This power cap is absolutely brilliant I had the dreaded headlights dimming to the bass an this caps totally solved this issue.. my subs sound way better too much more power than before.
I highly recommend this 5 farad cap.. I have it fitted to a 1000w rms amp running 2 db series edge 12" subs at 2ohms it's a big cap but definitely worth buying to keep the amp powered how it should be and give the subs all the power they will need..