Page 1
OPERATING INSTRUCTIONS
MM-4XP Miniature Loudspeaker
MPS-488 Power Supply
INDUSTRIAL SERIES
Keep these important operating instructions.
Check www.meyersound.com for updates.
Page 2
DECLARATION OF CONFORMITY ACCORDING TO ISO/IEC GUIDE 22 AND EN 45014
European Office:
Meyer Sound Lab. GmbH
Carl Zeiss Strasse 13
56751 Polch, Germany
Made by Meyer Sound Laboratories
Berkeley, California USA
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Pending
Manufacturer’s Name:
Meyer Sound Laboratories Inc.
Manufacturer’s Address:
2832 San Pablo Avenue
Berkeley, CA 94702-2204, USA
Declares that the products
Product Name: MM-4XP
MPS-488
P
MPS-488E
Product Options: All
Conforms to the following Product Specifications
Safety: EN 60065: 2002
IEC 60065: 2005
UL 60065: 2006
EMC: EN 55103-1: 1997 emission (1)
EN 55103-2: 1997 immunity (2)
This device complies with EN 55103-1 & -2. Operation is subject to
the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation.
Supplementary Information
The product herewith complies with the requirements of the Low
Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC.
Office of Quality Manager
Berkeley, California USA
May 1, 2007
European Contact: Your local Meyer Sound dealer or Meyer Sound
Germany, GmbH. Carl Zeiss Strasse 13, 56751 Polch, Germany.
Telephone: 49.2654.9600.58 Fax: 49.2654.9600.59
Environmental specifications for Meyer Sound Electronics products
Operating Temperature 0° C to +45° C
Non operating Temperature <–40° C or >+75° C
Humidity to 95% at 35° C
Operating Altitude to 4600 m (15,000 ft)
Non operating Altitude to 6300 m (25,000 ft)
Shock 30 g 11 msec half-sine on
each of 6 sides
Vibration 10 Hz to 55 Hz (0.010 m peak-
to-peak excursion)
© 2007
Meyer Sound. All rights reserved.
MM-4XP Miniature Loudspeaker Operating Instructions
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.
Compass, Galileo, and all alpha-numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound. Meyer
Sound, the Meyer Sound wave logo, and SIM are registered trademarks of Meyer Sound Laboratories Inc. (Reg. U.S. Pat. & Tm. Off.). All
third-party trademarks mentioned herein are the property of their respective trademark holders.
Printed in the U.S.A.
Part Number: 05.163.005.01 A
ii
Page 3
SYMBOLS USED
!
!
These symbols indicate important safety or operating features in this booklet and on the chassis:
Dangerous voltages: risk of elec-
tric shock
Pour indiquer les risques résult-
ant de tensions dangereuses
Warnung vor gef
trischer Spannung
Para indicar voltajes peligrosos Instrucciones importantes de fun-
ährlicher elek-
Important operating instructions Frame or chassis Protective earth ground
Pour indequer important instruc-
tions
Wichtige Betriebsanweisung oder
Gebrauchsanleitung
cionamiento y/o manteniento
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this loudspeaker 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.
Masse, châssis Terre de protection
Rahmen oder Geh
Armadura o chassis Tierra proteccionista
äuse
Masse Schutzleiter
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 loudspeaker. Handles are
for carrying only.
CAUTION: Rigging should only be done by
experienced professionals.
13.Unplug this loudspeaker during lightning storms or when
unused for long periods of time.
14.Refer all servicing to qualified service personnel. Servicing is required when the loudspeaker 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 loudspeaker; rain or moisture has
entered the loudspeaker; the loudspeaker has been
dropped; or when for undetermined reasons the loudspeaker does not operate normally.
10.Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the
point where they exit from the loudspeaker. The AC
mains plug or appliance coupler shall remain readily
accessible for operation.
iii
Page 4
SAFETY SUMMARY
English
■ To reduce the risk of electric shock, dis-
connect the loudspeaker from the AC
mains before installing audio cable.
Reconnect the power cord only after
making all signal connections.
■ Connect the loudspeaker 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 loudspeaker 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 loudspeaker. Do not
put objects containing liquid on or near
the unit.
■ To reduce the risk of overheating the
loudspeaker, avoid exposing it to direct
sunlight. Do not install the unit near
heat-emitting appliances, such as a
room heater or stove.
■ This loudspeaker contains potentially
hazardous voltages. Do not attempt to
disassemble the unit. The unit contains
no user-serviceable parts. Repairs
should be performed only by factorytrained service personnel.
Français
■ Pour réduire le risque d’électrocution,
débrancher la prise principale de l’hautparleur, avant d’installer le câble d’interface allant à l’audio. Ne rebrancher le
bloc d’alimentation qu’après avoir
effectué toutes les connections.
■ Branchez l’haut-parleur dans une prise
de courant à 3 dérivations (deux pôles
et la terre). Cette prise doit être munie
d’une protection adéquate (fusible ou
coupe-circuit). Le branchement dans
tout autre genre de prise pourrait
entraîner un risque d’électrocution et
peut constituer une infraction à la réglementation locale concernant les installations électriques.
■ Ne pas installer l’haut-parleur dans un
endroit où il y a de l’eau ou une humidité excessive.
■ Ne pas laisser de l’eau ou tout objet
pénétrer dans l’haut-parleur. Ne pas
placer de r´cipients contenant un liquide
sur cet appareil, ni à proximité de celuici.
■ Pour éviter une surchauffe de l’haut-
parleur, conserver-la à l’abri du soleil.
Ne pas installer à proximité d’appareils
dégageant de la chaleur tels que radiateurs ou appareils de chauffage.
■ Ce haut-parleur contient des circuits
haute tension présentant un danger. Ne
jamais essayer de le démonter. Il n’y a
aucun composant qui puisse être
réparé par l’utilisateur. Toutes les réparations doivent être effectuées par du
personnel qualifié et agréé par le constructeur.
Deutsch
■ Um die Gefahr eines elektrischen
Schlages auf ein Minimum zu
reduzieren, den Lautsprecher vom
Stromnetz trennen, bevor ggf. ein
Audio-Schnittstellensignalkabel angeschlossen wird. Das Netzkabel erst
nach Herstellung aller Signalverbindungen wieder einstecken.
