i have 2 pioneer impp 12" speakers in an mtx bandpass box, how much do you think i should ask for in the local swap sheet? also, dont know if i want to sell em, but i have 2 radioshack amps, a 100x2 and a 100x4, how much do you think i could get for them? i need to scale my system down a bit, i feel like im dragging half an elephant around in my trunk.