[GerryE123]

Hi:

I have heard or owned a number of single-ended 45, 2A3 and 300B amps. Of
these amps, I liked the 300B ones the least. With that in mind, I just
recently came across a website for a foreign amplifier manufacturer that has
some interesting thoughts about driving the 300B.

I would appreciate your comments about their ideas. Here's the exact text
from the manufacturers website (NOTE: I am copying it as-is, it loses a bit
in the translation):

What points we are interested in?

Perhaps there are so many 300B single ended amps that we could
not discern good ones from bad.

For its natural and mellow mid-range, 300B single ended amp
is loved so much but its anemic bass and weak high frequency
response drive out many tube amp enthusiast from entering in the
Single Ended World.

What are the problems?

Basically there has been no good driving force for 300B.
First, Western Electric's 91B circuit was improvised for
easy manufacturing (for delayed production of 86B) and higher gain for
a theater system.

It's driving tube 310B ( or 6SJ7 or 6SH7 ) is pentode, notorious for
its distortion (too sensitive of its screen grid condition ) and cotton
sugar bass response and too high internal impedance (about 100K?!!
bad frequency response in low and high spectrums).

Second, there are two stage driver circuit. Some use 6SN7 twin triodes
one triode for 1st stage and 2nd stage for driving stage. Alas! 6SN7
is not so powerful for 300B and it's high gain of two stage is not
suitable
for 300B power amps, so they sell them as integrated amps.
Its major defect come from capacitor coupling, which can transfer a few
percent of driving wattage to 300B grid, almost of its energy is
converted
into useless heat of 6SN7's plate resister.

There are also a power drive circuit using EL34 or 6V6 or we349A (triode
connection).

They are not really 'power' drive, why? They use big plate resistor for
EL34 about
10k? 20w, but it generates big heat only and could not drive 300B
sufficiently due
to the next coupling capacitor, in theory it transfers only few
percentage of its
power.

There are only two methods to consider.

First, there is interstage transformer coupling and then plate choke
drive method
(which will be discussed in our 300B integrated amplifier). A interstage
coupling
method is a ideal one for transferring driving power to 300B grid for
its full
operation.

Its driving wattage could be transferred about 93% (less some coil and
core loss of
interstage transformer). We need sufficient power to make 300B work of
its full
capacity.

You will be surprised to the difference between under driven operation
of 300B and
full driven one. But it is really difficult to get a good interstage
transformer.

There three points to check for interstage transformer.

1. Must be wide range. Minimum 20Hz - 20KHz FLAT at designated source
impedance.
2. Good response to 10KHz square wave for flexibility and musicality.
3. Low distortion at low frequencies.

What do you think? Thanks!

Gerry

[Patrick Turner]

GerryE123 wrote:

Hi:

I have heard or owned a number of single-ended 45, 2A3 and 300B amps. Of
these amps, I liked the 300B ones the least. With that in mind, I just
recently came across a website for a foreign amplifier manufacturer that has
some interesting thoughts about driving the 300B.

I would appreciate your comments about their ideas. Here's the exact text
from the manufacturers website (NOTE: I am copying it as-is, it loses a bit
in the translation):

What points we are interested in?

Perhaps there are so many 300B single ended amps that we could
not discern good ones from bad.

For its natural and mellow mid-range, 300B single ended amp
is loved so much but its anemic bass and weak high frequency
response drive out many tube amp enthusiast from entering in the
Single Ended World.

The bad ones lack a decent full range response, usually because of
a poor OPT, such as many used in ancient cinema amps.

Combined with a poor load and op conditions, sound wasn't wonderful.

But with decent OPT, the 300B or any other triode in SE mode is just
fine
and the the idea 300B amps and other triodes just cannot do bass,
midrange and treble
all simultaneously and as well as each other; ie, do any type of music,
is a complete myth,
ie, a pile of ideolgical bull****.

However, the performance from a single 300B is limited to what around 7
watts max can do.

It was designed and produced originally for theatre amps which powered
horns with
typical 100dB sensitivity, and without a full F range.