■ Der Lautsprecher an eine geerdete
zweipolige Dreiphasen-Netzsteckdose
anschließen. Die Steckdose muß mit
einem geeigneten Abzweigschutz
(Sicherung oder Leistungsschalter) verbunden sein. Der Anschluß der unterbrechungsfreien Stromversorgung an
einen anderen Steckdosentyp kann zu
Stromschlägen führen und gegen die
örtlichen Vorschriften verstoßen.
■ Der Lautsprecher nicht an einem Ort
aufstellen, an dem sie mit Wasser oder
übermäßig hoher Luftfeuchtigkeit in
Berührung kommen könnte.
■ Darauf achten, daß weder Wasser noch
Fremdkörper in das Innere den
Lautsprecher eindringen. Keine
Objekte, die Flüssigkeit enthalten, auf
oder neben die unterbrechungsfreie
Stromversorgung stellen.
■ Um ein Überhitzen dem Lautsprecher
zu verhindern, das Gerät vor direkter
Sonneneinstrahlung fernhalten und
nicht in der Nähe von wärmeabstrahlenden
■ Haushaltsgeräten (z.B. Heizgerät oder
Herd) aufstellen.
■ Im Inneren diesem Lautsprecher herr-
schen potentiell gefährliche Spannungen. Nicht versuchen, das Gerät zu
öffnen. Es enthält keine vom Benutzer
reparierbaren Teile. Reparaturen dürfen
nur von ausgebildetem Kundenienstpersonal durchgeführt werden.
Español
■ Para reducir el riesgo de descarga eléc-
trica, desconecte de la red de voltaje el
altoparlante antes de instalar el cable
de señal de audio. Vuelva a conectar la
alimentacion de voltaje una vez efectuadas todas las interconexiones de
señalizacion de audio.
■ Conecte el altoparlante a un tomacorri-
ente bipolar y trifilar con neutro de
puesta a tierra. El tomacorriente debe
estar conectado a la protección de derivación apropiada (ya sea un fusible o un
disyuntor). La conexión a cualquier otro
tipo de tomacorriente puede constituir
peligro de descarga eléctrica y violar los
códigos eléctricos locales.
■ No instale el altoparlante en lugares
donde haya agua o humedad excesiva.
■ No deje que en el altoparlante entre
agua ni ningún objeto extraño. No
ponga objetos con líquidos encima de
la unidad ni cerca de ella.
■ Para reducir el riesgo de sobrecalen-
tamiento, no exponga la unidad a los
rayos directos del sol ni la instale cerca
de artefactos que emiten calor, como
estufas o cocinas.
■ Este altoparlante contiene niveles de
voltaje peligrosos en potencia. No
intente desarmar la unidad, pues no
contiene piezas que puedan ser repardas por el usuario. Las reparaciones
deben efectuarse únicamente por parte
del personal de mantenimiento capacitado en la fábrica.
iv
Page 5
CONTENTS
Chapter 1: Introduction 7
How to Use This Manual 7
the MM-4XP Miniature Loudspeaker 7
Chapter 2: The MPS-488 Power Supply 9
The MPS-488 Front Panel 9
The MPS-488 Rear Panel 9
MPS-488 Current Draw 12
Safety Issues 13
Chapter 3: The MM-4XP Loudspeaker 15
The MM-4XP Connector 15
The MM-4XP LED 16
Connecting MM-4XP Loudspeakers to the MPS-488 17
Chapter 4: Mounting the MM-4XP 19
Important Safety Considerations 19
Mounting the MM-4XP with the MUB-MM4XP U-Bracket 19
Appendix A: Specifications 21
MM-4XP Specifications 21
MPS-488 Specifications 22
Appendix B: MM-4XP Accessories 23
MM-4XP Accessories 23
MM-4XP Cable Connectors and Adapters 23
MM-4XP Cables 24
Appendix C: MM-4XP Cable Assembly 25
Assembling EN3-to-Phoenix Loudspeaker Cables 25
Assembling EN3-to-EN3 Loudspeaker Cables 27
v
Page 6
CONTENTS
vi
Page 7
CHAPTER 1: INTRODUCTION
!
HOW TO USE THIS MANUAL
Make sure to read these operating instructions in their
entirety before configuring a loudspeaker system with
MM-4XPs. In particular, pay close attention to material
related to safety issues.
As you read these operating 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 on the
Meyer Sound
®
website:
THE MM-4XP MINIATURE LOUDSPEAKER
The MM-4XP miniature loudspeaker is a self-powered loudspeaker designed for high-quality distributed systems.
Housed in a compact aluminum enclosure, the MM-4XP is
especially suitable for installations involving space limitations and visibility concerns. The loudspeaker’s proprietary
4-inch cone transducer, manufactured at Meyer Sound's
Berkeley factory, delivers an impressive maximum peak SPL
of 113 dB (measured with music referred to 1 meter), and
has a wide operating frequency range of 120 Hz to 18 kHz
with very low distortion. The MM-4XP exhibits the same high
intelligibility and flat frequency and phase responses for
which Meyer Sound loudspeakers are known. Peak and rms
limiters regulate loudspeaker temperatures and excursion,
ensuring that the MM-4XP performs exceedingly well even
when driven into overload.
http://www.meyersound.com
Meyer Sound Technical Support is available at:
■ Te l: +1 510 486.1166
■ Fax: +1 510 486.8356
■ Email: techsupport@meyersound.com
MM-4XP Loudspeaker
The MM-4XP's amplifier and signal-processing circuits are
designed to store DC power and tolerate voltage drops,
thereby accommodating light-gauge cables and long cable
runs. The MM-4XP receives balanced audio and DC power
from a SwitchCraft
®
EN3™ 5-pin male connector on its rear
panel. The sealed EN3 connector provides protection
against harsh environmental conditions when the MM-4XP
is installed outdoors.
