Mesa dual rect question

[StudioMxpx]

on the back of my mesa it has the bias switch..6L6 and EL-34..They said in the manual to make sure the the bias switch is set correctly to match the tube type..where do i change the tube type at? is that the valcummtube and silicon diddle switch? and whats the spongy and bold switch? i read the manual and i dont quiet understand it all the way..how should i match them together?

 

[Outlaws]

See those light bulb looking things? I think the Dual Rec should have 4 power tubes, so look for 4 big tubes that say 6L6 or EL34 on the glass. That is what the switch should be set for. You need to buy tubes before you go flipping that switch.

 

[StudioMxpx]

thanks!!! yeah i got it..i got the bias switch factory stocked with the EL-34 on..when i have 6L6 tubes..wtf? so yeah i swicthed it and wow what a diffrenece!!! i just hope i didnt mess up my tubes now..ugh..well its baout time for some new tubes anyways..

 

[Myriad_Rocker]

I don't think it will hurt it too much. I've heard of people running that amp with a different bias setting than the tubes are for. I have a Dual Rec as well...I've never done it myself, but I've heard about it.

A suggestion...if you're looking for new tubes, there's no better place than www.eurotubes.com. Bob is great and knows what he's doing.