hey, this is my first post here, but ive been reading stuff for about a month or so. Ive always had two twelve inch IMPP's with their own amp. Recently i sold one of the subs with the box and bough two brand new twelve inche subs and a decent amp with a new duel box. I hooked them up last night but didnt test them because i had to go to work, so i went to try them today, and i didnt get any sounds from the two new subs. I checked all connections before i realised that the red light for self protect mode was light up, on the new amp. So i thought great, i bought a broken amp, so i tried the other amp that has always been in the car and was able to get sound from both subs. I decided to put in my old amp that use to run the IMPP that i sold, and now it is in the self protect mode. The wireing has to be good, i know that old amp is still good. So im pretty lost at what this could be, Would it be possible for the self protect mode to come of if i dont have enough power to run all of the subs? Ive got a cap, but i dont want to put it it right now because my car is about to get fixxed because someone ran into the back of it haha. So do any of you have any ideas that i could look for? thanks alot.