"David Looser" wrote in message
...
"Trevor Wilson" wrote in message
...



Do you think most off the shelf amplifiers are designed to be driven
hard continuously,

Depends on what's meant by "hard and continuously". If you mean "full
rated power with a sine-wave" then no, most off-the-shelf domestic
amplifiers are not designed to be used that way and will overheat. Of
course by the time that happens the speakers will have long since
perished!

and if not, how is the sound affected?

**Yep and not at all. Unless it is utter crap, of course.


I still don't understand this 'all modern amplifiers sound the same'
thing - hence the question!

**Few people actually say such things. Amplifiers may sound different for
a variety of reasons. Mostly when they are presented with abnormal
operating requirements. Some amplifier cope better with being asked to
operate beyond what many designers consider 'normal'. Then there's these
quite silly SET amplifiers. They are deliberately designed to distort.


Oh but think of the advantages of SET amplifiers! Apart from all that 2nd
harmonic distortion adding "musicality", the endless fun that can be had
debating the sonic improvement that can be got by using different sorts of
filament supply etc. and the useful way they can remove unwanted weight
from your wallet; the *real* advantage is the status value, after all how
many other people use them? and don't they look pretty?

**No. They look silly. I was building and using them 40 years ago. They were
cheap crap then and they're expensive crap now.

[Remembers the time when I brushed my wrist against the top cap of an 807 -
Still have the scar]


--
Trevor Wilson
www.rageaudio.com.au

"Eeyore" wrote in message
...


bassett wrote:

"Eeyore" wrote
bassett wrote:
"Eeyore" wrote
TT wrote:
"Eeyore" wrote
Fleetie wrote:
"Phil Allison" wrote
"Eeysore = Graham Stevenson = Lying Criminal Charlatan

** You will not go back three posts - to one YOU
replied to.

You will not go back even one.

You REFUSE to read the one in front of you as well.

Go get cancer and die -

you CRIMINALLY INSANE POMMY MANIAC

...... Phil

Well, Graham?

Phil has thrown down the gauntlet.

Now what are you going to do? Are you going to remove him
from
usenet as you threatened?

He's back to the wishing fatal cancer on people that
outraged you
last time.

So, your move.

Valid comment. I'm absolutely tied up in stuff right now
though and
couldn't give a tinker's cuss about Phyllis.

Perhaps spend less time swapping abuse with Philthy and use
that time to get his account pulled. Only a thought to help
with your time management problem ;-)

FFS, I want to get Bwian pulled and now you want me to get Phyllis
burnt
at the stake too ?

Gimme a break !

Your the one running his mouth Graham,, nice to see your still
cross
posting..

'Fleetie' originated the cross-post. I hadn't noticed it.

You DO know how to work that out do you ? Woof Woof ?

Graham

I know how to work out most things, including you.

I had the lady from the RSPCA round the other day

. She's of the same opinion as me, about you.

All bluff and no bloody grunt.

bassett

I'm trembling in fear !


And so you should! A Bassett's bite is much worse than its bark. :P
Hush puppy, hush....

Trevor Wilson wrote:

[Remembers the time when I brushed my wrist against the top cap of an
807 - Still have the scar]


Hey, I have some 807scars! In my case the 807s were amplifying RF and not
audio.

TonyL

TonyL wrote:

Trevor Wilson wrote:

[Remembers the time when I brushed my wrist against the top cap of an
807 - Still have the scar]

Hey, I have some 807scars! In my case the 807s were amplifying RF and not
audio.

Still a lot of Volts. 700V DC was a typical WV wasn't it ?

I could tell you a tale or two as well.

Graham

Eeyore wrote:

Still a lot of Volts. 700V DC was a typical WV wasn't it ?

I could tell you a tale or two as well.


Max anode rating was 750 VDC ! 400V would be more typical. Most of my burns
were due to RF arcing from the resonant circuits following the 807 stage.
This was my world as a schoolboy:

http://home.clara.net/rod.beavon/807.htm

I still have a few oddments in the loft. Maybe even an original 807...

TonyL

In article , Jim Lesurf
scribeth thus
In article , tony sayer

wrote:
In article , Jim Lesurf
scribeth thus


Maybe I notice the drawbacks of FM more easily than yourself.


Maybe we have a better TX feed than you do;?..

Which gives you less ignition interference and level compression?

Not a problem here at home or in my car,

Odd that you don't notice the level compression on R3 when at home.


Yes I do but I do understand why they do this..

And I wonder why they don't do it on their digital platforms quite so
much but then again since when has engineering been the BBC's strong
point?..


As to ignition interference haven't hears that for years now!..

and the radio in that is
nothing special!..

The compression isn't the fault of the FM system as such, its more to do
with how the broadcaster sees it!..

You can also say that the level of data compression on DAB/DTTV isn't a
fault of the system as such, its more to do with how the broadcaster sees
it! :-)

Indeed..assisted by good old Ofcom;!...




Problem here is that 'regulation' aimed at keeping up quality has
essentially been abandoned by all and sundry, and the BBC have been
made to feel that they have to be 'popular' to 'justify' the fees.
Gresham's Law then comes into force with the results we have. In some
ways I'd say it was remarkable that the BBC have resisted this to the
extent they have given the commercial interests that would just as soon
have the BBC evaporate.


