About time I signed up here..... I am wondering if anyone has had experience with the Mesa Powerhouse 2x12 bass cabs? I currently have an Ampeg SVT115 but like the idea of higher power handling and having 2x12s for slightly more surface area and punch. Their newish "vintage powerhouse" series looks like the one I would go for, I'm only concerned about the horn. From the looks of the back panel you can reduce it by -2dB, but can you actually turn it off or do you have to go inside and disconnect it? Incase anyone recommends I add another cab to compliment the 1x15, I only want to have one small cab, as I also own an 8x10. Any help would be really cool!