Kinda new to this, so this is probably wrong!

I am running a set of 2 way Morel Elate Comp. up front powered by JBL GTO 75.4. Rear spks running off deck power work fine. Can't seem to get any mid level out of the components up front, its all highs. Adjusting the crossovers, gains,and freq. has no real affect. RCA from HU to amp, red RCA into front input, Black RCA run into rear input on amp for more power, corresponding wires from output on amp to crossovers. Crossovers bridged. i want one channel/spk for max power to each spk.