i know what your saying but 6m length in cable is quite a bit for demand and supply to travel to hit an instant note, even in 4 gauge. 4 farad is a bit much, the technology has to improve for prices to become reasonable but up to 3 farad the prices arent too bad for an improvement on the sound system which can supply those peaks on power only when needed. a foot of 0 gauge wouldnt cost that much if paired with a capacitor and deliver near as much power for the savings in using 4 gauge to the cap instead of zero gauge