Home SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ SET Asylum ]
[ Alert Moderator ]

RE: Yeah, I get that- seen it in spades.

I think Ralph has a way to balance two
feedbacks against each other, cleaning up
the mess that is created by using only one NFBK .

(By doing NFB ALSO in the opposite direction, we balance-out
most of the unwanted aspects of a single NFB loop).

I like it better, but I still don't like it much because
it still truncates dynamics-- simply by lessening
amp sensitivity to "microsignal" information.

The 2-stage amp is made possible-- partially-- by
not using NFBK.

If a balanced NFBK system is employed, many desirable
items in music are restored. But if we do this, the NFBK
loops still reduce gain. When we do that, the gain must be
restored-- add another stage of amplification if you please.

Now, what do we have? GAIN restored. Microsignal musical
information further reduced by what?----- the extra stage AND the
NFBK loops.

Not too bad when driving a medium-eff speaker using several
watts from the amp.. Sterile (by comparison)
when driving a large surface area, high-eff model that is wired
with silver, and has a great crossover system..

That speaker will tell you that your amp is OK-- better than
most-- but in comparison it lacks quite a bit of life-- it's
got power, it's got bandwidth, it's got pretty good phase alignment.

But there's one thing-- in spite of all of it's "A" scores, that
earns it a "D" score when playing music. It doesn't sound ALIVE--
like music dancing in an actual real life listening area.

-Dennis-


This post is made possible by the generous support of people like you and our sponsors:
  Parts Connexion  

Follow Ups Full Thread
Follow Ups
FAQ

Post a Message!

 Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.

[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]