Meyer Sound UPQ-D1-RMS, UPQ-D2-RMS, UPQ-D3-RMS UPQ operating guide

OPERATING INSTRUCTIONS

UPQ-D1 Wide Coverage Loudspeaker

UPQ-D2 Narrow Coverage Loudspeaker

UPQ-D3 Wide Symmetrical Coverage Loudspeaker

ULTRA

Keep these important operating instructions.

Check www.meyersound.com for updates.

© 2019
Meyer Sound. All rights reserved.
UPQ-D1/D2/D3 Operating Instructions, PN 05.291.005.01 A

The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be
construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or
inaccuracies that may appear in this manual. Except as permitted by applicable copyright law, no part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise,
without prior written permission from Meyer Sound.

CAL, Compass Go by Meyer Sound, Compass RMS, Intelligent AC, LEO-M, LEOPARD, LYON, MAPP, RMS, UltraSeries, and all alpha­numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound. Meyer Sound, Compass, Constellation,
Galileo, LEO, QuickFly, SIM, Spacemap, Thinking Sound, TruPower, Tru Sh ap in g, a nd U -S ha pi ng , ar e re gi st ered t rad em ark s of M eye r
Sound Laboratories Inc. (Reg. U.S. Pat. & Tm. Off.). All third-party trademarks mentioned herein are the property of their respective
trademark holders.

ii

UPQ-D SERIES OPERATING INSTRUCTIONS

!

!

IMPORTANT SAFETY INSTRUCTIONS

These symbols indicate important safety or operating features in this booklet and on the frame or chassis:

SYMBOLS USED

Dangerous voltages:

risk of electric shock

Gefährliche

Spannungen:

Stromschlaggefahr

Pour indiquer les

risques

résultant de tensions

dangereuses

Para indicar voltajes

peligrosos

Important operating

instructions

Hinweis auf wichtige

Punkte der

Betriebsanleitung

Instructions d'utilisation

importantes

Instrucciones

importantes

de funcionamiento y/o

Mantenimiento

Replaceable Fuse Protective earth ground Hot surface: do not

Austauschbare

Fusible remplaçable Terre de protection Surface chaude:

Fusible reemplazable Toma de tierra de

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth.

7. Do not block any ventilation openings. Install in accor­dance with Meyer Sound's installation instructions.

8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus that produce
heat.

9. Do not defeat the safety purpose of the grounding-type
plug. A grounding type plug has two blades and a third
grounding prong. The third prong is provided for your
safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete
outlet.

10. Protect the power cord from being walked on or
pinched, particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus. The
AC mains plug or appliance coupler shall remain readily
accessible for operation.

touch

Sicherung

Schutzerde Heiße Oberfläche:

protección

nicht berühren

ne pas toucher

Superficie caliente:

no tocar

11. Only use attachments/accessories specified by Meyer
Sound.

12. Use only with the caster rails or rigging specified by
Meyer Sound, or sold with the apparatus. Handles are
for carrying only.

13. Unplug this apparatus during lightning storms or when
unused for long periods of time.

14. If equipped with an external fuse holder, the replaceable
fuse is the only user-serviceable item. When replacing
the fuse, only use the same type and the same value.

15. Refer all other servicing to qualified service personnel.
Servicing is required when the apparatus has been dam­aged in any way, such as when the power-supply cord or
plug has been damaged; liquid has been spilled or
objects have fallen into the apparatus; rain or moisture
has entered the apparatus; the apparatus has been
dropped; or when for undetermined reasons the appara­tus does not operate normally.

WARNING: To re d uc e t h e ri sk of f ir e o r e le ct r ic

shock, do not expose this apparatus to rain or
moisture. Do not install the apparatus in wet or humid
locations without using weather protection equip­ment from Meyer Sound.

iii

IMPORTANT SAFETY INSTRUCTIONS

!

PowerCON Use

CAUTION: Disconnect the mains plug before

disconnecting the power cord from the loud-

speaker.

English

•To reduce the risk of electric shock, disconnect the
apparatus from the AC mains before installing audio
cable. Reconnect the power cord only after making all
signal connections.

•Connect the apparatus to a two-pole, three-wire ground­ing mains receptacle. The receptacle must be connected
to a fuse or circuit breaker. Connection to any other type
of receptacle poses a shock hazard and may violate
local electrical codes.

