resonance frequency Audiostatic ES200RS

[WrineX]

anybody know the original resonance frequency of the ES200RS ?

rebuilding a set, and could not figure out the res frequency,(would have measured before destroying them but did not have the tools back then) mine is around the 44 hz now, maybe to high, but with even lower res it flaps really quick against the stator , and also gets sucked to one stator quit easy

res freq is measrures by HOLMimpulse, hope this is correct. measure at 10 cm distance by the way. i know proximity effect and haas so curve is not as it should be.

[bolserst]

Originally Posted by WrineX

anybody know the original resonance frequency of the ES200RS ?

Hi,

The only data I can provide is that the resonance for both pair of ES100s I measured was 45Hz.

[WrineX]

ofcourse it playes like this even at pretty high volume but still when sertain notes are reached prob 43 hz they go beserk , and flap against the stator, i rather have they dont put out as much bass then flap against stator. it sounds really ugly and is not really predictable. it sucks. by the way i dont know about the original ES200 maybe they cant handle the power, in the book of fieker it says max SPL is 92 well im really above that i guess, not really a way to test at the moment but i play them as loud as any other speaker i like to crank it up with certain movie scores. they have pretty much low freq,

[MJ Dijkstra]

Originally Posted by WrineX

ofcourse it playes like this even at pretty high volume but still when sertain notes are reached prob 43 hz they go beserk , and flap against the stator, i rather have they dont put out as much bass then flap against stator. it sounds really ugly and is not really predictable. it sucks. by the way i dont know about the original ES200 maybe they cant handle the power, in the book of fieker it says max SPL is 92 well im really above that i guess, not really a way to test at the moment but i play them as loud as any other speaker i like to crank it up with certain movie scores. they have pretty much low freq,

Hi,

I"ve got the ES200 myself.
They can loud enough for me without problems.
Ofcourse, loud is a subjective thing but I guess 92 dB should be in the pocket.
I have demonstrated this ESL at one of the club meetings in Holland,
though they weren't in their original state. Check the clubsite.
Of course feeding this speaker with serious organ notes (e.g. the great organ of St, Eustache, Dorian recording) on high level will cause the Mylar to exceed the max. excursion, the same thing with dynamic speakers anyway.

[Audiofanatic]

Originally Posted by MJ Dijkstra

Hi,

I"ve got the ES200 myself.
They can loud enough for me without problems.
Ofcourse, loud is a subjective thing but I guess 92 dB should be in the pocket.
I have demonstrated this ESL at one of the club meetings in Holland,
though they weren't in their original state. Check the clubsite.
Of course feeding this speaker with serious organ notes (e.g. the great organ of St, Eustache, Dorian recording) on high level will cause the Mylar to exceed the max. excursion, the same thing with dynamic speakers anyway.

Hi dear friend,

This is true, but don't forget that the 200's have a mirror drive! And that that thing is causing more problems than it solves.
I prefer a straight connection to the stepup's. That way you eliminate filters in the signal pad, and 44 Hz is not good, it should be aruond 38 Hz.
And make sure you don't use a heat gun on the panels, that is a big NO NO!

Max db after modifying the ES series is above 100 db at listener position. (2.5 meter).
People think that placing a new foil and coating is easy and simple, it's all but that! It's years of practicing, take it form me, I've been there.

All the best,


Audiofanatic

[WrineX]

Originally Posted by Audiofanatic

Hi dear friend,

This is true, but don't forget that the 200's have a mirror drive! And that that thing is causing more problems than it solves.
I prefer a straight connection to the stepup's. That way you eliminate filters in the signal pad, and 44 Hz is not good, it should be aruond 38 Hz.
And make sure you don't use a heat gun on the panels, that is a big NO NO!

Max db after modifying the ES series is above 100 db at listener position. (2.5 meter).
People think that placing a new foil and coating is easy and simple, it's all but that! It's years of practicing, take it form me, I've been there.

All the best,

Audiofanatic

you mean when you remove the mirror drive you can hit 100dB? by the way 38 hz how can you reach this low resonance without it sticking to stator when power applied

[bolserst]

Originally Posted by WrineX

you mean when you remove the mirror drive you can hit 100dB? by the way 38 hz how can you reach this low resonance without it sticking to stator when power applied

Does the ES200RS need the stabilizing silicon dots applied between each cross bar and diaphragm like the ES100?

[Audiofanatic]

Originally Posted by WrineX

you mean when you remove the mirror drive you can hit 100dB?

Yes! but not in the low freq. region!

About the low freq. I;m sorry to tell you, but that's for me to know and for you to find out! When my commercial ESL is out, you can listen to it and tell me if it's true or not!

With low volume! The panel is capable of producing freq. lower than we can hear, it's the volume control that needs to be adjusted (low enough).

You can't expect a ESL panel to produce low frequencies of approx 30 Hz at 90 db at listener position, that's not fair knowing that the panel has a linear movement space of say 4 mm. It's not fair to the ESL panel, but if you make an ESL panel for the low freq. than don't expect a perfect high freq response!
The opposite is also the case!

Just my 2 cent's.

All the best,

Audiofanatic

[Audiofanatic]

Originally Posted by bolserst

Does the ES200RS need the stabilizing silicon dots applied between each cross bar and diaphragm like the ES100?

Yes,

All Audiostatic's need that!

Otherwise it's stick to the stator.

Audiofanatic

[WrineX]

but i think my ES200 had only 2 dotes as far as i can remmember. by the way it upps the res freq as well