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Old 9th June 2006, 12:15 AM   #1
jarthel is offline jarthel  Australia
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Default installing tubes upside-down? bad? maybe it doesn't matter?

as title. thank you.

ps. don't ask me why. just wondering if it's possible
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Old 9th June 2006, 12:21 AM   #2
SY is offline SY  United States
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Yes, unless the datasheet says otherwise. But... you'll need a positive means of locking them in their sockets and to get sufficient air past them.
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Old 9th June 2006, 12:22 AM   #3
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Thousands of Fender guitar amplifiers prove that it can be done.
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Old 9th June 2006, 12:31 AM   #4
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As far as any other position read the data sheet.

Wayne
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Old 9th June 2006, 12:38 AM   #5
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Most DHT's can't be operated sideways, but upside down is OK. Mercury Vapor rectifiers will NOT work right upside down. Most indirectly heated tubes can me mounted in any position.
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Old 9th June 2006, 01:01 AM   #6
jarthel is offline jarthel  Australia
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how about 5651?
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Old 9th June 2006, 01:11 AM   #7
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The Sylvania data sheet says " Mounting position ------- any"
The Raytheon data sheet does not mention this. So hang it any way you want.
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Old 9th June 2006, 10:37 AM   #8
EC8010 is offline EC8010  United Kingdom
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Default Hendrix...

No, no, no. Valves shouldn't be hung upside down. The electrons get all confused and don't know where to go. Fender only did it because they wanted their amplifiers to sound as if the guitar was being played left-handed and upside down (fashionable at the time).

Seiously, in the absence of manufacturer's data to the contrary, post #5 sums it up.
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Old 10th June 2006, 12:27 AM   #9
Enzo is offline Enzo  United States
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Would upside down tubes be right side up in Australia?
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Old 10th June 2006, 12:31 AM   #10
anatech is offline anatech  Canada
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Yes.
All text books were rewritten for Austrailia to compensate for this.
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