Tru i just have dimming lights when im bumping real hard. It dont happen with songs like throw it up. It happens with that punchy bass not long note bass. Like in knuck if u buck it dims it everytime it hits. I aint really lookin into big 3 yet more lookin for some comps.
do the big 3, run a 1/0 gauge to the back at the amp, check your gains, should have no dims at all, im running my stuff off my 80amp alt and yellowtop and no dims