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Old 14th April 2004, 08:06 AM   #1
rnx69 is offline rnx69  Estonia
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Default Has anybody built 6BG6 or similar OTL amp?


Problem -- I've got a box of NOS Russian 6BG6 equivalents (6P7S). So I have an idea to make some amplifier using those tubes, but I live in country, where output transformers aren't too easy to get. Purchasing from Internet might be very hard and not very cheap action as well. I found some schematics without OPT, but those use 6C33 tubes. So here's my question -- is it possible to make some OTL amplifier (around 7-10W per channel) using my valves?

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Old 14th April 2004, 11:31 AM   #2
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As I recall, the 6BG6 is a Beam Pentode. It has a rather high plate impedance so it would not be a good candidate for OTL duty.
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Old 14th April 2004, 01:25 PM   #3
SY is offline SY  United States
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What Frank said- the perveance is low, so it wants to swing high voltages across high load impedances. Basically, it's a 6L6.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
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