Can you put EL34's into an amp made for 6L6's?

Young Angus

Kometose Tonologist
Can you do this with a re-bias or is there a reason why this will not work?

Thinking about putting EL34's into a SLO...
 
Re: Can you put EL34's into an amp made for 6L6's?

Well, most 70's 6l6 amps were changed back to el34's with a bias adjust., so i would say yea, but i'm no tech.
 
Re: Can you put EL34's into an amp made for 6L6's?

Well, most 70's 6l6 amps were changed back to el34's with a bias adjust., so i would say yea, but i'm no tech.

:no1: :fingersx: Not so fast there! To put EL34s in a 6L6 amp, Pin 1 on the tube socket has to be grounded to the cathode. And you need a rebias. Take it to a tech.
 
Re: Can you put EL34's into an amp made for 6L6's?

:no1: :fingersx: Not so fast there! To put EL34s in a 6L6 amp, Pin 1 on the tube socket has to be grounded to the cathode. And you need a rebias. Take it to a tech.

Doesn't that depend on the amp?
 
Re: Can you put EL34's into an amp made for 6L6's?

some amps allow you to switch between the two. However unless the Amp manual specifically says it can take either, or it has a labeled Bias switch take it to a tech first. I don't know about SLOs.
 
Re: Can you put EL34's into an amp made for 6L6's?

Be careful.

EL34 takes 1.3 amps for the heater circuit
WHILE
6L6 only takes 0.9 amps for the same circuit.

The resistors and caps are different, it not just a matter of re-biasing.

You could blow the input and output transformers.
 
Re: Can you put EL34's into an amp made for 6L6's?

IF you rewire the tube socket to accept an EL34 and
IF the tranny can deal with the extra current draw then you can put 34's in a 6L6 amp.

If the tranny's can't support 34's then you will have to add a filament transformer to deal with the extra current draw of an EL34.
 
Re: Can you put EL34's into an amp made for 6L6's?

Hmmm might just keep the SLO with 6L6's for now...it should sound decent enough ;)
 
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