Driver to drive?

[Phil Allison]

"Jan Panteltje"

48KHz is the DAT tape rate.

It is also what is normally used in digital TV.
That means digital recordings from TV use 48KHz.

** Nonsense - DTV is all MP3 encoded.

There is no defined sampling rate.



...... Phil

 

[Phil Allison]

"Don Pearce Pommy Liar Extraordinaire

Just had a look at a few QSC schematics, and it is apparent that the
output transistors are biased - not quite to zero current, but certainly
a very low current.


** Wot absolute fucking drivel.

Only seeing a REAL example of a QSC amp allows one to tell what the bias
current setting is.

As it depends critically on the adjustment of a trim pot.


There are no trim pots on the three schematics I've looked at.

** Then you have NOT looked at any USA or MX or even the PL series amps.


AS IS 100% REQUIRED BY THE CONTEXT !!!



YOU VILE, LYING ASININE ASD FUCKED PILE OF POMMY EXCREMENT !!!






...... Phil

 

[Arny Krueger]

"Eeyore" <rabbitsfriendsandrelations@hotmail.com> wrote in
message news:48DA8D6B.A803C40A@hotmail.com

Arny Krueger wrote:

"Eeyore" wrote
Arny Krueger wrote:
"Eeyore" wrote
krw wrote:
rabbitsfriendsandrelations@hotmail.com says...

Your phrase "good enough for audio" does not inspire
confidence. I work in the professional / production
area of audio. 'Good enough' usually isn't for us.
Indeed, for a host of reasons I'd > also
probably want to transmit 24 bit audio. Some
customers might want 96 kHz sampling too.

Yes, I know you're a "professional" audiophool.

Just a professional.

But one with a pretty fair track record for hearing
urban myths like the crossover distortion that you
claim exists in some power amplifiers.

BECAUSE IT'S SO AUDIBLE IT STICKS OUT LIKE A SORE THUMB.

Everyplace but on test equipment, and in careful
listening tests.

It stands out like a sore thumb on test equipment too.
It's HIGHLY visible and occurs typically at critical
listening levels (around the 100mW - 1W area).

Yes, and when it doesn't happen, it is very clear that it isn't happening.

Let the record show that I have a number of QSC amps on
hand to test, have done so, and reported the results to
Graham on Usenet. He has no such resources at hand.

Uh ? I don't have access to it at the moment but my
measurements have been made on such amplifiers using AP
test Equipment - the industry standard and capable of
incredible resolution. I may also shortly get my hands on
a Prism Sound dScope 3.
http://ap.com/products/index.html
I personally love the Portable One to bits since it's so
intuitive and fast to use and totally self contained.
With System Ones you often had to turn off the PC monitor
to get accurate results.
http://www.prismsound.com/test_measure/products_subs/dscope/dscope_home.php

Short answer - Graham has no immediate practical experience with measuring
QSC amps, just like I said.

Your precious ABX testing guarantees only a 'lowest
common denominator' result.

Horsefeathers.

As I read how ABX testing works,

Short answer - Graham has no immediate practical experience with ABX, just
like I said.

If I say, you had a group
30 listeners and 3 were consistently about to determine A
from B and the other 27 couldn't, then you would say the
products were indistinguishable, i.e. discard the results
of the 3 that could determine a difference.

If you had a group of 30 well-chosen, well-trained listeners, then there
would be no such thing as "...30 listeners and 3 were consistently about to
determine A from B and the other 27 couldn't..."

That's what I mean by 'lowest common denominator'. All it
proves is that most people have crap hearing.

Nobody with a brain uses "most people" for critical listening tests.

For example, the Stereo Review amplifier tests published in 1989 were done
using about 20 people, some audiophiles, some audio engineers, some
production people, some musicans, etc. We had been working with them for up
to 14 years. Yes, we had worked with some of them since 1975.

The 20 listeners were picked from a group of about 100 people that we had
already done any number of tests with. These tests particular tests were
done by invitation. We simply didn't invite the people who really didn't
really care, couldn't really hear, or were likely to be disruptive.

If I have misunderstood these principles, my apologies.

It is worse than "misunderstood" Graham, you simply have no clue about ABX
tests are run or analyzed.

