Bass Mod for Factory Amp Jul 9, 2009 13:39:08 GMT -6 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by TexasG8 on Jul 9, 2009 13:39:08 GMT -6 The sub-amp is in the trunk next to the battery. Remove all the covers, slide fingers below amp and feel for gain control and give it a turn.