Should have really started this earlier lol. As the title suggests I have an Audi A4 Avant, with a little bass Quick run down of the specs and equipment - Audi A4 Avant 1.9TDI Sport - Alpine 9887R Headunit with full speed iPod connection - Ground Zero GZUC 16SQ - Crystal CAM200.2 - 2 Fully Loaded 15" Fi SP4 Subwoofers - SPL Dynamics D6 - Custom Made Enclosure with Adjustable Tuning - 3 XS Power D3400 Batteries [1 up front and 2 in the back] - Dual 210a Alternators with an external regulator - For the most part Knukonceptz 0gauge OFC Fleks wiring throughout Before this install I've had a number of different set ups in this car. I started off with 2 15" Fi BTLs on a 5kwrms Atomic amp, then downgraded to a single BTL15 on various amps - Sundown SAZ1500dv1, Rockford Fosgate T20001BD and a GZNA 1.2500DXII. Now on to the pics...