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-   -   what kind of enclosure is Zu Omen ? (http://www.diyaudio.com/forums/full-range/211351-what-kind-enclosure-zu-omen.html)

Bigun 23rd April 2012 02:28 AM

what kind of enclosure is Zu Omen ?
 
I was reading their web site and it talks about a loading system based on automotive exhaust technology and having 'finger ports' on the bottom of the speaker. What the heck is it ?

look here: http://www.zuaudio.com/docs/Omen1-A_Specs.pdf

there's a 3-d diagram showing some kind of pyramid structure inside the enclosure, some kind of tuned cavity that's mass-loaded ?

chrisb 23rd April 2012 06:33 AM

Quote:

Originally Posted by Bigun (Post 2996884)
I was reading their web site and it talks about a loading system based on automotive exhaust technology and having 'finger ports' on the bottom of the speaker. What the heck is it ?

look here: http://www.zuaudio.com/docs/Omen1-A_Specs.pdf

there's a 3-d diagram showing some kind of pyramid structure inside the enclosure, some kind of tuned cavity that's mass-loaded ?

From the spec sheet:

Zu-Griewe driver / cabinet / room loading technology allows this high efficiency platform to give articulate and deep bass performance—attributes that have never been done in a passive, high efficiency loudspeaker system of this size. (Zu-Griewe is an acoustics technology and model originally developed for high performance competition two and four cycle engine exhaust systems for improving power output through pulse and pressure management, with increased bandwidth, while reducing noise and sound pressure levels over convention. More on the Zu- Griewe tech can be found in the FAQ section.)



simple as that!

TerryO 23rd April 2012 07:11 AM

Quote:

Originally Posted by chrisb (Post 2997022)
From the spec sheet:

Zu-Griewe driver / cabinet / room loading technology allows this high efficiency platform to give articulate and deep bass performance—attributes that have never been done in a passive, high efficiency loudspeaker system of this size. (Zu-Griewe is an acoustics technology and model originally developed for high performance competition two and four cycle engine exhaust systems for improving power output through pulse and pressure management, with increased bandwidth, while reducing noise and sound pressure levels over convention. More on the Zu- Griewe tech can be found in the FAQ section.)



simple as that!

Chris,

Didn't the late Paul Klipsch pass out big large yellow buttons at the Audio Shows that had an appropriate message on it?

Zen Mod 23rd April 2012 07:14 AM

http://www.diyaudio.com/forums/pass-...ml#post2996476

from impedance chart , it's obviously sort of "classic" BR

TerryO 23rd April 2012 07:41 AM

Quote:

Originally Posted by Zen Mod (Post 2997034)
http://www.diyaudio.com/forums/pass-...ml#post2996476

from impedance chart , it's obviously sort of "classic" BR

Dear Mr. Mod,

I'm pretty sure that they employed a variation of an Inverted Barometric Quadramodal Wave Snubber. There's really no other alignment that could allow you to reap the Fluxual Reciprocity Index figures that are just barely hinted at, but not openly stated.

One would think, that as easy as it is to adapt, that it would have become more popular.

Best Regards,
TerryO

Zen Mod 23rd April 2012 08:16 AM

I'm not saying that I'm knowledgeable enough to do the same thing with speaker , but having some xperience with resonant exhaust on 2strokers , I would expect more linear impedance ..... if construction is so strongly based on what they say .

in fact ... having right exhaust is way more challenging than making loudspeaker box , let's be real

I'm really digging their story an overall attitude/approach , but it seems that they really just invented new name for old TL

Bigun 23rd April 2012 03:43 PM

yeah, I saw the double humped impedance plot and that is quite a tell-tale for a resonant box - where TL and BR are two sides of the same coin. But what is with the pyramid ?

TerryO 23rd April 2012 05:10 PM

Quote:

Originally Posted by Bigun (Post 2997496)
yeah, I saw the double humped impedance plot and that is quite a tell-tale for a resonant box - where TL and BR are two sides of the same coin. But what is with the pyramid ?


If you take a close look at the "x-ray" drawing you'll notice that the Pyramid inside seems to be open at the top. It seems that it's a short down firing Conical Horn. The outside taper of this supposed horn evidently forms a short four sided transmission line (with some sort of stuffing?).
:2c:

Best Regards,
TerryO

zman01 23rd April 2012 06:20 PM

Bigun,

Why not just take one apart! Or would that void the warranty? :D

chrisb 23rd April 2012 07:03 PM

Quote:

Originally Posted by TerryO (Post 2997605)
If you take a close look at the "x-ray" drawing you'll notice that the Pyramid inside seems to be open at the top. It seems that it's a short down firing Conical Horn. The outside taper of this supposed horn evidently forms a short four sided transmission line (with some sort of stuffing?).
:2c:

Best Regards,
TerryO


yup, it sure looks like something that straddles more than one "classical" pigeon-hole categorization and as we've all experienced, the sonics of resonant boxes can vary a helluva lot

it'd certainly be interesting to hear them, but don't hold your breath for a "forensic reverse engineering" of the details


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