Man you people have to get some real stereo equipment. this is my set up...
Stock head unit, feed into a singal to preamp box,by pheonix gold, there the sound goes to a Image Dynamics IDQ-1 EQ. from there the signal goes to my Perforance Techniques custom built amp(its a custom amp company out of canada) 75x4 which variable channel levels, i have the bottom 2 channel bridged to 2 OHMS running the best sub money can buy a 12" Image Dynamics IDQ-12. if u can afford one buy one. The top 2 channels on the amp go to the front componet speakers, which again is Image Dynamics Chameleon CXS component set 6.5".mounted in a custom fiberglass sealed box, the tweeters hold their stock location but have been mounted on fiberglass baffles so they could get angeled to the ears of the driver. For rear fill i use Image Dynamic 2 way coaxial speakers , which run off stock head unit power, but the sound was run through the IDQ-1 so they are in tune with the rest of the system. All of the heavy equipment is mounted in the trunk the sub resides in the left part of the trunk wall mounted on an angel so it doesn't cancel the amp is mounted in right trunk wall under plexiglass, and the IDQ-1(EQ) is mounted in the spare tire under plexiglass as well as all the fuse and distrubution blocks. i used all 4 guage power and ground cable by street wires, and all the spealer cable is EFX blue 12 guage. The IDQ-1 comes with a plam pliot looking thing that controls the whole EQ, this stays up front with the driver and i made a custom mounting spot in the arm rest in the center consol. all boxes in trunk is covered in factory color matched tweed. All work was performed by meyself. my system was tuned by myself and my friend Glen, who is currently #7 in the world. so he knows what he is doing. I would list the EQ settings but its 2 pages long oh well.
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2001 sentra SE 2.0
w/ perforance package,
DTM muffler, custom cold air intake, NOS/ZEX hybrid Nitrous system 55 shot, HID bulbs all around. Ti vavle springs and retainers, Port and polished head, ported intake manifold, bored TB, port matched to gaskets, 5 angle vavle job. Eibach Sportline springs. x15.5 @ 88(STOCK) 14.8 @ 94(on the bottle),