Which amp for 2 S15L7 subwoofer’s 2 ohm

Where are you getting your frequency response?    I show an FS of 24.2 I would still get your tuning in the 30hz range or else you will still be very selective even playing rap music.   Most songs have frequency ranged of 30-40hz and some dip into the 20 hz range.     If you tune to low your response in general will lack on alot of songs, but if you tune to high, and do not use a low pass filter (although the KX amps have one built in) you could damage the woofer. I would tune to about 32-34 hz, but the problem lies with WIN-ISD does not like the Kicker square woofers (anyone else noticed this?) So you might have o do some diging on exact demensions of port size, or use the calculator on here to figure the port size. The Calc here is on the left hand tool bar under car audio.2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR

2007 USACI World Champion

2007 World Record

2006 USACI Finals 2nd Place