Richidoo,
I’ll link my document soon.Why is yours so expensive?Take account in what I’ll tell you now, I included it in my future realization of DTQWT-12:
I try to optimize the quality of DRIVERS that I selected. It is only my opinion, but better to choose a MOREL ET 338-137 € or AUDAX Two34X0, like yours…,
► with a capacitor-Mundorf M-CAP SUPREME SILVER / GOLD / OIL 1200Vdc 5.60 uF to 146 €
http://www.lautsprechershop.de/hifi/cond_mun_fr.htm http://www.lautsprechershop.de/pdf/morel/chassis/et338.pdf http://www.toutlehautparleur.com/audax/audax-tw034x0-p-1804.html Than a Dynaudio T330D ESOTAR to € 1400
► With Capacitors Mundorf audiophile 400VDC 5.60μF MKP MCap to 5.13 €
Not even a Jantzen Z-Superior MKP to € 23.05
http://www.toutlehautparleur.com/mcap-mkp-400v/mundorf-mcap400-560-p-4058.html http://www.lautsprechershop.de/ To my point of view, this is nonsense! Ditto for the
terminal blocks,
cables (651 bits) and the quality of
welds.
This must be beyond reproach and consistent.
Finally, the box should have
walls of 40 mm minimum and reinforcements smart!
About boxes, at the risk of repeating myself, DEAF materials are an essential basis for high quality speakers for restitution.
(The famous principle MASS / SPRING)
36 years ago, an engineer friend had used a flow line from concrete storm of Public Works. That's why I mentioned the other day speakers ELIPSON plaster with hemp tow
http://www.cerib.com/uploaded_files/basedoc/1132741572_tuyaux.pdf Indeed, they were huge (very big) !
But I kept this moment only a musical "emotional memory":
A huge sound and transparency rather striking.
What I can say is that at the time I had already several HIFI, best, and yet his coveted stuff!
He worked in military surveillance. And the components were so ... military grade.
Today, there are woven polypropylene binders and adapted to the characteristics of concrete.
We can cut and masonry at will!
Make shapes like SONUS FABER ... possible while retaining a useful litrage (volume) adapted.
From the building, there are also soundproof, pure wool.
Plates 1200 x 60 x 100 mm, the acoustic performance and very interesting price.
Honestly, I think value for money (for those who can not afford the Baltic Birtch or dolomitic marble) it must be .... CONCRETE (béton)!
I recommend also the location of CROSSOVER into the heads of speakers in a sealed boxes and a vibration-proof plate.
The capacitors are very sensitive and restitution is affected!
These are some principles, based on experience that have been approached in my choice for DTQWT-12.
