Vh, Ih, VaMax, PaMax, Cgk, Cak, Cga. , , , , , /, , , , , , /, 12BH7 Application Data. Va, Vg1, Ia, Ra, S. The 12BH7 double triode is pin compatible with the ECC81, ECC82 and ECC83 series References: Datasheet &. Type 12BH7 was first introduced in The 12BH7 double triode is pin compatible with the ECC81,2,3 series from Mullard but References: Datasheet &. Type 12BH7 was first introduced in .

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And yes, I have blown a few tubes, but they sure can take a beating!

Isn’t the shared cathode resistor r and not r? It’s not so rare so I’d think someone here has it. Power dissipated in each triode: I was looking at the input stage.

12BH7 double triode

Also, the 6CG7 line is remarkably similar in audio performance across various manufacturers of the same vintage or age. The schematic link at Waltzing Bear is dead, do you have another link? Dunno, I’m only Try to get another copy.

Updates to our vacuum tube stock, audio and guitar kits, DIY parts, and completed designs will appear on this site. The 12BH7 can lend a wonderful life to the tone that datasheer great for jazz or vocals. You must have JavaScript enabled in your browser to utilize the functionality of this website.


12BH7, Tube 12BH7; Röhre 12BH7 ID, Double Triode

Kein geil oder spass. What do these options mean? So if you are substituting you need to make a change. I usually use power potentiometers as plate resistors and just turn until I think it sounds as I want it.

Well, it wouldn’t be the first time a tube was run outside its design center maximum in a commercial product. Late Distortion Groove Tubes – is chosen for those who want their sound dynamic and clean – especially Jazz and Bass players. July 07, There are lots of blogs and posts about the difference between 12AU7’s so I won’t waste your time datzsheet everything. So, where’s that UA schematic then?

12BH7 @ The Valve Museum

Please, log in or register. On my schematic the hand written voltage looks like maybe The abuse inflicted on poor 6V6G’s in blackface Fender Deluxes comes to mind I looked into a 12BH7 data sheet: Anonymous February 1, at 2: Email to a Friend. They all sound best with a good deal of current running trough them.

Vintage vacuum tubes provide the best audio sound! For most circuits this should be well within the tolerances of the design, but you can ask the manufacturer to be sure. The 12AU7, 12BH7, and 6CG7 have very similar electrical characteristics and can usually be substituted for each other.


In dstasheet, the 6CG7 draws twice as much heater current so be sure that this will work in your circuit. JavaScript seem to be disabled in your browser.

Each triode of the preamp tube has matching gain. Started by Brian Roth Drawing Board.

Only registered users can write reviews. If you need help write me via http: November 17, Started by Fablab The Lab. November 07, Quite often it’s with a lot of current. Newer Post Older Post Home.

Did you download it from Waltzing Bear? Medium-Mu twin triode driver tube with 3. If you don’t want to modify the circuit and are unhappy with your 12AUthis is a good choice. Made in Russia, these premium driver tubes are compatible with any 12BH7 tube.