I have the Infinity 6.5 separates in my Maxx, and I love how they sound. But be warned: they require alot of power. My Sony headunit pushed them ok, but I was getting nowhere near the sound they could put out, so I bridged my 4 channel Kicker 200.4 to run 2 channels. They sound awesome now.
Just FYI, here is what I have: Sony MP3 player w/aux input, input has XM receiver and Ipod on it (switched by DPDT switch), Infinity 6.5 separates up front and coaxial in back doors, pair of Infinity 12" dual voice coil subs wired to 1-ohm load, Kicker 200.4 and Kicker 600.1. Now thats alot of gear in a small car.
Welcome, downwardly mobile yuppies, to the dawn of the Age of Nefarious.
1993 SSEi - FrankenJinx - dead and gone.
1994 SSE (136K strong) - 180* t-stat,HD alternator, most unequipped SSE on the club, XM radio, Kenwood CD/MP3.
2006 Chevy Malibu Maxx LTZ - Custom 2.25" manifold-back exhaust w/FM-80. Probably the only Maxx with this system.