[JCP0521]

I finally got around to installing my JL XD600/v2 amp and MB Quart QM200.3 Speakers using Technic’s Harness and Eonon Head unit, the only thing I didn’t touch is the rear deck speakers yet. Install looks pretty good with help from searching a lot of previous posts using stock amp bracket, OEM battery connectors, etc. but the sound is ok, what should I set the 1/2 and 3/4 Channels to on the amp. The MB Quart Crossover switch is set to 0 on both sides.
Amp settings are all new to me.
Currently 1/2 is HP @120 and 3/4 is LP at 130. 5/6 is just set to off I believe.

[ctuna]

The underseats should be low passed at 160 to 2xx depending
on the speakers the doors or rear seats High passed above that.
This is a general range. This allows the under seats to carry as much
midbass and low ranges as possible. Usually you want to set the door
crossover to the negative setting.(the physical door crossover that comes
with the component set.)

Play with it see what sounds good to you.

[JCP0521]

Thank you. I’ll switch the MB Quart crossover to -3 on the fronts and make the amp adjustments.

What I don’t understand is the Amp input/ output wiring setup.

With my factory harness plugged into Technic’s harness I have RCA inputs to my JL XD600 amp on Channel 1,2,3,4, but I have wired outputs on Channels 1&2, 3&4, 5&6.

How is 5&6 controlled? and do I adjust settings on 5&6.

[ctuna]

You need to read the JL manual . It allows you to generate 2 channel
pairs from the front signal (or the one you have hooked up. Each of those pairs has its own eq settings. this stuff is in the JL amp manual. If you don't have the manual you can download it from there website.

[JCP0521]

Got it, just read thru it, makes sense now. Thanks for your help