Anychance someone can throw this out for me. Also, anyone happen to know what the bass knob that comes with a IA 20.1 is for? Right now the gain on my amp is at half and its rediculiously loud, without the bass knob attached and with my epicenter at the lowest point. I stepped up from 3 8w6's to this monster. 1ohm load, duel 2ohm coils. Voltage?