Hi bmichels
Nice rig there. I spotted an 813? Is it an RCA 1943?
I have those in my amp. Also some nice Mullard 813 made by Philips in France about same vintage.
Mullard CV26
Hi bmichels
Nice rig there. I spotted an 813? Is it an RCA 1943?
I have those in my amp. Also some nice Mullard 813 made by Philips in France about same vintage.
Interesting. Mullard CV26 is a copy of the 813 which RCA invented. Most Mullards are actually made in France by RTC or Philips I am told. I have a set of 4 Mullards branded in my stash, with made in france on the back.Mullard CV26
The BHSE has +/1400 volt supplies. According to Kevin Gilmore, EL34 tubes run at 18mA plate current - this is set by the current loads, and the original BH cathode was at '350 volts, so a cathode to plate voltage of 350V should be close. For matching, he could run the EL34 triode connected with 350V cathode to plate voltage, adjust the plate current to 18 mA and match grid voltages.
Each will have a preference I'm sure, but BHSE is the first amplifier that truly opened up the 007 mk 1 for me--until then I never understood the fuss, but now they are my favorite. But they don't quite work for the 009, in my opinion, which I pair with a Mjölnir-Audio KGSSHV mini Carbon.
+/- 400v power supplies
1400 volts is a whole bunch harder
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I was told there was a youTube video by Justin that illustrates tube biasing for a BHSE. Can't find it. Ayone have a link to it?
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