Serious Stereo

RE: Serious Stereo , posted on December 4, 2020 at 12:25:14
deathtube 667	I got an email from DF a few months ago detailing new SE tube amp designs. Beyond that, not a peep or any updates on his new magnetics. DT 667

RE: Serious Stereo , posted on December 4, 2020 at 12:44:47
lakerfan Audiophile Posts: 382 Joined: April 9, 2002	Just wondering

RE: Serious Stereo , posted on December 4, 2020 at 13:15:25
rivervalley817	ah! DT ... thought you fell off the earth or something! you all good? be well,

RE: Serious Stereo .... He's doing well ,,,, posted on December 5, 2020 at 08:14:45

drummerwill
Audiophile

Posts: 965
Location: St Louis Mo.
Joined: January 7, 2003

According to DrLowMu ... working on new amps .

Willie

RE: Serious Stereo .... His business is not however as there is no website ......... nt, posted on December 5, 2020 at 08:36:18
Cut-Throat Audiophile Posts: 18286 Location: Minneapolis - St.Paul Area Joined: September 2, 2000 Contributor Since: May 16, 2021	nt.

RE: Serious Stereo , posted on December 7, 2020 at 17:25:00

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

Hello, Guys!
I've been too busy to do everything
I wish to all at once. My Mom (101 years old & in fine shape
for her age) Is VERY mad at the morons who believe in
COVID CRAP that is promoted on T.V. instead of honoring HER
RIGHTS-- she is in a virtual prison-- a really nice
assisted living place with her own kitchen, etc., BUT no one
is allowed out or in. Yes- just like Gitmo, etc., but she's
innocent- a victim of T.V. ACTORS posing as medical "experts"--
yeah-- "experts" at forcing an entire nation's people to lose
their rights. Sad.
So, we talk with her thru the outside windows--- until
they run us off, of course.

As to news of S. Stereo, I didn't get a renew letter from
the website host, during all this so it got missed.

New developments: Lots of them-- I designed a 6E6P tetrode
directly connected to a KT-150 Class A amp. I really love it,
and it is now available, as are the 2A3 amps, as usual. New
design methods, devised for the KT-150, were applied to the 2A3 amps as well.
My apologies for the disappearing act-- I sort of got
swamped, shall we say, so I chose to help Mom and do new engineering
on new amps as time allowed.

-Dennis-

RE: Serious Stereo , posted on December 7, 2020 at 19:05:17
rivervalley817	please initiate a 'standalone' post if you wish to address a Forum you and I have nothing to to discuss rest assured that in the event you think that you know me it's a case of mistaken identity be well,

RE: Serious Stereo , posted on December 7, 2020 at 19:26:15

GEO
Audiophile

Posts: 4749
Joined: April 7, 2000
Contributor
Since: September 9, 2000

Take it elsewhere

here you go

RE: Serious Stereo , posted on December 7, 2020 at 19:41:31
rivervalley817	... well that was some weird sh*t regards,

"victim of T.V. ACTORS posing as medical "experts" ..............., posted on December 8, 2020 at 12:49:51
Cut-Throat Audiophile Posts: 18286 Location: Minneapolis - St.Paul Area Joined: September 2, 2000 Contributor Since: May 16, 2021	What channel do you watch? --- I didn't know QAnon had a TV Channel?

RE: Serious Stereo ... KT150, posted on December 8, 2020 at 19:03:19
deathtube 667	DF, Good to hear that you are still alive and well. How do you compare the new KT150 to the famous 2A3 amplifiers? DT 667

RE: Where once Dennis' work was greeted with skepticism by many..., posted on December 9, 2020 at 04:27:10
B. Scarpia	... It may now be taken as seriously as that of legends like Edison and Henry Ford. He joins the ranks of those "crackpot" inventors whose Looney Tunes views of the world did nothing to diminish their contributions to it. A shame J.P. Morgan is no longer around to invite him to dinner.

