Is it better to use the crossover on the head unit or amplifier? Should I set the HU subwoofer crossover to Through-Full and adjust setting using amp, or set the crossover on the amp to 150Hz and adjust using HU??
i'd bypass the amp's crossover if you can and just use the HU's, so the amp is only getting the signals it needs and not filtering too. (unless your amp is of better quality then your HU i guess) i've heard you can get some funky interferance using both crossovers.