•Do not install the apparatus in wet or humid locations
without using weather protection equipment from Meyer
Sound.

•Do not allow water or any foreign object to get inside the
apparatus. Do not put objects containing liquid on or
near the apparatus.

•To reduce the risk of overheating the apparatus, avoid
exposing it to direct sunlight. Do not install the apparatus
near heat-emitting appliances, such as a room heater or
stove.

•If equipped with an external fuse holder, the replaceable
fuse is the only item that can be serviced by the user.
When replacing the fuse, only use the same type and
value.

•This apparatus contains potentially hazardous voltages.
Do not attempt to disassemble the apparatus. The only
user-serviceable part is the fuse if so equipped. All other
repairs should be performed only by factory-trained ser­vice personnel.

Deutsch

•Zur Minimierung der Gefahr eines elektrischen Schlages
trennen Sie das Produkt vor dem Anschluss von Audio­und/oder Steuerleitungen vom Stromnetz. Das Netzka­bel darf erst nach Herstellung aller Signalverbindungen
wieder eingesteckt werden.

•Das Produkt an eine vorschriftsgemäss installierte
dreipolige Netzsteckdose (Phase, Neutralleiter, Schut­zleiter) anschließen. Die Steckdose muss vorschrifts­gemäß mit einer Sicherung oder einem
Leitungsschutzschalter abgesichert sein. Das

Anschließen des Produkts an eine anders ausgeführte
Stromversorgung kann gegen Vorschriften verstossen
und zu Stromunfällen führen.

•Das Produkt nicht an einem Ort aufstellen, an dem es
direkter Wassereinwirkung oder übermäßig hoher Luft­feuchtigkeit ausgesetzt werden könnte, solange es sich
nicht um ein Produkt handelt, dass mit der Meyer Sound
Weather Protection Option ausgestattet ist.

•Vermeiden Sie das Eindringen von Wasser oder Fremd­körpern in das Innere des Produkts. Stellen Sie keine
Objekte, die Flüssigkeit enthalten, auf oder neben dem
Produkt ab.

•Um ein Überhitzen des Produkts zu verhindern, halten
Sie das Gerät von direkter Sonneneinstrahlung fern und
stellen Sie es nicht in der Nähe von wärmeabstrahlenden
Geräten (z.B. Heizgerät oder Herd) auf.

•Bei Ausstattung mit einem externen Sicherungshalter ist
die austauschbare Sicherung das einzige Gerät, das vom
Benutzer gewartet werden kann. Verwenden Sie beim
Austausch der Sicherung nur den gleichen Typ und
Wert.

•Dieses Gerät enthält möglicherweise gefährliche Span­nungen. Versuchen Sie nicht, das Gerät zu zerlegen. Der
einzige vom Benutzer zu wartende Teil ist die Sicherung,
falls vorhanden. Alle anderen Reparaturen dürfen nur von
im Werk geschultem Servicepersonal ausgeführt
werden.

Français

•Pour éviter tout risque d’électrocution, débranchez
l’enceinte de la prise secteur avant de mettre en place le
câble audio.Ne rebranchez le cordon secteur qu’après
avoir procédé à toutes les connexions de signal audio

•Branchez l’enceinte sur une prise murale à deux fiches et
trois conducteurs avec terre. Cette prise doit être reliée à
une ligne électrique protégée par un fusible ou un court­circuit. Utiliser une prise murale de type différent crée
des risques d’électrocution, et peut enfreindre des régle­mentations électriques locales.

•N’installez pas l’enceinte dans des endroits humides ou
en présence d’eau sans utiliser d’équipements de pro­tection adéquats fournis par Meyer Sound.

•Ne laissez pas d’eau ou d’objet étranger, quel qu’il soit,
pénétrer à l’intérieur de l’enceinte. Ne posez pas d’objet
contenant du liquide sur ou à proximité de l’enceinte.

iv

UPQ-D SERIES OPERATING INSTRUCTIONS

•Pour réduire les risques de surchauffe, évitez d’exposer
directement l’enceinte aux rayons du soleil. Ne l’installez
pas à proximité de sources de chaleur, radiateur ou four
par exemple.

