2 Small Panels or 1 Large One - ESL

[Capaciti]

Hi,

i have forgotten to mention:

Another advantage of a long panel is the fact that if its heigh enough, there is no need to tilt the panel back in order to focus the centre of height to ear level. Tilting back results in different frequency response depending on listening distance, since center height shifts.

And if you will have setup your ESL system, take the chance to listen to a chorus. I promise you, it will be the first time, that the singers do not need to fall on their knees when performing in your room ! They will stand upright in front of you

Capaciti

[chinsettawong]

Hi a.wayne,

What do you mean by wings? Do you have any pictures?

[Fanuc]

Originally Posted by Calvin

Hi,

just one panel, but make it less high and more wide, e.g. 1600x400
two panels just means increased building effort without any advantage against a single panel.

jauu
Calvin

1, Lower acoustic intermodulation distortion ?

2, Large single panels may struggle with HF.

[audio.ESL]

Originally Posted by Capaciti

Hi Chinsettawong,

basically yes !

Acoustat did it, Pütz did it, Quadfreaks stack their 57er three times......

There is a little compromise when stacking, since the arearless borders from one to the other panel will create the venetian blind effect, causing sound interferences, but this is limited to shorter linstening/measurement distances.

If stacking, borders at ear level height should be avoided (70 -110cm from floor)

Capaciti

I have another stators of 300MM*1800MM ready to use,but it needs more technique to finish the job.In fact,I do not find a table to fit the long stator.

If I could stack 2 stators to get the same performance,it's much easier to do.

[Capaciti]

Hi,

i attached a picture from a customer. He added two acrylic wings on both sides of our smallest fullrange ESL.

Capaciti

[a.wayne]

Ribbon with wings

[a.wayne]

Current setup with asymmetric wings .....

[Calvin]

Hi,

- active membrane area is always superior to passive winglets.
- tall thin panel´s SPL over distance increases first and begins then to fall off at distance. Measure such panels in 0.1, 1.0 and 4m distance and You´ll see.
If You can´t measure listen..it´s should be obvious.
- of course do panels of more than 20cm not become unstable. It´s just a matter of how to design the membrane supports. It might be a matter indeed with silcone dots as supports. If it were so, why do all large FR ESLs feature more width or paralleled multiple panels??
- a panel very tall and thin suffers from phase cancellation more than a less high but wider panel. You can´t use the ´additional´ height for much good, but the positive effect of less phase cancellation of a wider panel reduces EQuing needs immediately.
- wether flat or curved doesn´t matter that much, both principles have their special advantages and merits and the surroundings should be kept in mind (like transformer quality etc.). So I wouldn´t talk of better, because measuring my panels I´d like to see the panhead that comes close let alone beats them in their operating range. On the other hand Capaciti´s panels are truely remarkable pieces of flat art. So I´d rather talk of tastes.
- there´s no obvious reason, why a 120cm tall panel has to be tilted. If I mount it in the right height (say with a socket of 60-70cm, below) it can be upright.

jauu
Calvin

[chinsettawong]

Thanks for posting the pictures.

Wachara C.

[a.wayne]

Originally Posted by Calvin

Hi,

- active membrane area is always superior to passive winglets.
- tall thin panel´s SPL over distance increases first and begins then to fall off at distance. Measure such panels in 0.1, 1.0 and 4m distance and You´ll see.
If You can´t measure listen..it´s should be obvious.
- of course do panels of more than 20cm not become unstable. It´s just a matter of how to design the membrane supports. It might be a matter indeed with silcone dots as supports. If it were so, why do all large FR ESLs feature more width or paralleled multiple panels??
- a panel very tall and thin suffers from phase cancellation more than a less high but wider panel. You can´t use the ´additional´ height for much good, but the positive effect of less phase cancellation of a wider panel reduces EQuing needs immediately.
- wether flat or curved doesn´t matter that much, both principles have their special advantages and merits and the surroundings should be kept in mind (like transformer quality etc.). So I wouldn´t talk of better, because measuring my panels I´d like to see the panhead that comes close let alone beats them in their operating range. On the other hand Capaciti´s panels are truely remarkable pieces of flat art. So I´d rather talk of tastes.
- there´s no obvious reason, why a 120cm tall panel has to be tilted. If I mount it in the right height (say with a socket of 60-70cm, below) it can be upright.

jauu
Calvin

Hello Calvin ,

I would like to see the curvehead that beats flat

Measure all day , makes no difference , I'm with Capaciti in preferring flat panels over curved and wired stators with open grid over perf panels.

As to the OP , it is easier to work with 2 smaller panels than one big one , so i see no dis-advantage in doing so and 2 flat panels will work.

Ohhhh Seems like Sanders ( the original curved guy ) has come to the same conclusion and prefer's flat panels 2..........

YouTube - AudiogoN @ CES: Roger Sanders electrostatic loudspeakers