VALVO 807s

If they glow, this is the place to be
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colin.hepburn
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#1 VALVO 807s

Post by colin.hepburn »

Hi All
Just won a pair of VALVO 807s anyone know anything about them and the valvo name can't say I have ever heard of valvo
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pre65
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#2

Post by pre65 »

Well Colin, 807 are nothing special these days, and as usual, Google came up with some information.

http://www.pamandandy.demon.co.uk/valve ... ilips.html
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Cressy Snr
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#3

Post by Cressy Snr »

Hi Colin

807s are lovely valves. They are low power transmitting pentodes. They are part of the 6L6 family and thus share the same DNA as the aforementioned 6L6 and the British KT66 valve. The STC loktal based 5B254 and 5B255M are
the same valve but in a smaller straight bottle.

Triode connected, they sound very nice indeed. They look rather nice when lit up too.

Steve
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pre65
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#4

Post by pre65 »

pre65 wrote:Well Colin, 807 are nothing special these days
What I meant was that there are lots about at quite cheap prices.
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colin.hepburn
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#5

Post by colin.hepburn »

Thanks for the link Philip
Yep I was aware there are a lot of the cheap Russian 807s around I just happen to come across these valvo 807 so just had a bid on and got them for £23.61 all in so not bad then
Just that it now seems I have a stock of valve from the same family that may all sound simmler to each other i.e. EL34 5881 6P3S KT66 and the 807s
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#6

Post by Stuart Dean »

807s could possibly be one of the toughest valves ever produced.
Back in the 1950s thousands of the were used in ham radio transmitters.
Not unusual to see them with bright red anodes and they would withstand this treatment almost indefinitely.
Always accompanied by the faint smell of burning flesh due to the stray RF.
Until recently you could pick them up for next to nothing at radio rallies.
No longer the case unfortunately.
Stu.
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#7

Post by Stuart Dean »

807s could possibly be one of the toughest valves ever produced.
Back in the 1950s thousands of the were used in ham radio transmitters.
Not unusual to see them with bright red anodes and they would withstand this treatment almost indefinitely.
Always accompanied by the faint smell of burning flesh due to the stray RF.
Until recently you could pick them up for next to nothing at radio rallies.
No longer the case unfortunately.
Stu.
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colin.hepburn
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#8

Post by colin.hepburn »

Hi All
Well my Valvo 807s arrived safely today they look like nos stock and are Jan Black plates by the looks of them anyone got a good 807 schematics with HT of about 300/350 volts
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cressy
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#9

Post by cressy »

the single ended pentode kt88 i built is a development of an 807 circuit by aleksander kitic
http://www.tubeaudio.8m.com/807/807.html
i love mine, i havent altered it at all since it got built. i'd give it a go
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colin.hepburn
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#10

Post by colin.hepburn »

Ho Right yes thanks cressy
I forgot about that schematic :)
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