Hey All, Just have a problem with my amp or subs that has just happened in the past 4 days What happens is volume on 22 is fine but put up to 23 n i loose a heap of bass. My subs used to crank to around vol 27/28 b4 they peaked Ive checked all my grounds n power, thinkin that it was unable to ground out properly once on this volume. Put multi-meter on it n she reads perfect, 12.4 off, 14.3 on, and only loose's around 0.2v wen pumping Ive got a JBL 75.4 520w amp running 2x JBL 12inch 250rms subs bridged. I have no idea y this problem has started, cept that i did overheat the amp bout 2weeks ago on a long drive. The problem has only started on fri night as i noticed it sounded distorted at a level it should be smooth. I turned me gain down a bit thinking it may have worked its way up a bit but still no change. Im stuffed if i can think of wats goin on. Any help would be great,Thanks :thumbsup: Also what sends the signal for vol control from H/U to amp.