I bought the ampeg isovent cab with 2 10's and 2 15's isobarically mounted. That means the 15's face each other and are out of phase. I bought this to replace my 8x10 for my Ampeg V4-B head. Result... Works great and handles my head very well. Very similar in tone to my 8x10 with less space and weight. It was used and I paid 300$.