A tale from the early ages of hi-fi.
I had six speakers in my surround system. Acoustat X with an
interface
and Acoustat TNT amp. in front, Quads 57 sides and unmodified Acoustat
X
rear.
The output of the Quads with Bryston 125 w. amp was weaker
than the
rear Acoustat. Since I had two more Quads 57 idle in the loft I
decided to stack
them just for a lark. In parallel of course. My line preamp is a tube
masterpiece
and my phono preamp. is transistor from the same miracle worker. I use
Behringer as equalisers and Xovers
The result is unexpected. The stacks are stunning. The
stacked
(ancient) Quads are now in front. I do not need now the Bohl.-Graebner
tweeters I had with the Acoustats nor the 8" custom speakers to fill
the 200 Hz hole.
To me they sound at least as good as the best I heard. (BaW 802,
Italian masterpieces whose name escapes me, Bohlaender- Graebner Radii,
M-L CLS with a good subwoofer- not Apogees, not Wilson Puppies not any
M-L hybrid including their Monument, not any of the later Quads. Money
talks on Wall Street- art has its own rules.
Note that against advice of many experts I removed the
dust-
covers from the Quads many years ago. The experts said they'll be
ruined
by dust attracted electromagnetically. Well, if they are ruined I'll go
for the
ruins any time. I also got rid of the front and rear grilles.
So my advice is: don't get rid of these particular
antiques- stack
them. You'll get great, crisp bass down to 63Hz- after that it dies off
suddenly.
Speaker warbles unpleasantly if you insist on forcing it down its
throat.
There is no Allison effect suckout around 200Hz so noticeable with
single
Quads and Acoustats. The midrange and treble are glorious. The most
convincing piano, violins and voice I heard coming from the electronic
gear.
A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

wrote:
A tale from the early ages of hi-fi.
I had six speakers in my surround system. Acoustat X with an
interface
and Acoustat TNT amp. in front, Quads 57 sides and unmodified Acoustat
X
rear.
The output of the Quads with Bryston 125 w. amp was weaker
than the
rear Acoustat. Since I had two more Quads 57 idle in the loft I
decided to stack
them just for a lark. In parallel of course. My line preamp is a tube
masterpiece
and my phono preamp. is transistor from the same miracle worker. I use
Behringer as equalisers and Xovers
The result is unexpected. The stacks are stunning. The
stacked
(ancient) Quads are now in front. I do not need now the Bohl.-Graebner
tweeters I had with the Acoustats nor the 8" custom speakers to fill
the 200 Hz hole.
To me they sound at least as good as the best I heard. (BaW 802,
Italian masterpieces whose name escapes me, Bohlaender- Graebner Radii,
M-L CLS with a good subwoofer- not Apogees, not Wilson Puppies not any
M-L hybrid including their Monument, not any of the later Quads. Money
talks on Wall Street- art has its own rules.
Note that against advice of many experts I removed the
dust-
covers from the Quads many years ago. The experts said they'll be
ruined
by dust attracted electromagnetically. Well, if they are ruined I'll go
for the
ruins any time. I also got rid of the front and rear grilles.
So my advice is: don't get rid of these particular
antiques- stack
them. You'll get great, crisp bass down to 63Hz- after that it dies off
suddenly.
Speaker warbles unpleasantly if you insist on forcing it down its
throat.
There is no Allison effect suckout around 200Hz so noticeable with
single
Quads and Acoustats. The midrange and treble are glorious. The most
convincing piano, violins and voice I heard coming from the electronic
gear.
A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

A comment after the encounter with pet rocks, correct attitude to
Islam, and the
Republican and Democrat view of the big , large world across the oceans
Apologies for trying to start an audio thread and regrets at being so
naive
as to ask for expert help in an "audio forum".
Back to pet rocks.
Ludovic Mirabel

In article . com,
" wrote:

wrote:

snip stacked Quads story

A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

A comment after the encounter with pet rocks, correct attitude to
Islam, and the
Republican and Democrat view of the big , large world across the oceans
Apologies for trying to start an audio thread and regrets at being so
naive
as to ask for expert help in an "audio forum".
Back to pet rocks.

