What does this mean? Dual 3" ASV 4 Layer vouce coil. Does the size matter and what is the ASV and 4 Layer mean? Also do you know what this means? THD @ 1 Watt, (4 Ohms) 0.30% Signal-To-Noise Ratio Below Rated Power Output 100Db Frequency Response 20Hz To 250Hz (+/-3db) Input Sensitivity 300Mv To 5.1V Does anyome know how the subs create the bass, if a 15" push's more air then why are some 15" subs louder then others if the others have thicker foam and move more? I was told that it is the amount of air moved and a ported moves air in two places. Also if the magnet has a lot too do with, can you add more powerful magnets for increased power? Why does the size of wire matter to an amp if the Sub is only connected to the 12 gauge - 16 gauge wire? Then if the Amp has 8 guage speaker wire terminals, then why does it matter if NO sub has bigger then 12Gauge wires after the subwoofer terminal? When is 0 gauge or 4 gauge to big for a compacitor or what size farad would you know need? So if anyone can answer any of these, teach everyone who see's this! I really want to know all of these answers?