RE: "victim of T.V. ACTORS posing as medical "experts" ..............., posted on December 9, 2020 at 08:26:49
Grinnell Audiophile Posts: 709 Location: Front Range Joined: December 23, 2007	OANN TV

That must be it ! .........................nt, posted on December 9, 2020 at 10:58:30
Cut-Throat Audiophile Posts: 18286 Location: Minneapolis - St.Paul Area Joined: September 2, 2000 Contributor Since: May 16, 2021	nt

RE: Serious Stereo ... KT150, posted on December 9, 2020 at 10:58:36

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

Hi there!
This is just my opinion-- based on
about 7 months of listening, and careful
tuning-- that is, of bypass capacitors,
except for an added shunt stage on the
driver B+, and its associated caps.

The 2A3 amps-- to me-- are clean, dynamic,
and wideband as far as music goes. They have
limited power, so must be used with high-eff
speakers in order to reproduce low bass in a
powerful fashion. Voices are superb-- a forte
of a DHT output tube.

The 6E6P-KT/150 marriage is a different animal.
Spoiled rotten by the 2A3, I expended everything
I know or could invent to get the clarity and
stark realism of the 2A3 into the new amp.

I had to pay a lot of attention to the driver
power supply, I connected the 6E6 as triode, and
grounded its whisker wire. The power for the driver
has two shunt regulators, and several R.F. chokes.
Each has its own bank of capacitors with my usual
rather large inventory of bypassing. These capacitors--
the qualities of them, were critical.

It was also a great benefit to add a separate filament
transformer for the driver, and another to run the
TWO 5U4 that I used for main PS. Each 5U4 is connected
as a diode.

After all this, it came around to what I wanted.
It has the qualities of the 2A3, which was quite a
dogfight to get. It has much more power, and it still
has the multiple layers and depth of music that I
wanted from it.

In basic terms, sonically, it's a larger 2A3 amp with more
power. The output stage is run in ultralinear!

I really like this thing on all kinds of music.
Both are in stock and available now.

-Dennis-

RE: Serious Stereo ... KT150, posted on December 10, 2020 at 21:03:28

Tre'
Industry Professional

Posts: 17306
Location: So. Cal.
Joined: February 9, 2002

How many db of feedback are you using in the loop?

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

RE: Serious Stereo ... KT150, posted on December 11, 2020 at 22:31:57

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

There's no FBK loop-- no attempt was
made to apply FBK deliberately.

There could be a place or two where some
FBK might be considered natural in this setup--
but this amp doesn't need deliberate, added FBK.

That's in line with my past experiences with
push-pull loop negative FBK amps. I considered them
non-musical until I pulled the factory FBK loop
out, and then decided what to do with the gain
increase that that caused. Usually, all I had to
do was remove one amp stage, and clean the
thing up.

I don't mean to diss all feedback-- I did play
around with POSITIVE FBK. I could have fewer amp
stages and far better sound that way.

Like negative FBK, each circuit has a limit on
how much is appropriate.

-Dennis-

RE: Serious Stereo ... KT150, posted on December 12, 2020 at 06:02:00
dave slagle Manufacturer Posts: 5430 Location: NYC Joined: April 27, 2001	are the 6E6 and KY-150 triode connected? dave

RE: Serious Stereo ... KT150, posted on December 12, 2020 at 06:30:32
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	"In basic terms, sonically, it's a larger 2A3 amp with more power. The output stage is run in ultralinear!" Tre' Have Fun and Enjoy the Music "Still Working the Problem"

To be perfectly honest I can't help, posted on December 12, 2020 at 06:41:37

Tre'
Industry Professional

Posts: 17306
Location: So. Cal.
Joined: February 9, 2002

but see you as being anything but very hypocritical. You spent years telling all of us that we can't use the 300b. You said that the 300b was not linear enough and you said that all the old designers knew that. You when on and on about how the 300b was not linear enough and now you are using a beam power tube in ultralinear mode??? WTF

By comparison the 300b is super linear compared to the KT150 in ultralinear mode. The 300b is super linear compared to the KT150 even when in triode mode.

You are a hypocrite and a charlatan. Go away.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

RE: Serious Stereo ... KT150, posted on December 12, 2020 at 13:10:03
deathtube 667	KT150 operated in UL mode, the driver is triode connected per DF.

RE: To be perfectly honest I can't help, posted on December 12, 2020 at 19:05:05

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

The Single Plate 2A3 is superior to the 300B.

