Re: Eq tuning
you should avoid adding processing equipment if it's no absolutely necessary. you should have two high-pass filter (let's high frequencies pass while lower ones die) options. the first is on your head unit. get the instructions out for it and see what you can do. try 80Hz first. the second option is on your 4-channel amp. switch it to HPF (high pass filter) and adjust it to around 80Hz and see what that does for you.
4x 12" HDC3's
1x Hifonics Maxximus (rated 10,000@1ohm)
2x Powermaster D3100
8x runs of 0 gauge
1x stock alt
155.2 dB legal (vehicle off and @50Hz) in a Ford exploder