I don't know if there has been threads already on this subject or not but here goes. Tonight at band practice I was playing a line thats got a pop on the A on the g string. The singer in the band said after a song we are working on " Dude some light keeps going on when you nail that high note, dude your 10's look like high beems". I'm pushing an Ampeg B4/10HLF and I think it has a bulb on the tweeter crossover for protection and I'm onlt guessing when it starts to clip the light bulb will light up. My setting on the tweeter is half way. You can only have off or half or full. I turned the highs down on my crossover on my M-pulse 360 and it stopped. My questions are : Is that what was lighting up my cab? : Should I turn my tweeter up on full ? : What else can I do to keep the thing from getting close to blowing ?. I don't think I was playing to loud my master gain was on half and the pre was on a third. Of course I never think I'm to loud but this is a matter of taste. Oh yeh I wasn't seeing things all of us play clean if you know what I mean! Thanks for any constructive feedback.