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Old 5th May 2012, 08:32 PM   #1
arjen is offline arjen  Netherlands
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Default elipson 1303 sound-alike?

OK, I know this is going to be very subjective, but I can try anyway.
A long time ago (1988) I build a pair of Elipson 1303 replica's. After a couple of months I sold them to someone who preferred my finish to the retail version and I never got to making a second pair. Over the years I build several other speakers, from simple full-range single chassis sets to complex 4 or 5 way sets. But, and this is where it starts to get subjective, I never experienced the wow I had with the Elipsons. Of course none of the original speakers used in the design are available today so trying to re-create the 1303 will prove futile.
So I want to pick your experience (and this is where it gets even more subjective): what DIY design will come closest to the sound of the Elipsons.
Difficult I know, but I am ready to build a new set so I'm open to suggestions.

Tnx,

A

Last edited by arjen; 6th May 2012 at 11:39 AM.
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Old 6th May 2012, 12:28 AM   #2
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Hi A, Do you know what the original drivers where ...and now? I don't have the experience but you have to start somewhere your investigation.
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Old 6th May 2012, 08:32 AM   #3
arjen is offline arjen  Netherlands
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The original drivers were Audax. 25 mm dome tweeter, 13 cm mid and 17 cm bass if I recall correctly. But that's not very important. What I am after is asystem that sounds just like the Elipsons. I don"t care if it is a full range or a 4 way system, Im just curious if there is a DIY dezign with the same clarity, depth and clean, non-booming bass that made the 1303 a legend...
Of course if it's an exact copy of the 1303 with modern drivers I'd be double happy, but looks come second.

Tnx,

A
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Old 6th May 2012, 11:55 AM   #4
sreten is offline sreten  United Kingdom
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Click the image to open in full size.

Hi,

Not an easy speaker to copy and the bass bandpass is difficult to get right,
(and doesn't appear to be well optimised for low bass in the above cutaway).

No idea what would sound similar offhand, its very difficult to say.

rgds, sreten.
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Old 6th May 2012, 04:32 PM   #5
arjen is offline arjen  Netherlands
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It's a very difficult speaker to copy indeed. The only reason my first copy was a success was the fact that I could copy everything, from drivers and filters to the dimensions of the cabinet. The Helmholz chambers need to be adjusted for a different mid and the same goes for dimensions of the bass section.
Not an easy task, wich is why I'm hoping fo a design with similar sound rather than trying to copy the whole thing.

Tnx,

A
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Old 6th May 2012, 06:56 PM   #6
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Quote:
Originally Posted by arjen View Post
It's a very difficult speaker to copy indeed. The only reason my first copy was a success was the fact that I could copy everything, from drivers and filters to the dimensions of the cabinet. The Helmholz chambers need to be adjusted for a different mid and the same goes for dimensions of the bass section.
Not an easy task, wich is why I'm hoping fo a design with similar sound rather than trying to copy the whole thing.

Tnx,

A
I don't know if I would copy anything. But the position of the tweeter the 4 order band pass and the special caracteristics of the main driver are cool points to have in mind.

I'm looking at your speaker. And there was a version with a 13 cm bass and a newer one with a 17 cm. The 1974 version had a 13 cm woofer. The tweeter used was a 25 mm Audax. Many speakers use it nowadays, so that's not of a problem. I don't think there's a finished commercial product out there awaiting for you, but many drivers products come with design kits documentation/pdf's.

Yesterday I was looking at this driver. Yours is going to be very similar. It will be a French (or Italian/Ciare) driver and shall not be a sandwich cone (Focal). The size of your driver will probably be around the 13 cm mark. It's possible it's going to be a double cone or not. Tweeter eventually will cross high (the old one B1303 had a crossover frequency of 5KHz). Maybe 25 mm Audax and SPL to mate w/the main driver.
Supravox 135 LB
Large Bande Supravox 135 LB
CIARE PM 135 ND - 5"
And I'm showing here this 17cm bicone, that looks great (big size to complement the low frequencies summation) if you want to use it (size) instead of the small one's above ( 13 cm). Have a nice build and good time with your wise "Elipson" decisions.
Davis Acoustics 170MRP
Haut-Parleur Large Bande Davis Acoustics 170MRP
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Old 7th May 2012, 03:18 AM   #7
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For the woofer bandpass use this project from Ciare. That's all you need.
http://www.ciare.com/pdf/catalogo/MS200.pdf
http://www.ciare.com/pdf/Progetti/My...nema/S09.1.pdf
Haut-parleur 20 cm Ciare MS200
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Old 17th May 2012, 08:09 PM   #8
arjen is offline arjen  Netherlands
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Thanks for the link. I'm suddenly too busy to even think about building a new speaker, but I'll keep it in mind for later.

Cheers,

A
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Old 17th September 2012, 07:28 PM   #9
jochems is offline jochems  Netherlands
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Got anything happening on this plan?

While working at Duson (Dutch importer of Elipson) during the nineties I tried to design a follow-up on the (then already) discontinued 1303. We called it the 2606....

Let me know if you want more details.
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Old 22nd March 2014, 09:53 PM   #10
RJW is offline RJW  United Kingdom
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Default duson 2606

Quote:
Originally Posted by jochems View Post
Got anything happening on this plan?

While working at Duson (Dutch importer of Elipson) during the nineties I tried to design a follow-up on the (then already) discontinued 1303. We called it the 2606....

Let me know if you want more details.
Hi, I heard this speaker 2 times and really loved its spaciousness and relatively precise low frequency performance. But I did not like the overal tweeter caracteristic. It sounds a bit like having a mild cold flu virus. Is it a Scanspeak 9200 of 9300? Can I upgrade it with 9700 or maybe even 9900 without designing a new filter?

Thanx in advance for your support, RJW
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