However I WILL NOT engage in futile discussion about
things *I* know I *can* hear.

All the audiophool golden ears say *exactly* the same thing. If you want to
put yourself above the crowd Graham, you have to behave better than the
crowd. Part of that is doing your homework. You've just explicitly admitted
that you haven't even cracked the book, let alone done your homework.
Passing grades go only to people with fresh, relevant, worked-out answers.

Some of my colleagues
recently used me as the 'professional ears' to track down
a curious hum that a studio mix engineer had reported but
they couldn't hear themselves. I eventually found it. It
was a slightly humming wall wart in the back of an
equipment rack. If it was much louder than 10 phons I'd
be surprised.

Good. Been there, done that many times. However there is no relevance
between this and properly-run ABX tests.

 

[Arny Krueger]

"John Larkin" <jjlarkin@highNOTlandTHIStechnologyPART.com>
wrote in message
news6skd4t6ro2j043hts99uqq8qrii7gvmfs@4ax.com

What is it about audio that makes people so angry and
profane? I thought music was supposed to make people
happy. Peace Train, All you Need is Love, stuff like that.

Since you haven't noticed, I guess its up to me to point it out to you.

This isn't a music listening session.

Is it because most of you guys can't afford decent test
equipment, so everything becomes subjective?

I have more highly sensitive audio test gear by accident then most people
have on purpose. I probably shouldn't admit this because it shows a certain
kind of carelessness.

And, as one of the people who developed some of the industry standard
subjective testing procedures that people are using effectively to this day,
I don't see anything wrong with basing opinions on properly-run subjective
tests.

 

[Phil Allison]

"Jan Panteltje"

48KHz is the DAT tape rate.

It is also what is normally used in digital TV.
That means digital recordings from TV use 48KHz.


** Nonsense - DTV is all MP3 encoded.

There is no defined sampling rate.



First it is mp2 encoded, and second most is 48KHz sampled.

** ROTFLMFAO !!

WOT COMPLETE BOLLOCKS !!!!!!!!!!


MP2 is a fucking VIDEO format - you MORON !!!!!!!!!!!

Wot a pathetic, ridiculous ASD fucked, wog IMBECILE !!!


Go DROP FUCKING DEAD

- NOW !!!!!!!!!!!!!!!!!!!!!!!!!!!



..... Phil

 

[Kris Krieger]

ggherold@gmail.com wrote in news:bc2da955-76b3-4b75-a878-406669a00886
@s50g2000hsb.googlegroups.com:

On Sep 24, 1:22 pm, Kris Krieger <m...@dowmuff.in> wrote:
Rich Grise <r...@example.net> wrote
innewsan.2008.09.23.23.48.53.373398
@example.net:





On Tue, 23 Sep 2008 20:11:22 +0000, Ben Jackson wrote:
On 2008-09-23, John Larkin <jjlar...
@highNOTlandTHIStechnologyPART.com

wrote:

You can get down to about 100 ps, 3 GHz or so, with Xacto knives and
copperclad. Kapton tape can be really helpful...

Are you crazy??  I can't afford kapton tape!  ;-)

But seriously, is there a supplier for kapton that's not $25-40/roll?

It depends on how much you want:
http://www.mcmaster.com/#catalog/114/3352
(scroll down a little)

Cheers!
Rich

Holy cow, that place sells everything...  I dunno qwhat the OP thinks,
but
for my part, Good link, thanks!- Hide quoted text -

- Show quoted text -

Holy cow, that place sells everything...

You haven't used McMaster -Carr. How do you survive?

Because I'm new to all of this

OTOH, a lot of the things I saw on their catalogue page would be useful in
a very wide variety of areas; good stuff.

One of the best
things about McC is their index! You don't appreciate it until you
try and find something in another catalog.

George

 

[Jon Slaughter]

What do you expect when you put con artists, thugs, and morons in office?
The only ones to blame are the voters and they deserve what happens. If your
going to vote for someone based on party, looks, personality, etc then you
deserve the consequences. You don't let a crack head run the pharmacy and if
your too stupid to understand that then thats your problem. (unfortunately
it makes it everyone's problem but I guess thats life. Rome didn't last
forever but much longer than the US will)

My only hope is that when we all hit the ground that all the people who
caused this mess will not walk away from it and those that do will learn
their lesson. I doubt it though and I'm sure the same shit will repeat
itself over and over throughout history in some form or fashion.

