Zu Audio Omen [Rev-B] Bookshelf Speaker Pair

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General:
Zu Audio, designed and built in the USA. is a noteworthy company in the audio industry with a unique sound signature and design language. 

They're finished beautifully and would look great in just about any room. Especially one with lots of natural sunlight.

No longer available, the Omen Bookshelf is able to play to a super nice level with as little as 12W. With no internal crossover, this is as pure of a sound you're going to get.

Includes QTY (2) protective woofer covers.

Shipping:
These speakers will ship via UPS Ground within the lower 48 US States for a flat $275 in two large boxes with custom foam inner packing designed by Zu Audio. 

If you're outside of this area please contact us for a quote as we ship worldwide. Local courier also available within 25 miles of ZIP 07452.

These speakers are exempt from any free shipping promotions. 

Mk.II [Rev-B] features changes Over Mk.I
- New nanotech sanctified composite paper cored cone assembly (Zu260FRD) driver.
- Machined aluminum nameplate with laser engraving that also facilitates ZuB3 input and parallel 5-way binding posts.
- Mission Mk.II internal cable harness, not just Mission level hookup wire.
- ClarityCap MR capacitors on the high-pass network, matched to within 1/50th of a microfarad or better.
- Revised high-pass network values for better transparency and driver blending.
- Tighter tolerancing and improved full-range driver matching algorithms for improved tone and stereophony.
(There were only a handful of Mk.II [Rev-A] were made, which were the same as the new Mk.II Rev-B save they did not include the ZuB3 input, only the 5-way binding posts. All other features are the same between Mk.II Rev-A and Mk.II Rev-B.)
Omen Bookshelf Mk.II features some pretty serious upgrades over the original. Biggest of the differences is the new nanotech sanctified composite paper cored cone driver. This new 10” full-range driver uses the same great Zu260 motor assembly, combined with our new nanometer materials matrix and proprietary lay-up gives the perfect combination of classic Zu tone and resolving transparency. The change in capacitors is also a pretty healthy step forward in treble resolution, switching from the PulseX to the ClarityCap MR. Tolerances between matched pair have also tightened up for even better stereophonic realism; now .5% match on drivers and 0.1% on all other electrical parts.

SkyFi Cosmetic Notes:
Some minor marks on the silver rings around the woofers. Overall very presentable.

Ownership:
Second Owner

Connections:
Speaker Bindiing Posts, Zub3 Connection

Cosmetic Condition:
8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab and listening room.

Included:
Just the Unit

Packing:
Will be packed using our highly developed in-house process and custom packing materials.Specs:
Bandwidth: 50 – 25,000
Efficiency: 97 dB-SPL 1W@1m
Impedance: 12 ohm
Power Amp Range: 4 – 200 watt
Made by us in our home town of Ogden, Utah—U.S.A.

Dimensions:
HWD: 18” x 12” x 12” [45.8 x 30.5 x 30.5cm]

Weight:
35 lbs.

Recommended Cables:
Kimber Kable - Speaker Cables - Good

Kimber Kable - Speaker Cables - Better

Testing Process:
Our speaker evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, dented tweeter domes, and cone damage. We also inspect the speaker connection points for loose or broken connectors.

After the initial visual inspection we connect the speakers to a reference amplifier with our preferred test tracks. With the speakers placed with proper distance we listen to each driver to make sure that they are producing the intended frequencies with no signs of distortion or rattle.

During listening tests with test tracks we check for proper stereo imaging and bass response at various listening levels. If there are any audible signs of issues, the speakers are taken to the bench where we perform a frequency sweep to isolate the issue so that it can be resolved by component repair or replacement.

Our subwoofer evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, cone damage, or rubbing voice coils. We also inspect the input connections for damage.

After the initial visual inspection we connect the sub at our bench and perform a sine wave sweep from about 200 Hz down to around 10 Hz. During this sweep we are listening for excessive rattle or other signs of improper function.

If the sweep passes we then increase the input level to evaluate how the woofer performs at high output levels. If the woofer has built-in crossover adjustments or multiple connection options these features are tested at this time.

We complete the subwoofer evaluation by feeding the unit with an audio signal in conjunction with our house music system to see how it responds to low frequency content in real world conditions while paired with a full range system.