I don't see the BBC would have a problem if it dropped its silly ratings
war. I don't think the viewing public are quite as stupid as they think
and they should educate them anyway!..

But some of the critics of the BBC in our journalistic and political
classes *are* that stupid as it suits their agenda. The argument they shove
out is the weary one "how can you justify making everyone pay the fee if
you only make programmes a minority will view/hear?"

They rely on people resenting paying for anything at all, combined with
them not realising how output aimed at educating and informing can raise
standards and provide info which even those who don't watch/hear will find
affecting and informing the debate or environment around them. Good
programmes put out into the public domain information, etc, that then can
spread by other means to those who didn't see/hear the orginal programmes.

Alas, ideas like that aren't on the radar for critics who follow the line
that only having an 'audience' can justify the fees.

BTW If you haven't read it already, try reading "Flat Earth News" by Nick
Davies. It does a good job of exposing the way journalism, etc, have
essentially been dumbed down by the mentality of grocers and accountants
whose only interest is making a cash return. Including its effect upon the
BBC who are expected to 'compete' on a similar basis.



Grocers?, Do they still have them up your way;?..



--
Tony Sayer

In article , Dave Plowman (News)
scribeth thus
In article ,
tony sayer wrote:
I've experienced it and am at a loss to explain it. Sounds like
something in an analogue part of the chain to me. It's intermittent -
and no real pattern to it. I've heard it on live broadcasts which would
rule out a rogue play in device.

It could also be local to just one transmitter or group of transmitters.


Whatever make you think its an analogue component it the chain Dave
thats all digital now?..

It's not. Starting with the microphone...;-)

It sort of sounds like overload on an analogue circuit, not something I've
heard with a digits fault. But I'm willing to be educated. How would you
describe it? Incidentally, not noticed it during the last couple of days
despite being in all day with R4 on.


Perhaps they've had the man in...
--
Tony Sayer

In article , TonyL
scribeth thus
Trevor Wilson wrote:

[Remembers the time when I brushed my wrist against the top cap of an
807 - Still have the scar]


Hey, I have some 807scars! In my case the 807s were amplifying RF and not
audio.

TonyL



Yes!, used to be a Medium wave pirate station round these parts many
years ago used around Six of 'em in paralled..
--
Tony Sayer

In article , tony sayer

wrote:
In article , Jim Lesurf
scribeth thus


Odd that you don't notice the level compression on R3 when at home.


Yes I do but I do understand why they do this..

And I wonder why they don't do it on their digital platforms quite so
much but then again since when has engineering been the BBC's strong
point?..

Well, the most plausible engineering reason is that FM broadcasting is
generally limited to the order of 70-75dB dynamic range, and this falls
away steadily if you don't have a strong RF signal. Whereas digital can
reliably provide about 20dB more than that once you are above a relatively
low RF threashold power.

As to ignition interference haven't hears that for years now!..

Can't recall ever living anywhere where it wasn't audible on R3 FM.

BTW If you haven't read it already, try reading "Flat Earth News" by
Nick Davies. It does a good job of exposing the way journalism, etc,
have essentially been dumbed down by the mentality of grocers and
accountants whose only interest is making a cash return. Including its
effect upon the BBC who are expected to 'compete' on a similar basis.



Grocers?, Do they still have them up your way;?..

Yes. One in town. But I assume most of them have moved into jobs in the
'meeja'. :-)

Slainte,

Jim

--
Change 'noise' to 'jcgl' if you wish to email me.
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html
Audio Misc http://www.audiomisc.co.uk/index.html

In article , Jim Lesurf
scribeth thus
In article , tony sayer

wrote:
In article , Jim Lesurf
scribeth thus


Odd that you don't notice the level compression on R3 when at home.


Yes I do but I do understand why they do this..

And I wonder why they don't do it on their digital platforms quite so
much but then again since when has engineering been the BBC's strong
point?..

Well, the most plausible engineering reason is that FM broadcasting is
generally limited to the order of 70-75dB dynamic range, and this falls
away steadily if you don't have a strong RF signal. Whereas digital can
reliably provide about 20dB more than that once you are above a relatively
low RF threashold power.

Nay lad 'thas got that wrong, its done to "colour" the sound to give it
a "flavour" to make it have a "signature"

Think I'm having you on?, look up Orban and Ommnia...


As to ignition interference haven't hears that for years now!..

Can't recall ever living anywhere where it wasn't audible on R3 FM.

Perhaps they still have copper HT leads opp North..

BTW If you haven't read it already, try reading "Flat Earth News" by
Nick Davies. It does a good job of exposing the way journalism, etc,
have essentially been dumbed down by the mentality of grocers and
accountants whose only interest is making a cash return. Including its
effect upon the BBC who are expected to 'compete' on a similar basis.



Grocers?, Do they still have them up your way;?..

Yes. One in town. But I assume most of them have moved into jobs in the
'meeja'. :-)

Well we've got a new online one flogging Organic for less then the
supermarkets and they deliver and their spuds are just like yer dad used
to dig up in the back garden)..

Slainte,

Jim


--
Tony Sayer