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In Reply to: RE: Hogan 300B posted by lakerfan on November 02, 2009 at 19:09:28
Although I am sure it could be done, I would suggest you do not change the amp. I am lucky enough to have a number of John Hogan amps and know a little about his process for building them. I am not talking about technical issues of heater voltages or tube operating points, as I am not knowledgeable enough to comment on these. John’s process for building involved thinking about the circuit design and then tinkering the amp into existence. He would put it together, measure, tinker some more and then listen. Then he would go try a small change and go through the whole process again. Basically, he built his amps by ear. I happen to really like the resulting “Hogan” sound, focused on the midrange with a great combination of richness and detail. Also, I like the fact that his amps are sensitive to tube selection and as a tube roller, this makes them more fun for me. So I suggest you keep the amp as is but do some serious tube rolling to get the sound more to your liking. Between the multiple options for rectifiers, 6SN7’s, 26’s and 300B’s, you should be able to make some noticeable changes in the sound.
Note: I have reread my comment above and want to add to it. First, I wasn’t sure the word “tinkering” was really correct. Then I looked at synonyms as saw “fiddle, toy, mess and play” and thought tinker was just about right. Second, as I was reading, I remembered that at one point I emailed John, asking about the possibility of his making some changes to one of his amps that I had purchased from someone on Audiogon. His reply was, something like, “Yes that could be done, but I would have to change this, and that, and several other things. You know, it would be easier if I just built you a new amp.” So I had him build it. Sadly that is no longer an option, but I am happy to be able to enjoy the unique machines he left behind.
300B. A 45 often uses a 5k, so there is your biggest mismatch I think. Otherwise it is do-able. But I would also suggest keeping this one. And then building or buying a 45 amp.
To infinity and beyond!!!
In many ways, John was an artist. He had his own very distinctive style of amplifier building and you are lucky enough to own one of his creations. Treat it like you would a painting and leave the amplifier as it is.
As a suggestion, look around and purchase a 45 amp either by John or some other builder and then you can switch back and forth as you wish.
ray
Yea John was a special cat. I have yet to delete any of his e-mails from the few years he shared with us all.I will keep the amp as is. I'm interested in a 26/45 Hogan amp you guys !
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