Tyler Variax HD Workbench Patches
Started by Elantric, March 20, 2014, 09:35:52 AM
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QuoteLong Live Vacuum Tube AmpsMar 17, 2014 by Lou FrenzelCommentary on the long life of vacuum tubes.Vacuum tube amplifiers just won't go away. I am speaking more of audio vacuum tube amps than I am of microwave amps like magnetrons, klystrons, TWTs and the like. Most other audio gear is solid state so why are there still vacuum tube amps? My grandson asked me that recently and it was hard to explain this phenomenon. What I basically said is that vacuum tubes amps sound better than solid state amps, to some people. I had no way to follow up or demo this effect.I have actually compared solid state audio power amps to the vacuum tube equivalents several times and using the same speakers. (It seems to me that the speakers would have more of an effect on the sound than the type of amplifier.) I could discern a difference between the two. I do not have the words to describe the difference. It is akin to comparing wines in a tasting. There are words for that but they are also vague and subjective to be sure. So it is with audio sounds. I have actually heard people say they can tell the difference between two different sets of speaker cables and connectors. I still don't believe it.So are vacuum tubes amps better? I'm not sure. They do still sound very good and for me it also depends on the music being played. Guitar players almost universally favor vacuum tube amplifiers. There are certainly enough vacuum tube audio power amp manufacturers to support the niche. I ran across one called Frenzel Tube Amps in Texas. No relation to me. These guys build custom amps for audio systems and musicians. And there are a dozen or so other tube amp companies. Amazing.Not only that, I recently discovered a new book Building Valve Amplifiers, 2nd edition by Morgan Jones. It is a highly detailed book on the actual design and construction of tube amplifiers. Published by Newnes/Elsevier, the book covers planning, metalworking, wiring and testing. A real nitty gritty book for hobbyists and serious manufacturers. For example, the book details things like how to orient audio and power transformers to avoid problems of magnetic flux leakage from affecting other transformers or the tubes themselves. The test section is excellent. You may even learn where to find a loctal socket for a 7N7.Incidentally the book is a companion to the book Valve Amplifiers, 4th edition also by Morgan Jones and published by Newnes/Elsevier. This is a serious design book with details on audio circuit design, equations and related topics. A 4th edition means that the book has been around for a while and is being updated and there is a real market for it.Anyway, I no long have any tubes or tube equipment around. Very early in my career I worked as an engineer in industrial electronics and I recall that I could make almost anything I needed with a 12AU7, 12AX7 and/or a relay. The early germanium PNP 2N1305s did not cut it. Those days are gone for good. And even my ham gear is solid state although one can still buy RF power amps with multiple kinds of vacuum tubes. It is hard to beat them for power RF in the HF range. LDMOS amps are available too but more expensive. And I suspect we will see some GaN ham power amps at modest prices in the near future. But I am not betting on the demise of the vacuum tube.
Quote from: arkieboy on November 28, 2018, 04:29:38 AMWe've played loads more stuff in music shops, and you know what he's settled on? An Orange TH30H. Plugged in, played a chord, his face lit up. Sold.
Quote from: aliensporebomb on March 23, 2014, 06:25:57 AMI've been using my Mesa Studio Preamp for over 20 years here. It's got 4 12AX7 and 1 12AT7 and sounds quite wonderful the majority of the time. Really lovely.I've long wanted a rack poweramp to match it like the 20/20 or a 50/50. Someday.
Quote from: chrish on November 28, 2018, 08:44:41 AMDid you ever get the power amp to match the mesa preamp.From the mesa posted link."Over the years we have watched a digital parade of "me-too modeling toys" try to seduce you. But we chose an alternative approach to modeling ...it's called REALITY. "Of course, why not have it all.
Quote from: aliensporebomb on November 28, 2018, 09:13:54 AMNot as of yet. I've been looking for a clean example of one of the matching racked power amps to go with it. Not that I really need it because I'm not doing live gigs with my conventional rig of late, all my live gigs in the last half decade have been with my VG-setup. I should get something though!
Quote from: GeePeeAxe on November 29, 2018, 02:15:39 AMRegarding studio techniques:Almost every recording that hit the charts was made into tube preamps/compressors first, than mixed and put in the can (magnet tape or digital harddisk). I have read recently that even Abbey Road Studios used old Siemens or Telefunken tube compressors on almost every record that counts today to rock or pop classics.My choice of guitar tone:I am still fascinated by the sound of Larry Carlton, especially his bluesy lead tones. It was a shock for me to see (utube-video) that he used mostl times only 1 guitar and 1 Fender amp with the 5e3 circuit, maybe not with a stock speaker. These days I tweak my 3 alltube amps to sound similar. Of course: attenuators are almost always needed at home.Maybe we should start a separate topic about attenuators...
Quote from: GeePeeAxe on November 29, 2018, 10:39:18 AMOh yeah: Link Wray RUMBLE, a masterpiece of instrumental music!Did you know that it was indexed in most of Northamerican states? Music with no text, what is wrong?The explanation is to find in a documentary movie "Rumble The Indians Who Rocked The World".Whatch it and you will frown as hell, guaranteed.
Quote from: admin on November 28, 2018, 07:08:41 PM . . . . meanwhilehttps://reverb.com/news/8-famous-guitar-tones-that-were-recorded-straight-into-the-board