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Multi-Way Conventional loudspeakers with crossovers

Scan-Speak has a new line: The Ellipticor
Scan-Speak has a new line: The Ellipticor
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Old 19th May 2017, 05:33 PM   #1
bcodemz is offline bcodemz  Canada
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Default Scan-Speak has a new line: The Ellipticor

Scan Speak just released a new line of drivers called the Ellipticors. The voice coil is elliptical and a very fancy neo slug motor for both the tweeter and midwoofer. The sensitivity is very high. 97dB on the tweeter, 92.5dB on the 7" woofer.

Ellipticor Scan-Speak A/S

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~38 mm Dome Tweeter
4 ohm, Neo, AirCirc

- Elliptic voice coil
- Low mechanical losses
- High sensitivity (SPL) (97dB)
- Aircirc optimized magnetsystem
- Unusually low distortion
- Flexible optics with replaceble decor ring

D3404/552000 Tweeter

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18WE/4542T00

18 cm Midwoofer
4 ohm, Paper Cone, Neo, AirCirc

- Elliptic voice coil
- Very low mechanical losses
- High sensitivity (SPL) (92.5dB)
- Aircirc optimized magnetsystem
- Unusually low distortion
- Flexible optics with replaceble decor ring

Wonder how much these bad boys will be?
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Old 19th May 2017, 05:38 PM   #2
GDO is offline GDO
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Like these rising responses...
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Old 19th May 2017, 06:06 PM   #3
BWRX is offline BWRX  United States
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Looks to be beautifully crafted, as you would expect from a driver that probably prices itself out of the range of most DIYers.

A lot of these newer drivers use big Neo magnets but it's always in the standard configuration. Why doesn't anyone license Aura's NRT and use that in the magnetic circuit?
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Old 19th May 2017, 06:54 PM   #4
Calvin is offline Calvin  Germany
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Hi,

guess we all have seen better curves for less cost.
Amplitude and Phase response as well as Impedance plots look rather mediocre to poor .... nothing spectactular so far .... and the front optics of the midwoofer looks cheaper than a 30$ Dayton Reference ... just my 2cents.

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Old 19th May 2017, 07:00 PM   #5
GDO is offline GDO
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Curves are exceptionnaly interesting...for direct radiators...
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"Fitz: I want to use an 8 inch woofer for more bass and a dipolar ribbon tweeter for sweet highs. And the enclosure should be a box with a vent, like everybody uses." S.L. Conversations with Fitz https://www.youtube.com/watch?v=59C7KZ5i42A
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Old 19th May 2017, 07:15 PM   #6
ICG is offline ICG  Germany
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Location: Too many amps, too many speakers, too little time
The 18WE/4542T00 is very interesting. The inductance is exceptionally low, only 100H (0,1mH), which is nice for a high xo at the top end but the big resonance at ~1,2kHz (-> impedance response in the datasheet, that WILL show on the decay!) doesn't seem to agree with that.
The combination of a high fs, low Qts and very high Xmax seems a bit odd though. I mean, you won't get very low so a subwoofer isn't a good use. On the other hand, for a sat, the high Xmax isn't doing much and the resonance is probably not easy to tame. Maybe I'm wrong but it's probably not easy to find an ideal use for the driver.

Fs (Hz) 47
Qt 0.27
VAS_(ltr) 15.7
Xmax__(mm) 7.2

Datasheet (PDF)
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Old 19th May 2017, 07:22 PM   #7
ICG is offline ICG  Germany
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Location: Too many amps, too many speakers, too little time
About the sensitivity: The drivers are 4 Ohm and measured at 2,83V, so you have to subtract 3dB for 1W/1m, which makes the 18WE/4542T00 not that high sensitive, 89,5dB isn't sensational for a 18cm driver.
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Old 19th May 2017, 07:54 PM   #8
dragonweed is offline dragonweed  Hungary
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Agree with ICG.... Not sure what was the idea about the use of that driver.
For vented, the combination of those parameters is rather useless, you can get down to maybe 60-70 Hz in a smallish box, but then why is that huge Xmax value there for?
The guys at SB Acoustics make way more useful drivers for the fraction of the price.

Last edited by dragonweed; 19th May 2017 at 07:59 PM.
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Old 19th May 2017, 08:19 PM   #9
CharlieLaub is offline CharlieLaub  United States
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Scan-Speak has a new line: The Ellipticor
Quote:
Originally Posted by Calvin View Post
Hi,

guess we all have seen better curves for less cost.
Amplitude and Phase response as well as Impedance plots look rather mediocre to poor .... nothing spectactular so far .... and the front optics of the midwoofer looks cheaper than a 30$ Dayton Reference ... just my 2cents.

jauu
Calvin
Totally agree. The off axis responses of the tweeter are not very impressive... it seems to be getting very narrow. That could be fixed if they used some horn loading. And why can't they seem to get rid of that midwoofer 1 point something kHz resonance? That's nothing new in their product line. At least the frequency response does not have a dip there like previous drivers have.

What isn't shown is the distortion (HD and IMD) and energy storage. Maybe these characteristics are stellar... but then why not put that into the datasheet for all to see? They do mention "Unusually low distortion". Any junior marketing person can write a blurb about the amazing performance of the company's latest shiny product. Come on Scan-Speak: PROVE IT TO ME WITH DATA. I'm certainly not going to shell out a few hundred dollars just to check it out on a hunch!
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Old 19th May 2017, 08:19 PM   #10
bcodemz is offline bcodemz  Canada
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I feel like this combination of specs is designed to be used for an active speaker. In this case, the natural bass extension does not matter since it is fixed by DSP. However, it gets the benefits of the additional efficiency and most likely better micro detail from the higher acceleration force of the very strong motor and light-ish cone.
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