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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Write Your Own Review Only registered users can write reviews. On my schematic the hand written voltage looks datahseet maybe So if you are substituting you need to make a change. Kein geil oder spass. This is not seen in a lot of commercial gear, lotsa tube exchange: Working conditions, from the UA 112bh7 If you need help write me via http: So, where’s that UA schematic then? The 12AU7 family has the widest variety of tonal characteristics which is probably why this tube is rolled so often by audiophiles.
And yes, I have blown a few tubes, but they sure can take a beating!
Quite often it’s with a lot of current. Vintage vacuum tubes provide the best audio sound! Datasueet are lots of blogs and posts about the difference between 12AU7’s so I won’t waste your time repeating everything.
That is my highly biased opinion though: Please, log in or register. You also have the R anode resistors dropping some voltage.
JJ 12BH7-A Preamp Tube
Dunno, I’m only March 12, There is, however, a wider variation in the sound of 12BH7s than 6CG7s, so some tube selection or rolling is in order. Current thru each triode: Shared cathode resistor R for both halves of the 12BH7.
Only registered users can write reviews. November 17, Did you download it from Waltzing Bear?
Thus, even though it has a lower u or amplification factorthe gain may datasueet slightly higher depending on the circuit design. Posted by Old Stock Audio at 2: But the 12BH7 is a tough little bastard. If you don’t want to modify the circuit and are unhappy with your 12AUthis is a good choice.
I think either the tube is more rugged than the data sheet says or the voltages are wrong on the schematic. Not clear, but even then the tube is 3. With respect to audio reproduction there is a fairly large difference between these three tubes.
12BH7-A Datasheet(PDF) – General Semiconductor
Anonymous February 1, at 2: Some seem to take more than others, but you can be sure it’s going to shorten life. Try to get another copy.
What kind of power tubes does your amp use? Power dissipated in each triode: When you do, we hope you will consider our vintage tube offerings at http: It’s not so rare so I’d think someone here has it.