Can't believe I never related the hi-lo filter to the crossover. Guess I thought it was just a switch that did something magical in the amp letting it know that they were highs.

It's all about tuning to your ear.

Yeah that's what I was afraid of. The big problem with that is the location of the amp. It's under the drivers seat, so the first time I set it up, the seat wasn't in the truck, therefore I wasn't in the best position to listen. I'm not positive, but I'm hoping that the fit isn't too tight to adjust with the seat still bolted in.

And the point about overlapping crossover points makes a lot of sense. I know I've read that, but it just never sunk in.