So I think I did an upgrade and bought an Alpine 10 inch type R... I have http://www.fusioncaraudio.com/europe/car-audio-1/amplifiers-7/enam60010-21-product.aspx#addninfo that Amp hooked up to it, but I can't figure out how the fuck to tune the bastard. I have it hooked up to a line out converter of my rear speakers...I also have no idea how to tune that I know I'm not getting the right sound from my sub...my shitty MTX hit harder then this fucking thing. What do I do? Buy new amp? get another sub? Do I need an Alpine amp? Sub is in a sealed box also...I listen to hard rock so I am looking for that fast hard kick drum sound.