•S'il est équipé d'un porte-fusible externe, le fusible rem­plaçable est le seul élément qui peut être réparé par
l'utilisateur. Lors du remplacement du fusible, n'utilisez
que le même type et la même valeur.

•Cet appareil contient des tensions potentiellement dan­gereuses. N'essayez pas de démonter l'appareil. La
seule pièce pouvant être réparée par l'utilisateur est le
fusible, s'il en est équipé.Toutes les autres réparations
doivent être effectuées uniquement par du personnel de
maintenance formé en usine.

Español

•Para reducir el riesgo de descarga eléctrica, desconecte
el aparato de la red eléctrica antes de instalar el cable de
audio. Vuelva a conectar el cable de alimentación sólo
después de realizar todas las conexiones de señal.

•Conecte el aparato a una toma de corriente de dos polos
y tres hilos con conexión a tierra. El receptáculo debe
estar conectado a un fusible o disyuntor. La conexión a
cualquier otro tipo de receptáculo representa un riesgo
de descarga eléctrica y puede violar los códigos eléctri­cos locales.

To da s l a s d em á s r ep a ra c io n es de b en se r re al i za d as ún i ­camente por personal de servicio capacitado de fábrica.

•No instale el aparato en lugares húmedos o mojados sin
usar el equipo de protección contra intemperie de Meyer
Sound.

•No permita que penetre agua u otros objetos extraños
en el interior del aparato. No coloque objetos que con­tengan líquido sobre o cerca de la unidad.

•Para reducir el riesgo de sobrecalentamiento del
aparato, evite exponerlo a la luz solar directa. No instale
la unidad cerca de aparatos que emitan calor, como un
calefactor o una estufa

•Si está equipado con un portafusibles externo, el fusible
reemplazable es el único elemento que puede ser repa­rado por el usuario. Cuando reemplace el fusible, use
solamente el mismo tipo y valor.

•Este aparato contiene voltajes potencialmente peligro­sos. No intente desmontar la unidad. La única pieza que
el usuario puede reparar es el fusible si equipado con él.

v

IMPORTANT SAFETY INSTRUCTIONS

vi

CONTENTS

UPQ-D SERIES OPERATING INSTRUCTIONS

Important Safety Instructions iii

Symbols Used iii

Chapter 1: Introduction 9

How to Use This Manual 9
The UPQ-D Series Loudspeaker 9
Integrated Amplifier and Processing 10
Rig-Ready 10
Total System Approach 10

Chapter 2: Power Requirements 13

AC Power Distribution 13
AC Connectors 14
Wiring AC Power Cables 15
Voltage Requirements 15
Current Requirements 15
Intelligent AC Power Supply 16
Electrical Safety Guidelines 17

Chapter 3: Amplification and Audio Connectors 19

Audio Connectors 19
TruPower Limiting 20
On/Status LED 21
Amplifier Cooling System 21

Chapter 4: Adding Low Frequency Control 23

Adding Subwoofers by Daisy-Chaining 23
Using a Processor 23

Chapter 5: QuickFly Rigging 25

Important Safety Considerations! 25
Basic Eye Bolt Rigging 25
UPQ-D Series Rigging Accessories 26
Pole-Mounting the UPQ-D Series 26
The MYA-UPQ Mounting Yoke 26
The MPA-UPQ Array Adapter 27

Chapter 6: RMS Remote Monitoring System 31

Compass Control Software 31
RMS Module 31
Neuron ID for RMS Module 32
Resetting the RMS Module 32

Chapter 7: System Design and Integration Tools 33

MAPP System Design Tool 33
Galileo Galaxy Network Platform 34
SIM Measurement System 34

vii

CONTENTS

Appendix A: Meyer Sound Weather Protection 35

Weather Protection Components 36
Installation Practices 36
IP Ratings 37

Appendix B: Rain Hoods 39

Rigid Rain Hood 39
Foldable Rain Hood 40

Appendix C: UPQ-D Series Specifications 41

UPQ-D Series Acoustical, Electrical, and Physical Specifications 41
UPQ-D1/D2/D3 Loudspeaker Dimensions 44
UPQ-D1/D2/D3 with Rain hood Loudspeaker Dimensions 45

viii

CHAPTER 1: INTRODUCTION

!

