JL XD 400/4 Version 2 settings

[NOVAK]

Does anyone know what the "turn on mode" and "input voltage" should be set to on the V2 version of the JL XD 400/4 amp? Also, do my settings look good ? Installing this amp right now to replace the garbage Alpine PDX 4. FARK kit installed with stock speakers.

[fif_gen_powa]

Turn on rem is for a remote wire to turn it on. Input voltage low is a low level rca input. High is for a speaker level input. 120hz is a little high going to lose some low end bass 80 is considered a good starting point. Input sensitivity should start off low and adjust higher as needed if not loud enough as no distortion is heard

[NOVAK]

Originally Posted by jdubzzz44

Turn on rem is for a remote wire to turn it on. Input voltage low is a low level rca input. High is for a speaker level input. 120hz is a little high going to lose some low end bass 80 is considered a good starting point. Input sensitivity should start off low and adjust higher as needed if not loud enough as no distortion is heard

Ok thanks for the info! I have a 12" sub with its own amp so should I still lower to 80hz?

[fif_gen_powa]

Originally Posted by NOVAK

Ok thanks for the info! I have a 12" sub with its own amp so should I still lower to 80hz?

Tune the highs amp without the sub on
Turn the amp gain (input sensitivity) down, turn the head unit volume to 80% (highest you should go)
Bring the gain up and listen for distortion, stop when it's loud enough, back down if distortion heard
High pass start at 80hz, lower if needed more mid bass, raise if mid bass bottoms out (distorts)
No settings are universal every setup and listeners preference is difference