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 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

"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

"Phil Allison" wrote in message
...

"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 !!!




Aw.....

She's *jealous*!! :-)

How sweet - or it would be, if it weren't Phaecal Phil, The Philthy
Phairy....

"Phil Allison" wrote in message
...

"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


There is almost no doubt which one you are Phil. LOL

On Thu, 29 Jun 2006 17:11:19 +0100, "Keith G"
wrote:


"Phil Allison" wrote in message
...

"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 !!!




Aw.....

She's *jealous*!! :-)

How sweet - or it would be, if it weren't Phaecal Phil, The Philthy
Phairy....


Just why IS she hanging around here, particularly at this time of
night? Has she been thrown off all the Aussie groups already?

d

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