7
Page 8
CHAPTER 1: INTRODUCTION
MM-4XP loudspeaker systems require an MPS-488 external
power supply. The single-space 19-inch rack unit receives
eight channels of balanced audio from its XLR female inputs
and routes the audio, along with 48 V of DC power, to its
eight Channel Outputs. The outputs — equipped with either
Phoenix 5-pin male connectors on the MPS-488
EN3 5-pin female connectors on the MPS-488
P model, or
E model —
can deliver DC power to the MM-4XP loudspeakers at cable
lengths of up to 300 feet with just 1 dB of loss in peak SPL
using 18 AWG wire. The use of composite multiconductor
cables (such as Belden
®
1502) allows a single cable to carry
both audio and DC power to the MM-4XP. Longer cable
lengths are possible for moderate applications that don't
drive the loudspeakers to maximum output, or for installations with heavier wire gauges.
MPS-488P Power Supply
The MPS-488 front panel has two LEDs per output channel
that provide useful feedback on the status of the system.
The Voltage LEDs indicate when voltage is present for each
output channel. The Load Current LEDs indicate when a
loudspeaker is connected to an output and glow brighter as
the signal level increases.
The MM-4XP’s extruded aluminum enclosure acts as a heat
sink to dissipate heat from the driver's voice coil. The enclosure is available in standard white or black anodized finishes
with a perforated steel grille. It can also be custom painted
to match specific color schemes. The MUB-MM4XP Ubracket mounts the loudspeaker on walls and ceilings at
adjustable angles. The U-bracket is also available in standard white or black anodized finishes and custom colors.
MM-4XP Loudspeaker Mounted with MUB-MM4XP U-Bracket
8
Page 9
CHAPTER 2: THE MPS-488 POWER SUPPLY
The MPS-488 power supply was designed to deliver DC
power and balanced audio to up to eight MM-4XP loudspeakers. The MPS-488 is a switched-mode regulated
power supply that occupies one space in a standard 19-inch
rack. There are two MPS-488 models available: the
MPS-488
tors, and the MPS-488
P, which has Phoenix 5-pin male output connec-
E, which has EN3 5-pin female output
connectors.
THE MPS-488 FRONT PANEL
The MPS-488 front panel includes a power switch, LEDs for
monitoring each of the eight loudspeaker channels, and
fuses for each channel.
MPS-488P Power Supply Front Panel
AC Power
The MPS-488 is powered on and off with the AC Power
switch.
Voltage and Load Current LEDs (1–8)
The Voltage and Load Current LEDs are useful for verifying
whether each of the eight Channel Outputs have voltage
and whether the connected MM-4XP loudspeakers are
receiving DC power and audio.
Load Current LEDs (1–8)
The green Load Current LEDs indicate whether a loudspeaker is connected to the channel and receiving power.
As a channel’s audio signal increases, its LED glows
brighter. If an LED is not lit, check that the channel’s Voltage
LED is lit (the fuse is working) and verify the cable connection to the loudspeaker.
Fuse Slow Blow (1–8)
Each loudspeaker channel is protected with its own fuse. A
maximum of one loudspeaker can be connected per channel; connecting more than that could cause the fuse to be
tripped.
NOTE: When replacing fuses, make sure to
use a 2-amp, 250-volt slow-blow fuse (T2A250V). These fuses are available from Meyer Sound
(PN 420.027).
THE MPS-488 REAR PANEL
The MPS-488 rear panel includes an AC connector, eight
Channel Inputs for receiving source audio, and eight Channel Outputs for delivering DC power and balanced audio to
the MM-4XP loudspeakers. The rear panel is different for the
two MPS-488 models: the MPS-488
male output connectors, and the MPS-488
female output connectors.
P has Phoenix 5-pin
E has EN3 5-pin
MPS-488 Channel LEDs and Fuses
Voltage LEDs (1–8)
The blue Voltage LEDs indicate whether voltage is present
for each of the eight Channel Outputs. These LEDs should
be lit when the MPS-488 is powered on. If a channel is not
lit, its fuse may need to be replaced. If a group of two Voltage LEDs is not lit (1–2, 3–4, 5–6 or 7–8), one of the four
MPS-488 internal power supplies may have failed.
MPS-488P Power Supply Rear Panel
MPS-488
E Power Supply Rear Panel
AC Input
The MPS-488 has a PowerCon twist-lock AC connector
(line, neutral/line, earth). The connector can accept different
power cord types for outlets used throughout the world.
Make sure to use the correct power cord for the AC power in
your area. The MPS-488 operates at an AC voltage range of
100–240 V at 50–60 Hz.
9
Page 10
CHAPTER 2: THE MPS-488 POWER SUPPLY
1234 1234
1 2 34 1134
XX
1 23 41114
XX XX
1 23 4 1111
XX XX XX
Channel Inputs
Up to eight channels of balanced audio are received via the
MPS-488’s eight Channel Inputs. The inputs are equipped
with XLR female connectors (pin 1, ground; pin 2, signal
positive; pin 3, signal negative) and have an input impedance of 10 kOhms. Make sure to use standard balanced
XLR cables with all three pins connected on both ends.
MPS-488 Channel Inputs
Channel Inputs default to being routed to their corresponding Channel Outputs but can also be routed to adjacent outputs with the Link switches, though this affects their input
impedance (see “Input Impedance for Linked Channel
Inputs” on page 11).
Link Switches
Link switches determine how Channel Inputs are routed to
Channel Outputs. When a Channel Input’s Link switch is disabled (set to the down position), the input is only routed to
its corresponding Channel Output (for example, Channel
Input 1 routed to Channel Output 1). When a Link switch is
enabled (set to the up position), the input is routed to its corresponding Channel Output and the next adjacent Channel
Output. If multiple, adjacent Link switches are enabled, the
input is routed to each adjacent Channel Output.
How Linked Input Channels Are Routed
The following examples illustrate how the Link switches for
Input Channels 1–4 can be used to affect their routing to
Channel Outputs.
■ When Link switches 1–3 are off, Channel Inputs 1–4 are
routed to their corresponding Channel Outputs.
■ When Link switch 1 is on and Link switches 2–3 are off,
Channel Input 1 is routed to Channel Outputs 1–2, and
Channel Inputs 3–4 are routed to their corresponding
Channel Outputs. Channel Input 2 is inactive.
