Advice: Amp building
 

"Andy Evans" wrote in message
oups.com...
The only person banging on about 'magical properties' in this group is
you....

Let's try an analogy to see if we can;t go a bit further than
"everything not substantiated in a double blind test (preferably
repeated) is magical and faith based"

Schumacher regularly tests out different motor and suspension tweaks in
his Ferrari. He gets back to the pits and says "this suspension mod is
clearly better"

What do the team do?
a) Dismiss this as magical and faith based and leave the car
unmodified, as it was worked out in theory on the drawing board?
b) Make a working assumption that Schumacher is right and use the mod
in the next race and then make a post-race evaluation?

Silly boy, they look at a stopwatch. In racing, lap times rule - the rest
is just opinion that is used in the hope that lap times can be improved.

Advice: Amp building
 

"Andy Evans" wrote in message
oups.com...

He will tell them how it felt. The telemetry will tell them how it
went. He will put up with an awful lot of feeling bad for a tenth of a
second a lap. That was a poorly thought-through analogy, I'm afraid -
from your point of view anyway.

Why?

Because in racing an objective result - who crosses the finish line first
racing within the rules, determines the outcome.

A car can feel great on the track, but if it is slow per the stopwatch, no
joy.

I'm not remotely interested in magic - I'm interested in what
works in practice,

What generally works best in audio is well-known - in electronics it
involves solid state.

even if you have to make a working assumption on the
basis of a mixture of factors including the opinion of someone who is
very familiar with the circumstances.

Whatever that means.

This is used legally in the shape of expert witnesses -

Whatever that means.

another analogy for you to chew on! Andy.

Note lame attempt to turn a lost argument back at the winner.

Andy, if you had any personal integrity, you'd admit to Don that he ate your
lunch. Again.

Advice: Amp building
 

"Eiron" wrote in message
...
Don Pearce wrote:

On Thu, 27 Jul 2006 13:37:22 +0100, Eiron wrote:


Andy Evans wrote:

The only person banging on about 'magical properties' in this group is
you....

Let's try an analogy to see if we can;t go a bit further than
"everything not substantiated in a double blind test (preferably
repeated) is magical and faith based"

Schumacher regularly tests out different motor and suspension tweaks in
his Ferrari. He gets back to the pits and says "this suspension mod is
clearly better"

What do the team do?
a) Dismiss this as magical and faith based and leave the car
unmodified, as it was worked out in theory on the drawing board?
b) Make a working assumption that Schumacher is right and use the mod
in the next race and then make a post-race evaluation?

c) Check his laptimes - if they are better, assume he was right....


He will tell them how it felt. The telemetry will tell them how it
went. He will put up with an awful lot of feeling bad for a tenth of a
second a lap. That was a poorly thought-through analogy, I'm afraid -
from your point of view anyway.

No, it was a good analogy.

It sucked because there is precious little subjective about winning a race.

Do you build the best (most accurate) amp or do you give
it some distortion and alter the frequency response, which the user may
prefer?

That audible, carefully tailored frequency response alterations may be
beneficial is well-known.

That audible nonlinear distortion is best avoided, is well known.

No joy in either place for SET fanciers as random FR differences due to
impedance curves cause no joy, except to people who knew what they wanted
before they heard a thing.

Advice: Amp building
 

"Andy Evans" wrote in message
ps.com...

c) Check his laptimes - if they are better, assume he was right....

But that assumption would be faith based, since you can't be sure what
to attribute the change to

Wrong on many levels.

One can easily see if a car is tight or loose and where, as it cruises the
track. Even on the television. Especially true if the TV is HD.

Some well-trained people can be sure enough about what to attribute the
change to, so that they more consistently win races, or at least get podium
or top-10 finishes. That is a big reason why some crew chiefs are far
better paid than others.

Advice: Amp building
 

"Keith G" wrote in message
...

"Arfa Daily" wrote



What is the theory behind an indirectly heated valve, having an inferior
performance to a directly heated one ? Not being contentious - just
interested ...

No idea about the *theory* but I have seen the phrase 'grey' (by
comparison) applied to the sound produced by indirectly heated valves.

Brown would be more accurate.

Advice: Amp building
 

Arny Krueger wrote:

Silly boy, they look at a stopwatch. In racing, lap times rule - the rest
is just opinion that is used in the hope that lap times can be improved.


Not if that lap time is at the expense of thrasing the tires so more
stops have to be made. Not sure how it is for nascar slot racing, but
the level of telemetry that a F1 car has these days is not just to
replace the chap with a stop watch.

--
Nick

Advice: Amp building
 

What generally works best in audio is well-known - in electronics it
involves solid state.

I'll ignore the usual wierdo stuff, but I'm not against the above. I've
just spent months with friends trying out different filament supplies
for DHTs - we're on our 6th solid state circuit to make those lovely
directly heated triodes sing. An example of co-operation, a word you
may have to look up in the dictionary.

Advice: Amp building
 

Some well-trained people can be sure enough about what to attribute the
change to

I'm glad you agree with me.

Advice: Amp building
 

"Andy Evans" wrote in message
ups.com...
What generally works best in audio is well-known - in electronics it
involves solid state.

I'll ignore the usual wierdo stuff, but I'm not against the above. I've
just spent months with friends trying out different filament supplies
for DHTs - we're on our 6th solid state circuit to make those lovely
directly heated triodes sing. An example of co-operation, a word you
may have to look up in the dictionary.




That'll be 'co-uperation' over there....

(Where they have Gard, some have jubs and most like to watch TV movies about
Cups and Rubbers.... ;-)

Advice: Amp building
 

"Arny Krueger" wrote in message
. ..

"Keith G" wrote in message
...

"Arfa Daily" wrote



What is the theory behind an indirectly heated valve, having an inferior
performance to a directly heated one ? Not being contentious - just
interested ...

No idea about the *theory* but I have seen the phrase 'grey' (by
comparison) applied to the sound produced by indirectly heated valves.

Brown would be more accurate.



Yuh, I think I see where you're coming frarm - kinda *warm, earthy and
natural sounding*...??

:-)