Hi guys and girls,
I was playing bass through the head of my musicman sixtyfive in a Aguilar db115 and when I turned it up the fuse blew.
I replaced the fuse, lowered the volume but instant hum and then blew another fuse.
Both of the tubes light up and no obvious damage to the vacuum. And they're newish tubes.
I'm running JJ kt88's and revised accordingly. The plate resistor is 220k, most reconnections is to swap this out for 100k but as it's only 65watts I thought it would be fine as per the spec sheet of the tubes..
Any theoretical wonderings appreciated!