HOW TO USE THIS MANUAL

Make sure to read these instructions in their entirety before
configuring a Meyer Sound loudspeaker system. In
particular, pay close attention to material related to safety
issues.

As you read these instructions, you will encounter the
following icons for notes, tips, and cautions:

NOTE: A note identifies an important or useful

piece of information relating to the topic under

discussion.

TIP: A tip offers a helpful tip relevant to the

topic at hand.

CAUTION: A caution gives notice that an

action may have serious consequences and
could cause harm to equipment or personnel, or
could cause delays or other problems.

Information and specifications are subject to change.
Updates and supplementary information are available at

www.meyersound.com

Meyer Sound Technical Support is available at:

• Te l: +1 510 486.1166

• Te l: +1 510 486.0657 (after hours support)

• Web: www.meyersound.com/support

.

THE UPQ-D SERIES LOUDSPEAKER

Meyer Sound’s UPQ-D Series loudspeakers evolved from
the UPQ-1P and UPQ-2P product line, optimized using the
advanced amplifier and processing technology that made
the LEO® family an award-wining product line. The series
includes the following loudspeakers:

• UPQ-D1, which has a Constant-Q horn with

-6 dB points at 80° horizontal x 50° vertical
(-10 dB points at 100° horizontal x 60° vertical)

• UPQ-D2, which has a narrow symmetrical coverage and

a Constant-Q horn with -6 dB points at 50° x 50°
(-10 dB points at 60° x 60°)

• UPQ-D3, which has a wide symmetrical coverage and a

Constant-Q horn with -6 dB points at
80° horizontal x 80° vertical
(-10 dB points at 100° horizontal x 100° vertical)

All of the UPQ-D series feature:

• An innovative, highly efficient Class D amplifier with

reduced current draw that reproduces any sound with
linearity over a wide dynamic range

• Optimized frequency and phase response

characteristics

• Lightened cabinet weight

• A redesigned cabinet that retains the original size, grille

frame, and rigging options of previous UPQ products

Each UPQ-D Series loudspeaker offers extremely consistent
polar response and gentle coverage rolloffs that extend
uniformly out to their 10 dB points. The smooth and
consistent performance of all the horns is the result of
advanced computer modeling combined with meticulous
research in Meyer Sound’s anechoic chamber. They also
exhibit remarkably consistent beamwidth in both the
horizontal and vertical planes. The UPQ-D Series horns
deliver uniform attenuation for all frequencies outside the
specified beamwidths.

In addition to the Constant-Q horn, the loudspeakers each
feature one low frequency 15-inch neodymium magnet cone
driver and one 4-inch diaphragm compression driver, both
designed and manufactured at Meyer Sound’s Berkeley,
California headquarters. The UPQ-D1 and UPQ-D3 are
suitable for a range of sound reinforcement applications
including as front-of-house main loudspeakers in small- to
mid-sized venues, or as fill loudspeakers in larger systems.

9

CHAPTER 1: INTRODUCTION

The UPQ-D2 offers a focused beamwidth, which yields
precise coverage and minimal interaction with walls and
neighboring loudspeakers in arrays. This feature makes it an
ideal solution for small to mid-sized venues, houses of
worship, theaters, and nightclubs, as either a stand-alone
loudspeaker or as part of an array.

INTEGRATED AMPLIFIER AND PROCESSING

The proprietary two-channel, class D power amplifier yields
a total power output of 2250 W. Audio input routes through
electronic crossover and correction filters, as well as
through driver-protection circuitry. Phase-corrected
processing ensures a flat acoustical amplitude and phase
response, resulting in an exceptional impulse response and
precise imaging.

Each amplifier channel has sophisticated limiters that are
easily monitored with the limit LEDs on the unit’s rear panel.
The UPQ-D Series modular amplifier and processing
electronics incorporate Meyer Sound’s IntelligentAC™
power supply which adapts to any power voltage worldwide
and provides soft turn on and transient protection. The
UPQ-D Series use XLR 3-pin female input with male loop
output connectors.

The optional RMS™ remote monitoring system module
provides comprehensive monitoring of loudspeaker
parameters from a host computer running Compass
software. An optional XLR 5-pin connector is available to
accommodate both balanced audio and RMS signals.

