Yes but that's both not one!
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Location: London/Durham
Posts: 6,894
I'm Lawrence.
Yes but that's both not one!
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It's counter intuitive, but sometimes the same valves can be employed in different parts of the circuit. My 211 amp has two E182cc valves that serve different functions in the circuit.
Source
SW1X Universal Music Server UMS I Signature with Power Supply Unit PSU I Signature
SW1X USB II
SW1X DAC III Special
Audiolab 6000 CDT transport
Amps
Pre amps -- Hi fi Collective twin mono ladder stepped attenuator, with Charcroft Z-foil and silver wired. And First Watt B1 active no gain buffer.
Power amps -- Welborne 45 SET monoblocks 1.8W / Decware Taboo 6W / Elekit 300B TU-8600SVK plus further improved components 9W / ICE Power 1000W
Speakers
Highly modified Endorphin P17 open baffle speakers containing both vintage and modern alnico drivers and paper cones. All silver wired - 8" Cube Audio FC8 full range drivers and vintage 15" Altec VOTT 416 bass drivers. All sat on Townsend Audio Podium seismic isolation platforms.
BK Electronics XLS400FF Sub.
Cabling
Silver mains cables, interconnects and speaker cables by SW1X
Headphones
HRT HeadStreamer and SennHeiser HD650 headphones
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
Location: London/Durham
Posts: 6,894
I'm Lawrence.
Yes I thought that, they're double triodes so rather than each valve being left or right, one valve could do one task for both L/R and the other a different one. They could just be placed left and right to look symmetric. (Rather than suggest it myself I thought I'd see if anyone else would first.)
Sent from my POT-LX1 using Tapatalk
Location: London/Durham
Posts: 6,894
I'm Lawrence.
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
Location: London/Durham
Posts: 6,894
I'm Lawrence.
Ok,
If this only happens in that one position with any valve you put in there, then it is not the usual heater filament diffrences you get in diffrent types of valves that's causing the valve to come on bright, its posibly a heater circuit issue, especialy if this amp has DC heaters on the first valve, which many amps do!
I am not saying for certain that your amp does indeed have an issue, but i just find it odd that it only seems to do this in one position. A look at the schematic for this amp would be a useful start.
A...
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
Location: London/Durham
Posts: 6,894
I'm Lawrence.
Location: Glasgow/Italy
Posts: 871
I'm Drew.
For several valve types it's not a quirk or an anomaly but a characteristic of certain tube/ brand types- completely within the norm. In your case it depends: when you swap the tube to the other position does it glow there too?