But most ordinary dynamic speakers in normal boxes are 90dB/W/M,
and you cannot expect the same dynamics as you would get if you had a
horn speaker.

With today's low sensitivity, you'd need multiple parallel tubes.

THEN there is never going to be a problem with dynamics and people
bashing
huge drums and so on.

Try a 7 watt transistor amp. They will flounder just like a lone 300B
if you drive it beyond its capability, which so many people do
when making a silly comparison.

I just auditioned a pair of 845 in parallel for 60W max.

Utterly no clipping, oddles of bass and treble, and the OPT
allows 8Hz to 50kHz, -3dB points, even without NFB.

300B will do just the same!!!




What are the problems?

Basically there has been no good driving force for 300B.
First, Western Electric's 91B circuit was improvised for
easy manufacturing (for delayed production of 86B) and higher gain for
a theater system.

It's driving tube 310B ( or 6SJ7 or 6SH7 ) is pentode, notorious for
its distortion (too sensitive of its screen grid condition ) and cotton
sugar bass response and too high internal impedance (about 100K?!!
bad frequency response in low and high spectrums).

Forget the old ancient ways of driving 300B, 845, 2A3, et all.

Use a 6SN7 with both triodes paralleled.
Have Ea = 250V at least, and Iadc for the two triodes totalling 8mA at
least.
Have a dc carrying resistance of 20k and a 70H choke in series to the B+
of 520V approx.
As F rises, the L ensures the 6SN7 does not have to work hard
putting AC power into the anode feed resistance.
The reactive properties of the choke are isolated from the anodes
because of the 20k.
The 300B being driven should be cap coupled to the driver anodes and
should be cathode biased in the normal way
with R&C, with C 330uF. Bias R should be around 220k, which will be
the
lowest load the 'SN7 has to drive when ZL is high in the mid F.

Since the load is so high compared to the low Ra of the 'SN7 = about 5k,
you'll get a wide Vswing,
at very low THD.



Second, there are two stage driver circuit. Some use 6SN7 twin triodes
one triode for 1st stage and 2nd stage for driving stage. Alas! 6SN7
is not so powerful for 300B and it's high gain of two stage is not
suitable
for 300B power amps, so they sell them as integrated amps.
Its major defect come from capacitor coupling, which can transfer a few
percent of driving wattage to 300B grid, almost of its energy is
converted
into useless heat of 6SN7's plate resister.

Use a second paralleled 6SN7 for an input tube if you want sensitivity
and to be able to apply some loop FB, usually 10dB is plenty.


There are also a power drive circuit using EL34 or 6V6 or we349A (triode
connection).

They are not really 'power' drive, why? They use big plate resistor for
EL34 about
10k? 20w, but it generates big heat only and could not drive 300B
sufficiently due
to the next coupling capacitor, in theory it transfers only few
percentage of its
power.

There are only two methods to consider.

First, there is interstage transformer coupling and then plate choke
drive method
(which will be discussed in our 300B integrated amplifier). A interstage
coupling
method is a ideal one for transferring driving power to 300B grid for
its full
operation.

The driving "power" is negligible, because there isn't any grid current
in 300B operation.
You just need a linear voltage source with low Ra to overcome Miller C.

Se above about combined L&R to get dc supply.

Interstage trannies are very difficult to make with 8Hz to 60kHz BW.

The usually don't allow loop NFB because of te phase shift of the Cshunt
and Lp.


Its driving wattage could be transferred about 93% (less some coil and
core loss of
interstage transformer). We need sufficient power to make 300B work of
its full
capacity.

You will be surprised to the difference between under driven operation
of 300B and
full driven one. But it is really difficult to get a good interstage
transformer.

We all know that....

There three points to check for interstage transformer.

1. Must be wide range. Minimum 20Hz - 20KHz FLAT at designated source
impedance.
2. Good response to 10KHz square wave for flexibility and musicality.
3. Low distortion at low frequencies.

What do you think? Thanks!

