ok. 400+ head. i have 2 of the following outs. 2, 4 and 8 ohm. this weekend i used a 410hlf(that is 4 ohms) and an ampeg 15(which was 8ohms) i just wanna make sure i was using the right inputs. for the 15, which was 8 ohms, i plugged into the 8 ohm sections, and same for the 4 ohm. now, was this correct?