"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

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 , 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

tony sayer wrote:

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


Yup, my illicit transmitter used a pair of 6V6s to amplitude modulate the
807s via the screen grids. The 807 anodes would sometimes glow dull red
under certain loading conditions. My pirate activity was point-point comms
with other pirates at/around 3MHz..we called it "J-band". This was before
the days of CB. Now, of course, I'm all legit and licensed. :-)

TonyL

In article , TonyL
scribeth thus
tony sayer wrote:

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


Yup, my illicit transmitter used a pair of 6V6s to amplitude modulate the
807s via the screen grids. The 807 anodes would sometimes glow dull red
under certain loading conditions. My pirate activity was point-point comms
with other pirates at/around 3MHz..we called it "J-band". This was before
the days of CB. Now, of course, I'm all legit and licensed. :-)

TonyL



Of course...

73's....
--
Tony Sayer