The reasons make sense: 2A3 has 1/2 the filament
voltage of the 300B-- an asset for sure. 2A3 is
set up with a different grid setup, designed around
the old RCA tube parameters-- which are very good.

One can visit JJ's website, and see that they
regard their 2A3-40 as superior to their 300B.
Both are 40 watt tubes, so the power is the same.

Both have the same glass jar, and both share
the same plate. Their 2A3-40 is still superior.

So, why not figure out WHY, instead of engage
in bad-mouthing me? I didn't design either, all
I did was use the best one!

The KT-150 is a newer design, and is getting
some great admiration. I designed an amp around it,
and it sounds VERY good. What's not to like?

As far as theoretical linearity goes, that, while
a useful consideration-- isn't the last word on why
you would use a certain tube, it's only a SMALL part
of the overall equation if you want real world
performance. Of course, you run it as linear as you
can find useful.

The MOST important things about any
vacuum tube are: (1) How much internal vacuum?
(2) How tight and solid is it mechanically. You
will be listening to every rattle and shake that
it has. THAT can be VERY non-linear! (3) What is
the element spacing? (4) What materials are used?
(5) Is the tube symmetrically built or not? If
it's not, your music will not be linear at all,
regardless of other factors. (6) What about the
cathode? Is it the same shape as the plate or not?
If it's also about the same size as the plate,
then that delivers more linear music-- the ability
of the tube to actually follow the music's groove
in real time.

Oh, yeah, almost forgot! Performance still rules.

-Dennis-

RE: Serious Stereo ... KT150, posted on December 12, 2020 at 19:13:01
tube wrangler Manufacturer Posts: 2484 Location: USA Joined: January 29, 2007	Hi, Dave! The 6E6P tetrode is triode connected, and the gold-plated internal whisker is grounded. The KT-150 is run in ultralinear mode, my reasoning being that my transformer builder, and the KT-150 tube are running the correct G2 and plate differentials-- that both designers are good engineers. I took a chance here, and I like what happened. No negative FBK is applied. -Dennis-

RE: To be perfectly honest I can't help, posted on December 12, 2020 at 20:02:16
rivervalley817	too funny! I was wondering why you even responded, thinking, 'man, doesn't he know that if you kick a skunk you'll have to throw away the boots?' you'll never get the stink off it so the other one is useless too best regards,

Dennis, you're not addressing the issue, posted on December 13, 2020 at 21:02:22

Tre'
Industry Professional

Posts: 17306
Location: So. Cal.
Joined: February 9, 2002

For years you said that we should not use the 300b because it was not as linear as the 2a3. You made fun of people for using the 300b.

I agree that the 2a3 is more linear than the 300b but that is not the point.

After all this time of you making fun of people for being so dumb to use a 300b (because it is not as linear as a 2a3), for you to use a beam power tube (that is no where near as linear as a 300b) is pure hypocrisy.

Please do not respond to this post unless you address this point.

If you have changed your mind and now it is OK for us to use power tubes that are not as linear as a 2a3 then just say so. Don't play games.

BTW when I say "linear" I am talking about how much harmonic distortion is created by the output because the grid lines along the load line are not evenly spaced.

The 2a3 is more linear than the 300b but not by much. The 300b is way more linear that a KT150 in ultralinear mode. The 300b is way more linear that a KT150 in triode mode.

You make fun of people that use the 300b, we should all laugh out loud at you using the KT150. Or better still, write you off as an old deaf crazy guy.

Truth be told, I wrote you off years ago.

Tre'

Have Fun and Enjoy the Music
"Still Working the Problem"

RE: the issue is getting a review in Stereophile ..., posted on December 14, 2020 at 14:28:23

deathtube 667

DF has been reviewed in 2016 by Herb Reichert of Stereophile.

If DF sends the KT150 amp to Herb Reichert, it would get a review.

https://www.stereophile.com/content/rmaf-2016-sunday-show-he

No, that is not the issue., posted on December 14, 2020 at 19:05:01
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	No, that is not the issue. If you told me over and over again to not eat bananas because they are bad for both of us, then you started eating bananas, I think you would owe me an explanation. That is the issue. Tre' Have Fun and Enjoy the Music "Still Working the Problem"

RE: No, that is not the issue., posted on December 15, 2020 at 08:14:25
kyle Audiophile Posts: 1839 Location: London Ontario Joined: September 29, 1999	Oh great, now you're trashing bananas. When will the madness end?

