Replace Active Crossover or New Head Unit??

[mistert 10+ year member]

I started having issues with my 4 channel amp (JL Audio 300/4) and noticed that one side is louder than the other. After troubleshooting, the problem is resolved if I push on the RCA outputs in the AudioControl 2xs. I could try to take it apart and solder the connection of the RCA that is troublesome. My headunit has only 1 set of RCA outputs so I need the crossover to seperate the highs/lows so I can run the JL 300/4 to the front/rear speakers and a Kicker 750.1 to the 12" subwoofer.

If soldering doesn't resolve the issue, should I replace the xover with a new one or should I just pay a little extra and get a nicer headunit with 3 outputs (FR/Rear/Sub) outputs that have 4 or 5 volt outputs and run it directly to the amps and use the amps' built-in xovers?

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[mistert 10+ year member]

I just went ahead and replaced the AudioControl 2xs for a new one so I can continue using the Alpine headunit that I have. I won't be able to use the fader feature, but the 300/4 is so that less power goes to the rear speakers so that they won't take away from the front soundstage.