Scanspeak came out with these. It’s hard to believe that an oval voice coil would have less distortion than a round one does. I guess that’s why they aren’t showing distortion specs. Distortion probably sells fewer speakers than style does. I have no doubt they have low distortion, but how much does the voice coil shape matter?
I'm not sure it's a gimmick but I do think they are well into diminishing roi vs the revelator and illuminator lines. Troels says they are bomb, but at this point I'd never bother.
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It is a stupid expensive process to have an elliptical shaped voice coil and magnet structure. I have not heard them in real life though looking at the spec sheets suggests they still can suffer from breakup just like those round voice coil drivers.
Its interesting
what is the model number / links?
wild guess was trying to help with vertical
by making the area smaller.
what is the model number / links?
wild guess was trying to help with vertical
by making the area smaller.
Sorry, ScanSpeak Ellipticor D3404/5520-00 38mm Elliptical Dome Tweeter. $653 ea.
https://www.madisoundspeakerstore.c...r-d3404/5520-00-38mm-elliptical-dome-tweeter/
There is a big juicy midrange too.
https://www.madisoundspeakerstore.c...k-ellipticor-d8404/552000-84mm-dome-midrange/
I am sure your wallet would be distorted buying them.
Great, another atc dome mid competitor for only 1250usd/pc 🤦
Vance Dickason has tested several over at the Voice Coil Test Bench. I was not impressed by any of the drivers. Some do, indeed, exhibit very low distortion (esp. third harmonic) but they all seem to give up performance in other, important areas. The frequency response and resonances are fairly poor IMO on several of the drivers, especially for the money.
Dan
Dan
Whooah 653 dollars?
Now I see what your talking about.
Would have to see some fancy measurement
to justify that.
Dont know if tooling or development
was little expensive.
But gonna be a hard sale.
hope they get it.
Dome mids are fun too.
very interesting.
Again Oval speakers more about directivity
advantages I would assume
and like to see if it happens.
Mounting ring and rear chamber
still physically limit the center to center
mounting potential.
But at least worth noting the effort
and approach to help vertical
price wise, yes it has to be a low distortion
motor compared to similar priced motors.
But assume be better off axis making the piston
slightly smaller in one direction.
Would be used to help solve vertical issues
in typical vertical mounting.
Useless of course if the mounting ring restricts
the center to center mounting distance though.
Be nice touch if mounting ring was also truncated
as well to the physical mounting as close as possible
to other drivers.
Now I see what your talking about.
Would have to see some fancy measurement
to justify that.
Dont know if tooling or development
was little expensive.
But gonna be a hard sale.
hope they get it.
Dome mids are fun too.
very interesting.
Again Oval speakers more about directivity
advantages I would assume
and like to see if it happens.
Mounting ring and rear chamber
still physically limit the center to center
mounting potential.
But at least worth noting the effort
and approach to help vertical
price wise, yes it has to be a low distortion
motor compared to similar priced motors.
But assume be better off axis making the piston
slightly smaller in one direction.
Would be used to help solve vertical issues
in typical vertical mounting.
Useless of course if the mounting ring restricts
the center to center mounting distance though.
Be nice touch if mounting ring was also truncated
as well to the physical mounting as close as possible
to other drivers.
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at first i thought this this photo was off, it seems all the drivers are oblong, looks weird.
http://www.troelsgravesen.dk/Ellipticor-A50-II/A50_8_1200.jpg
http://www.troelsgravesen.dk/Ellipticor-A50-II/A50_8_1200.jpg
I suspect that the marketing department could come up with any number of reasons why it's better than a round VC, but most ears, I suspect, could not...
Won't this reduce the motor efficiency and have a higher moving mass than a circular coil?
A couple of advantages which spring to mind are improved cooling due to greater surface area than a circular coil and reduced inductance due to fewer turns for a given length of wire.
German diy magazine Klang&Ton did develop "Ella":
https://audio-hi.fi/download/pdf/Klang-Ton_2020-3_Ella.pdf
https://audio-hi.fi/download/pdf/Klang-Ton_2020-3_Ella.pdf
Making these drivers will always be much more expensive than a round vc because a round one merely needs to be centered but this one needs to be centered and precisely aligned.
The shape of the voice coil makes no difference to dispersion if it is still driving a circular cone as is the case here. Dispersion is determined by the cone diameter and the wavelength it reproduces ie when wavelength = cone diameter the dispersion will be 90deg.
I'm sure there was an elipse gold colour metal dome used in some speakers during the early 2000's when I was avidly reading the Richer Sounds catalogue. Maybe Mordant Short?