RE: the issue is getting a review in Stereophile ..., posted on December 15, 2020 at 08:21:40
kyle Audiophile Posts: 1839 Location: London Ontario Joined: September 29, 1999	That link is a RMAF show report, not a review. I was not able to find a review of SS in Stereophile. Could you post a link to an actual review?

My bad. You (and the bananas) have my apology. nt, posted on December 15, 2020 at 13:31:36
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	. Have Fun and Enjoy the Music "Still Working the Problem"

RE: My bad. You (and the bananas) have my apology. nt, posted on December 15, 2020 at 13:39:48
rivervalley817	as it turns out, they are an apt metaphor I approve! regards,

:-) nt, posted on December 15, 2020 at 15:57:57
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	. Have Fun and Enjoy the Music "Still Working the Problem"

BTW, Man without a country!, posted on December 15, 2020 at 16:37:24
gusser Audiophile Posts: 3649 Location: So. California Joined: September 6, 2006	LoMu just got booted off the Klipsch forum a few weeks ago. Audio Asylum DIY Audio Audio Karma HiFi Haven Klipsch Did I miss any?

RE: BTW, Man without a country!, posted on December 15, 2020 at 18:02:33
rivervalley817	that's bananas !! 'Did I miss any?' Dale Carnegie? (how to win friends and influence people without really trying [tm.]) he'll borrow a certain poster's login and blab his blargh betcha! with regards,

RE: BTW, Man without a country!, posted on December 15, 2020 at 19:47:53
GEO Audiophile Posts: 4749 Joined: April 7, 2000 Contributor Since: September 9, 2000	He was kicked off the Klipsch forum a couple of years ago also!!

RE: BTW, Man without a country!, posted on December 16, 2020 at 04:12:27
SETguy Audiophile Posts: 35 Joined: July 4, 2015	The guys I know on the Klipsch forum are celebrating. Medwin was apparently using the forum to promote a new power supply arrangement which he "invented" and wants to patent so he can sell his amps. A total joke imho. His incessant bashing of any amp design which isn't what he and Dennis like was out of control according to the guys.

RE: BTW, Man without a country!, posted on December 16, 2020 at 07:03:10
GEO Audiophile Posts: 4749 Joined: April 7, 2000 Contributor Since: September 9, 2000	All the girls tell him....it is them, not him that's the problem.... when they let him go.

RE: at least he tried ..., posted on December 16, 2020 at 07:32:35

deathtube 667

"LoMu just got booted off the Klipsch forum a few weeks ago."

Audio Asylum
DIY Audio
Audio Karma
HiFi Haven
Klipsch

"Did I miss any?"

I noticed a thread on the Klipsch forum announcing JDM's dismissal a short while ago.

In the past, I have suggested that he start a website or WordPress blog to promote his radical tube amp building ideas but that does not work for him apparently.

He needs an audience and devoted followers on moderated audio forums for some reason. And it always seems to end the same way.

I can't fault JDM for the effort but it needs to be directed to a venue that gives him total control of content and participation, IMO.

DT 667

You nailed it!, posted on December 16, 2020 at 14:48:11
gusser Audiophile Posts: 3649 Location: So. California Joined: September 6, 2006	But it's never going to change.

RE: never change ..., posted on December 16, 2020 at 18:20:27
deathtube 667	"But it's never going to change." If JDM wants to be a professional SE tube amp builder like his mentor, he just has to do it and not waste time on audio forums. Build the best amp possible and sell them online or whatever.

LOL! (nt), posted on December 16, 2020 at 18:35:00
gusser Audiophile Posts: 3649 Location: So. California Joined: September 6, 2006	x

"a professional SE tube amp builder like his mentor", posted on December 16, 2020 at 18:51:47
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	That is a pretty good joke. Tre' Have Fun and Enjoy the Music "Still Working the Problem"

RE: "a professional SE tube amp builder like his mentor", posted on December 17, 2020 at 03:20:06
deathtube 667	"That is a pretty good joke." JDM could capture a segment of what is a niche audio market. He could easily be his own marketing department and write promotional materials for a website. Online sales are available for anyone with an EBay account or similar. Of course, there is a wide gulf between vision and flesh.

