Custom OT for 6C33C tube - any advice - diyAudio
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Old 21st July 2008, 09:03 PM   #1
diyAudio Member
Join Date: Nov 2007
Default Custom OT for 6C33C tube - any advice

I am working on an amplifier prototype that I got from a friend. It is fitted with Hammond OT's that restrict the power to only 11 watts. Apparently with the correct OT one can get 18 watts from a single 6C33C tube...?

What would the figuers be that I must supply when I have a set of custom OTs made?

Something like this:

Primary impedance: 600 Ohms
Secondary impedance: 0-4-8 Ohms
Frequency range: 15 - 50K Hz
Output: 20W
DC current: 400mA (??)
Air gap ??
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Old 21st July 2008, 11:01 PM   #2
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astouffer's Avatar
Join Date: Jun 2004
Location: Pittsburgh, crumbling wasteland
Several companies make transformers just for the 6C33 tube. The James JS-6130H should be what you are looking for.
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Old 22nd July 2008, 07:47 AM   #3
ulibub is offline ulibub  France
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Join Date: Nov 2006
Location: Lorraine
just have a look here:

Experience Electronics

I have used their transformers for several projects and I can confirm their very high quality...
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