|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
|
|
Tubes Asylum Questions about tubes and gear that glows. FAQ |
|
In Reply to: RE: RCA 5691 Vacuum Tube posted by Tre' on July 27, 2021 at 07:40:58:
Gosh! Heater is .3 amps in one, and
.6 amps in the other. Both need 6.3 volts.Now, if the filament supply is robust,
it will provide the 6.3 volts at either
load, so in a device that can (should)
provide 6.3 volts for either tube, then
no problem.When I compared the tubes to each other
(sonically), the 6SL7 filament voltage
was 6.4 V.A.C., the 5691 filament setup
was at 6.35 V.A.C., so I deduced that difference
not to be a problem. In any case, I was discussing the
sonic characteristics. If one is using an inferior filament
supply, it might not like a different load as you point out.Von Gaylord had also used those coin-base tubes in his amps.
The RCA 5691 was better than other brands of it.
This robust industrial tube had plenty of drive,
really good bass, and a clean mid-range, but it just
couldn't convey a musician's artistic intentions
like the designed-for-audio tube can.The large bases of the non-coin base tubes sonically
(mechanically) shunt-out the really good highs.The coin-based models do not have this DEFECTIVE BASE.
The coin-basers reproduce far more of the high
frequencies. Equipment that exhibits some distortion
in the highs will benefit from a tube-base that knocks-out
some of the H.F. musical information.-Dennis-
Edits: 08/12/21 08/12/21
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- RE: RCA 5691 Vacuum Tube - tube wrangler 22:12:58 08/12/21 (0)
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
