I am using a rather smart little Denon SS amp 'pre only' to drive various
valve power amps - giving instant confirmation/reaffirmation of my
preference for valves every time I do it!

This entails using the amp's 'Pre Outs' and switching Speakers A and B
*both* off.

Could someone confirm that this, at least, *unlikely* to harm the amp when
used thus for long periods (all day long, when it's not as hot as today) -
I'm *certain* it doesn't harm the amp, but there's always that little tiny
doubt nagging away!

(I don't want to burst the casework open with a build-up of sound pressure!!
:-)

On Thu, 29 Jun 2006 16:12:26 +0100, "Keith G"
wrote:



I am using a rather smart little Denon SS amp 'pre only' to drive various
valve power amps - giving instant confirmation/reaffirmation of my
preference for valves every time I do it!

This entails using the amp's 'Pre Outs' and switching Speakers A and B
*both* off.

Could someone confirm that this, at least, *unlikely* to harm the amp when
used thus for long periods (all day long, when it's not as hot as today) -
I'm *certain* it doesn't harm the amp, but there's always that little tiny
doubt nagging away!

(I don't want to burst the casework open with a build-up of sound pressure!!
:-)

When you say you switch both speakers off, do you mean you are leaving
the amps with open circuit outputs? As long as you aren't feeding any
sizeable signals through them, it won't do any harm.

You could always add a standby switch to the valve amps. This is a
switch to disconnect the HT line from the amp circuitry, leaving it
otherwise fully powered, with heaters on. It is a standard feature on
guitar amps.

d

--
Pearce Consulting
http://www.pearce.uk.com

"Don Pearce" wrote



When you say you switch both speakers off, do you mean you are leaving
the amps with open circuit outputs?


That's really what I don't know - there's two buttons, one for Speakers A
and another for Speakers B. Pop them both out (toggle switches which allow
A, B, Both or None) and neither set of speakers would be working - as though
you were using the amp's headphone socket only, IYSWIM...??

As long as you aren't feeding any
sizeable signals through them, it won't do any harm.

You could always add a standby switch to the valve amps. This is a
switch to disconnect the HT line from the amp circuitry, leaving it
otherwise fully powered, with heaters on. It is a standard feature on
guitar amps.


Sure, but it isn't really the case here - the valve amps are only on when
they are being used, fed from the Denon's 'pre'. (Otherwise they wouldn't be
on at all.) It's whether or not there's any damage being done if the Denon's
power amp circuitry is cooking away *unused*....??

On Thu, 29 Jun 2006 16:35:50 +0100, "Keith G"
wrote:


"Don Pearce" wrote



When you say you switch both speakers off, do you mean you are leaving
the amps with open circuit outputs?


That's really what I don't know - there's two buttons, one for Speakers A
and another for Speakers B. Pop them both out (toggle switches which allow
A, B, Both or None) and neither set of speakers would be working - as though
you were using the amp's headphone socket only, IYSWIM...??

As long as you aren't feeding any
sizeable signals through them, it won't do any harm.

You could always add a standby switch to the valve amps. This is a
switch to disconnect the HT line from the amp circuitry, leaving it
otherwise fully powered, with heaters on. It is a standard feature on
guitar amps.


Sure, but it isn't really the case here - the valve amps are only on when
they are being used, fed from the Denon's 'pre'. (Otherwise they wouldn't be
on at all.) It's whether or not there's any damage being done if the Denon's
power amp circuitry is cooking away *unused*....??

Oh - I see. OK, no - the Denon won't give a toss about being left on
and unloaded.

d

--
Pearce Consulting
http://www.pearce.uk.com

"Don Pearce" wrote in message
...
On Thu, 29 Jun 2006 16:35:50 +0100, "Keith G"
wrote:


"Don Pearce" wrote



When you say you switch both speakers off, do you mean you are leaving
the amps with open circuit outputs?


That's really what I don't know - there's two buttons, one for Speakers A
and another for Speakers B. Pop them both out (toggle switches which allow
A, B, Both or None) and neither set of speakers would be working - as
though
you were using the amp's headphone socket only, IYSWIM...??

As long as you aren't feeding any
sizeable signals through them, it won't do any harm.

You could always add a standby switch to the valve amps. This is a
switch to disconnect the HT line from the amp circuitry, leaving it
otherwise fully powered, with heaters on. It is a standard feature on
guitar amps.


