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In Reply to: RE: Best Sounding NOS 5Y3GT? Let's hear your opinion, please..... posted by Winston Smith on September 06, 2015 at 03:58:55
If you can hear a difference in rectifiers, either the rectifier is substandard or there is a problem in your power supply (design or faulty part). What follows the rectifier is an extreme low-pass filter. If the power supply and the rectifier are up to snuff ANY properly functioning rectifier should sound like any other.
One respondent's answer of a slow-warmup tube makes sense, not for sound quality but for tube life of the other tubes.
Winter's coming on, so feel free to flame.
Follow Ups:
And I wouldn't use a VR anyway. Not even in a SET. Anywhere, chokes are more important, as is storage.No, not even when the VR features above the chassis? Good place fro another nice BIG PSU cap, IMO.
VR's just do limit storage and thus limit what we can achieve in low-ripple and slam terms. And, they wear out. Not a good thing in a PSU.
Mind you, this all came about when I was doing a rethink/rebuild of two LEAK St20s right when GZ34 VRs were either rapid-failure shite or $$$$$$ NoS / used.
Put me off VRs - permanently.
And then, ta da! - we had that unused 5Volt filament winding - to go DC 6.3V with for the 6DJ8 input tube that replaced the 12AX7. Plenty of 6.3V filament current reserve - so could run 6CG7s and a FET CCS for LTP splitters, bye bye to two more 12AX7s on each amp. Out went all three 12AX7s.
Not apostasy, just common sense.
Add a thermistor to the primary into the PT and perhaps another one on the B+/HT secondary and you've got all the slow turn-on you'll need.
Reliable too.
Warmest
Tim Bailey
Skeptical Measurer & Audio Scrounger
Edits: 09/22/15 09/22/15 09/22/15
snip.... If you can hear a difference in rectifiers, either the rectifier is substandard or there is a problem in your power supply (design or faulty part).
So there is a difference then, in the sound of a "non"-substandard rectifier and a sub-standard rectifier. I assume by sub-standard, you mean a lesser build quality....whether it be the quality of the materials used, or assembly assembly, ....or maybe just used up? But....there's no difference in sound between the rectifiers that lay between "non"-substandard and sub-standard?
It's just good or bad sound? Black and white. Real beer or NA?
What follows the rectifier is an extreme low-pass filter. If the power supply and the rectifier are up to snuff ANY properly functioning rectifier should sound like any other.
"I can't compete with the dead". (Buck W. 2010)
No flames here. If you cannot hear differences in different rectifiers, am willing to say you do not use speakers with a sensitivity of 105 db
So, you Will NOT hear what some are saying.
I cannot hear the difference on my Quads, but I sure can on my modified Khorns.
The Mind has No Firewall~ U.S. Army War College.
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