"tony sayer"
In article

Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.


** The ESL 63 / 988 is highly phase ( time ) coherent and uses 8
independent panels.

Production units are tested in the factory against a calibrated reference
unit using 1 kHz square wave drive. The signal from a measurement mic 2
metres on axis of the unit under test is viewed on a scope and must
produce
a good square wave there.

Yes that is very impressive How many moving coil designs could do
that....



** None - when you include both the good square wave and close frequency
/ phase matching.




............ Phil

On Sat, 6 Nov 2004 09:08:20 +0000, tony sayer
wrote:

In article , Phil Allison
writes

"Dave Plowman

Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.


** The ESL 63 / 988 is highly phase ( time ) coherent and uses 8
independent panels.

Production units are tested in the factory against a calibrated reference
unit using 1 kHz square wave drive. The signal from a measurement mic 2
metres on axis of the unit under test is viewed on a scope and must produce
a good square wave there.

Yes that is very impressive How many moving coil designs could do
that....

All Dunlavys, for a start.
--

Stewart Pinkerton | Music is Art - Audio is Engineering

"Dave Plowman (News)" wrote in message
...
In article ,
Robert Morein wrote:
Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.

**The Martin Logan CLS does. As do many others.


--
Trevor Wilson
www.rageaudio.com.au

"Dave Plowman (News)" wrote in message
...
In article ,
Robert Morein wrote:
Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.

Some do, some don't.
My Acoustat 2+2's have a single driver.

Robert Morein wrote:
"Dave Plowman (News)" wrote in message
...

In article ,
Robert Morein wrote:

Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.


Some do, some don't.
My Acoustat 2+2's have a single driver.

Err... no they don't. They have 4 panels per speaker. 2 on top of 2
(2+2). I had the 1+1's medallion mod for close to 20 years. Loved the
way they sounded and the sound stage they presented. Just recently sold
them. They were replaced with Von Schweikert V4's.

"TonyP" wrote in message
. net...
Robert Morein wrote:
"Dave Plowman (News)" wrote in message
...

In article ,
Robert Morein wrote:

Electrostats may not be completely time coherent, but as they have a
single driver,

But they don't.


Some do, some don't.
My Acoustat 2+2's have a single driver.

Err... no they don't. They have 4 panels per speaker. 2 on top of 2
(2+2). I had the 1+1's medallion mod for close to 20 years. Loved the
way they sounded and the sound stage they presented. Just recently sold
them. They were replaced with Von Schweikert V4's.

Alright, they have four panels, which I know, having a bunch of spares in my
closet, but they are identical in size and frequency response.
The substance of the discussion is not changed by this revelation.

"Alex" wrote in message ...
For those audiophiles who'd like to own a Quad 988 but lack the budget,
or the room, or both, which of the non-ES speakers come closest to that
magical electrostatic sound?

My Duntechs come the closest I've heard however they are more expensive. The
Quads are actually quite a bargain.

--
Bob Olhsson Audio Mastery, Nashville TN
Mastering, Audio for Picture, Mix Evaluation and Quality Control
Over 40 years making people sound better than they ever imagined!
615.385.8051 http://www.hyperback.com

Alex wrote:

For those audiophiles who'd like to own a Quad 988 but lack the budget,
or the room, or both, which of the non-ES speakers come closest to that
magical electrostatic sound? [Answers from friends have ranged from
well known current brands (Dynaudio) to discontinued models I didn't
know about (DCM Time Window).]

Magnepan.

I had magneplanar SMGas for a while (I have them in storage - I'll sell for
£150, downsized my room). Before that stacked quads. I think probably the
biggest difference with box speakers, apart from the rear radiation and
soundstage, is that there's no cabinet resonance. Remove the cabinet resonances
from box speakers and you might get something of the planar sound. This may be
why small 2 ways with stiffer boxes can have that 'clean' sound which in larger
enclosures you'd have to engineer in with sand, marble, concrete, corian and
all kinds of resonance-killing solutions. Once you hear the sound of the wooden
boxes, I think all hope of a clean sound is sunk.

=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

"Joseph Oberlander" wrote in message
hlink.net...


Alex wrote:

For those audiophiles who'd like to own a Quad 988 but lack the budget,
or the room, or both, which of the non-ES speakers come closest to that
magical electrostatic sound? [Answers from friends have ranged from
well known current brands (Dynaudio) to discontinued models I didn't
know about (DCM Time Window).]

Magnepan.


Dumb ass!