Cary 805 vs v12

More info delving into the history of this fine? tube amp, I found this quote from Sam Tellig this time when he talked to Dennis Had of Cary.

"The original CAD-805 had four tubes—three in the signal path. Starting as the signal came in, a single 6SL7 dual-triode input tube provided voltage gain. This was coupled to the control grid of an EL34 pentode tube wired as a triode. The EL34 produced about 4W of audio power to drive the control grid of the 805 or 211 via an interstage transformer"

Chees George

Did some search on this Cary 805 with an 805 output tube, and yes it was used at first like I thought, but I think due to hard to find NOS only supply of the 805 tube at the time, it got changed to the 211 because they were being made new, and then in 97 to the 845.

Quote:"The original Cary CAD-805 was named after its output tube: the 805. The amp had a 6SL7 input tube (which has remained constant through various design changes) and an EL34 driver tube. The 805 output tube was soon switched to a 211."Quote:

Cheers George

After all the hype back then on these, I decided to make my own pair of monoblocks way back then, at back breaking 35kg each even with aluminium chassis, also feedback adjustable, and very high quality transformers, power, output, chokes, and interstage.

They consisted of 13d3 Birmar input tube (same Audionote used in their top preamp) then a 12BH7 strapped RCA blackplate driving a Sylvania 300B which then drove the interstage transformer which drove the 805 RCA black plate tube.
These just drove the ESL section of the Martin Logan Monolith III's It was nice even good, they lasted about 6mths before I sold them. I may still have the circuit diagram on an old backup HD somewhere if anyone wants to make a pair, mind you these are lethal!!!!!

Cheers George

There's one pair in Australia with 805 tubes, maybe it was modded to take them? owned by Robert ? the guy who bought the Eichmann cable and bullet plugs rights from Eichmann then on sold it. Maybe it was the prototype who knows?

Cheers George

I'm sure I saw a pair somewhere then. And I said to myself wow! that's a 10th of the price of the Wavac 805 monoblocks.

http://www.wavac-audio.jp/pics/MD-805m.jpg

http://www.wavac-audio.jp/pics/md-805mk2.jpg

Cheers George

Long time ago I may be wrong but the Stereophile issue that had first released Cary 805's on the front cover along with massive Krell Monoblocks, and the title said:

"If one of these amps is right the other must be wrong"

From memory I think the pic of those Cary's had the real 805 tubes in them

Cheers George

I believe when first released the Cary 805 monos had a real 805 directly heated triode single ended transmission output tube (which have the white top cap for the anode), which had more power than the 845 or 211, and it was taller.

Cheers George