Hello, I've got myself a vibroverb clone that I have been recently working hard at getting to sound its absolute best. I have had an EVM 15L in the amp for a long time and It may be the best fit for ME personally, but I wanted to pass on this info I found to help other Vibroverb users looking for that Stevie Sound. Whenever I find posts regarding vibroverbs, there seems to be a lot of talk regarding putting the D130 AlNiCo speaker into that amp for that authentic early SRV sound. He may have had that speaker in his amp when he got the vibros right away, but This pic from 1980 shows that he switched to the ceramic E130 VERY early in his career. Way before any of us would have heard a recording of him. here are a couple of pics. I always thought it was interesting because his sound never seemed to have an AlNiCo sound. Not to mention that they get more raspy and harsh when pushed too hard. Ceramic seems to be a better fit for SRV and I think this pic shows that.