■ When Link switches 1–2 are on and Link switch 3 is off,
Channel Input 1 is routed to Channel Outputs 1–3, and
Channel Input 4 is routed to Channel Output 4. Channel
Inputs 2 and 3 are inactive.
MPS-488 Audio Input
NOTE: Channel Inputs are inactive when the
Link switch for their preceding Channel Input is
enabled. Connections should not be made to inactive
Channel Inputs.
10
■ When Link switches 1–3 are on, Channel Input 1 is
routed to Channel Outputs 1–4. Channel Inputs 2–4 are
inactive.
Page 11
MM-4XP OPERATING INSTRUCTIONS
1 2 3 4 1133
XXXX
■ When Link switches 1 and 3 are on and Link switch 2 is
off, Channel Input 1 is routed to Channel Outputs 1–2,
and Channel Input 3 is routed to Channel Outputs 3–4.
Channel Inputs 2 and 4 are inactive.
Common Routing Examples
Table 1 lists some of the more common routing applications
for the MPS-488 Link switches.
Table 1: MPS-488 Routing Examples
Routing
Application
INs 1–8 to
OUTs 1–8
IN 1 to OUTs 1–4,
IN 5 to OUTs 5–8
IN 1 to OUTs 1–2,
IN 3 to OUTs 3–4,
IN 5 to OUTs 5–6,
IN 7 to OUTs 7–8
IN 1 to OUTs 1–8OnOnOnOnOnOnOn
Link 1Link 2Link 3Link 4Link 5Link 6Link
7
Off Off Off Off Off Off Off
On On On Off On On On
On Off On Off On Off On
Input Impedance for Linked Channel Inputs
When a Link switch is enabled, the Channel Input’s unbuffered source signal is transmitted in parallel to each linked
Channel Output. This causes the Channel Input’s impedance (normally 10 kOhms for one MM-4XP) to be reduced
for each linked Channel Output. For example:
■ 1 Channel Output, 10 kOhm input impedance
■ 2 Channel Outputs, 5 kOhm input impedance
■ 4 Channel Outputs, 2500 ohms input impedance
■ 8 Channel Outputs, 1250 ohms input impedance
To avoid distortion when linking Channel Inputs, make sure
the source device can drive the total load impedance of the
linked MM-4XP loudspeakers. The source device must be
capable of delivering a minimum of 16 dBV (6.3 V rms into
600 ohms) to yield the maximum peak SPL over the operating bandwidth of the loudspeaker.
NOTE: Most source devices are capable of
driving loads no smaller than 10 times their
output impedance. To drive eight MM-4XPs linked
from a single Channel Input, the source device should
have an output impedance of approximately
100 ohms or less.
For large loudspeaker systems with many loudspeakers, a
loudspeaker management system like Meyer Sound’s
®
Galileo
is recommended. Galileo audio outputs can drive
two MPS-488 power supplies with all Channel Outputs
linked (a total of 16 MM-4XP loudspeakers). Therefore, a
single Galileo with 16 audio outputs can drive 32 MPS-488
power supplies and 256 MM-4XP loudspeakers.
Galileo Loudspeaker Management System
Meyer Sound’s Galileo loudspeaker management system is
a comprehensive solution for driving and aligning loudspeaker systems, especially those comprised of Meyer
Sound self-powered loudspeakers. The Galileo 616 is a twospace rack unit with six inputs and 16 low-latency outputs.
Processing for the outputs includes gain, polarity, delay,
high- and low-pass filters, equalization (parametric and
TruShaping), and atmospheric correction.
Galileo 616
The Galileo 616 can be controlled from its intuitive front
panel or from the extensive Compass™ software running on
a Windows or Mac
interfaces seamlessly with Meyer Sound’s SIM
®
computer. The Galileo system also
®
3 audio
analyzer.
11
Page 12
CHAPTER 2: THE MPS-488 POWER SUPPLY
!
Channel Outputs
The eight Channel Outputs deliver DC power (48 V DC) and
balanced audio to up to eight loudspeakers. Each Channel
Output can drive one MM-4XP loudspeaker and is equipped
with either Phoenix 5-pin male connectors (on the
MPS-488
MPS-488
MPS-488P Channel Outputs
The MPS-488P Channel Outputs use Phoenix 5-pin male
connectors with three pins for balanced audio (positive,
negative, and shield) and two for DC Power (positive and
negative). These pins are clearly labeled on the MPS-488
rear panel. A single composite cable (such as Belden 1502)
wired for both DC power and balanced audio can be used to
connect to each MM-4XP.
P model) or EN3 5-pin male connectors (on the
E model).
CAUTION: When wiring cable connections for
the MPS-488 Channel Outputs, it is extremely
important that each pin in the connector is wired correctly. Make sure the 48 V DC from the MPS-488 is
wired directly (and only) to the 48 V DC pins on the
MM-4XP connector, and that the polarity is observed
(negative to negative, positive to positive) to avoid
damage to the loudspeaker. In addition, make sure
the audio pins are wired correctly; polarity reversals
for audio signals can affect system performance.
P
MPS-488E Channel Outputs
The MPS-488E Channel Outputs use EN3 5-pin female connectors with three pins for balanced audio (positive, negative, and shield) and two for DC Power (positive and
negative). These pins are clearly labeled on the MPS-488
E
rear panel. A single composite cable (such as Belden 1502)
wired for both DC power and balanced audio can be used to
connect to each MM-4XP.
MPS-488E Channel Outputs
Each MPS-488
E comes with eight EN3 5-pin male cable
connectors for assembling MM-4XP loudspeaker cables.
For information on MM-4XP cable requirements, see
“MM-4XP Current Draw and Cable Requirements” on
page 16. For information on cables and cable accessories
available from Meyer Sound, see Appendix B, “MM-4XP
Accessories.” For information on cable assembly, see
Appendix C, “MM-4XP Cable Assembly.”
MPS-488P Channel Outputs
Each MPS-488
P comes with eight Phoenix 5-pin female
cable connectors for assembling MM-4XP loudspeaker
cables. For information on MM-4XP cable requirements, see
“MM-4XP Current Draw and Cable Requirements” on
page 16. For information on cables and cable accessories
available from Meyer Sound, see Appendix B, “MM-4XP
Accessories.” For information on cable assembly, see
Appendix C, “MM-4XP Cable Assembly.”
