If you are someone whom has been convinced that a capacitor doesn't help, I have proof it does. After installing one in my mini van yesterday I immediately noticed the sound comming from the subs was enhanced greatly. The dimming of the lights on the radio, head lights, and instrument panel stopped. I am running the wrong awg wire from the battery which also contributed to dimming but, with the capacitor supplying voltage and current directly to the amp, helps bypass the wiring problem. I was told 1/0 wire isn't needed for the 1200 watt system I am trying to accomplish. Actually I was told 4awg should be more than enough. So before running out buying extra batteries and geting 0awg wire, look into buying a capacitor. Besides it can't hurt to have one even if you think it's not working.
WB
WB