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Floorstanding Speakers

Zu Audio Union 6 Series Pay Homage to the Past and Look Forward to the Future

Zu Audio consolidates several of its speaker lines into the Union 6. Did they make the right move? Let’s see what it offers.

Zu Audio Union 6 Series Loudspeakers Lifestyle

Zu Audio has been making loudspeakers for 22 years and we’ve been fans and customers for over a decade. Sean Casey has never played by the rules in the high-end audio world and that’s perfectly fine on our book. The pandemic has not been kind to our friends in Utah; supply chain issues have led to long delays and the end of the Omen Dirty Weekend project as well. The new Zu Union 6 lineup has been unveiled and we’re very intrigued.

The Zu Union 6 Series

Zu Audio has decided to revamp its speaker product line. Their new Zu Union 6 Series are designed to replace several recent models: Omen Dirty Weekend, Omen 2, Soul Supreme, Omen Bookshelf, Omen Center Channel, and Zu Cube

Making such a move is a big undertaking. Here is what Zu Audio had in mind:

  • Raise resolution, transparency, and tone.
  • Make each speaker unfussy with respect to room placement and connected gear.
  • Remove 12 ohms and 16-ohm models and go with the mass market 8-ohm standard.
  • Eliminate the Zu set-up task of finding the right room floor-to-speaker gap.

The Union 6 is described by Zu Audio as a “full-spectrum, highly resolving and robust floor-standing loudspeaker”. 

Zu Audio Union 6 Series Loudspeakers Lifestyle Black

Features and Specifications

  • Design: Floorstanding with North American-made composite wood, skinned with real wood veneer or epoxy.
  • Full-Range Driver: ZuCX-ND-8 10.3” coaxial paper/CNT cone, under-hung 2” (50.8 mm) coil on paper/Kapton former.
  • Tweeter: Eminence UAPT50-3
  • High-Pass Network: Single element mono pole filter (ClarityCap MR 1.0 µF)
  • Crossover: None. In addition there are no filter components on the full-range driver
  • Frequency Response: 30 – 22k Hz
  • Sensitivity: 99 dB-SPL @ 2.8V, 1m
  • Impedance: 8 ohms
  • Wavefront: Virtual point source
  • Max SPL Program: 120 dB-Z 
  • Max Input Power: 150 W / 300 W (high-pass at 50 Hz, 12 dB/octave)
  • Left/Right Pair Matching: 0.5% on drivers and 0.1% on all other components

Input Connections:

  1. ZuB3 via speakON NL8 (parallel with binding posts). 
  2. Posts that 1/4” (6.3 mm) and oversized spades, bare wire ≤ #4 AWG (5.1 mm), and banana plugs.

Size and Colors:

  • Dimensions (WDH):  12 x 12 x 36 inches (30.5 x 30.5 x 91.5 cm) – Each.
  • Weight: 60 pounds (27 kg) – Each. 
  • Available Colors: Hickory Clear, Hickory Black, Black Satin, Mercury (some may require extra charge).
  • Driver Ring Color: Silver or Black.
Zu Audio Union 6 Series Loudspeakers Finishes

Included Accessories

  • Hard plastic slip-fit driver covers
  • 1–1/2” (38 mm) adjustable carpet spikes
  • Stainless steel adjustable hard surface oval-end footers with 9/16” jam nuts (installed)

Amplifier Power Guidance

  • 4 – 10 watts for low to moderate SPL (sound pressure level)
  • 10 – 100 watts for moderate to very loud SPLs
  • 100 – 500 watts for loud to ear damagingly loud SPLs

Availability and Pricing

The Union 6 Series floorstanding loudspeakers are available direct from Zu Audio with prices starting at $2,899/pair.

Tip: Zu Audio has also indicated that a Union 6 Supreme floorstanding version starting at $3,899 as well as a Bookshelf version starting at $1,799 are expected to become available sometime in July 2022. 

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