1 10course 3 weeks ago Why? I was tired of moving around a full size Twin Reverb and Super Reverb 4 x 10. My Vibrolux was not staying clean for medium size gigs. So, I took one of my Super Reverb 4x10 and created an enclosure that in the 1950s would have been called a "Super Amp". --supposedly the first twin amp. A very manageable size! The speaker are custom WHS ceramic 10" @4ohms for a 2 ohm load. Sounds like a smaller Twin or a larger Vibrolux!