Hello first of all. Hope there are a few nice people here who can help me =) have to buy before me nen corsa b 1.4i and plan now already the whole system in there… have to jump so about 1000€ for it. music direction is hiphop and trance/techno. had the following introduction: a 30s (38s?) housing sub which makes quite good pressure. a 4-channel end stage with sufficient power (more than 4x100W @4ohm ?) 1F power-cap new 2-way coax frontsys, possibly also hecksys for the storage which companies can you recommend me? hiponics, soundstream, esx, groundzero….? but have a few more questions ) is the lima/battery from corsa b sufficient for a larger end stage or does it have to be a stronger lima or second battery? and can I run the front system on the R/CD, and still run my end stage at the same time via the amplifier output? soo….much written and little content ^^ Thanks already GrandLX