I think the problem you have is that your blaming the crook for being a
crook and for stealing your shit. Thats the easy thing to do but didn't stop
him from stealing your shit. It's all about responsiblity and we are just
at the point where it's about all gone... been in decline since the end of
WWII and if people were smart, which obviously they are not, they would have
done something about it in the 60's and 70's.

But of course it's human nature to do nothing while everything seems ok and
only try to solve the problem once there is no other choice(and almost
always too late). I call it the ostrich syndrome.

http://msfriendly.files.wordpress.com/2008/04/ostrich_head_in_ground_full.jpg
http://digiscape.files.wordpress.com/2008/06/head-in-sand.jpg
http://www.personneltoday.com/assets/getAsset.aspx?ItemID=4678
http://www.cartoonstock.com/lowres/vsh0254l.jpg

 

[Phil Allison]

"Don Pearce Congenital ASD fucked LIAR "

Just had a look at a few QSC schematics,

** WRONG ONES - you FUCKING IDIOT !!

In a conventionally biased amp there is a biasing transistor between the
two op bases which is thermally linked as closely as possible to the
output devices - this (to some extent) tracks the Vbe changes through a
slow bass cycle and maintains the bias point. In the QSC design,

** WRONG ONES - you FUCKING IDIOT !!





...... Phil

 

[Phil Allison]

"Eeysore Congenital MORON

Arny Krueger wrote:

If you had a group of 30 well-chosen, well-trained listeners, then there
would be no such thing as "...30 listeners and 3 were consistently about
to
determine A from B and the other 27 couldn't..."

And how exactly do you determine that ?

You just proved that ABX testing ignores those with the most sensitive or
highly
trained hearing

** What a total non- sequitur !!

As fucking usual from the Stevenson autistic LYING Criminal Nut Case.





..... Phil

 

[Phil Allison]

"Don Pearce Congenital ASD fucked LIAR "

Just had a look at a few QSC schematics,


** WRONG ONES - you FUCKING IDIOT !!


In a conventionally biased amp there is a biasing transistor between the
two op bases which is thermally linked as closely as possible to the
output devices - this (to some extent) tracks the Vbe changes through a
slow bass cycle and maintains the bias point. In the QSC design,


** WRONG ONES - you FUCKING IDIOT !!



The discussion has moved on.

** No it has not, you ridiculous pile of autistic lying shit.

You and GS are talking about completely different schematics.

ROTFL !!


WHAT A PAIR OF ASININE ASD FUCKED MORONS !!





..... Phil

 

[Phil Allison]

"Eeysore"


= Graham Stevenson = a CRIMINAL LIAR

and a RABID AUTISTIC NUT CASE


The loopy fucking pommy imbecile is on medication for mental issues

- but not nearly enough.





...... Phil

 

[Phil Allison]

"Eeysore"

Phil Allison wrote:

"Jan Panteltje"

48KHz is the DAT tape rate.

It is also what is normally used in digital TV.
That means digital recordings from TV use 48KHz.

** Nonsense - DTV is all MP3 encoded.

There is no defined sampling rate.

First it is mp2 encoded, and second most is 48KHz sampled.

** ROTFLMFAO !!

WOT COMPLETE BOLLOCKS !!!!!!!!!!

MP2 is a fucking VIDEO format - you MORON !!!!!!!!!!!


You're confusing it with MPEG-2 which also delivers audio in addition to
video.

** The audio is funking MP3 "perceptually compressed " shite.

So no defined bit rate exists.

YOU FUCKING STUPID ASS.





.......... Phil

 

[Phil Allison]

"Eeysore the Lunatic "

The classic QSC arrangement with grounded collectors has no qiescent
current in the output devices.

** Massive BLATANT LIE !!

You are ridiculous, stupid damn LIAR Stevenson.

You have it 100% incorrect.


** Five QSC MX series amps I have here RIGHT NOW prove you WRONG.

All have about 20 mA per output BJT at idle - more when hot.

