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Those Magnificent Television Tubes
Those Magnificent Television Tubes
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Old 23rd June 2019, 11:30 PM   #1131
smoking-amp is offline smoking-amp  United States
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If it has to be two pentodes, there is the 6GE8, but it's only 7 Watt and 1 Watt.
6BW11 gets you 4 W and 3 W pentodes.
The old standby 6LU8 and 6LR8 get you a 14 Watt P with a 2.5 W triode.
6MY8 16 W with 2.5 W triode (uprated 6LU8)
15MX8 14W with 1.5 W triode (uprated 6KY8)
832A 15W P + 15W P

Last edited by smoking-amp; 23rd June 2019 at 11:32 PM.
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Old 23rd June 2019, 11:37 PM   #1132
leadbelly is offline leadbelly  Canada
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Many thanks all. I'll have a look at those and compare to something like a 6T10.
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Old 24th June 2019, 07:29 AM   #1133
Wavebourn is offline Wavebourn  United States
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Those Magnificent Television Tubes
Quote:
Originally Posted by mashaffer View Post
Anatoliy, I am having trouble envisioning what you are describing.
George already explained. Damper diodes prevent high voltage spikes on the primary when the amp is clipping without load. A foolproof.
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Old 24th June 2019, 09:47 AM   #1134
TonyTecson is offline TonyTecson  Philippines
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Those Magnificent Television Tubes
i have seen hgh power guitar amps with tether diodes .....
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Old 30th June 2019, 11:48 AM   #1135
kissabout2002 is offline kissabout2002  Italy
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Hi Wavebourn, does exist on Russian tubes dissimilar dual triode like 6CY7 or 6EW7 ? ...all the best
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Old 1st July 2019, 12:58 AM   #1136
Wavebourn is offline Wavebourn  United States
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Those Magnificent Television Tubes
I can't say that I know all Soviet tubes, but with 99.9% probability, no.

Triodes - pentodes, yes. 6F1P, 6F3P, 6F4P, 6F5P, analogs of Western tubes. And one magnificent Soviet tube of late color TV era, frame grid triode-pentode 6F12P.
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Old 2nd July 2019, 02:42 AM   #1137
kissabout2002 is offline kissabout2002  Italy
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Quote:
Originally Posted by Wavebourn View Post
I can't say that I know all Soviet tubes, but with 99.9% probability, no.

Triodes - pentodes, yes. 6F1P, 6F3P, 6F4P, 6F5P, analogs of Western tubes. And one magnificent Soviet tube of late color TV era, frame grid triode-pentode 6F12P.
thank you
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Old 14th July 2019, 07:22 PM   #1138
MarcelvdG is offline MarcelvdG  Netherlands
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For those who understand Dutch:

Nederlandse Vereniging voor de Historie van de Radio

Lecture by Bernard Terlingen, now 80 years old, on how he used to collect television valves from waste bins, built high-power audio amplifiers with them and used those to play the Hallelujah from Handel's Messiah at the start of the new year at a high enough volume to overcome the sound of the fireworks. The turntable had to be placed at the other side of the house to prevent oscillations due to acoustic feedback.

Last edited by MarcelvdG; 14th July 2019 at 07:34 PM.
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