RE: "a professional SE tube amp builder like his mentor", posted on December 17, 2020 at 09:21:24
kyle Audiophile Posts: 1839 Location: London Ontario Joined: September 29, 1999	Jeff has been promoting his ideas of how things should be since the 90s when he showed up in Sound Practices. I can remember seeing photos of him inside an Altec cabinet and an article with a short description of one of his "only way to achieve good sound" amps. It was a polar opposite of his current thinking. You have to admire his tenacity if not his ability.

RE: "a professional SE tube amp builder like his mentor", posted on December 17, 2020 at 11:27:18
deathtube 667	"You have to admire his tenacity if not his ability." JDM has a legion of followers per his gmail contact list. How he rebounds from the latest audio forum setback remains to be seen. I imagine he will be more determined than ever to find another audience for his low DCR SE tube amplifier gospels. Time will tell, sir.

RE: the point is ..., posted on December 17, 2020 at 11:31:07
deathtube 667	Herb Reichert knows Dennis Fraker. We are talking about the legendary Herb Reichert of Stereophile. Sounds like Herb is a big fan of Serious Stereo. That is good enough for me, sir.

RE: the point is ..., posted on December 17, 2020 at 12:25:49

kyle
Audiophile

Posts: 1839
Location: London Ontario
Joined: September 29, 1999

Herb has changed his tone over the years. These days, by his own admission, he only writes about thing he likes. He used to provide a more balanced writing perspective by also including equipment that didn't float his boat.

He was also a good source of information previously. I made a few amps with crossovers as part of the circuit after reading an article of his. They were quite good and a novel concept to me at the time.

He seems pleasant now instead of insightful.

RE: Herb Reichert ... power supplies, posted on December 17, 2020 at 14:41:43
deathtube 667	There was a video on Steve Guttenberg's YouTube channel that features Herb Reichert taking about tube amp power supplies. He said the DCR of the power supply filter was most important aspect of his Flesh and Blood 300B amplifier. I recall reading that JDM initiated Mr. Reichert into the low DCR tube hifi fraternity.

RE: Serious Stereo ... KT150, posted on December 18, 2020 at 05:37:29

Tre'
Industry Professional

Posts: 17306
Location: So. Cal.
Joined: February 9, 2002

With no feedback the harmonic distortion will be high but you certainly have the right to listen to whatever you want. It just seems to be a big departure from your previous stance.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

RE: at least he tried ..., posted on December 19, 2020 at 15:03:50

PakProtector
Audiophile

Posts: 12366
Joined: May 14, 2002

good ole lo mooo, what a classic case. used to be you'd find them happy with the audience they could get on a street corner standing on a soap box. There were some who needed more people...and they all seem to thrive off being told they are wrong, and can make no coherent explanation of why *they are the correct ones. not quite sure about the psychological basis for such behaviour, but it is remarkably consistent among a rather large group.

it does not matter what topic they attach themselves to, and for many the topic is a variable too. not happy unless they are arguing some fantasy.

dennis, OTOH is just a salesman. he has decided upon a set of marks, and is remarkably good at the language required to part them from their money. good for him...LOL

as pointed out by Tre' and several others, his fantasy language and his builds have nothing to do with each other. they are amps, they deliver something like what is put into them, only bigger. his justifications for this way of building use a vocabulary that appears to be consistent, but aren't.

Tucker once put his new car on display with invites for all to come see it and examine it closely. He set up across the street from an SAE meet. it took him *NO time at all to rope off the cars and keep knowlegable eyes quite far away. He was going to fail when he ran out of scrap Cord gearboxes anyway.
cheers,
Douglas

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

and we won...by a lot, posted on December 19, 2020 at 16:57:20
PakProtector Audiophile Posts: 12366 Joined: May 14, 2002	if there were anything to his 3.2685 parallel runs of some particular kind of wire, excluding the magnet wire his inductors are made from because it is 'in the magnetic field' we'd all have good amps by now. cheers, Douglas Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

RE: Dennis, you're not addressing the issue, posted on December 20, 2020 at 04:12:24

PakProtector
Audiophile

Posts: 12366
Joined: May 14, 2002

That would be 'write you off', not 'right you off'...LOL

Second, there was never supposed to be a cogent, legitimate argument presented by denis about 'linearity'. He is building amps he can justify to his marks. He is just a salesman, and he has discovered the language required to sell them.

