4ga. to 1ga. stupid or good idea..?

[Rurockn 10+ year member]

I am running a single Power HX2 12", Brutus 1500 mono amp, 1ohm, with a 1 farad capacitor. With the system up loudly the lights will still dim and the bass seems to die off if I'm playing something with a drawn out hit. I'm curious if my capacitor has died (I thought it would leak when it died) or if I should actually go to 1, 2 or dual 4ga. This seems crazy to me, but I have a buddy running only 900rms watts @ 1.5ohm and he picked up 5db by running a second 4ga. power to the amp.. ?

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[brandontw 10+ year member]

hmm sounds like you might try a new alternator or bigger battery caps dont make up for not enough power