®

TOTAL SYSTEM APPROACH

The UPQ-D Series loudspeakers integrate seamlessly with
other Meyer Sound products. With compatible acoustical
and performance characteristics and dedicated QuickFly
rigging hardware, the UPQ-D Series loudspeakers and other
Meyer Sound self-powered loudspeakers can provide
everything needed to design and implement systems for
optimum performance in venues of any size or shape.

TIP: Meyer Sound MAPP™ acoustical

prediction software allows for quick
determination of the coverage, frequency response,
impulse response, and maximum linear, undistorted
output of Meyer Sound loudspeakers. It also provides
useful rigging information.

In addition to smooth integration with other Meyer Sound
loudspeakers, the UPQ-D Series loudspeakers can be
supplemented with Meyer Sound subwoofers for extended
low-frequency bandwidth and headroom. UPQ-D Series
systems can be deployed in combination with the 750-LFC
very compact low-frequency control element (Figure 1),
extending the system frequency response down to 35 Hz, or
the 900-LFC compact low-frequency control element
(Figure 2), which supports frequencies down to 30 Hz.

RIG-READY

The UPQ-D1/D2/D3 loudspeakers provide extremely high
power output with low distortion in vented two-way
enclosures. The durable trapezoidal enclosures have a
slightly textured black finish, an integral stand mount
receptacle, and versatile rigging end plates. Made of
heavy-duty, high-strength, corrosion-resistant 6061T6
aluminum, the end plates incorporate threaded M10
attachment points.

QuickFly
array plate and MYA-UPQ mounting yoke. UPQ-D Series
loudspeakers are available in custom color finishes, allowing
them to blend in with any environment. Weather-protected
versions with treated-wood enclosures and a rain hood to
safeguard the rear of the loudspeaker and connectors from
the elements are also available.

10

®

rigging options include the MPA-UPQ pickup and

NOTE: Complete acoustical, electrical and

physical specifications are covered in

Appendix C on page 41.

Figure 1: The 750-LFC Very Compact Low Frequency Control Element

Figure 2: The 900-LFC Compact Low Frequency Control Element

The UPQ-D Series are supported by Meyer Sound’s MAPP
acoustical prediction program and the Galileo™ GALAXY
Network Platform loudspeaker management system. After a
Meyer Sound system is designed and installed, its
performance can be confirmed using a SIM

audio analyzer

system.

UPQ-D SERIES OPERATING INSTRUCTIONS

11

CHAPTER 1: INTRODUCTION

12

CHAPTER 2: POWER REQUIREMENTS

!

!

Neutral

Earth/Ground

Line 1 (120 V AC)

Line 3 (120 V AC)

Line 2 (120 V AC)

Loudspeaker

(120 V AC)

Loudspeaker

(120 V AC)

Loudspeaker

(120 V AC)

Neutral

Earth/Ground

Loudspeaker

(208 V AC)

Loudspeaker

(208 V AC)

Loudspeaker

(208 V AC)

Line 1 (120 V AC)

Line 3 (120 V AC)

Line 2 (120 V AC)

The UPQ-D Series loudspeakers combine advanced
loudspeaker technology with equally advanced power
capabilities. Understanding power distribution, voltage and
current requirements, and electrical safety guidelines is critical
for the safe operation of the UPQ-D Series loudspeakers.

AC POWER DISTRIBUTION

All components in an audio system (self-powered
loudspeakers, mixing consoles, and processors) must be
properly connected to an AC power distribution system,
ensuring that AC line polarity is preserved and that all
grounding points are connected to a single node or common
point using the same cable gauge (or larger) as the neutral and
line cables.

CAUTION: Make sure the voltage received by

the UPQ-D Series loudspeakers remain within
their 90–264 V AC operating range. In addition, the
ground line must always be used for safety reasons and
the line-to-ground voltage should never exceed
250 V AC (typically 120 V AC from line to ground).

CAUTION: Before applying AC power to any

Meyer Sound self-powered loudspeaker, make
sure that the voltage potential difference between the
neutral and earth-ground lines is less than 5 V AC when
using single-phase AC wiring.

