Hi, which post as I haven't yet put a subwoofer in? I'm actually in the middle of building a box, but I also bought the Musicar amplifier to replace the existing Bose amp, so will not need the LC2 as the subwoofer amp will plug right into the Match Up 10 DSP amplifier that Musicar uses. Someone else I think posted about hooking up the LC2 to the existing amp, and I think they managed to keep it all under the passenger seat.