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wow. I would love to hear your system. Can you describe the rotary sub some?
I find that hard to believe - esp. in respect to the bass capabilities of the 20.1s - there's quite a big difference in drive size between the two models.
Personally, I've never heard an ES/Dynamic combo where the woofer can keep up with the panel and doesn't sound discontinuous.
Regarding ringing in full range electrostatics.I have read about the phenomena on and off over the years.I have had full range electrostatics (Acoustat spectra 22s) for more than 20 years and have never heard any "ringing".I have heard most of the full range electrostatics over this time and have never heard this "ringing".My friends who own full range electrostatics never mention it.The planar sites only mention it in passing once in a blue moon.Maybe some one can tell me what to listen for.Does this "ringing" occur only in specific and unusual circumstances?Has it been designed out of electrostatics now or is this just an example of people looking for a small problem to magnify?Can some one illumine me a little on this one?
If there are uncontrolled resonances in the physical structure of the electrostatic speaker their frequencies would vary dependent the size and nature of loudspeaker design. If the ringing referred to is a panel resonance it will depend on the size of the panel.... I have heard the Soundlabs and if I was thinking of purchasing a large electrostatic loudspeaker they would be at the top of the list for an audition. I didn't notice anything odd when I heard them, just a very clear window into the performance.
Duke are you aware of any ringing issues with the Soundlabs. I suspect that if you hit them with a simple impulse signal,(ie,a click) you might see a near perfect reproduction of the impulse. I don't think we would see any over-shoot but i haven't seen a test like this done on any of their speakers.Scotty
Duke are you aware of any ringing issues with the Soundlabs. I suspect that if you hit them with a simple impulse signal,(ie,a click) you might see a near perfect reproduction of the impulse. I don't think we would see any over-shoot but I haven't seen a test like this done on any of their speakers.Scotty
Just as a matter of interest can you give me a bit of an idea of the frequency/frequencies that ringing typically occurs from full range electrostatics?
John Atkinson said a while back that when he measured the Soundlabs Stereophile bought for J. Gordon Holt they rang like crazy.Check out this nearfield frequency response measurement of the MG 3.6:http://www.stereophile.com/content/magnepan-magneplanar-mg36r-loudspeaker-measurementsIt gives you a feel for the magnitude of the resonance you need to counter dipole cancellation. Note that most of this isn't audible at the listener's seat:http://www.stereophile.com/content/magnepan-magneplanar-mg36r-loudspeaker-more-commentsAccording to the second letter, the underamped dipole woofer technique has been in use at least since Peter Walker designed the Quad!