I'm in dire need of help for my stereo. I have a 2008 Jeep Wrangler Unlimited with the Infinity stereo system. I just had Best Buy install Polk Audio DXI651 for both my Fronts & Roll Bar speakers, they replaced my factory sub with the Rockford Punch P3SD48, and installed the Kenwood Excelon X700-5 to my factory deck. I was completely disappointed with the sound, mainly the bass from the sub or the lack of bass from the sub. I put my ear up to the enclosure and you could barely hear anything from it. The installer claim that this was due to still using the factory deck. I'm not buying this though. 300 Watts RMS going to this sub should really be moving this woofer. Any ideas???