Svetlana KT88 winged C's failings

richwalters · 11th July 2007, 08:09 AM

I'm beginning to get noticeable failure quotes after 350 hrs service at modest usage.
Typical is irregular current and microphonics when glass is tapped. This suggests poor internal connections. Anyone else had sim problems ?

richj

KaDe · 11th July 2007, 07:39 PM

I´ve had a broken heater connection in one of my Svetlana EL509-2 - maybe due to rough handling - ?
Also bias-current is not as stable as with other brands I can confirm - but the sound is wonderful - !

Klaus

11th July 2007, 08:09 AM	#1
richwalters diyAudio Member Join Date: Sep 2003 Location: Alps:Tube amp designs over 150W, SMPS guru.	Svetlana KT88 winged C's failings I'm beginning to get noticeable failure quotes after 350 hrs service at modest usage. Typical is irregular current and microphonics when glass is tapped. This suggests poor internal connections. Anyone else had sim problems ? richj

11th July 2007, 07:39 PM	#2
KaDe diyAudio Member Join Date: May 2007	Svetlana tubes I´ve had a broken heater connection in one of my Svetlana EL509-2 - maybe due to rough handling - ? Also bias-current is not as stable as with other brands I can confirm - but the sound is wonderful - ! Klaus

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