters if I just kept the stock radio. I didn't get the premium system so I don't already have my wires ran.

 

Are you talking about a line level converter? I just bought a Scosche one and it was around $20.

 

you mean to convert to RCAs?

 

dito