System Setup

buy one 1200 watt amp like JBL BP1200.1 so that you dont have to worry about level matching and you want have to buy a distrubution block and extra RCAs.  You should also look at Rockford Fosgate's Power 1001bd amp which outputs 1000 watts at 2 ohms. I like these amps better then JBL's stuff. One more thing to look at is JL's 1000/1 amp if you have plenty of money to spend. This is an excellent amp and its really flexible because it outputs the same amount of power from 1.5 to 4 ohm. If you have 4 ohm sub then you will need to get the Rockford Fosgate Power 1051S instead because it ouputs 1050 watts in 4 ohms instead of 2 ohms like the Power 1001bd. Here are two diagrams on how to wire your subs.

http://www.jbl.com/car/products/product_detail.aspx?prod=BP1200.1&ser=POS&cat=AMP

http://www.crutchfield.com/cgi-bin/S-cxLD2ytYAxp/ProdView.asp?s=0&c=3&g=130&I=5751001BD&o=m&a=0&cc=01&avf=N

http://www.crutchfield.com/cgi-bin/S-cxLD2ytYAxp/ProdView.asp?s=0&c=3&g=110&I=5751051S&o=m&a=0&cc=01&avf=N

sorry bout the long post.

He only needs 1200 watts though so he shouldnt need to wire the subs to get a 1 ohm load. 2 ohm is fine.

if he has the 4 0hm DVC subs, he can't wire them for an overall load of 2 ohms. the jbl puts out the same amount of power at 1 ohm and 2 ohms, both 1200 watts rms.

You guys are both correct, but to make one of you incorrect, sorry guys, I don't like pointing fingers at all, we need to know which L7 subs he is buying, as in what impedance voice coils they will have.