Can I pull 1 output tube in a 50w Marshall?

[mixn4him]

I have a modded 1987xl small chassis that I am have a custom combo cab built for and am curious if I can pull a single el34 and change output impedence down a step to run a single 12"? Do I need to change output transformers, re bias a little cold, or what? It has MM transformers. Just looking at options to make this into a low watt grab and go combo...
Thanks!

 

[scorched]

Uh, no. That won't work. They are a push-pull team and taking one out destroys that.

You might consider a pair of THD Yellowjackets. They're EL84's with a special base to plug into larger tube sockets. Measure your clearance first. They make a short base version for tighter fits.

 

[mixn4him]

That's what obese thinking, may just sell it and buy something more like I need instead of kidding this anymore, thanks!

 

[phsyconoodler]

Install a Lar-Mar master volume in the extra speaker jack hole.You can always reverse it later when you want to sell it.
It's the most natural sounding master ever.

 

[xtian]

+1 LarMar, also called PPIMV.

 

[walterw]

the ol' "one wire mod" to make it a 2204-type amp with a master is another way to get marshally goodness at sane volumes.

hell, a single inefficient speaker like a g12-65 with the amp in normal "plexi" mode, using a pedal or two to add crunch, can sound really good without blowing up the room.