The whole business of an IST is difficult.

The parafeed I mentioned above is the best I have used,
wide BW, with slight shelving of response at LF and HF,
and no added iron cause distortions at any F.

One can also use a µ-follower which also works well,
or use a pentode for the dc anode supply with extremely high AC
impedance.

I like the parafeed choke plus R method because it works, and sounds
well,
and has electronic simplicity of elements, even though
you would need a choke with 25mm square core section and have
7,000 turns of fine wire, and just the right gap size.

There is one other way, just make a B+ suply at say +750V, and have the
anode
dc supply resistance for 8mA to be about 70k, well rated for power, made
up of
3 x series R of about 22k each, so the R won't suffer over voltage.
The higher R load will be more easily driven then 20k.

I have used EL84 in triode which is the best IMHO, because
it has gain = 18 when loaded with choke + RL, and with Ia = 15mA,
Ea = 300V, with supply voltage about 500. R would be approx 12k,
and choke = 50H.
Ra will be about 2k2, or equal to about 5 x 1/2 6SN7 triodes paralelled.

An input tube is still needed, so use a 6CG7.

I have 3 x EL84 in parallel to drive the 845, which needs 127vrms max.
The 3 x '84 can produce 160Vrms at 2% THD with parafeed, and at 127Vrms
THD is about 1.4%
At normal listening levels they make about 20Vrms, with THD less than
0.4%,
all of which naturally cancels output tube THD because its all mainly
2H,
so all listening can be done with THD 0.05%, even with only 8dB loop
FB.


There are several very good ways to build triode amps.

Use the brains and the soldering to find out.

Buy as much good iron from Sowter or Lundahl or someone else as you can
afford.

Don't be afraid of global NFB. Its not a monster, but a technique
to allow the beauty of the music pass without the added artifacts to
spoil anything,
and mainly to ensure the output resistance of the amp gives good control
over speakers because they all have been designed to be driven by a
voltage source 1 ohm.

My experience with NFB is positive, but many dislike global NFB around
triode amps
and its often because they have no clue how to make sure the amp remains
stable
under any load condition.

I have heard audiophiles say after I have demonstrated my SE amps that
"This proves NFB is OK around SE amps".

Patrick Turner.





Gerry

[BretLudwig]

The WE 91 was designed by professional but not audiophilically anal
engineers at a particular time for a particular purpose under a particular
set of conditions. For that purpose under those terms at that time it was a
competent, hardly earth-shakingly good, piece of gear.

Those conditions had about as much to do with "high fidelity" as a Fender
Champ or a Bell & Howell projector amp speaker.

The Oriental buyers of them want them because they provide virtual penis
enhancement amongst their circle of friends. It's that very simple.
Evolution drives penis size development: the penis must be large enough to
provide visual sign of status-the literal peckering order-so the high
status males copulate more frequently and with the better women, whilst
being not too big to actually fit in most vaginas or scare off potential
mates for fear of damage. Certain tribes in equatorial Africa, where
nakedness is common, have evolutionary pressure for large penis
development whereas in Asian society genital size was utterly unimportant
for millennia. Only with greater constant awareness of big Occidental and
African penises has this caused feelings of losing face amongst these
Asians.

To get back to electronics, the WE 91 was designed for use as a
projection booth monitor amplifier, using at any time one of the several
used spares kept on hand from rotating stock in the main, push-pull
amplifiers used in the cinema service. It did this adequately. No more.

At that time it was technically a violation of the license under which
tubes were sold to use regular entertainment radio tubes in cinema
playback gear or to use WE ERPI vended tubes in consumer service. WE had
cross licensing of patents under an agreement which prohibited this. Third
party independent phone equipment which used off the shelf receiving tubes
violated this license, giving WE an effective monopoly in the telco
market. That was a lucrative monopoly. To maintain its pretense-and actual
litigability-WE ERPI had to honor it "the other way", that locked WE tubes
into ERPI gear and everyone else's out so long as ERPI gear was on lease
from and maintained by ERPI. Consequently, even though WE tubes lacked
cost effectiveness once reliable commodity 45s, 2A3s and 50s came out,
they stayed with them.