120 V AC, 3-Phase Wye System (Single Line)

Line-Neutral-Earth/Ground

Figure 3 illustrates a basic 120 V AC, 3-phase Wye distribution
system with the loudspeaker load distributed across all three
phases and with each loudspeaker connected to a single line
and common neutral and earth/ground lines. This system
delivers 120 V AC to each loudspeaker.

Figure 3: 120 V AC, 3-Phase Wye System (Single Line to Loudspeakers)

120 V AC, 3-Phase Wye System (Two Lines)

Line-Line-Earth/Ground

Figure 4 illustrates a 120 V AC, 3-phase Wye distribution
system with each loudspeaker connected to two lines and a
common earth/ground line. This configuration is possible
because the UPQ-D Series tolerate elevated voltages from the
ground line and does not require a neutral line. This system
delivers 208 V AC to each loudspeaker.

NOTE: Improper grounding of connections

between loudspeakers and the rest of the audio
system may produce noise or hum, or cause serious
damage to the input and output stages of the system’s
electronic components.

Figure 4: 120 V AC, 3-Phase Wye System (Two Lines to Loudspeakers)

TIP: The 120 V AC, 3-phase Wye system with two

lines is recommended because it allows
loudspeakers to draw less current than with single-line
systems, thereby reducing voltage drop due to cable
resistance. It also excludes the potential of varying
ground to neutral voltages producing an audible hum.

13

CHAPTER 2: POWER REQUIREMENTS

Neutral

Earth/Ground

Line 1 (230 V AC)

Line 3 (230 V AC)

Line 2 (230 V AC)

Loudspeaker

(230 V AC)

Loudspeaker

(230 V AC)

Loudspeaker

(230 V AC)

!

!

230 V AC, 3-Phase Wye System (Single Line)

Line-Neutral-Earth/Ground

Figure 5 illustrates a basic 230 V AC, 3-phase Wye
distribution system with the loudspeaker load distributed
across all three phases and with each loudspeaker
connected to a single line and common neutral and earth/
ground lines. This system delivers 230 V AC to each
loudspeaker.

Figure 5: 230 V AC, 3-Phase Wye System (Single Line to Loudspeakers)

CAUTION: For 230 V AC, 3-phase Wye

systems, never connect two lines to the AC
input of a UPQ-D Series loudspeaker, as the resulting
voltage would exceed the upper voltage limit
(275 V AC) and will damage the loudspeaker.

grounded outlet. To operate safely and effectively, it is
extremely important that the entire system be properly
grounded.

The AC Input connector also supplies power to any
additional loudspeakers connected to the loudspeaker’s
gray Loop Output connector.

CAUTION: When looping AC power for

loudspeakers, do not exceed the current
capability of the AC Input connector (20 A) or the
included AC power cable (15 A). Consider the total
current draw for all loudspeakers on the circuit,
including the first loudspeaker (Table 1).

AC Loop Output (Gray)

The gray AC Loop Output connector allows multiple
UPQ-D Series loudspeakers to be looped and powered from
a single power source. The 3-conductor powerCON 20 is
rated at 20 A and uses a locking connector that prevents
accidental disconnections. For applications that require
multiple UPQ-D Series loudspeakers, connect the AC Loop
Output of the first loudspeaker to the AC Input of the second
loudspeaker and so forth.

AC CONNECTORS

The UPQ-D Series loudspeaker user panel includes two
powerCON 20 connectors (Figure 6), one for AC Input (blue)
and one for AC Loop Output (gray).

Figure 6: AC Input (Left) and AC Loop Output (Right) Connectors

AC Input (Blue)

The blue AC Input connector supplies power to a
UPQ-D Series loudspeaker. The 3-conductor powerCON 20
is rated at 20 A and uses a locking connector that prevents
accidental disconnections. A 10-foot AC power cable, rated
at 15 A, is included with each loudspeaker. If the included
AC power cable is replaced, make sure to use a cable with
the appropriate power plug (on the other end) for the region
where the unit will be operated. The UPQ-D Series require a

The maximum number of loudspeakers that can be looped
from the AC Loop Output connector is determined by the
voltage of the power source, the current draw of the looped
loudspeakers, the circuit breaker rating, and the rating of the
AC power cable connected to the first UPQ-D Series
loudspeaker (Table 1).