Ultimately this is only harming the marks, and not by much( aside from now presiding over lighter wallets ). For such folk, I have some difficulty feeling sorry for them.

If I may, I would suggest letting him carry this out. None of his customers are going to appear and start waving $$$$$ under our noses in order to get an amp built...LOL We are just not going to throw Engineering away to pander to them.

As to his arguments concerning 'shape of the cathodes matching the plate', recall the barkhausen mitigation tactics applied to the TV sweeps. So far these tubes have been able to dunk over even the best of the 'audio' tubes, and *NOBODY* made their cathodes in that shape...LOL In another thread I took note of these new variants cathode power vs plate dissipation ratings. Not even close to the Sweeps, and remarkably far from ones like the 6CB5A which carry a 25W plate and have 2.5A/6.3V heaters...the new stuff is a joke.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

RE: Dennis, you're not addressing the issue, posted on December 22, 2020 at 23:12:24

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

Hmmmm... Plate resistance looks OK.

The 6E6P surely became part of a
great musical amp!

Ever look at doing it with a REAL triode?
After noting what the triode-connected 6E6P could do,
a very slight ghosting was observed. Still, it's
excellent overall and will get more attention.

Since it's not yet "perfect", I took a look at
the venerable 6BC4 R.F. triode. Similar
amp-factor-- fine for the KT-150.

We built a test set out of it, and are evaluating
whether, when the amp it is in is perfected, what
can it do?

Maybe good, but not the best? Don't yet know. It
will get all the best we can offer it, and we'll
see what happens.

It could happen that either myself, or even you
might like it. It's D.C. coupled, as usual.

The KT-150 is getting connected, a 2A3 or 300B would
require more amp-factor. (for a 2-stage amp).

Have fun Dudes! Always nice to see you're still
around! MERRY CHRISTMAS to all......

-Dennis-

RE: the issue is getting a review in Stereophile ..., posted on December 24, 2020 at 10:37:25
Ivan303 Audiophile Posts: 48887 Location: Cadiere d'azur FRANCE - Santa Fe, NM Joined: February 26, 2001	"Don't walk past that door!" I asked why not, and he replied, "Best sound at the show!" "How so?" I inquired. He smiled and said, "Presence!!!" What ya wanna bet the guy who grabbed Herb in the hallway was Jeff D. Medwin? First they came for the dumb-asses And I did not speak out Because I was not a dumb-ass

RE: Dennis, you're not addressing the issue, posted on December 24, 2020 at 12:48:13

Tre'
Industry Professional

Posts: 17306
Location: So. Cal.
Joined: February 9, 2002

"After noting what the triode-connected 6E6P could do,
a very slight ghosting was observed. Still, it's
excellent overall and will get more attention.

Since it's not yet "perfect", I took a look at
the venerable 6BC4 R.F. triode. Similar
amp-factor-- fine for the KT-150.

We built a test set out of it, and are evaluating
whether, when the amp it is in is perfected, what
can it do?

Maybe good, but not the best? Don't yet know."

Is this the same amplifier as the one you said "is now available"?

"I designed a 6E6P tetrode
directly connected to a KT-150 Class A amp. I really love it,
and it is now available"

It seems to me you are still in the development stages but yet you offer the amplifier for sale? What-ever.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

RE: Dennis, you're not addressing the issue, posted on December 25, 2020 at 00:21:45

tube wrangler
Manufacturer

Posts: 2484
Location: USA
Joined: January 29, 2007

What I referred to as "ghosting" is
prevalent in all amplifiers. I like to
minimize it, so I work at that.

I have the prototype pair here-- I listen to it,
and compare it to other amps that I have, or are borrowing.
Some are mine, others are various brands that I happen
to like a lot-- it's just personal preference,
but when I run across a really good thing that
is made by someone else, I really pay attention
to it's design, and if possible to find out, I
want to know the designer's musical objectives--
how did he achieve the excellent performance?

