Dover, Now I should be responsible if someone doesn’t read the entirety of one of my posts? Especially as in this case I have already stated in no uncertain terms that the proposal is a no-go, for two other compelling reasons? I think I have always been courteous to you, even when on the odd occasion I have disagreed with advice you’ve given. I am actually rather shocked at your vitriol, which seems uncalled for, if not also ridiculous. By the way, the fact is that you CAN run a 12AX7 off a 6.3V filament supply, in case that’s what you are so enraged about. When running the filaments off a 12V supply, the filament supply attaches to pins 4 and 5, which lights up both halves of the tube with the respective filaments in series. Pin 9 is left open. If you are using a 6.3V supply, you use pins 4 and 9 for one half and pins 5 and 9 for the other half of the dual triode. This is a unique feature of the 12AU, T, Y, and X7 dual triodes.
Amperex "Bugle Boy" tube compatibility
I need to replace a vacuum tube in a pre-amp section of the integrated amplifier as the previous tube Beijing 6N11 went bad. The Amperex "Bugle Boy" ECC83/12AX7 tube has the same pin layout as Beijing 6N11 tube. According to description on Amazon the Beijing 6N11 may be used instead of ECC88, E88CC, 6922, 6DJ8, 6922 and 7308. Would it be okay to use Amperex "Bugle Boy" as a substitute to Beijing 6N11 tube?
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Wouldn't Amperex "Bugle Boy" ECC88s, if BB ECC88s were ever actually made by Amperex, be a premium value in tube world? If so, you can bet someone somewhere has made some fakes of it. I think there are even fake Telefunkens with the diamond engraved in the glass envelope on the base. To distinguish that TFK fake from real, you have to know whether the diamond is embossed or engraved (in other words, sitting ON the glass surface or grooved into the glass surface). |
Wouldn’t Amperex "Bugle Boy" ECC88s, if BB ECC88s were ever actually made by Amperex, be a premium value in tube world? If so, you can bet someone somewhere has made some fakes of it. Yes. So what? Are they cranking out these fakes at such a high rate that the world is flooded with them now, and your odds of coming across a real Amperex are extremely low? I just happen to have some Amperex ECC88 (6DJ8) Bugle Boys. None of my E88CC (6922) have the Bugle Boy logo though. Here’s some pictures of what they look like: 6DJ8 ECC88 | tubemongerlib If you see a Telefunken that has the diamond on the bottom etched into the glass, not molded above the surrounding glass, it’s a fake. I’ve never seen one of the fakes, Have you? I have a few of the molded diamond on the bottom Telefunkens. Two of them are in my preamp right now. There are fakes of just about everything for sale nowdays. You just have to deal with honest sellers and be careful what you buy. Buying from Russia and China on ebay is not advisable unless you know how to differentiate fakes from the real thing. |
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