Zu Audio UNION 6 Owner's Manual
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Zu Audio UNION 6 Owner's Manual

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UNION 6
3 6 . 0 "
O W N E R S M A N U A L [ P R E L I M V 2 ]

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  • Page 1 UNION 6 3 6 . 0 " O W N E R S M A N U A L [ P R E L I M V 2 ]...

  • Page 2: Table Of Contents

    UNION 6 Z U A U D I O U N I O N 6 & UNION 6 SUPREME OWNER’S MANUAL [PRELIMINARY V2] TABLE OF CONTENTS WELCOME AND THANK YOU INCLUDED WITH LOUDSPEAKERS DANGER - RISK OF SEVERE INJURY OR DEATH...

  • Page 3: Welcome And Thank You

    –Zu Audio PUBLICATION INFORMATION This is version PRELIM V2 of the Union 6 Owner’s Manual. The latest version of the manual can be found at www.zuaudio.com/downloads © 2023 Zu Audio All rights reserved. No part of this work may be reproduced in any form or by any means for other than your own use without the written permission of Zu Audio.
  • Page 4 SAFETY PRECAUTIONS TERMS Read and follow these precautions to use Union loudspeakers safely. Zu Audio is not liable for any failures, damages or problems caused by the use or misuse of Union loudspeakers by the purchaser or any third party.

  • Page 5: Danger - Risk Of Severe Injury Or Death

    UNION 6 OWNERS MANUAL [PRELIM V2] DANGER - RISK OF SEVERE INJURY OR DEATH DANGER - avoid electrocution by making sure your amplifier is powered down (or the amp’s power cable is disconnected) prior to disconnecting/connecting loudspeakers to it. Electrocution through touching of bare metal amplifier output posts, bare metal loudspeaker cable connectors when connected to amplifier, or bare metal loudspeaker connectors when connected to the amplifier is possible.

  • Page 6: Caution - Risk Of Minor Injury Or Property Damage

    UNION 6 OWNERS MANUAL [PRELIM V2] CAUTION - RISK OF MINOR INJURY OR PROPERTY DAMAGE CAUTION - amplifier may be damaged if the loudspeaker outputs are shorted, i.e., the red (+) and black (–) contacts of a loudspeaker cable come in direct contact with each other while the amplifier is switched on.

  • Page 7: Caution - Risk Of Property Damage

    UNION 6 OWNERS MANUAL [PRELIM V2] CAUTION - RISK OF PROPERTY DAMAGE CAUTION - do not use the tops of your loudspeakers as a bar table, condensation forming on a container will pool and may cause water damage to the finish, especially wood veneer finishes.

  • Page 8: Union's Design Overview

    Eliminates the traditional Zu setup task of finding the right floor-to-speaker gap for your room. We accomplished all of that with the Union 6. We kept the funk and fun that has always attracted people to Zu, and eliminated the fuss that deterred some others.

  • Page 9: Union / Union Supreme Differences

    UNION 6 OWNERS MANUAL [PRELIM V2] UNION / UNION SUPREME DIFFERENCES Union and Union Supreme are designed and built around the critical human voice (A1, 55 Hz, through A6 and all the possible harmonics, to approximately 10k Hz). Serving this critical region of tone is Zu’s 10”...

  • Page 10: Break-In / Burn-In

    Union 6 receive a minimum of 300 hours of factory burn-in. Union 6 Supreme receive a minimum of 400 hours of factory burn-in. We discourage the use of any special burn-in specific program material—...
  • Page 11 UNION 6 OWNERS MANUAL [PRELIM V2] BURN-IN MAIN POINTS Here are some points to help inform and guide your setup, tuning and burn-in expectations. Effecting the speaker’s transition from sounding new to sounding full and engaging include: • The length of time played •...
  • Page 12 UNION 6 OWNERS MANUAL [PRELIM V2] BURN-IN / GENERAL OBSERVATIONS Predictive speaker qualities regarding the schedule and impact of burn-in seams to be efficiency and the extent to which speaker-level electrical filtering is employed. A speaker’s sensitivity to electric power inputted and the resulting sound levels outputted is colloquially declared as efficiency.
  • Page 13 UNION 6 OWNERS MANUAL [PRELIM V2] UNION-6 BURN/BREAK-IN PROFILE [HOURS] 1000 UNION-6 LOUDSPEAKER SYSTEM FATIGUE PROFILE [HOURS] Dynamics break-in profile average (driver's suspension and membrane) Electronic break-in profile average (capacitor, dielectric/cable harness) Electronic variability Performance zone End of life (perminanet magnet fade, suspension breakdown or exessive membrane shear...

  • Page 14: Initial Union 6 Placement

    UNION 6 OWNERS MANUAL [PRELIM V2] INITIAL UNION 6 PLACEMENT This is an overview, to get your new speakers up and running and sounding good enough. An expanded Zu speaker placement section is further in the manual. Start with the Union speakers placed where you’ve visualized them, likely flanking that rack you have, and hopefully symmetrical.
  • Page 15 UNION 6 OWNERS MANUAL [PRELIM V2] 128 5/8 [3] PIVOT INSIDE FRONT CORNER 80° 60° 40° Page 15...