I suppose you set them that way.

** That is they are - from the factory.

YOU are NOT in any position to know how QSC set the bias current.

YOU have no proof WHATEVER of your MAD & WRONG assertion.

Stevenson is completely INSANE with:

1. Congenital autism.

2. Massive narcissism.

3. Manic personality disorder.

He tells massive lies, thousands of them.

It's possible the MXs do have some quiescent

** He tells massive lies, thousands of them.

Stevenson is completely INSANE with:

1. Congenital autism.

2. Massive narcissism.

3. Manic personality disorder.

A TOTAL LIAR !!!!!!!!!!!!!!!!!!






...... Phil

 

[Phil Allison]

"Eeysore the Criminal Lunatic "

The classic QSC arrangement with grounded collectors has no qiescent
current in the output devices.

** Massive BLATANT LIE !!

FACT.

** But it is not fact.

And you have no proof.

Cos it is simply not true.

It can improve the THD performance

**Another blatant LIE !!

Stevenson is completely INSANE with:

1. Congenital autism.

2. Massive narcissism.

3. Manic personality disorder.

He tells massive lies, thousands of them.




...... Phil

 

[Phil Allison]

"Eeyore" = Graham Stevenson = a RABID NUT CASE

Phil Allison wrote:

** The audio is funking MP3 "perceptually compressed " shite.

We were talking about mp2.

** The sub topic was DTV audio

- you LYING ASD FUCKED PILE of POMMY SHIT !!





...... Phil

 

[Phil Allison]

"Eeyore = Graham Stevenson = CRIMINAL SCUM

** Five QSC MX series amps I have here RIGHT NOW prove you WRONG.

All have about 20 mA per output BJT at idle - more when hot.

I suppose you set them that way.

** That is as they are - from the factory.

The factory no longer makes them

** YOU raised the issue of the QSC USA and MX models.

" Anyone that can't hear the distortion of QSC USA or MX series must have
severely damaged hearing.

The classic QSC arrangement with grounded collectors has no quiescent
current in the output devices. "


So now you admit you have never even seen one !!!

YOU FUCKING LIAR !!

Get cancer and DIE you vile scumbag.

ASAP.



...... Phil

 

[Phil Allison]

"Eeysore the Criminal Lunatic "

The classic QSC arrangement with grounded collectors has no qiescent
current in the output devices.

** Massive BLATANT LIE !!

FACT.

** But it is not fact.

And you have no proof.

Cos it is simply not true.

It can improve the THD performance

**Another blatant LIE !!

YOU just told everyone how these QSC amps have audible crossover distortion.


Stevenson is a completely INSANE LIAR with:

1. Congenital autism.

2. Massive narcissism.

3. Manic personality disorder.


He tells MASSIVE lies, thousands of them.

He is telling MORE right now.





...... Phil

 

[Phil Allison]

"Jan Panteltje"



** Hey you WOG SHIT HEAD .

DTV = broadcast digital TV

It is all fucking MPEG encoded.

The BROADCAST digital audio signal has no defined bit rate.

YOU COLOSSAL FUCKING MORON !!!




...... Phil

 

[Phil Allison]

"Jan Panteltje"



** Hey, you STUPID WOG SHIT HEAD .

DTV = broadcast digital TV !!!

It is all fucking MPEG encoded.

The ** BROADCAST digital audio signal ** has no defined bit rate.



YOU COLOSSAL FUCKING ILLITERATE MORON !!!




...... Phil

 

[Phil Allison]

Eeysore the Criminal Lunatic "

The classic QSC arrangement with grounded collectors has no qiescent
current in the output devices.

** Massive BLATANT LIE !!

FACT.

** But it is not fact.

And you have no proof.

Cos it is simply not true.

It can improve the THD performance

** Another blatant LIE !!

YOU just told everyone how these QSC amps have audible crossover distortion
!!!!!!!!!!!!!!


Stevenson is a completely INSANE LIAR with:

1. Congenital autism.

2. Massive narcissism.

3. Manic personality disorder.



He tells MASSIVE lies, thousands of them.

He is telling MORE LIES right now.





...... Phil