Sorry, when you called the story, "A tale from the early ages of hi-fi,"
I thought it a reminiscence.

I've never had a problem with my Quad 63s, but I'd guess that your
panels are dirty. I've heard one can use a vacuum cleaner on the things.
This doesn't explain why disconnecting the preamp has any effect, though.

Here's one of many Quad-related sites:

http://www.geocities.com/quad_esl63/diagnose1.html

Quote begins.

Step 5 Speaker makes ticking or fizzing noises

Connect the speaker to an amplifier with CD player and turn the volume
to normal listening level. If there is no spark visible with speaker
makes ticking or fizzing noises.

* Faulty element due to excessive leakage across the diaphragm.
Disconnect the audio leads from the loudspeaker. The loudspeaker should
be silent. This test may help to identify the faulty element.
Alternatively EHT should be disconnected from each element in turn
(remembering to disconnect it from both edges of the diaphragm) working
from the top of the loudspeaker downwards and re-checking the leakage by
means of the neon flicker rate each time.

End quote.

"Faulty element" doesn't seem like a good thing.

I've never used this kit, but there's a 'testimonial':

http://www.eraudio.com.au/ESL_Repair...ad_57_kit.html

Good luck,

Stephen

MINe 109 wrote:
In article . com,
" wrote:

wrote:

snip stacked Quads story

A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

A comment after the encounter with pet rocks, correct attitude to
Islam, and the
Republican and Democrat view of the big , large world across the oceans
Apologies for trying to start an audio thread and regrets at being so
naive
as to ask for expert help in an "audio forum".
Back to pet rocks.

Sorry, when you called the story, "A tale from the early ages of hi-fi,"
I thought it a reminiscence.

I've never had a problem with my Quad 63s, but I'd guess that your
panels are dirty. I've heard one can use a vacuum cleaner on the things.
This doesn't explain why disconnecting the preamp has any effect, though.

Here's one of many Quad-related sites:

http://www.geocities.com/quad_esl63/diagnose1.html

Quote begins.

Step 5 Speaker makes ticking or fizzing noises

Connect the speaker to an amplifier with CD player and turn the volume
to normal listening level. If there is no spark visible with speaker
makes ticking or fizzing noises.

* Faulty element due to excessive leakage across the diaphragm.
Disconnect the audio leads from the loudspeaker. The loudspeaker should
be silent. This test may help to identify the faulty element.
Alternatively EHT should be disconnected from each element in turn
(remembering to disconnect it from both edges of the diaphragm) working
from the top of the loudspeaker downwards and re-checking the leakage by
means of the neon flicker rate each time.

End quote.

"Faulty element" doesn't seem like a good thing.

I've never used this kit, but there's a 'testimonial':

http://www.eraudio.com.au/ESL_Repair...ad_57_kit.html

Good luck,

Stephen

Many thanks for your interest and valuable reference that I did not
ever
come across before. Providence watches over Quads. If the noise
persisted
i'd have been tempted to order their kit and... knowing my manual
dexterity
would have ended up with a mess.
Luckoly I just disconnected the power and next morning vacuumed the
unit
thoroughly.
The noise quit, The dust covers are still off.
I continue admiring the extraordinary sound of the stacked Quads. It is

completely different from a single quad/per side and the nearest to
live
music I heard at home.
Let me know if you ever try stacking the 63.
Ludovic Mirabel

wrote:
MINe 109 wrote:
In article . com,
" wrote:

wrote:

snip stacked Quads story

A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

A comment after the encounter with pet rocks, correct attitude to
Islam, and the
Republican and Democrat view of the big , large world across the oceans
Apologies for trying to start an audio thread and regrets at being so
naive
as to ask for expert help in an "audio forum".
Back to pet rocks.

Sorry, when you called the story, "A tale from the early ages of hi-fi,"
I thought it a reminiscence.

I've never had a problem with my Quad 63s, but I'd guess that your
panels are dirty. I've heard one can use a vacuum cleaner on the things.
This doesn't explain why disconnecting the preamp has any effect, though.

