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From: firstname.lastname@example.org (N. Thornton)
Subject: Re: Class B amplifiers: what are the large low-value resistors for?
Date: 21 Nov 2002 09:40:24 -0800
References: <email@example.com> <firstname.lastname@example.org> <3DKC9.467$Lq.email@example.com>
NNTP-Posting-Date: 21 Nov 2002 17:40:25 GMT
"Kevin Aylward" wrote in message news:...
> Phil Allison wrote:
> >> I meant *real amplifiers*:-)
> > ** You know what that is do you ? I doubt it.
> Oh...I think so.
Here we go...
> > It sounds like a right silly idea, probably
> >> because it was done 30 years ago when they didn't know any better.
> > ** No arrogance is beyond you is it ?
> It is a daft idea to have no bias (quad dumper and such like excluded).
> I am sorry if you consider this arrogance. If it were a good idea, it
> would be done more often. Essentially, it is never done. I agree that no
> bias saves the manual pot setting, but this is something better lived
> with than having the outputs cut-off.
There are always niches for these sort of things. My unbiased amp
certainly did the job nicely. But never would I expect you to agree.
> > I
> >> still remember using 100 watt transistor amp modules that used a
> >> driver transformer because the designers were too daft to realise
> >> that the product did not have any glass in it.
> > ** Unlike yourself no doubt who has too many glasses in him.
> Look, we all make silly mistakes in our lives, pretending otherwise is
> just as daft. Some tube designers of the past moving into transistor
> design simply could not get their act together. They took approaches
> which had no technical justification at the time.
I think you'll find there were reasons for what they did. Now parts
have very different costs, expectations are different, and technical
knowledge has moved on a whole lot from 30 years ago.
And it should be obvious that arguing with Phil is going to go
nowhere. If you don't agree with him you will be ad hominemmed and
non-sequitured to death. And if that doesn't work, who knows, you
might even be accused of something suspect. I wouldn't bother.
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