MPS-488 CURRENT DRAW
The current that the MPS-488 and its connected loudspeakers draw from its AC source (wall outlet or power distribution
system) is dynamic and fluctuates as operating levels
change. Since 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.
■ 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, to
ensure that cable sizes and gauges conform to electrical
code standards. This current rating is also used as a rating for slow-reacting thermal breakers.
12
Page 13
MM-4XP OPERATING INSTRUCTIONS
Earth ground
Chassis ground
■ Burst Current — The maximum rms current during a
period of around one 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)
■ Ultimate Short-Term Peak Current — A rating for fast-
reacting magnetic connectors.
You can use the following table as a guide for selecting
cable gauges and circuit breaker ratings for the system’s
operating voltage.
Current Draw for MPS-488 with Eight MM-4XPs
Current Draw
(Eight MM-4XPs)
Idle Current 1.16 A rms 1.00 A rms 1.26 A rms
Maximum Long-Term
Continuous Current
Burst Current 3.6 A rms 2.2 A rms 4.3 A rms
Ultimate Short-Term
Peak Current
115
V AC
2.20 A rms 1.38 A rms 2.60 A rms
8.8 A peak 4.6 A peak 9.6 A peak
230
V AC
100
V AC
The minimum electrical service amperage required by an
MPS-488 is the sum of the Maximum Long-Term Continuous Current for all MM-4XPs connected to the MPS-488. An
additional 30 percent above the minimum amperage is recommended to prevent peak voltage drops at the service
entry.
NOTE: For best performance, the AC cable
voltage drop should not exceed 10 V, or
10 percent at 115 V and 5 percent at 230 V. Make
sure that even with AC voltage drops that the AC
voltage always remains within the operating window.
SAFETY ISSUES
Pay close attention to these important electrical and safety
issues.
■ The MPS-488 requires a grounded outlet.
■ Do not use a ground-lifting adapter or cut the AC cable
ground pin.
■ Keep all liquids away from the MPS-488 to avoid hazards
from electrical shock.
■ Do not operate the unit if the power cables are frayed or
broken.
13
Page 14
CHAPTER 2: THE MPS-488 POWER SUPPLY
14
Page 15
CHAPTER 3: THE MM-4XP LOUDSPEAKER
Red: DC power (+)
Black: DC power (–)
White: audio (+)
Blue: audio (–)
Audio shield
THE MM-4XP CONNECTOR
The MM-4XP receives DC power and balanced audio from a
EN3 5-pin male connector on its rear panel. The connector’s
five pins include two for DC power (negative and positive)
and three for balanced audio (shield, negative, and positive).
To function properly, the MM-4XP requires 48 V of DC
power.
MM-4XP Connector
A single composite cable (such as Belden 1502) wired for
both DC power and balanced audio can be used to connect
the MM-4XP to one of the MPS-488’s eight Channel Outputs.
Wiring the EN3-to-Pigtail Cables
Each MM-4XP loudspeaker comes with one EN3 5-pin
female to pigtail cable. The EN3 end of the cable connects
directly to the MM-4XP connector. The pigtail end of the
cable can be equipped with either an EN3 5-pin male connector for connecting to the MPS-488
Phoenix 5-pin female connector for connecting to the
MPS-488
E power supply. The pigtail can also be spliced to a
longer loudspeaker cable or to a junction box. The included
EN3-to-pigtail cable uses Belden 1502 cable, which can be
wired for both DC power and balanced audio. The EN3-topigtail cable is available in plenum or regular (non-plenum)
versions.
E power supply, or a
When assembling MM-4XP loudspeaker cables with the
included EN3-to-pigtail cables, make sure to use the wiring
scheme in Table 2. The red and black wires in Belden 1502
cable have a thicker gauge than the other three wires and
should be used for DC power. The blue, white, and shield
wires should be used for audio.
Belden 1502 Composite Cable
NOTE: For details on assembling MM-4XP
loudspeaker cables, see Appendix C,
“MM-4XP Cable Assembly.”
Table 2: MM-4XP Cable Wiring for Belden 1502
Wire Gauge Signal
Red 18 AWG DC power, positive (+)
Black 18 AWG DC power, n e g a t i v e ( – )
White 22 AWG Balanced audio, positive (+)
Blue 22 AWG Balanced audio, negative (–)
Shield 24 AWG Balanced audio, shield
When wiring MM-4XP cables, it is extremely important that
each pin in the cable be wired so that the pins in the
MM-4XP connector align with those in the MPS-488 Channel Output connector (see “Channel Outputs” on page 12).
Make sure the 48 V DC from the MPS-488 is wired directly
(and only) to the 48 V DC pins on the MM-4XP connector,
and that the polarity is observed (negative to negative, positive to positive) to avoid damage to the loudspeaker. In addition, make sure the audio pins are wired correctly; polarity
reversals for audio signals can affect system performance.
NOTE: For a complete list of cables and cable
connectors available from Meyer Sound that
can be used with the MM-4XP loudspeaker and
MPS-488 power supply, see Appendix B, “MM-4XP
Accessories.”
NOTE: For information on MM-4XP cable
requirements, see “MM-4XP Current Draw and
Cable Requirements” on page 16.
15
Page 16
CHAPTER 3: THE MM-4XP LOUDSPEAKER
!
!
MM-4XP Current Draw and Cable Requirements
Each MM-4XP loudspeaker draws a maximum current of
0.7 A rms and 2.2 A peak from the 48 V DC output of the
MPS-488. The current draw for the MM-4XP is dynamic and
fluctuates as operating levels change. The cabling between
the MM-4XP and the MPS-488 adds resistance and hence
causes a voltage drop at the loudspeaker. Because lower
voltages compromise peak SPL, and in some cases frequency response, cable resistance should be minimized.
NOTE: When connecting an MM-4XP to an
MPS-488 Channel Output, the total cable
resistance should not exceed 4 ohms.
Cable Lengths and Cable Gauges for MM-4XPs
When connecting an MM-4XP to an MPS-488 Channel Output, you can use cable lengths of up to 300 feet with only
1 dB of peak SPL loss using 18 AWG wire. Longer cable
lengths are possible with heavier wire gauges (see Table 3
and Table 4).