Here's one of many Quad-related sites:

http://www.geocities.com/quad_esl63/diagnose1.html

Quote begins.

Step 5 Speaker makes ticking or fizzing noises

Connect the speaker to an amplifier with CD player and turn the volume
to normal listening level. If there is no spark visible with speaker
makes ticking or fizzing noises.

* Faulty element due to excessive leakage across the diaphragm.
Disconnect the audio leads from the loudspeaker. The loudspeaker should
be silent. This test may help to identify the faulty element.
Alternatively EHT should be disconnected from each element in turn
(remembering to disconnect it from both edges of the diaphragm) working
from the top of the loudspeaker downwards and re-checking the leakage by
means of the neon flicker rate each time.

End quote.

"Faulty element" doesn't seem like a good thing.

I've never used this kit, but there's a 'testimonial':

http://www.eraudio.com.au/ESL_Repair...ad_57_kit.html

Good luck,

Stephen

Many thanks for your interest and valuable reference that I did not
ever
come across before. Providence watches over Quads. If the noise
persisted
i'd have been tempted to order their kit and... knowing my manual
dexterity
would have ended up with a mess.
Luckoly I just disconnected the power and next morning vacuumed the
unit
thoroughly.
The noise quit, The dust covers are still off.
I continue admiring the extraordinary sound of the stacked Quads. It is

completely different from a single quad/per side and the nearest to
live
music I heard at home.
Let me know if you ever try stacking the 63.

Would stacking 63's make sense? ...it would eliminate their point
source emulation which I think allows their amazing imagery.

ScottW

ScottW wrote:
wrote:
MINe 109 wrote:
In article . com,
" wrote:

wrote:

snip stacked Quads story

A tiny fly in the ointment and request for expert
advice. A 40/50
times/minute low volume clicking comes from two of the four tweeter
panels
in the Quad. Stops as soon as electric charge or connection to the
preamp
broken.
Ludovic Mirabel

A comment after the encounter with pet rocks, correct attitude to
Islam, and the
Republican and Democrat view of the big , large world across the oceans
Apologies for trying to start an audio thread and regrets at being so
naive
as to ask for expert help in an "audio forum".
Back to pet rocks.

Sorry, when you called the story, "A tale from the early ages of hi-fi,"
I thought it a reminiscence.

I've never had a problem with my Quad 63s, but I'd guess that your
panels are dirty. I've heard one can use a vacuum cleaner on the things.
This doesn't explain why disconnecting the preamp has any effect, though.

Here's one of many Quad-related sites:

http://www.geocities.com/quad_esl63/diagnose1.html

Quote begins.

Step 5 Speaker makes ticking or fizzing noises

Connect the speaker to an amplifier with CD player and turn the volume
to normal listening level. If there is no spark visible with speaker
makes ticking or fizzing noises.

* Faulty element due to excessive leakage across the diaphragm.
Disconnect the audio leads from the loudspeaker. The loudspeaker should
be silent. This test may help to identify the faulty element.
Alternatively EHT should be disconnected from each element in turn
(remembering to disconnect it from both edges of the diaphragm) working
from the top of the loudspeaker downwards and re-checking the leakage by
means of the neon flicker rate each time.

End quote.

"Faulty element" doesn't seem like a good thing.

I've never used this kit, but there's a 'testimonial':

http://www.eraudio.com.au/ESL_Repair...ad_57_kit.html

Good luck,

Stephen

Many thanks for your interest and valuable reference that I did not
ever
come across before. Providence watches over Quads. If the noise
persisted
i'd have been tempted to order their kit and... knowing my manual
dexterity
would have ended up with a mess.
Luckoly I just disconnected the power and next morning vacuumed the
unit
thoroughly.
The noise quit, The dust covers are still off.
I continue admiring the extraordinary sound of the stacked Quads. It is

completely different from a single quad/per side and the nearest to
live
music I heard at home.
Let me know if you ever try stacking the 63.

Would stacking 63's make sense? ...it would eliminate their point
source emulation which I think allows their amazing imagery.

ScottW

You're right of course. Numbers and me don't mix.
Ludovic Mirabel