Tweed Tremolux Voltages Help

[mdancakster]

Hello there!

It seems you are all specialists there in the field of old Fender Amps!?
I have a few questions in connection with building of my Tweed Tremolux 5E9-A.
The basic question is that what are the basic voltages in the amp?
I mean mainly the values on the output tubes (2x6V6GT’s)
Yet there are not any values in the schemes which I found on the Internet.

or is there any source of information where I can get the values?

Finally, is there anything I should follow building my Tremolux?

Thank you!
I am looking forward to hearing from you.

Best regards…

Martin

[tubeswell]

The 5E9A voltages are on the 5E9A layout diagram. (i.e. 395 B+, a little less for the plates and 370 for the screen and about 24V for the cathodes - not that it matters to be critical about these a hell of a lot. with those voltages shown on the layout, the tubes are idling at about 17W!)

[Wombaticus]

OK, now you are confusing us. In your thread yesterday, you said you were attempting to bias this using parallel 2R cathode resistors as you might for a fixed biased amp. But the 5E9A has cathode bias (with a too-small 250R cathode resistor). In your PM to me you also mentioned that you are using a 5U4GB rectro, which is also not the recto for a 5E9A. Are you sure you didn't build a 5G9? Or, gods forbid, do you have BOTH a 250R cathode resistor and some little ones in parallel on your cathodes?

Here is the link for the 5E9-A: http://www.schematicheaven.com/fende...5e9a_schem.pdf

Here is the link for the 5G9: http://www.schematicheaven.com/fende..._5g9_schem.pdf

[tubeswell]

OK, now you are confusing us. In your thread yesterday, you said you were attempting to bias this using parallel 2R cathode resistors as you might for a fixed biased amp. But the 5E9A has cathode bias (with a too-small 250R cathode resistor). In your PM to me you also mentioned that you are using a 5U4GB rectro, which is also not the recto for a 5E9A. Are you sure you didn't build a 5G9? Or, gods forbid, do you have BOTH a 250R cathode resistor and some little ones in parallel on your cathodes?

Here is the link for the 5E9-A: http://www.schematicheaven.com/fende...5e9a_schem.pdf

Here is the link for the 5G9: http://www.schematicheaven.com/fende..._5g9_schem.pdf

Hi Wombaticus

He might be confused because he is looking at the 5E9A schematic, which shows a 5Y3GT rectifier, whereas on the 5E9A layout (which shows voltages), it shows a 5U4G rectifier and has a little note at the bottom saying that the 5E9 used a 5Y3GT.