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Old 23rd April 2012, 01:28 AM   #1
Bigun is offline Bigun  Canada
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Default 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 ?
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Last edited by Bigun; 23rd April 2012 at 01:30 AM.
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Old 23rd April 2012, 05:33 AM   #2
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by Bigun View Post
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!
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Old 23rd April 2012, 06:11 AM   #3
TerryO is offline TerryO  United States
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Quote:
Originally Posted by chrisb View Post
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?
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Old 23rd April 2012, 06:14 AM   #4
Zen Mod is offline Zen Mod  Serbia
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The Pass Pub: The High-End Off Topic Thread

from impedance chart , it's obviously sort of "classic" BR
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Old 23rd April 2012, 06:41 AM   #5
TerryO is offline TerryO  United States
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Originally Posted by Zen Mod View Post
The Pass Pub: The High-End Off Topic Thread

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.

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TerryO
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Old 23rd April 2012, 07:16 AM   #6
Zen Mod is offline Zen Mod  Serbia
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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
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Old 23rd April 2012, 02:43 PM   #7
Bigun is offline Bigun  Canada
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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 ?
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Old 23rd April 2012, 04:10 PM   #8
TerryO is offline TerryO  United States
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Quote:
Originally Posted by Bigun View Post
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?).


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Old 23rd April 2012, 05:20 PM   #9
zman01 is offline zman01  Bangladesh
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Bigun,

Why not just take one apart! Or would that void the warranty?
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Old 23rd April 2012, 06:03 PM   #10
chrisb is offline chrisb  Canada
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Quote:
Originally Posted by TerryO View Post
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?).


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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