--
Message posted using http://www.talkaboutaudio.com/group/rec.audio.tubes/
More information at http://www.talkaboutaudio.com/faq.html

[Patrick Turner]

BretLudwig wrote:

The WE 91 was designed by professional but not audiophilically anal
engineers at a particular time for a particular purpose under a particular
set of conditions. For that purpose under those terms at that time it was a
competent, hardly earth-shakingly good, piece of gear.

Those conditions had about as much to do with "high fidelity" as a Fender
Champ or a Bell & Howell projector amp speaker.

The Oriental buyers of them want them because they provide virtual penis
enhancement amongst their circle of friends. It's that very simple.
Evolution drives penis size development: the penis must be large enough to
provide visual sign of status-the literal peckering order-so the high
status males copulate more frequently and with the better women, whilst
being not too big to actually fit in most vaginas or scare off potential
mates for fear of damage. Certain tribes in equatorial Africa, where
nakedness is common, have evolutionary pressure for large penis
development whereas in Asian society genital size was utterly unimportant
for millennia. Only with greater constant awareness of big Occidental and
African penises has this caused feelings of losing face amongst these
Asians.

Absolute twaddle.
Size does NOT matter to most men or women, and large pricks are
rare, except when we visit news groups.

In fact, the guy with the little dick need only use it twice a night
to make up the size deficit.

The extra struggle he has to go to when trying to fill a huge fanny
and make himself ejac into a void which offers almost no friction never
slowed the evolution of a small prick.
When young, any male has no trouble inseminating females even if they
have
fannies like a camel and a face like a walrus.

Very many women don't like a big long dick that shoves the cervix up
against their tonsils.
AND they don't need a dick for pleasure; its their tiny little clitoris
that needs the long time caring tickle that really pleases them.
( Preferably in expensive hotels in exotic locations at your great
expense ).
They sure don't like the mucking about in the dark to fit rubber
doughnuts onto their dull witted well hung male partner to allow him to
ram in hard.

The guy with a big dick and no brains is like a brutal dumb animal with
a club.
Some guys with huge dicks are just that, and they have no redeeming
features.
They remain besotted with their own false self importance.
So its a huge dick attatched to a little man.
I will assure everyone that their **** stinks too.

African males with huge dicks have had a warrior culture of the past
where 1/2 the men were dead of battle wounds by age 25.
The same culture of force and death dominated male "socialising" in
just about all other races, asian, arab, and caucasian etc.
Just read a History of The British Isles, and you will read about
pools of blood, and many winning warriors had tiny dicks,
and were mightily unwelcome in women's beds because of their
brutality, and the stench of unwashed bodies, and complete
absense of any charm, normal common raping of all the village girls,
and presence of sexual or other diseases or any intent whatsover to
please a damn ****ing woman.

Many women would find a huge dick very erotic, but that's all.

And who cares if the warrior you are facing has a big dick?
It won't make him fight any better if its swinging around
in front of him; he might accidently cut it off with a sword.
100dB of unwanted genetic attenuation in just one swipe!

What matters is social status, wealth, and being a good hunter,
and knowing lotsa stuff, which meant being clever which meant a bigger
brain,
and this made more women willingly spread their legs with a smile.
So a man didn't need to be strong or fit to hold down a protesting
sheila while being inseminated against her will.
He could have a small dick, and the brain was responsible for his
success,
and his genes were more easily passed along.
Gorillas are huge animals, but small dicks.
Kinda peaceful beings most of the time.
Didn't need to even make the brain bigger, invent the wheel, or
gunpowder.
Didn't need to speak to females. They just lurched over towards males
eventually....

We as a species are racing towards a species end-event.
But how smart is that?



To get back to electronics, the WE 91 was designed for use as a
projection booth monitor amplifier, using at any time one of the several
used spares kept on hand from rotating stock in the main, push-pull
amplifiers used in the cinema service. It did this adequately. No more.

