06-30-2013, 03:57 PM
Hi All;
Thank You both for your answers.. Codefox, As I stated above I knew that the filaments were different that was why I said I would use a different filament transformers for the 12AU7 and why I said I would use only four wires, two for the plates and two for the grids.. It is not permentant just to pass a 400 hertz signal to a 4" speaker..
Morzh, I like that suggestion, I would have been afraid of damaging something.. But, I'll try it.. When I was testing some of my Power transformers to find the correct primary, at first on one of them it tripped the "reset fuse" button.. So I have been a little leary since then about using my variac..
And I don't want to wait the week out and not doing anything while I wait for the new tube to arrive.. So, I can start checking some of the different stages out.. Thank You both for some great suggestions..
THANK YOU Marty
Thank You both for your answers.. Codefox, As I stated above I knew that the filaments were different that was why I said I would use a different filament transformers for the 12AU7 and why I said I would use only four wires, two for the plates and two for the grids.. It is not permentant just to pass a 400 hertz signal to a 4" speaker..
Morzh, I like that suggestion, I would have been afraid of damaging something.. But, I'll try it.. When I was testing some of my Power transformers to find the correct primary, at first on one of them it tripped the "reset fuse" button.. So I have been a little leary since then about using my variac..
And I don't want to wait the week out and not doing anything while I wait for the new tube to arrive.. So, I can start checking some of the different stages out.. Thank You both for some great suggestions..
THANK YOU Marty
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