for the finished performance, get the 15 inch L7's that are twin 4 ohms. those subs ( Kicker 06S15L74 and Kicker Solo-Baric L7 sequence 08S15L74 ) are rated at 1000 watts rms. because you'd be getting 2, you'll want them to be twin 4 ohms so that you'll be able to wire them right down to a very last a million ohm load. with this, you'll want a 2000 watts rms x a million channel @ a million ohm reliable amp. this may skill your subs the finished. also, make a ported subwoofer field tuned to 32 hz in case you want to be very loud and performance reliable sound high quality. in case you want to have some more desirable db's, music the field to 33~38hz yet you'll loose sound high quality. do no longer use pre-made boxes, they gained't be as loud as they ought to. on an aspect observe, if its getting in a automobile, make the port and subs face to the rear. if its getting in a suv, subwoofers face up and port dealing with to the rear stands proud because the loudest. i clicked on the link yet ebay stated it wasnt operating. **EDIT** no longer the finished form of amps dude, in spite of the indisputable fact that this is going to juice your L7's fairly reliable. thats what you want, an amp to furnish 2000watts rms at a million ohm with a million channel. via the way, top skill is in no way important. in basic words rms you should seek for. i dont see why human beings do now want you to apply 2000 watts rms. you'd be operating 2 L7's. each and every could have 1000watts rms. so for obious causes... 1000 watts multipy via 2 is 2000 watts rms because u willl use 2 subs. i wager the adult adult males declaring no to 2000 watts rms have little experience with sound platforms. in case you determine the amplifier excellent (in no way positioned max settings on the amp and in no way have the income/element over 3/4) those subwoofes will very last you an fairly very lengthy time period and be very loud. believe me.