lth1 wrote:Is it possible to use the 6L6CG in the Eiclone; if they will work, what do I have to change in the EL34 version.
Hi Lee,
Plug and play - nothing needs changed except the need to adjust the bias.
The bias voltage range is flexible enough to go lower for the 6L6GCs (and KT88s). You will want to lower the bias first; maybe to -55V as measured at pin 5. This is in order that you don't have a runaway tube when switching from EL34s to the 6L6GCs due to the different biasing.
The grid resistors are 100K, so you are OK there, too.
I assume pin 1 is just floating and unconnected in 6L6GCs, with G3 internally connected, whereas we strap pins 1 and 2 on the EL34. This doesn't need changed, either.
Shannon