Yeah....

At that time it was technically a violation of the license under which
tubes were sold to use regular entertainment radio tubes in cinema
playback gear or to use WE ERPI vended tubes in consumer service. WE had
cross licensing of patents under an agreement which prohibited this. Third
party independent phone equipment which used off the shelf receiving tubes
violated this license, giving WE an effective monopoly in the telco
market. That was a lucrative monopoly. To maintain its pretense-and actual
litigability-WE ERPI had to honor it "the other way", that locked WE tubes
into ERPI gear and everyone else's out so long as ERPI gear was on lease
from and maintained by ERPI. Consequently, even though WE tubes lacked
cost effectiveness once reliable commodity 45s, 2A3s and 50s came out,
they stayed with them.

Yeah...

Patrick Turner.

--
Message posted using http://www.talkaboutaudio.com/group/rec.audio.tubes/
More information at http://www.talkaboutaudio.com/faq.html

[Nick Gorham]

GerryE123 wrote:
Hi:

I have heard or owned a number of single-ended 45, 2A3 and 300B amps. Of
these amps, I liked the 300B ones the least. With that in mind, I just
recently came across a website for a foreign amplifier manufacturer that has
some interesting thoughts about driving the 300B.

I would appreciate your comments about their ideas. Here's the exact text
from the manufacturers website (NOTE: I am copying it as-is, it loses a bit
in the translation):

What points we are interested in?

Perhaps there are so many 300B single ended amps that we could
not discern good ones from bad.

For its natural and mellow mid-range, 300B single ended amp
is loved so much but its anemic bass and weak high frequency
response drive out many tube amp enthusiast from entering in the
Single Ended World.

What are the problems?

Basically there has been no good driving force for 300B.
First, Western Electric's 91B circuit was improvised for
easy manufacturing (for delayed production of 86B) and higher gain for
a theater system.

Two drivers I have found work well for 300b.

1. c3g, running as a pantode with a VR tube regulated screen supply
works very well. d3a is also good.

2. 6n6p Aikido also works well. Best combination I found was a ecc40 as
voltage amp, then 6n6p aikido cap coupled to 300b grid.

If you like the idea of a interstage, the AE interstages are very good,
and drive 300bs nicely driven by something like a 45 or 6em7.

http://www.ae-europe.nl/uitgangstrafo_engels.htm

--
Nick

[Andy Evans]

Nice to see Nick mention ECC40 - lovely sounding tube.

Anyway - back to drivers for the 300b. We had a shootout at the London
Audiocircle and the clear winner was 10Y. Also good were 46 and 71A.
2a3 and 45 are possible - neutral sound but not quite as good as the
above.

As input tube the good ones were 26, 201A and again the 10Y.

In fact 10Y 10Y 300b is very, very good. All the above choices
sounded better than 6SN7 or any other indirectly heated tube.

We spent hours on these listening tests over several days. Speakers
were Jordan JX92S with ribbon tweeters. Front end was a valve DAC and/
or vinyl (Garrard 301 etc). Music was orchestral, jazz and female
vocals like Joni Mitchell.
Andy Evans

[BretLudwig]

Again, while human males and females are NOT totally universally adapted,
85% of males work well in 85% of females. The advantage of large penis
size, aside from success in the porn film industry (too modern and unusual
to be of evolutionary importance) is visual and mostly by directly acting
on the minds of other heterosexual males, by giving the bejingled
intergroup status, which THEN transfers to desireability amongst the
female herd.

The appeal to homosexual males is irrelevant evolutionarily. The direct
appeal to females is relevant only in the case of size queens, most of
whom are not especially loose in the cunnus, but have a psychological need
for being stuffed. It's a fairly irrelevant thing evolutionarily. As is the
case of the genuinely wide-****ed, who desire the specially huge men for
simple fit reasons. Today most of these women get "torqued down"
surgically because the same phenomenon also renders them fecally or
urinarily incontinent in many cases.

This is a little off subject, sorry....