Ta bl e 1 : M ax i mu m U PQ-D 1/ 2/ 3 t h at C a n B e Lo o pe d w i th A C P o we r

Circuit Breaker/
Connector Rating

15 A

20 A

115 V AC 230 V AC 100 V AC

6 looped

(7 total)

9looped
(10 total)

13 looped

(14 total)

18 looped

(19 total)

5looped

(6 total)

8looped

(9 total)

NOTE: Current draw for a UPQ-D Series

loudspeaker is dynamic and fluctuates as
operating levels change. The indicated number of
loudspeakers that can be looped assumes that
operating levels are normal and not such that
loudspeakers are constantly limiting.

UPQ-D Series loudspeakers ship with a gray powerCON 20
cable mount connector, rated at 20 A, for assembling AC
looping cables. Assembled 1-meter AC looping cables
(PN 28.115.032.03) are also available from Meyer Sound.

14

UPQ-D SERIES OPERATING INSTRUCTIONS

L

N

PE

SIDE FRONT REAR

U.S./Canada, 60 Hz

Black (L)

Europe, 50 Hz

Green (E)

White (N)

Brown (L)

Blue (N)

Green/
yellow (E)

!

!

WIRING AC POWER CABLES

UPQ-D Series loudspeakers ship with a gray powerCON 20
cable mount connector, rated at 20 A, for assembling AC
looping cables (Figure 7). The pins on the powerCON 20 cable
mount connector are labeled as follows:

• L (Line)

• N (Neutral)

• PE (Protective Earth or Ground)

Figure 7: powerCON20Cable Mount Connector

How AC power cables are wired is determined by the type of
AC power distribution system used (see “AC Power
Distribution” on page 13). When wiring AC power cables for
single-line systems, use one of the wiring schemes shown in
Figure 8 and described in Table 2:

VOLTAGE REQUIREMENTS

A UPQ-D Series loudspeaker operates as intended when
receiving AC voltage within the following range:

• 90–264 V AC, 50–60 Hz

If the voltage drops below 90 V, the loudspeaker uses stored
power to continue operating temporarily; the loudspeaker
powers off if the voltage does not return to its operating range.

If the voltage rises above 275 V, the power supply could
become damaged.

CAUTION: The power source for a UPQ-D Series

loudspeaker should always operate within the
required operating range, at least a few volts from the
upper and lower limits. This approach ensures that AC
voltage variations from the service entry—or peak
voltage drops due to cable runs—will not cause the
loudspeaker’s amplifier to cycle on and off or cause
damage to the power supply.

CURRENT REQUIREMENTS

Current draw for loudspeakers is dynamic and fluctuates as
operating levels change. Because different cables and circuit
breakers heat up at varying rates, it is important to understand
the following types of current ratings and how they affect
circuit breaker and cable specifications.

Figure 8: AC Wiring Scheme

Ta bl e 2: AC W ir i ng S ch e me

Wire Color Attach to the

U.S. / Canada

60 Hz

Black Brown Hot or live (L)

White Blue Neutral (N)

Green Green and Yellow

European

50 Hz

Following

Te rm i n al

Protective earth / ground

(E or PE)

CAUTION: When wiring AC power cables and

distribution systems, it is important to preserve
AC line polarity and connect the earth ground at both
ends of the cable. A UPQ-D Series loudspeaker
requires a grounded connection. Always use a
grounded outlet and plug. It is extremely important that
the system be properly grounded to operate safely and
properly. Do not ground-lift the AC cable.

• Idle Current — The maximum rms current during idle

periods.

• Maximum Long-Term Continuous Current — The

maximum rms current during a period of at least
10 seconds. The maximum long-term continuous current is
used to calculate temperature increases for cables and to
ensure that the size and gauge of each cable conforms to
electrical code standards. This current rating is also used
to select appropriately rated, slow-reacting thermal
breakers, which are recommended for loudspeaker power
distribution. In addition, the maximum long-term
continuous current can be used to calculate the AC
looping capability for UPQ-D Series loudspeakers.

• Burst Current — The maximum rms current during a

period of around 1 second. The burst current is used as a
rating for magnetic breakers. It is also used for calculating
the peak voltage drop in long AC cable runs according to
the following formula:

V pk (drop) = I pk x R (cable total)

• Maximum Instantaneous Peak Current — A rating for

fast-reacting magnetic breakers.

15