NOTE: For music playback at moderate levels
(when the MM-4XP is not driven to maximum
output), cable lengths of up to 500 feet with 18 AWG
wire are acceptable.
Table 3: MM-4XP Loudspeaker Cable Lengths (AWG)
Cable Gauge Resistance
(Ω/ft)
12 AWG 0.0016 1200 ft
14 AWG 0.00253 750 ft
16 AWG 0.00402 475 ft
18 AWG 0.00636 300 ft
20 AWG 0.01008 175 ft
Approximate
Max. Length
The maximum cable length for an MM-4XP can be calculated with the following formula:
maximum length = 4 ohms / 2 * cable resistance
For example, the maximum length of an 18 AWG cable with
a resistance of 0.00636 is 314.4 feet (4 / 2 * 0.00636).
NOTE: For long cable runs, you can use large
cable gauges for most of the run and then ter-
minate with the included EN3-to-pigtail cable.
THE MM-4XP LED
The MM-4XP has a three-color LED on its rear panel that
changes color to indicate the loudspeaker’s status.
Powering On (Green)
When powering up the MM-4XP loudspeaker, the following
startup events occur and are indicated by the LED:
1. The LED flashes green and then yellow during power up.
2. The LED turns solid green indicating the loudspeaker is
ready to reproduce audio.
CAUTION: If the MM-4XP LED turns red and
stays solid red after powering up and the audio
is muted, the loudspeaker has encountered a failure
and may need to be serviced. Contact Meyer Sound
Technical Support.
CAUTION: If the MM-4XP LED turns solid red
and the loudspeaker continues to output audio,
though at reduced levels, the loudspeaker’s voltage
may have dropped below 25 V DC. Operation of the
loudspeaker under these conditions is not recommended and the loudspeaker’s power supply and
cabling should be verified.
Table 4: MM-4XP Loudspeaker Cable Lengths (European)
Cable Gauge Resistance
(Ω/m)
2.50 mm
1.50 mm
1.00 mm
0.75 mm
16
2
2
2
2
0.0052 365 m
0.01076 175 m
0.02087 90 m
0.03307 55 m
Approximate
Max. Length
Limiting (Yellow)
Limiting activity is indicated when the MM-4XP LED turns
yellow. When engaged, the limiter protects the loudspeaker’s driver and prevents signal peaks from causing
excessive distortion in the loudspeaker’s amplifier, thereby
preserving headroom and maintaining smooth frequency
response at high levels. When the level returns to normal,
below the limiter’s threshold, the LED turns green and limiting ceases.
Page 17
MM-4XP OPERATING INSTRUCTIONS
!
!
Cable
coupler
The MM-4XP performs within its acoustical specifications at
normal temperatures when the MM-4XP LED is green, or if
the LED turns yellow for two seconds or less and then turns
green for at least one second. If the LED remains yellow for
longer than three seconds, that loudspeaker enters hard limiting where:
■ Increases to the input level have no effect.
■ Distortion increases due to clipping and nonlinear driver
operation.
■ The driver is subjected to excessive heat and excursion,
which will compromise its life span and may eventually
lead to damage over time.
CAUTION: The MM-4XP LED turns yellow
when the loudspeaker’s signal goes 2 dB
beyond the actual onset of limiting, and indicates a
safe, optimum level has been exceeded. If the
MM-4XP loudspeakers in a system begin to limit
before reaching the required SPL, consider adding
more loudspeakers to the system to achieve the
desired SPL without exposing the loudspeakers to
excessive levels and possible overheating.
CONNECTING MM-4XP LOUDSPEAKERS TO THE MPS-488
To connect MM-4XP loudspeakers to the MPS-488:
1. Power off the MPS-488.
2. Connect audio sources (from a mixer or processor) to the
MPS-488 Channel Inputs. Use balanced XLR cables.
3. Use the MPS-488 Link switches to route Channel Inputs
to the desired Channel Outputs.
4. Connect the MM-4XP loudspeakers to the MPS-488
Channel Outputs. Use a composite cable (such as
Belden 1502) wired for both DC power and balanced
audio and outfitted with the appropriate connector:
■ For an MPS-488P power supply, use an EN3 5-pin
female to Phoenix 5-pin female cable.
Loudspeaker Temperature and Limiting
The MM-4XP LED turns solid yellow when the temperature
of the MM-4XP heatsink reaches 65° C (145° F), indicating
the unit is reaching its maximum heat dissipation and a
reduction in SPL is recommended. While the MM-4XP will
continue to operate while the LED is yellow, the limiter
threshold is lowered to a safe level (causing the output level
to be lowered by 6 dB) to prevent the loudspeaker from
overheating. When the temperature of the MM-4XP heatsink
cools to 50°C (122°F), the LED changes from yellow to green
and the limiter threshold returns to normal.
Clipping (Red)
The MM-4XP LED flashes red when its input signal causes
the amplifier to overload. If the LED flashes red continuously,
the loudspeaker is severely overloaded and a reduction in
the input level is recommended.
CAUTION: If the MM-4XP LED turns solid red
and the loudspeaker continues to output audio,
though at reduced levels, the loudspeaker’s voltage
may have dropped below 25 V DC. Operation of the
loudspeaker under these conditions is not recommended and the loudspeaker’s power supply and
cabling should be verified.
■ For an MPS-488E power supply, use an EN3 5-pin
female to EN3 5-pin male cable.
■ To join two cables, one with an EN3 5-pin male cable
mount connector to one with an EN3 5-pin female cable
mount connector, use an EN3 5-pin female-to-male
cable coupler (PN 28.163.033.01).
17
Page 18
CHAPTER 3: THE MM-4XP LOUDSPEAKER
!
CAUTION: Make sure the MM-4XP loud-
speaker cables are wired correctly. For details
on assembling loudspeaker cables, see Appendix C,
“MM-4XP Cable Assembly.”
5. Power on the MPS-488 and monitor the LEDs on the
front panel to verify connections (for more information,
see “Voltage and Load Current LEDs (1–8)” on page 9).
