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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: RE: Not a Factor ...... posted by Garg0yle on December 5, 2014 at 16:00:28:
" Does the Rp of the 12AX7 limit the bandwidth in your application? "Only if you are able to think conventionally !! But in REALITY :
Not really, if you consider that the 12AX7 is just ONE part of a totally optimized amp we execute in modern times.
The 2A3 is very EASY to drive in a Direct Couple !! And of course, we have an actual, not theoretical, historical record of this : 1947 used a mu of 100 high Rp tube ( 6SF5 - Lipman and Robin, later "FI" amps ) as did the DC amps of Isamu Asano ( 2A6 at 0.43mA.) and Nobukazu Shishido ( 12AX7 at 1 mA. ). About 25% of the DIY Japanese amps were L-W variants, according to Jean Hiraga if I recall it properly.
If you wanna do it on a "proof by listening" , we have on A.A., Smart845's SupaNova Type 45 DC amp review, which I helped him build. I can refer you to various amplifier reviews found on Dennis Fraker's "Serious Stereo" web site.
In late 2014, we are able to do it even better, new parts and technologies are applied - positively.
Jeff Medwin
Edits: 12/06/14
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Follow Ups
- RE: Not a Factor ...... - drlowmu 23:15:55 12/05/14 (0)
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