"Calif Bill" wrote in message
m...



And you forgot about the old Silicon Rectifiers.


You probably mean the old Selenium Rectifiers. The ones that stunk like
rotten eggs when they went bad.

Eisboch

On Aug 20, 2:03 am, "Eisboch" wrote:
"Calif Bill" wrote in message

m...



And you forgot about the old Silicon Rectifiers.

You probably mean the old Selenium Rectifiers. The ones that stunk like
rotten eggs when they went bad.

Eisboch

The ones that never were sealed good and even lengthy exposure to
humidity would eat them up?

A lot of battery chargers are still made with them today. They're not
the most efficient and are costly. When they'd go bad, my dad would
replace them with truck diodes. that would definitely hold till the
transformer went out...

On Tue, 19 Aug 2008 21:31:08 -0700, "Calif Bill"
wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Tue, 19 Aug 2008 13:42:06 -0400, "Eisboch"
wrote:


wrote in message
...
On Tue, 19 Aug 2008 12:50:49 -0400, "Eisboch"
wrote:


wrote in message
om...



Yes, and solid state pre amps and power amps are cleaner than tube
amps, as well. Clean and accurate reproduction is not necessarily the
objective with tube amplifiers for musical instrument amplification.

How the power is delivered to tubes can measurably affect things such
as rise time and decay. I'm not promising that you can actually hear
the difference, but purists will swear they can even if it is a
physiological impossibility.


If you think about it though, the "power" is really being delivered by
one
or more big filter capacitors. I never asked one if it cared how the
power
got there. At that point, DC is DC.

Eisboch


You would think so, wouldn't you! Bear in mind that a vacuum tube is a
mechanical structure and not all of the power is part of the signal
path. You have to account for uneven heat, vibration and other
anomalies that all go into what come out. The vagaries of a wimpy,
tube rectified power supply, with hand rolled paper caps should not be
underestimated.

Purists will also insist that point to point wiring sounds different
than circuit board construction. They may be right about that in some
cases. Sounds crazy, though...


I'll buy into the point to point wiring. An important critera used in
high
quality tube amps was to design the chassis so the signal wiring was as
far
away as possible from the power wiring. And, if you noted any funny
noises
or distortion, you could always re-route the wires.

As for the power supply, I am still not convinced a tube rectifier is
going
to sound (or display on an O'scope) any different than solid state, if
measured at the filter stage or any B+ test point. The audio amplifiers
certainly are different between solid state and tubes and that is readily
noticeable, even by people with tin ears.
But 300 volts DC?

Well, good points every one.

However, I can tell the difference between, say, my Mac 50s and a
similar power level solid state monoblock.

And I know others who can.

So there must be something to it.

Maybe it's all in our heads.

Mine's certainly empty enough. :)


Solid state did great things in the 1940's. Magnetic Amps controlled the
16" guns on the battleships. But Russia used microtubes / micro-valves for
the English, in their ICBMs and other rockets.


In a nuclear attack, the Russian vacuum tube guidance systems have a
clear advantage, as they would still work.

"Eisboch" wrote in message
...

"Calif Bill" wrote in message
m...



And you forgot about the old Silicon Rectifiers.


You probably mean the old Selenium Rectifiers. The ones that stunk like
rotten eggs when they went bad.

Eisboch

Rectumfryers is what they were commonly known as.

"Eisboch" wrote in message
...

"Short Wave Sportfishing" wrote in message
...


I think Larry remembered something and decided to take a powder for a
while.



I seriously believe he didn't know. He shot his mouth off, as usual,
speaking in general with another bizzare theory.

I don't think he meant it personally.


Eisboch

That's what I was thinking.
We used to hear that same type argument when the local police & fire dept
started hiring quotas of women, minorities etc.
There was always talk of standards being lowered..blah blah.
The bottom line with Tom's boy...he graduated at the top of his class and a
supervisor didn't know there was anything different until he noticed a
slight limp.

Don White wrote:
"Eisboch" wrote in message
...
"Short Wave Sportfishing" wrote in message
...

I think Larry remembered something and decided to take a powder for a
while.


I seriously believe he didn't know. He shot his mouth off, as usual,
speaking in general with another bizzare theory.

I don't think he meant it personally.


Eisboch

That's what I was thinking.
We used to hear that same type argument when the local police & fire dept
started hiring quotas of women, minorities etc.
There was always talk of standards being lowered..blah blah.
The bottom line with Tom's boy...he graduated at the top of his class and a
supervisor didn't know there was anything different until he noticed a
slight limp.




I've had my arguments with Larry over the years, and there have been
times that I've been too sharp with my criticism of him. But as I've
mellowed, I've decided Larry really is a good soul, a very decent
person, and, like me, an aging lecher. The fact that he believes in so
many conspiracy theories troubles me very little these days, considering
how many people still believe in GWB. :)

On Tue, 19 Aug 2008 20:44:49 GMT, Short Wave Sportfishing
wrote:

I have perfect pitch and for me, it's a curse.

In music, perfect pitch is when the banjo lands dead center in the
Dumpster without touching the sides.

Casady

On Wed, 20 Aug 2008 14:16:53 GMT, (Richard
Casady) wrote:

On Tue, 19 Aug 2008 20:44:49 GMT, Short Wave Sportfishing
wrote:

I have perfect pitch and for me, it's a curse.

In music, perfect pitch is when the banjo lands dead center in the
Dumpster without touching the sides.

Only if it lands on the bagpipes.

--Vic

On Wed, 20 Aug 2008 03:00:26 -0400, "Eisboch"
wrote:


"Short Wave Sportfishing" wrote in message
.. .


I think Larry remembered something and decided to take a powder for a
while.

I seriously believe he didn't know. He shot his mouth off, as usual,
speaking in general with another bizzare theory.

I don't think he meant it personally.

Probably, but a while back, I asked him if he knew somebody in the
middle of a thread and he disappeared for two months. Never did get
an answer.

That's what I was relating to - something that happened on the ham
bands a long time ago.

"Short Wave Sportfishing" wrote in message
...
On Wed, 20 Aug 2008 03:00:26 -0400, "Eisboch"
wrote:


"Short Wave Sportfishing" wrote in message
. ..


I think Larry remembered something and decided to take a powder for a
while.

I seriously believe he didn't know. He shot his mouth off, as usual,
speaking in general with another bizzare theory.

I don't think he meant it personally.

Probably, but a while back, I asked him if he knew somebody in the
middle of a thread and he disappeared for two months. Never did get
an answer.

That's what I was relating to - something that happened on the ham
bands a long time ago.


I am not sure all Larry's tubes are securely inserted in their sockets.

Eisboch