Hi, I am Asai of Hi Fi Do Record Shop. Now we are in the midst of summer after the rainy season. Summer is the season for enjoying the quiz. I would like to introduce to you this week the TELEFUNKEN 12AX7, which is the king of vacuum tubes in the modern time, as a quiz show. |
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Five models of the 12AX7 in line. But actually only one of these is the true TELEFUNKEN 12AX7 model. If you can find out which one is, you are a real expert. Now, which is the true one? I will let you know the answer after you look through the following photos. |
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The true one is shown in the left photo on top. It is the Pekenana in one of the four photos. Although you may think that only the logo is different from one another at first sight, the internal structure and the way in which each was made are completely different among the four tubes in fact. The tube in the left photo below has a completely different internal structure. Probably it was made in Europe. (There are many tubes with the same structure as this among the contemporary European tubes.) The two tubes in the right photo on top are completely the same, but the printing colors are different from each other in brown and white. (Perhaps the difference is made to give them a first-class appearance. I suppose these are also European tubes that are fairly new.) The tube in the right photo below may be considered as the true one at first sight, but the positions of holes on the plate shown in the photo are different. (The holes are apart up and down in the left photo on top, while the holes are in the center in the right photo below.) The tube in the right photo below is the so-called TELEFUNKEN without marking. It is one of those tubes in the TELEFUNKEN brand that another company was making after the acquisition. (The structure is different but the sound is quite similar to the true one.) |
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How was the quiz? Not so many of the true TELEFUNKEN tubes have been released in the market in fact. I am happy if this little information is helpful for you so that you will not be cheated. |