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#1
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On 12/2/2013 12:58 PM, Tim Wescott wrote:
It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and time-challenged) to build one up from scratch. Are there, by any chance, kits out there? I'm not looking for nickel- cored transformers with solid silver windings, genuine paper caps rolled on the thighs of virgins, toobs dipped in LN2, and all that crap: I'm just looking for something that'll give the audio quality of a mid-range amplified speaker set, in a cabinet that shows off the fact that it all uses ancient technology to get the job done. Suggestions welcome. TIA Good for you! Nostalgia has its place in our hearts. Can 12AX7s and such still be ordered? I have an old 1964 GE Essential Characteristics of tubes data book. If you promise to actually build your amplifier(s) and it will assist you, I will send it to you free of charge. John |
#2
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On 12/2/2013 3:02 PM, John S wrote:
On 12/2/2013 12:58 PM, Tim Wescott wrote: It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and time-challenged) to build one up from scratch. Are there, by any chance, kits out there? I'm not looking for nickel- cored transformers with solid silver windings, genuine paper caps rolled on the thighs of virgins, toobs dipped in LN2, and all that crap: I'm just looking for something that'll give the audio quality of a mid-range amplified speaker set, in a cabinet that shows off the fact that it all uses ancient technology to get the job done. Suggestions welcome. TIA Good for you! Nostalgia has its place in our hearts. Can 12AX7s and such still be ordered? I have an old 1964 GE Essential Characteristics of tubes data book. If you promise to actually build your amplifier(s) and it will assist you, I will send it to you free of charge. John Well, somehow my brain elided the fact that you don't want to scratch build. So, my offer is probably worth nothing. Sorry. |
#3
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On Mon, 02 Dec 2013 15:13:52 -0600, John S wrote:
On 12/2/2013 3:02 PM, John S wrote: On 12/2/2013 12:58 PM, Tim Wescott wrote: It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and time-challenged) to build one up from scratch. Are there, by any chance, kits out there? I'm not looking for nickel- cored transformers with solid silver windings, genuine paper caps rolled on the thighs of virgins, toobs dipped in LN2, and all that crap: I'm just looking for something that'll give the audio quality of a mid-range amplified speaker set, in a cabinet that shows off the fact that it all uses ancient technology to get the job done. Suggestions welcome. TIA Good for you! Nostalgia has its place in our hearts. Can 12AX7s and such still be ordered? I have an old 1964 GE Essential Characteristics of tubes data book. If you promise to actually build your amplifier(s) and it will assist you, I will send it to you free of charge. John Well, somehow my brain elided the fact that you don't want to scratch build. So, my offer is probably worth nothing. Sorry. 'sokay, I appreciate the thought. I have tons of tubes and data, what I lack is decent output transformers and the will to do yet another design project. I may go that route, particularly now that someone's suggested a kit and I've taken a look at the price (!!!). -- Tim Wescott Wescott Design Services http://www.wescottdesign.com |
#4
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#6
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If you want a respectable, easy to build, low power tube amp kit, look
at the Velleman kits. They are well-designed and have good output transformers. For the most part, when you buy a tube amp, you are buying transformers and engineering. Everything else is of comparatively minimal cost and effect. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
#7
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Can 12AX7s and such still be ordered?
Yup. Tubes that are popular with musicians (for guitar amplifiers, etc.) are still in production in a few factories (China and Russia, mostly), and there's still an active trade in "new old stock" and "used and tested" tubes of these types. The 12AX7/12AU7 family are heavily used in guitar amps, and so remain available. I recently lucked into finding a big batch of tubes of various sorts at a garage/moving sale... got three boxes of used tubes, two emission-type tube testers, and some manuals and tube-data guides, for the "please take this away, I don't want to take it all to Arizona" price of $4. A friend of mine glanced at them, and identified several Telefunken 12AX7 tubes ("These are gold!"). I ended up selling a batch of seven of them (tested good on his fancy tester) on eBay for $145! Sorta hated to let them go, but none of my audio gear is glassFET-based and I figured that other people could make better use of them than I. |
#8
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On 12/2/2013 4:02 PM, John S wrote:
On 12/2/2013 12:58 PM, Tim Wescott wrote: It's winter, and the amplifier in my PC speakers just died. I think it'd be kinda cool to have a toob speaker amp, but I'm too lazy (and time-challenged) to build one up from scratch. Are there, by any chance, kits out there? I'm not looking for nickel- cored transformers with solid silver windings, genuine paper caps rolled on the thighs of virgins, toobs dipped in LN2, and all that crap: I'm just looking for something that'll give the audio quality of a mid-range amplified speaker set, in a cabinet that shows off the fact that it all uses ancient technology to get the job done. Suggestions welcome. TIA Good for you! Nostalgia has its place in our hearts. Can 12AX7s and such still be ordered? Yes, there are lots of tube types still in current manufacture, and many types are still available new old-stock. I have an old 1964 GE Essential Characteristics of tubes data book. If you promise to actually build your amplifier(s) and it will assist you, I will send it to you free of charge. John You want to have the Receiving Manual too, so you can check out the full data and curves: http://www.tubebooks.org/tubedata/RC30.pdf |
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