6. Check the MM-4XP LEDs on the rear panel and verify
they are green (ready to reproduce audio).
7. Enable output from the audio sources (from the mixer or
processor) connected to the MPS-488.
18
Page 19
CHAPTER 4: MOUNTING THE MM-4XP
5.39
[136.91mm]
4.26
[108.20mm]
3.00
[76.20mm]
1.87
[47.39mm]
4.44
[112.78mm]
Ø0.75
[Ø19.05mm]
2.50
[63.50mm]
Ø0.27
[Ø6.76mm]
4.86
[123.39mm]
!
IMPORTANT SAFETY CONSIDERATIONS
When installing Meyer Sound loudspeakers, the following
precautions should always be observed:
■ All Meyer Sound products must be used in accordance
with local, state, federal, and industry regulations. It is
the owner’s and user’s responsibility to evaluate the reliability of any rigging method for their application. Rigging
should only be carried out by experienced professionals.
■ Use mounting and rigging hardware that has been rated
to meet or exceed the weight being hung.
■ Make sure to attach mounting hardware to the building's
structural components (studs or joists), and not just to
the wall surface. Verify that the building's structure and
the anchors used for the installation will safely support
the total weight of the mounted loudspeakers.
■ Use mounting hardware appropriate for the surface
where the loudspeaker will be installed.
■ Make sure bolts and eyebolts are tightened securely.
Meyer Sound recommends using Loctite
®
on eyebolt
threads and safety cables.
■ Inspect mounting and rigging hardware regularly. Imme-
diately replace any worn or damaged components.
MOUNTING THE MM-4XP WITH THE MUB-MM4XP U-BRACKET
The MUB-MM4XP U-bracket allows the MM-4XP to be
mounted on virtually any flat surface at adjustable angles.
To mount the MM-4XP with the MUB-MM4XP U-bracket:
1. Mount the MUB-MM4XP U-bracket to the mounting surface using screws in the two holes in the back of the
U-bracket. Use fastening hardware appropriate for the
mounting surface.
2. Insert the MM-4XP into the U-bracket, seating its sides
against the bracket’s attached neoprene strips. Align the
loudspeaker’s screw inserts near the top of the
U-bracket’s slots to allow for maximum tilting.
3. Secure the loudspeaker to the U-bracket using the two
3/8-16 screws and two shoulder washers included with
the MUB-MM4XP. The shoulder washers should be
placed between the screws and the outside of the
U-bracket, with the shoulder oriented toward the loudspeaker. Do not yet tighten the U-bracket screws.
CAUTION: Make sure to use the shoulder
washers. They insulate the MM-4XP from the
MUB-MM4XP U-Bracket Dimensions
U-bracket and mounting surface, eliminating grounding and differential problems.
4. Adjust the angle of the loudspeaker as desired.
5. Tighten the U-bracket screws to secure the MM-4XP.
19
Page 20
CHAPTER 4: MOUNTING THE MM-4XP
20
Page 21
APPENDIX A: SPECIFICATIONS
4.04
[102.50mm]
5.72
[145.38mm]
4.04
102.50mm]
3.99
[101.35mm]
7.98
[202.58mm]
2.25
[57.20mm]
4.04
[102.50mm]
2.75
[69.75mm]
MM-4XP SPECIFICATIONS
Operating Frequency Range 120 Hz – 18 kHz
Note: Recommended maximum operating frequency range. Response depends on loading conditions and
room acoustics.
Frequency Response 160 Hz – 16 kHz ±4 dB
Note: Measured free-field with pink noise at 1 meter, 1/3rd octave resolution.
Maximum Peak SPL 113 dB
Note: Measured free-field with music and referred to 1 meter.
Dynamic Range 100 dB
Note: Taken from peak SPL referred to A-wtd noise floor.
Phase Response 700 Hz – 17 kHz ±45°
Coverage 80° (3 kHz – 14 kHz ±10°); 120° (below 2 kHz)
Transducer One 4” cone driver
Voltage Requirement 48 V DC
Audio/Power Connector Single EN3 5-pin male (3 pins for balanced audio, 2 pins for DC power)
Input Impedance 10 kΩ electronically balanced
Nominal Input Sensitivity –2.5 dBV (0.75 V rms, 1.0 V peak) continuous average is typically the onset of limiting for noise and music
Input Level Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 V peak) into 600 Ω to produce maxi-
mum peak SPL over the operating bandwidth of the loudspeaker
Current Draw 0.7 A average; 2.2 A peak
LED To indicate loudspeaker status
MM-4XP Dimensions 4.04” W x 4.04” H x 5.72” D
(102.50 mm x 102.50 mm x 145.38 mm)
MM-4XP Weight 4.2 lbs (1.91 kg)
MM-4XP Dimensions
21
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APPENDIX A: SPECIFICATIONS
19.00
[482.60mm]
16.90
[429.26mm]
13.57
[344.78mm]
14.07
[357.40mm]
1.73
[43.94mm]
MPS-488 SPECIFICATIONS
Audio Inputs 8 channels of XLR female connectors with Link switches to route to outputs
Outputs 8 channels of Phoenix 5-pin male connectors or EN3 5-pin female connectors (3 pins for balanced audio,
2 pins for DC power)
Output Voltage 8 channels of 48 V DC (2.0 A, fuse protected)
Front Panel On-off switch
8 LEDs to indicate output voltage
8 LEDs to indicate current
AC Connector PowerCon
Voltage Selection Automatic
Safety Agency Rated
Operating Voltage
Turn On/Turn Off Points 90–264 V AC; 50/60 Hz
Current Draw Note: For 8 MM-4XP loudspeakers (1 per channel).
Idle Current 1.16 A rms (115 V AC); 1.00 A rms (230 V AC); 1.26 A rms (100 V AC)
Maximum Long-Term
Continuous Current
Burst Current 3.6 A rms (115 V AC); 2.2 A rms (230 V AC); 4.3 A rms (100 V AC)
Ultimate Short-Term
Peak Current
Inrush Current 30.8 A peak (115 V AC); 15.2 A peak (230 V AC); 33.0 A peak (100 V AC)
Dimensions 1RU high
Weight 15.5 lbs (6.6 kg)
100–240 V AC; 50/60 Hz
Note: No automatic turn-off voltages. Voltages above 265 V AC are fuse protected but may cause permanent damage to the power supply. Voltages below 90 V AC may result in intermittent operation.
