Switching power tube positions.

[greendy123]

Is it safe to switch the inner tubes to where the outer tubes are and outer to inner? I know the tubes work in as pairs inner/outer tubes. I was just check if this is safe to do so I can be sure the heater filament in one of my power tubes is dead for certain. It just seems like a weird problem because just a few months ago the problem happened, then I just switched the inner tubes around and it started to working again.

 

[slightly_rude]

Re: Switching power tube positions.

Yes you can. If they were a matched quad, you don't have worry about which ones you switch. If you have matched pairs, then switch the two inner tubes or the two outer tubes. In a 4 tube setup , you should use matched quads as most amps do not let you bias each pair separately.

 

[greendy123]

Re: Switching power tube positions.

Thanks for the tip, I'll try switching them tonight and see if it starts working again.

 

[greendy123]

Re: Switching power tube positions.

Okay that made it lit for a bit. It started off not lit then after a few minutes the filament lit and warmed the tube up. After another few minutes the filament died again and the tube started to cool down. Now I'm sure its just a bad tube.