Clarion EQS746 Equalizer - 7-Band In-Dash Rotary Equalizer with Subwoofer Crossover Auxiliary Input Car Equalizer "jl audio 300 good" Questions

...jl audio amps 450/4 is connected to the front and rear of the head unit the 500/1 is connected to the subwoofer output and the 300/2 is run off the 450/4 i had purchased a esq746 but it only has 2 ...