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Re: Tube/Valve Amp Noise

by Patrick Turner <info@[EMAIL PROTECTED] > Apr 25, 2008 at 10:03 AM

bassett wrote:
> 
> "Trevor Wilson" <trevor@[EMAIL PROTECTED]
> wrote in message
> news:67cp5jF2n8njcU1@[EMAIL PROTECTED]
> .
> >
> > **Let me re-state the situation:
> >
> > * Peter Stein is sup****ting and servicing products he manufactured. I
am
> > servicing and sup****ting ME and other products.
> > * There are others who service and sup****t ME products. Due to the
careful
> > matching of semiconductors in all ME products, servicing the output
stages
> > by anyone other than PS (or his appointed successor/s) is a real bad
idea.
> > * Supplying schematics to anyone calling themselves a 'tech', in the
case
> > of ME, may be a very bad idea. Techs who are unable to perform even
basic
> > fault-finding, can end up doing far more damage to the amplifier.
> > * In the case of most ME models, the output stages are modular in
format.
> > This makes removal and replacement a quick, simple exercise. Peter
Stein
> > (and his appointed successors) can effect service to those output
modules
> > and the modules posted back, safely, inexpensively and easily.
Freighting
> > amplifiers around the nation is not required. All that is required, is
a
> > competent tech.
> > * I have seen many ME amplifiers which have been worked on by
incompetent
> > techs. The result is not pretty, nor cheap to rectify.
> > * Poorly serviced ME amplifiers reflect badly on the product's
reputation.
> >
> > Trevor Wilson
> >
> One would have thought or at least hoped  that electronics' would have
> advanced, improved, or at the very least progressed to a point  where a
30
> year old design could be called  dated,  superseded or at the very last
> 'outmoded'   By modern technology, multi-layered  chips,  and modern
> manufacturing technique's

An amp is an amp.

It matters not how old the design is if the N&D remains low, bandwidth
wide,
and Rout low. 

ME as it is now, a one man coconut band, does not have the venture
capital
to do any major changes to the old design.

> 
> At what point  do  you decide that up-dating,  re-fitting, or simply
> replacing old components  for new ones, is beyond the scope of
transforming
> something into what you consider  expectable  or comparable to a modern
day
> design.  and at the very least on a par  with what is available today.

Never at any point. If there are parts for a number of old design ME
amps to be made,
then they are to be made, not discarded in favour of the alternative,
which is the impossibility
of making something entirely new.

Peter Stein does not want to waste a garage full of left over parts from
former glory days.

This is quite OK.

But we want manuals.

> 
> Or have you also updated  your Holden commodore, by removing the 
starting
> handle out the front of the radiator,  and while it might have been an
> advantage  in the late  fifties to have such a leg breaker,  we  now
have
> modern electronics' making  your starting handle obsolete.
> 
> In short  we get to the point  where a  30 year old design, is simply
that,
> nothing more nothing less,  Of  cause sup****ting something of that age
does
> have considerable advantages,  for one thing, nothing new needs to be
> learned, Old relics constantly breakdown,  so an income can be assured
in
> your retirement years.

If Stein sold 50 amps next year, and lives another 10 years, and 10 amps
need $1,000 worth 
of servicing within this time, then that's only $10,000 repair income
not including
the cost of replacement parts and other expenses.

This isn't much of an income worth making so many owners and techs very
angry 
because there are no ****ing manuals.


> 
> Of cause it could also be argued  that a modern day design,  would
simply
> not make it in this modern age, and there would simply be no need  to
start
> manufacturing  new models as   the dimini****ng market  and the
production
> costs would make anything new completely out of reach, price wise  to 
Jo
> Public, unless it was made in   China, Korea or Taiwan,  and for that to
> happen  schematic's would need to be supplied  to the factory of choice,
> with a undertaking that  Chinese laws would need to change  to protect
the
> Copyright's of such valuable do***ents

One could always shop for an amp at Bing Lee, where the costs for
an SS amp is 20dB cheaper than anything from ME, ie, 1/10 of the price.

Cheaper than repairing an ME amp.

But it should NOT be like this.

Manuals should be available.

Patrick Turner.




> 
>                                  bassett
 




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