Sure, but it isn't really the case here - the valve amps are only on when
they are being used, fed from the Denon's 'pre'. (Otherwise they wouldn't
be
on at all.) It's whether or not there's any damage being done if the
Denon's
power amp circuitry is cooking away *unused*....??

Oh - I see. OK, no - the Denon won't give a toss about being left on
and unloaded.


OK - lovely, that's what I wanted to hear - it gets pretty warm for SS
gear!!

(At 200 nicker, we aren't talking the end of the world here but I am more
comfortable knowing that - thanks!! ;-)

"Keith Gutless Pommy Wonder ****"

"Don Pearce"


OK - lovely, that's what I wanted to hear



** Now I get it.

Keith G and Don Pearce are a pair of Pommy Bum Boys.

Which one is the Station Master and which the Station Mistress ???

What a hoot !!!





........ Phil

"Keith Gutless Wonder Lying Pommy **** "


I am using a rather smart little Denon SS amp 'pre only' to drive various
valve power amps - giving instant confirmation/reaffirmation of my
preference for valves every time I do it!


** ROTFL ......

Keith God Almighty Pommy ****wit reaffirms his innate, narcissistic love
for his own TINY cock EVERY time he sees an ECC83 valve.

Or an N gauge toy steam engine !!!!!!!!!

With his Station Masterbator's cap on ....






....... Phil

"Phil Allison" wrote in message
...

"Keith Gutless Wonder Lying Pommy **** "


I am using a rather smart little Denon SS amp 'pre only' to drive various
valve power amps - giving instant confirmation/reaffirmation of my
preference for valves every time I do it!


** ROTFL ......

Keith God Almighty Pommy ****wit reaffirms his innate, narcissistic love
for his own TINY cock EVERY time he sees an ECC83 valve.

Or an N gauge toy steam engine !!!!!!!!!

With his Station Masterbator's cap on ....



Look, lemme see if I can help you out a bit - I hate to see anyone writhing
about with so much *obvious* guilt - even a pheeble, phaecal phairy like
you!

If you you enjoy a bit of a 'tug' from time to time, you just hunker down
and go for it - I don't personally believe your parents, grandparents and
all your other ancestors (whatever species) *are* up there in Heaven, all
watching you do it!

(Now, does that help at all...?? :-)

"Keith G" wrote in message
...
::
:
: Look, lemme see if I can help you out a bit - I hate to
see anyone writhing
: about with so much *obvious* guilt - even a pheeble,
phaecal phairy like
: you!
:
: If you you enjoy a bit of a 'tug' from time to time, you
just hunker down
: and go for it - I don't personally believe your parents,
grandparents and
: all your other ancestors (whatever species) *are* up there
in Heaven, all
: watching you do it!
:
: (Now, does that help at all...?? :-)
:
Phithly here is also know by his friends(?) as Phellatio
Phil after his rumoured exploits with a lecturer which
apparently caused his sudden exit
from university. Obviously in the early seventies when
Philthy was told "The more you suck, the higher you get" he
was obviously naive to what a joint was ;-)

BTW as you will notice he suppresses his homosexual
tendencies and this is probably due to a staunch Catholic
upbringing and education. Believe it or not he even lives
directly opposite a Catholic church so right now our
keyboard hero is doing all this in full view of the church.

As I have previously stated this mere shadow of a human is
unmarried, has never been married, as far as anyone can
ascertain has never had a girlfriend, lives alone, has no
friends and has a fascination for al things in the "nether
regions" of the human male body. Mmmmm........ Yes folks
a classic repressive personality.

Cheers TT

In article ,
Keith G wrote:
I am using a rather smart little Denon SS amp 'pre only' to drive
various valve power amps - giving instant confirmation/reaffirmation of
my preference for valves every time I do it!

This entails using the amp's 'Pre Outs' and switching Speakers A and B
*both* off.

Could someone confirm that this, at least, *unlikely* to harm the amp
when used thus for long periods (all day long, when it's not as hot as
today) - I'm *certain* it doesn't harm the amp, but there's always that
little tiny doubt nagging away!

Shouldn't harm a decent SS amp.

--
*Caution: I drive like you do.

Dave Plowman London SW
To e-mail, change noise into sound.