I accidentally ran my head (100-watt Marshall Superlead) for about 30 minutes without it being plugged into the cabinet. It ended up killing one of the power tubes (#4) and the High test fuse. I pulled the one and four power tubes, replaced the high test fuse and halfed the ohms to run the amp at half power.
Is it better for me to repleace one and four with new tubes without biasing the amp, or run it at half power?
My band is on the road right now, so replacing all four and having the amp biased is not an option.
Thanks in advance.