Greazygeo
Well-known member
Having a few vintage amps around that were made when line voltages were lower than modern times, it has interested me to know what they sounded like with lower voltages. Finally had the opportunity to pick up a Variac and give it a whirl....so far I've only tried a 68 plexi 100 Super tremolo (not had a chance to open it up and check voltages to see what exactly changes). Ive tried it as low as 100v and as high as 120 so far. Down around 100 its more spongy feeling and around 115 is where I like it.
Running the amp on 10 used to pop the mains fuse, while on 7 the amp was fine. With the lower line voltage, the amp will run on 10 now no problem.
My OR120 will only run on 5 before popping the fuse, it is intended to run on 240v so the mains fuse is too small, I need to get to the shop and grab a bigger fuse one of these days. It's plate voltage is up over 600V! Interesting to see what the variac does with it.
Geo
Running the amp on 10 used to pop the mains fuse, while on 7 the amp was fine. With the lower line voltage, the amp will run on 10 now no problem.
My OR120 will only run on 5 before popping the fuse, it is intended to run on 240v so the mains fuse is too small, I need to get to the shop and grab a bigger fuse one of these days. It's plate voltage is up over 600V! Interesting to see what the variac does with it.
Geo