--
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[Jon Yaeger]

in article ,
BretLudwig at wrote on 5/5/08 9:19 PM:

Again, while human males and females are NOT totally universally adapted,
85% of males work well in 85% of females. The advantage of large penis
size, aside from success in the porn film industry (too modern and unusual
to be of evolutionary importance) is visual and mostly by directly acting
on the minds of other heterosexual males, by giving the bejingled
intergroup status, which THEN transfers to desireability amongst the
female herd.

The appeal to homosexual males is irrelevant evolutionarily. The direct
appeal to females is relevant only in the case of size queens, most of
whom are not especially loose in the cunnus, but have a psychological need
for being stuffed. It's a fairly irrelevant thing evolutionarily. As is the
case of the genuinely wide-****ed, who desire the specially huge men for
simple fit reasons. Today most of these women get "torqued down"
surgically because the same phenomenon also renders them fecally or
urinarily incontinent in many cases.

This is a little off subject, sorry....

--
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More information at http://www.talkaboutaudio.com/faq.html



No, it's WAY off topic, Bret, and useless drivel, too. Why don't you join
Middiot at rec.audio.cesspool?

J

[Patrick Turner]

BretLudwig wrote:

Again, while human males and females are NOT totally universally adapted,
85% of males work well in 85% of females. The advantage of large penis
size, aside from success in the porn film industry (too modern and unusual
to be of evolutionary importance) is visual and mostly by directly acting
on the minds of other heterosexual males, by giving the bejingled
intergroup status, which THEN transfers to desireability amongst the
female herd.

The appeal to homosexual males is irrelevant evolutionarily. The direct
appeal to females is relevant only in the case of size queens, most of
whom are not especially loose in the cunnus, but have a psychological need
for being stuffed. It's a fairly irrelevant thing evolutionarily. As is the
case of the genuinely wide-****ed, who desire the specially huge men for
simple fit reasons. Today most of these women get "torqued down"
surgically because the same phenomenon also renders them fecally or
urinarily incontinent in many cases.

This is a little off subject, sorry....

I am not the slightest bit prudish and retain undiminished interest in
sexuality.

I am not so sure I can agree with your logic about genital sizes.

I've never met or had sex with a "torqued down" shiela.
despite repeated childbirth or none at all, the FANNY is
still an intersting thing and varies in size, taste, smell, cost and
availability and so does the person attatched to the darn thing.

Patrick Turner.

--
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[[email protected]]

On May 6, 2:32 am, Patrick Turner wrote:
BretLudwig wrote:

Again, while human males and females are NOT totally universally adapted,
85% of males work well in 85% of females. The advantage of large penis
size, aside from success in the porn film industry (too modern and unusual
to be of evolutionary importance) is visual and mostly by directly acting
on the minds of other heterosexual males, by giving the bejingled
intergroup status, which THEN transfers to desireability amongst the
female herd.

The appeal to homosexual males is irrelevant evolutionarily. The direct
appeal to females is relevant only in the case of size queens, most of
whom are not especially loose in the cunnus, but have a psychological need
for being stuffed. It's a fairly irrelevant thing evolutionarily. As is the
case of the genuinely wide-****ed, who desire the specially huge men for
simple fit reasons. Today most of these women get "torqued down"
surgically because the same phenomenon also renders them fecally or
urinarily incontinent in many cases.

This is a little off subject, sorry....

I am not the slightest bit prudish and retain undiminished interest in
sexuality.

I am not so sure I can agree with your logic about genital sizes.

I've never met or had sex with a "torqued down" shiela.
despite repeated childbirth or none at all, the FANNY is
still an intersting thing and varies in size, taste, smell, cost and
availability and so does the person attatched to the darn thing.

There is a biological condition in which women have outsized vaginas
and anuses. It's surgically fixable, it's rare, and it occurs most
frequently in populations in the Middle East such as Berbers, where
unfortunately getting it fixed is complicated by both poverty and the
fundamentalist Islamic attitudes and mores regarding medicine.

