I have the 2011 Regal CXL Turbo T05 with the Harmon Kardon system. I used an MTX Re-Q as the LOC tapped into the 6x9's on the rear deck. I have a Kenwood KAC-7204 powering a JBL 1014 sub. Some have reported that the HK would shut down if you added anything to the system. This is not the case. The amp works fine.