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In Reply to: RE: Filaments and filament bias posted by euro21 on April 15, 2016 at 03:29:02
Hmmmmm. I thoroughly enjoy my current WCF output stage and I figured since DHTs are so much more linear than the 6as7/6080s I'm using that it simply must sound better. Am I right in assuming this?
In any case I would go for an OTL solution. The filaments complicate it a bit but it won't be too hard to null the offset of the filaments and still get the 1 amp current.
Although I'm still a bit confused on what the cathode to plate voltage is when there are two voltages on either end of the filament.
I'm curious what you meant when you talked about DHT/IDHT mixing and other tubes.
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I regurarly use (sand or tube based) CCS loaded DHT tubes, sometimes CCS built with IDHT tube (for example E180F/E280F/D3a, 6N6P etc.).
Where did you get that DHT model for LTspice?
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