[Patrick Turner]

wrote:

On May 6, 2:32 am, Patrick Turner wrote:
BretLudwig wrote:

Again, while human males and females are NOT totally universally adapted,
85% of males work well in 85% of females. The advantage of large penis
size, aside from success in the porn film industry (too modern and unusual
to be of evolutionary importance) is visual and mostly by directly acting
on the minds of other heterosexual males, by giving the bejingled
intergroup status, which THEN transfers to desireability amongst the
female herd.

The appeal to homosexual males is irrelevant evolutionarily. The direct
appeal to females is relevant only in the case of size queens, most of
whom are not especially loose in the cunnus, but have a psychological need
for being stuffed. It's a fairly irrelevant thing evolutionarily. As is the
case of the genuinely wide-****ed, who desire the specially huge men for
simple fit reasons. Today most of these women get "torqued down"
surgically because the same phenomenon also renders them fecally or
urinarily incontinent in many cases.

This is a little off subject, sorry....

I am not the slightest bit prudish and retain undiminished interest in
sexuality.

I am not so sure I can agree with your logic about genital sizes.

I've never met or had sex with a "torqued down" shiela.
despite repeated childbirth or none at all, the FANNY is
still an intersting thing and varies in size, taste, smell, cost and
availability and so does the person attatched to the darn thing.

There is a biological condition in which women have outsized vaginas
and anuses. It's surgically fixable, it's rare, and it occurs most
frequently in populations in the Middle East such as Berbers, where
unfortunately getting it fixed is complicated by both poverty and the
fundamentalist Islamic attitudes and mores regarding medicine.

Well, I did say to expect major variations in the human genital
condition.
What might be normal to some because they were born with their
characeristics
is abnormal to others.
For centuries white westerners thought black skinned folks were
sub-normal,
just glorified animals, so no need to feel sorry for having a few black
slaves around.

Let's not discuss the mutilation of females to remove the clitoris
to calm them down and make them docile and and faithful.
This appalling practice is occuring here in Oz amoung migrants from
ME and African countries, and girls are turning up at hospitals
in a terrible condition of having been sewn up, with infections,
fistulas, etc. Fortunately something can be done to
help them, but they can't give them back their clitoris.

But cultural practices in far off countries ain't my own real concern
or been part of my own experience.
Western white caucasian women have been my concern.

I have found that western women have very little control over their
muscles of the lower parts, and to teach them control, I have suggested
to a few that
they try inserting a carrot while standing, legs lightly apart,
with pointy end first. This might slip out of most ladies
but when well trained, they can grip it well.
They laugh so much at first they just can't get through the first
learning.
They certainly need to exersize the lower muscles when they age because
they
become incontinent all too easily.
And when over 50 so many are quite alergic to any form of vigourous
exercize
including regular rythmic sex, or like me, riding 200km on a bicycle
each week, every week.

Thus trained, they can be led to using this empowerment
in bed to grip a man, instead of just lying there like a lazy sack of
porridge.
They will feel more pleasure and might even climax. Many don't of
course, over 50%,
from only penetration.
There are rather too many to who any suggestion of anything novel or
merely different cannot be made
without causing offence, and I have politely left them alone for some
other brainless man to have and to hold.
Its almost normal for many men to be strong and silent types.
Talking to shielas about anything emotional or about sex usually
ends in a row, hence men learn to shut up. Talking about money is also a
devil.
There is a thin line between teaching empowerment, and either ridiculing
a shiela
or abusing her.
I'd say only one in 10 really has any idea of how to give a good BJ.
They expect a man to climax after a minute, and they peck like a chook,
chomping
with the teeth, or don't suck.
Some really hate it, but they clutch our heads in extacy when we go down
on them.
Bedtime is a place where ppl ought to raise a sweat, but hey, its mostly
not the female who does.


When a man wants to marry, he must be careful.

He might look for a good housekeeper.

When he finds one, beware divorce, because she keeps the house.