The next pair of these 6E6P/KT-150 amps is being
built now, as I had changed some simple things, and
felt that this amp can compete musically
with anything that's out there. It has also, for
months now, been VERY easy on tubes.

The prototype pair gets written-off as a development cost--
it will get everything that's proven good, and will
get the same guarantee as a new production model--
the first of which is underway at this time. The
price of the prototype is always discounted
because a part or two may have been changed as it
progressed. I regard this as not identical to a production
amp in which each solder joint is only done once. Prototypes
are, however, just as reliable as newer production,
and both sound very much alike, and are finished alike.

I don't choose tubes based on their theoretical
linearity. I consider that an important factor, but
only one of many factors.

Mostly, vacuum tubes sound
musically, according to how they're built, and what
materials they're built of. Get that choice wrong,
and no amount of perfect linear engineering can
ever make the thing sound like real music. That only
comes when the device is built right and is run right.

-Dennis-

RE: Dennis, you're not addressing the issue, posted on December 25, 2020 at 06:32:10

PakProtector
Audiophile

Posts: 12366
Joined: May 14, 2002

Tre', an open loop U-L amp is not without its charm. Likely due to its non-linearities. It is most certainly not a low-output Z rig either, which will also have a not small effect when matched up to jus' the 'Right' speaker.

Given what we know about how/why/what denis builds, this should come as no surprise at all.
cheers,
Douglas

Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

RE: Dennis, you're not addressing the issue, posted on December 25, 2020 at 07:02:13
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	No surprise. I just want everyone to note Dennis' inconsistencies. Tre' Have Fun and Enjoy the Music "Still Working the Problem"

Why is that so important to you?, posted on December 25, 2020 at 08:55:38
Ivan303 Audiophile Posts: 48887 Location: Cadiere d'azur FRANCE - Santa Fe, NM Joined: February 26, 2001	Is DF living in your head rent-free? First they came for the dumb-asses And I did not speak out Because I was not a dumb-ass

RE: Why is that so important to you?, posted on December 25, 2020 at 09:09:28
Tre' Industry Professional Posts: 17306 Location: So. Cal. Joined: February 9, 2002	I don't like lies or liars. Why am I answering your questions? Are you living in my head rent-free? Why are you asking me these questions? Am I living in your head rent-free? :-) Tre' Have Fun and Enjoy the Music "Still Working the Problem"

RE: Dennis, you're not addressing the issue, posted on December 26, 2020 at 08:09:12
GEO Audiophile Posts: 4749 Joined: April 7, 2000 Contributor Since: September 9, 2000	Snake Oil.......

Hang in there., posted on December 27, 2020 at 20:43:54

gusser
Audiophile

Posts: 3649
Location: So. California
Joined: September 6, 2006

It's soon over for good.

LowMu has probably exhausted all the respectable audio forums that exist. He could easily have his own WEB page but that lacks a built in audience. He would have to earn that just like all the other respected audio pages and YouTube channels. We know that's not going to happen.

Something is wrong at SS as well. Why drop the WEB site? How much can that cost a month? Even if you are developing a whole new line, why not keep the site alive promoting it?

No, the house of cards is finally collapsing.

RE: Dennis, you're not addressing the issue, posted on January 6, 2021 at 06:02:47
lakerfan Audiophile Posts: 382 Joined: April 9, 2002	WOW, lol........ I started this thread over a month ago, just wondering how this dude Dennis was doing and It's taken on a life of it's own. I hear ya. lol

RE: Serious Stereo , posted on February 9, 2021 at 20:09:52

PaulF70
Audiophile

Posts: 1427
Location: Midwest
Joined: June 30, 2006

"I wish to all at once. My Mom (101 years old & in fine shape
for her age) Is VERY mad at the morons who believe in
COVID CRAP that is promoted on T.V. instead of honoring HER
RIGHTS-- she is in a virtual prison-- a really nice
assisted living place with her own kitchen, etc., BUT no one
is allowed out or in. Yes- just like Gitmo, etc."

God bless your intelligent mother and you too, Dennis.

That is a woman with real wisdom.

SET Asylum

Serious Stereo

104.9.76.184