Hey guys,
I recently bought a used 6505+ that was modded by voodoo amps. The first thing I did was check the bias and it was at 21mA per tube, which is cold. So I crank it up to 28mA per tube which should be totally safe for the RUBY 6L6GC STRs in there. After playing for about 20 mins, My amp loses all bass and the tubes are redplating. What am I doing wrong?
I recently bought a used 6505+ that was modded by voodoo amps. The first thing I did was check the bias and it was at 21mA per tube, which is cold. So I crank it up to 28mA per tube which should be totally safe for the RUBY 6L6GC STRs in there. After playing for about 20 mins, My amp loses all bass and the tubes are redplating. What am I doing wrong?