right now i own a kicker zx200.4 for my speaker amp. my filters are just off low and hi. thats it. would i notice anything if i got a better more adjustable amp? would it be worth it to even buy a new amp. i have diamond audio 6 1/2" componets.
most 4ch amps i see has x-over switch for front and rear channels. in your case i would set it to off position so that should be full range and run passive x-overs for your mids/highs.i can only choose one, of these options.