Kartesian Acoustic

[Ro808]

This looks impressive though.

 

[diyiggy]

In the past we have seen how Erich from diysoundgroup put together a driver with parts from different suppliers (Denovo DNA-360) that is equal or better than a comparable A-brand driver (B&C DE250).

Better than the old or the new DE250 ????

Concistency by choice or by sourcing/purchasing effect, can be a problem too, especially when one,is talking about precision like in Audio ! The Denovo could be better than the new B&C, but at the end it has a name: Cunterfeit - even if it asks some talent to do so, somewhere-

 

[ErnieM]

But they don't sell their most interesting designs to end users...

Not diy friendly in that regard.

 

[nanou64000]

It is just a question of time. If I remumber correctly, they said on their youtube channel they are going to release the high end drivers after this summer. The beautiful 10inch ablove wom250_vhe will cost 1200 euros (in my memory) and it is manufactured in France.

 

[kipman725]

This looks impressive though.

Ah so that was who was buying all the Yamaha P series amps (2nd hand prices are very elevated these days for a P7000s to the point I considered selling my rack).

 

[piotr z]

It is just a question of time. If I remumber correctly, they said on their youtube channel they are going to release the high end drivers after this summer. The beautiful 10inch ablove wom250_vhe will cost 1200 euros (in my memory) and it is manufactured in France.

... and the xmas is ruined xD



I was thinking that it'll be in the area of 300 Eur ...

 

[MrSticha]

Kartesian coaxials

Any thoughts on Cox120_vHP? An interesting mid-tweet driver for a 3-way perhaps. The cone shape with the inverted surround would allow use of additional waveguide as part of the front baffle sort of like in Genelec 8260.

Cox120_vHP | .Kartesian

 

[picowallspeaker]

The inverted surround Is for *not helping* the formation of spurious waves (diffraction at edges). This helps in case the woofer Is used in the midrange territory where the wavelenghts are of the same size' of the 'normal' surround, so from 0.5 to 1 cm, make the math...

 

[MrSticha]

Sure, but what I had in mind was to make an additional waveguide which extends from the woofer cone to the rounded edge of the front baffle. The edge of the coax cone protrudes a bit from the surround so there is enough space for a 3D printed structure. The attached picture shows the coax cone in red and the waveguide/baffle in green.

Rough idea would be to combine the coaxial driver with a woofer like wo24p as a standmount monitor and cross them at around 300Hz or so. The goal would be to control directity and minimize diffraction (and get more experience in CAD, CNC, and 3D printing).

 

[MrSticha]

Apparently pahoffma is testing something similar based on what they wrote in the Cox165_vPA thread.

As for the smaller Cox120, what kind of performance should one expect from a ring dome tweeter that is placed in the middle of the mid cone? I have not seen them being used in coaxial drivers.

 

[wolf_teeth]

In theory, it should work well. The ring-dome and ring-radiator seem to work very well in waveguided, and if this follows suit in the conical waveguiding coaxial, should also do well.

Wolf

 

[MrSticha]

That's what I figured as well, but I have a lot of gaps in my knowledge of acoustic waveguide geometries. Perhaps by the time I have filled the biggest holes, someone with more experience with coaxials shares their experience with this particular driver.

 

[Paul Ebert]

Any thoughts on the Wom120 vs. the Mid120 for the range of 400 to 3k (or so)? This would be for a 3 way with the Purifi 6.5 and the Bliesma T25B. I can wait for the Mid120, if it's a better mid, but I'm not seeing that on paper. I'm also waiting to see what Purifi might come out with in a small dedicated mid.

 

[MrSticha]

Apparently pahoffma is testing something similar based on what they wrote in the Cox165_vPA thread.

As for the smaller Cox120, what kind of performance should one expect from a ring dome tweeter that is placed in the middle of the mid cone? I have not seen them being used in coaxial drivers.

Or is the tweeter nested in the Cox120 actually a regular dome and I was just fooled by the larger proportions of the suspensions surrounding a small (1/2") dome?

Twt12_vHP | .Kartesian

 

[okomit]

It is a little pity that they don't make a 1.4" compression driver. 1.5" is a little "exotic" on my side of the pond.

Regards

Charles

Probably does not matter but their compression driver has 1.4 inch exit. In their technical drawing it says 36mm. 1.5 inch is a mistake.

 

[phase_accurate]

That changes things completely because it makes the choice of horns much larger. Its not very high efficiency leads me to the assumption that it is a design with low compression which would make it a good candidate for power HiFi.

Regards

Charles

 

[Storm Mastering]

Their small wib90_vHP, destined for a small pair of computer speaker at my home office desk.

 

[Hiperia]

Hi,

The vHE line up for "High-End" is comming soon !

Mid120_vHE at the front and Wom145_vHE in the background.

 

[Paul Ebert]

I am very interested in the Mid120_vHE. I hope it's not too expensive.

 

[Kwesi]

Me too; only serious competitor in the same ballpark is Scan Speak Illuminator 12MU/4731T00, which is around 300.- € where i live.
Hoping/Expecting that Mid120_vHE is <200.-€.
<150.-€ would be a dream...

​

Kartesian on Youtube comments, 31.01.2022:
We are currently producing 6 references from _vHE range, including Mid120_vHE. Most of them will be available by the end of February or March 15th max. We are updating all the _vHE range to make it as good as we can. The data sheet will be updated accordingly soon. We hope you will enjoy