Dear Troels
Already 2 years have passed since I bought the Crossover and Driver
componnents for the CNO 2.5 build... and finally finished them a month
ago. So here are my thought about your design.
I assumed that if you called it a Cost No Object design I might as well
put everything I can in the cabinet structur, and since I am a sucker
for the old V models of Magico Loudspeaker I descided to copy as best as
I can the V2 Model design.
I went to my Local Bauhaus and found excactly what I needed, a 40mm
Plywood Beech. Heavier and denser then Birch and also about twice the
Price if not more (sadly)... Anyway I was in love!
the sconed change was using a very dense HPL-Kern Plates. As a carpenter
we use them in places wich are constantly abused because it such a
strong and wether-proof material (in Public toilets for example :) I am
pretty sure that it is excactly the same material that wilson Audio uses
and calling it M and X material.
I have sandwiched the front plate and the rear plate with it. having
10mm HPL, 30mm Multiplex and again 6mm HPL.
The inner Volume and the face plate size are of course true to your
design.
End resault is 55 kilo for a speaker, and when you tap it, it hurts :) I
do not know if all the effort and money was in vein. I do not posses
another CNO made of MDF so I can compare the two.... I just know that it
is the absolout best I could come up with and for my selfconcious it is
all that matter.
Sound wise.... I already heard a lot of very expansive stuff... but this
doesn`t sound like yet another High End Box, this Loudspeaker makes
music live. in Reproducing the humen voice it is the most honest
presentation that I`ve heard.
Ps. after a week or so I wisited a Hifi shop in Strasbourg... they had
the Passlabs SR2 loudspeakers that uses more or less the same drivers...
the retail price is 18,000 Euro!
So, thanks Troels! you saved me a looooot of Dough! this design is
Priceless and highly recommended to all who love their Music
Best of wishes from Freiburg Germany
Noam
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