One thing is for sure, the porno industry portrays
most sheilas as being 99% opposite to how they really are,
except for maybe 1 week when they are 25, and on a honeymoon,
with squillions of $$$$ being spent in an exotic romantic location.

I can see why the porno industry is profitable.

And I can see how rising house prices and cost of living prices
are lowering the birthrate, and how the availability of porn
is changing morals and men's expectations of women for the very worst.
Who's gonna DT you? Its quite the unmentionable.

We have swapped trying to be happy for trying to be rich.

People are expected to slave their guts out in a "growth economy".

What are we growing?

Where the heck are we going?



Patrick Turner.

[GerryE123]

"Patrick Turner" wrote in message
...
The whole business of an IST is difficult.

The parafeed I mentioned above is the best I have used,
wide BW, with slight shelving of response at LF and HF,
and no added iron cause distortions at any F.

One can also use a µ-follower which also works well,
or use a pentode for the dc anode supply with extremely high AC
impedance.

I like the parafeed choke plus R method because it works, and sounds
well,
and has electronic simplicity of elements, even though
you would need a choke with 25mm square core section and have
7,000 turns of fine wire, and just the right gap size.

A belated THANK YOU to Patrick (I was hoping you would respond) and everyone
else who replied! I know that interstage transformers are a well known
design option, I just thought it was interesting to read a manufacturers
deatiled explanation for using it as opposed to other specific choices.

Jim Hagerman is coming out with a new and unusual 2A3 amp. Here's a quote
from it's description:

"Distortion is exceedingly low, especially given the fact that no feedback
is used, thanks to the harmonic cancellation of the output stage, which
operates partially in both single-ended parallel and push-pull differential
modes. This balance results in SET-like musicality yet with PP control and
dynamics."

Here's the link to the manufacturers web page for the new amp:

http://www.haglabs.com/pa10.html

What do you think? Thanks.

Gerry

[Patrick Turner]

GerryE123 wrote:

"Patrick Turner" wrote in message
...
The whole business of an IST is difficult.

The parafeed I mentioned above is the best I have used,
wide BW, with slight shelving of response at LF and HF,
and no added iron cause distortions at any F.

One can also use a µ-follower which also works well,
or use a pentode for the dc anode supply with extremely high AC
impedance.

I like the parafeed choke plus R method because it works, and sounds
well,
and has electronic simplicity of elements, even though
you would need a choke with 25mm square core section and have
7,000 turns of fine wire, and just the right gap size.

A belated THANK YOU to Patrick (I was hoping you would respond) and everyone
else who replied! I know that interstage transformers are a well known
design option, I just thought it was interesting to read a manufacturers
deatiled explanation for using it as opposed to other specific choices.

Jim Hagerman is coming out with a new and unusual 2A3 amp. Here's a quote
from it's description:

"Distortion is exceedingly low, especially given the fact that no feedback
is used, thanks to the harmonic cancellation of the output stage, which
operates partially in both single-ended parallel and push-pull differential
modes. This balance results in SET-like musicality yet with PP control and
dynamics."

Here's the link to the manufacturers web page for the new amp:

http://www.haglabs.com/pa10.html

What do you think? Thanks.

Gerry

Sun Corp made an almost identical amp many years ago.
I repaired a pair last year.

The IST had a gap for the DC through the primary of the IST.

The above amp uses a CCS and cap couples the IST primary, which means
that
an un-gapped IST can be used, and if the core material is good, THD
should be lower
and BW wider because of fewer turns needed to get sufficient primary
inductance.

One could do the same with any SE output stage, but the CCS must come
from a voltage source
equal to about twice the Ea of the tube to allow the swing upwards of
anode signal.

So you'd have say 400V at 60mA floe in a CCS at idle, which is 24 watts,
and the same as the Pd of the tube.

So you never see the CC done like this for any SE amp.
A choke is used instead.

And the magnetic stored energy allows the positive rise in signal
voltage as the tube
is turned off by a negative goingf grid.

Its a case of turning something off and getting something more,
yet another thing that defies ordinary human common sense.

Patrick Turner.