ill be heading out soon. ill get back to you tonight or tomorrow when i find the time.

but to quickly clarify before i leave, i mentioned jl, rockford, audison & alpine as they have dsp's which allow speaker level input. so i guess you could say they're a more advanced LOC with more tuning features than the cheaper varieties. seems like you want those tweaking features so most likely you'll be heading down the path of dsp's - as opposed to a sven which is fairly basic.

that should do for now, will get back to you another time. im sure someone can pitch in & help you while im gone tho.