Elipticor Midrange

[fatmarley]

Truly the best speaker I have ever made.

View attachment 1056555

Doesn't he say that about most speakers he makes?

 

[hifijim]

If the retail price is higher than the Bliesma M74S or M74P, then they have missed the boat and the market for the drivers will be limited. In my opinion... j.

 

[HiFiCompass]

Kms(x) flatness and symmetry is very important. At least as much as BL(x).

now Scan has always had a handle of designing good soft parts; spider/surround and other moving parts/suspension. For almost 2 decades their 18W/8545 was unbeaten in terms of mid-bass; and when it was released in 1985 or thereabouts it had an incredibly soft/pliable surround and never before heard of 6.5mm xmax.

To me, soft/moving/suspension parts has come back to the forefront as being critically important. Even if your motor is Mazda ing as soon as the driver starts moving a few mm everything can go out the window. As illustrated by @lrisbo from Purifi, optimising their surround for neutral Sd and reinforcing cone-edge joint on the back side of the driver.

If someone can do a midrange that can go wide and deep, Scan can do it.

@HiFiCompass are these on your radar?


It’s time to start saving my shitsvillian micro pesos, or go looking and shortlisting midranges from professional/PA manufacturers. Eg. Sica, BMS, Lavoce, 18Sound

something we might be able to buy without crying

I saw this midrange for the first time a couple of days ago and was discouraged by its outer size. I think the reason is the ferrite magnet in the motor. I am sure that this midrange will have the empyreal price, so the question is whether they save on a neodymium magnet only for the sake of profit, and not for the sake of important technical characteristics? I never was impressed by the objective measurements of the Ellipticor tweeters...

 

[piotr z]

I'm personally a bit disappointed with what Bliesma did with their M74. They should have designed it with extended former and double suspension, as single suspension puts at question use below 700-800Hz.

 

[wolf_teeth]

I dont think it's ferrite. Says neo rigut in the blurb on the website. Looks like the motors on the woofers with individual neo stacks. You can see it through the sidewalls.

 

[Boden]

now Scan has always had a handle of designing good soft parts; spider/surround and other moving parts/suspension.

Most of those parts (cones/domes/surrounds) were in the past produced and partially designed too by Dr. Kurt Muller in Krefeld, Germany. I can hardly imagine Scan nowadays -given its small size- would be able to make the parts in house.

 

[HiFiCompass]

I dont think it's ferrite. Says neo rigut in the blurb on the website. Looks like the motors on the woofers with individual neo stacks. You can see it through the sidewalls.

Yes, already have seen that. Then it looks like the copper sleeves and very wide magnet gap, as in the case with D2404 tweeter, required incredibly huge motor to get more or less acceptable sensitivity

 

[eriksquires]

Wow!! I completely misjudged how big the entire assembly is!

 

[Brett]

Rumour has it a pair of the new Scanspeak elliptical midrange domes would initially set you back over 6,000 Australian Pesos landed. I doubt DIY is the upfront target market.

A pair of Volts is in the 2500 range.

 

[boswald]

Doesn't he say that about most speakers he makes?

Only the really big ones(TLSI,II,III). Never shy about discussing the compromises & limitations.

 

[keithj01]

Kms(x) flatness and symmetry is very important. At least as much as BL(x).

now Scan has always had a handle of designing good soft parts; spider/surround and other moving parts/suspension. For almost 2 decades their 18W/8545 was unbeaten in terms of mid-bass; and when it was released in 1985 or thereabouts it had an incredibly soft/pliable surround and never before heard of 6.5mm xmax.

To me, soft/moving/suspension parts has come back to the forefront as being critically important. Even if your motor is Mazda ing as soon as the driver starts moving a few mm everything can go out the window. As illustrated by @lrisbo from Purifi, optimising their surround for neutral Sd and reinforcing cone-edge joint on the back side of the driver.

If someone can do a midrange that can go wide and deep, Scan can do it.

@HiFiCompass are these on your radar?


It’s time to start saving my shitsvillian micro pesos, or go looking and shortlisting midranges from professional/PA manufacturers. Eg. Sica, BMS, Lavoce, 18Sound

something we might be able to buy without crying

Surely Kms(x) isn't particularly relevant in a midrange driver, as, above resonance, the diaphragm's behaviour is mass-controlled?

 

[tktran303]

Purely speculation; as I’m not well versed in transducer design.

Though I found it curious that both of ATC’s mid-dome and tweeters use dual suspension. (?spider).

Marketing or secret sauce recipe?

 

[keithj01]

Purely speculation; as I’m not well versed in transducer design.

Though I found it curious that both of ATC’s mid-dome and tweeters use dual suspension. (?spider).

Marketing or secret sauce recipe?

Neither - it's a fairly well established way of preventing undesirable rocking.

 

[tktran303]

Neither - it's a fairly well established way of preventing undesirable rocking.

Hang on a minute.

Rocking being the “macro” of vibration, for lack of a better word.

does that not imply the compliance or stiffness linearity and symmetry with excursion is important?

 

[keithj01]

Hang on a minute.

Rocking being the “macro” of vibration, for lack of a better word.

does that not imply the compliance or stiffness linearity and symmetry with excursion is important?

Not at all - a piston is meant move along an axis without rotation in any plane. Any divergence from such motion is undesirable.

 

[kazap]

Last year HiVi released DM 7500 that has similar specs and is under 100$.

Thats a more DIY friendly price. Anyone tried it?

 

[Brett]

Thats a more DIY friendly price. Anyone tried it?

And got a datasheet? I can't seem to find it but maybe my search-fu is off today.

 

[Ugg10]

@Brett info on this Aliexpress listing - note first set of info is for the DMN-A and the second for the DM7500

https://www.aliexpress.com/item/32810919938.html

 

[Juhazi]

Just as a reminder. Last year HiVi released DM 7500 that has similar specs and is under 100$.

Not really similar Fs at 800Hz https://www.audiophonics.fr/en/midr...midrange-dome-60w-5-ohm-93db-o5cm-p-4770.html

 

[Ugg10]

@Juhazi the DMN-A (2" mid dome) has an FS of 800hz but the DM7500 (3" mid dome) is 300Hz going by the data in the link I shared, your link is for the DMN-A.

There is also some distortion plots n the buyer comments at the bottom of the advert.