  • Page 16: Connecting Your Amp And Speakers

    Turn off your amp to reduce the chance of shorting the connectors and damaging your amp. Union 6 and Union Supreme 6 feature 5-way binding posts and ZuB3 via speakON NL8 connectors. 5-way binding posts are connected in parallel with the ZuB3.

  • Page 17: Zub3 Connector Detail

    UNION 6 OWNERS MANUAL [PRELIM V2] ZuB3 CONNECTOR DETAIL ZUB3 CONNECTOR PINOUTS NOTE: We highly recommend factory termination or retermination of your Zu loudspeaker cable. However, ZuB3 via Neutrik® speakON® termination convention is outlined for your DIY reference. ZUB3 VIA SPEAKON NL8 8-POLE TERMINATION CONVENTION Pin-outs for ZuB3 via Neutrik®...

  • Page 18: Amplification Guidance

    UNION 6 OWNERS MANUAL [PRELIM V2] AMPLIFICATION GUIDANCE AMPLIFICATION MATCHING WITH UNION An often asked question is which amp should I match up with the Union. This is not a simple question as you need to factor in the rest of the system —room, the sound qualities you value and how loud you play, or how loud would like to be able to play.

  • Page 19: Loudspeaker Cable Guidance

    UNION 6 OWNERS MANUAL [PRELIM V2] LOUDSPEAKER CABLE GUIDANCE KEY POINTS ABOUT SPEAKER CABLE FOR YOUR UNION 6 • Start with what you have. Owned and close at hand is a good place to begin. • Shorter speaker cables are better than longer, but don’t short yourself. Having a bit of extra cable so you can put the speakers where they sound best within your room is a bigger factor.
  • Page 20 Page 20...

  • Page 21: Loudspeaker/Room Tuning

    UNION 6 OWNERS MANUAL [PRELIM V2] LOUDSPEAKER/ROOM TUNING Most of what you will do in room tuning is about timbre—the frequency domain. Knowing what you can affect and what you can’t, or shouldn’t, will help you make quick and sound choices. Before we get into the recommended ways to room tune, we need to understand where in the note we’re working.
  • Page 22 UNION 6 OWNERS MANUAL [PRELIM V2] TUNING / PLACEMENT OF UNION IN YOUR HOME - ZU MONO-AND-MIRROR METHOD The Zu Mono and Mirror speaker position tuning method is efficient, yielding excellent results without days of fiddling. With speaker placement tuning you are affecting how the wavefronts initially hit the primary listening position, and also how the room’s acoustic properties affect and interplay with the...
  • Page 23 UNION 6 OWNERS MANUAL [PRELIM V2] BASS TUNING Select recordings with large amounts of low frequency information; dramatic pipe organ and dance music work as do test recordings that have warbled low frequency tracks (20 - 100 Hz range). But do not use test tones exclusively, your brain needs some transients for contexts to do its best work.
  • Page 24 UNION 6 OWNERS MANUAL [PRELIM V2] MIDRANGE TUNING Now that the lower octaves (bass decade) are sounding good , turn your attention to getting natural and vibrant midrange. Remember midrange tuning is a dance of inches [decimeters and centimeters], somewhat similar to what we did tuning the bass but finer strokes, and we also begin messing with directivity aspects of the wavefront—the firing axis.
  • Page 25 UNION 6 OWNERS MANUAL [PRELIM V2] TREBLE TUNING At this point you are done nudging the speakers position, treble tuning is mostly about the speakers firing axis, the toe and cant (lean-back) and elevation. The experience you gained with toe when tuning midrange will help you hear the more subtle aspects of treble tuning.
  • Page 26 UNION 6 Z U A U D I O U N I O N 6 & UNION 6 SUPREME OWNER’S MANUAL [PRELIMINARY V2] UNION-6 SUPREME LOUDSPEAKER SPECIFICATIONS Dimensions H x W x D 12 x 12 x 36 inches [30.5 x 30.5 x 91.5 cm] Weights &...

  • Page 27: Union-6 Loudspeaker Specifications

    UNION 6 Z U A U D I O U N I O N 6 & UNION 6 SUPREME OWNER’S MANUAL [PRELIMINARY V2] UNION-6 LOUDSPEAKER SPECIFICATIONS Dimensions H x W x D 12 x 12 x 36 inches [30.5 x 30.5 x 91.5 cm] Weights &...
  • Page 28 UNION 6 Z U A U D I O U N I O N 6 & UNION 6 SUPREME OWNER’S MANUAL [PRELIMINARY V2] UNION-6 LOUDSPEAKER SPECIFICATIONS Zu Union-6 Impedance Curve Raw (No Filters, No Smoothing) Ω 1k Hz Zu Union-6 Complete Electromechanical Impulse Response Raw (No Filters, No Smoothing)

  • Page 29: Warranty

    UNION 6 OWNERS MANUAL [PRELIM V2] WARRANTY Zu Union loudspeakers have a five year limited warranty from the date of purchase to the original owner. If under normal home use there becomes a problem with drivers, cabinet or other parts Zu will assist in fixing or replacing the product.
  • Page 30 Z U A U D I O O g d e n C o m m e r c i a l I n d u s t r i a l P a r k 3 3 5 0 S . 1 5 0 0 W . O g d e n , U T 8 4 4 0 1 —...

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Union 6 supreme

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