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Electra-Print.com High-Fidelity Audio Tranformers and Tube ...
https://electra-print.com/docs/ultra1.pdf
"Ultrapath" circuit is a variation of the standard trans- former coupled volt- age amplifier. As shown in Flyure I (p. 12), "Ultrapath, as the name implies, couples the primary return of the transformer back 10 the tube cathode through one capacitor. This, of course, Can only be done with transformer coupling and not With RC coupled stages.
Ultrapath, Parallel Feed and Western Electric
https://tempoelectric.com/Ultrapath_by_Lynn_Olson.pdf
the audio path. The best that can be done with a conventional SE cir-cuit is specify better-quality, non-polar caps, such as tradi-tional oil-filled caps, and use fixed bias. Ultrapath (B) Jack Elliano's Ultrapath circuit solves the problem in a remarkably simple and elegant way; replace the cathode-
ultrapath1 - Electra-Print.com High-Fidelity Audio ...
https://electra-print.com/docs/drd300b.pdf
OK, OK the Ultrapath output stage, why? (see "The Ultrapath Line Amp," issue #10, p. 1 1) Answer, this is about detail and the same theory here is even more important due to the higher value resistance on the output tube cathode from ground. Returning the signal path from the trans- former to the cathode instead of the power supply to the cathode
The Tube CAD Journal: E-Mail, UltraPath
https://www.tubecad.com/april_may2001/page41.html
From GlassWare the publishers of tube audio design software. The Tube CAD Journal: E-Mail, UltraPath Once the grid voltage is known, it is divided by the idle current and the result is the cathode resistor value.
Electra-Print.com The Ultrapath
https://www.electra-print.com/ultrapath.php
Ultrapath Line Amp. Since the original publication of this design we have made several improvements. This Ultrapath line amp is the very latest iteration giving even wider band width with the least distortion. We recommend building the power supply in a separate chassis for the lowest noise floor.
Ultrapath Moondog - The Klipsch Audio Community
https://community.klipsch.com/index.php?/topic/21877-ultrapath-moondog-so-far-working-great/
The DRD ultrapath amp. shown in the schematic I mentioned to you has an oil capacitor connected between the 2A3 cathode and OPT. The output tube is a 300B and B+ voltage is 700VDC. The capacitor used in the ultrapath connection (for lack of a better way to describe it)is rated for 600VDC, so this encourages my thinking that capacitor specs are …
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