So my set up is like this one pioneer HU going to an external clarion crossover that crossover then goes to 2 amps a sundown sfb 500.4 feeding bridged 2 vex 8's with 2 timpano compression drivers
and
a sundown Sia 2500D feeding an SA 12v2 subwoofer
I have a pioneer headunit an external crossover and 2 sundown amps which one should I tune the crossover on and should I turn off the cross over on the others?