Re: vocals really low
The crossover for component sets are usually around 70~100Hz high pass. Does the Brutus have full-range preamp outputs or does it have a crossover for it too? If so then set it to "pass thru" or full range. I had one and I should know but I don't remember.
Is the gain on your 4 channel turned up? Also make sure the preamp outputs from the headunit are set to "full range" and not something else if you're running the highs signal from the sub amp.
98 Cadillac Deville
Pioneer Premier TS-C504s
Sold to: Mills561, Kross6622, sleazebagger, shpatb, esmokah
Bought from: DJ Nitrous 427, 97maxima