2.20 A rms (115 V AC); 1.38 A rms (230 V AC); 2.60 A rms (100 V AC)
8.8 A peak (115 V AC); 4.6 A peak (230 V AC); 9.6 A peak (100 V AC)
19.00” W x 1.73” H x 13.57” D
(482.60 mm x 43.94 mm x 348.78 mm)
MPS-488 Dimensions
22
Page 23
APPENDIX B: MM-4XP ACCESSORIES
MM-4XP ACCESSORIES
The following MM-4XP accessories are available from Meyer Sound.
MM-4XP Accessories
Part Number Accessory Notes
09.183.001.01
09.183.001.02
09.183.001.03
09.183.001.04
420.027
40.163.003.02 MUB-MM4XP Mounting Bracket (black) Includes black mounting hardware
40.163.003.04 MUB-MM4XP Mounting Bracket (white) Includes clear mounting hardware
MPS-488P external power supply
(with US power cord)
MPS-488P external power supply
(with CE power cord)
MPS-488E external power supply
(with US power cord)
MPS-488E external power supply
(with CE power cord)
MPS-488 Fuse Replacement
Channel Outputs equipped with Phoenix
5-pin male connectors
Channel Outputs equipped with EN3 5-pin
female connectors
2-amp, 250-volt slow-blow fuse (T2A-250V)
MM-4XP CABLE CONNECTORS AND ADAPTERS
The following MM-4XP cable connectors and adapters are available from Meyer Sound.
MM-4XP Cable Connectors and Adapters
Part Number Connector/Adapter Use
484.065 Phoenix 5-pin female cable mount connector
468.069 EN3 5-pin female cable mount connector Connects to the MM-4XP loudspeaker con-
468.071 EN3 5-pin male cable mount connector Connects to the MPS-488
468.072 EN3 5-pin female inline cable adapter Connects to an EN3 5-pin male cable mount
468.073 EN3 5-pin male inline cable adapter Connects to an EN3 5-pin female cable
28.163.033.01 Cable coupler EN3 5-pin female-to-male Joins two cables: one with an EN3 5-pin male
Connects to the MPS-488
connector (a Phoenix 5-pin male connector).
nector (an EN3 5-pin male panel mount connector).
connector (an EN3 5-pin female panel mount
connector).
connector.
mount connector.
cable mount connector to one with an EN3
5-pin female cable mount connector.
P Channel Output
E Channel Output
23
Page 24
APPENDIX B: MM-4XP ACCESSORIES
MM-4XP CABLES
The following MM-4XP cables are available from Meyer Sound.
NOTE: All MM-4XP loudspeaker cables and bulk cable use Belden 1502R (regular) or Belden 1502P (plenum)
cable. Belden 1502 is a composite cable comprised of two 18 AWG wires for DC power, two 22 AWG wires for
balanced audio, and one 24 AWG wire for audio shield.
MM-4XP Loudspeaker Cables
Part Number Cable Color Coating Length
524.014 Bulk (no connectors) Black Regular 500 ft spool
524.015 Bulk (no connectors) White Plenum 500 ft spool
28.163.009.01 EN3 5-pin female to pigtail Black Regular 10 ft
28.163.009.11 EN3 5-pin female to pigtail White Plenum 10 ft
28.163.009.21 EN3 5-pin female to EN3 5-pin male Black Regular 10 ft
28.163.009.22 20 ft
28.163.009.23 30 ft
28.163.009.24 50 ft
28.163.009.25 100 ft
28.163.009.26 150 ft
28.163.009.31 EN3 5-pin female to EN3 5-pin male White Plenum 10 ft
28.163.009.32 20 ft
28.163.009.33 30 ft
28.163.009.34 50 ft
28.163.009.35 100 ft
28.163.009.36 150 ft
28.163.033.01 Cable coupler EN3 5-pin female-to-male (joins two cables: one with an EN3 5-pin male
cable mount connector to one with an EN3 5-pin female cable mount connector)
28.163.009.41 EN3 5-pin female to Phoenix 5-pin female Black Regular 10 ft
28.163.009.42 20 ft
28.163.009.43 30 ft
28.163.009.44 50 ft
28.163.009.45 100 ft
28.163.009.46 150 ft
28.163.009.51 EN3 5-pin female to Phoenix 5-pin female White Plenum 10 ft
28.163.009.52 20 ft
28.163.009.53 30 ft
28.163.009.54 50 ft
28.163.009.55 100 ft
28.163.033.01 150 ft
24
Page 25
APPENDIX C: MM-4XP CABLE ASSEMBLY
1”
0.275”
Pin #1 Black 48 V DC (–)
Pin #2 Red 48 V DC (+)
Pin #3 Unshielded Audio shield
Pin #4 Blue Audio (–)
Pin #5 White Audio (+)
Connector side upSide (cable attached)
Tighten screws
ASSEMBLING EN3-TO-PHOENIX LOUDSPEAKER CABLES
To connect the MM-4XP loudspeaker directly to the MPS-488P power supply, you need an EN3 5-pin female to Phoenix
5-pin female cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable (included with the MM-4XP), you can disregard steps 4–7 in the procedure
Assembled EN3-to-Phoenix Cable
To assemble an EN3-to-Phoenix cable:
1. If cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.
2. Insert the five exposed conductors into the five cable holes in the Phoenix connector using the following wiring scheme.
Phoenix 5-Pin Female Cable Mount Connector
3. Secure the conductors by tightening the five screws in the Phoenix conductor.
25
Page 26
APPENDIX C: MM-4XP CABLE ASSEMBLY
Cable clamp
housing
Boot Coupling ring
Cord connector
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
Pin #2, Red,
48 V DC (+)
Pin #1, Black,
48 V DC (–)
Pin #3, Unshielded,
audio shield
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
REAR
FRONT
Dimple identifies Pin #1
4. Disassemble the EN3 5-pin female connector and feed one end of the cable through the boot, cable clamp housing, and
coupling ring.
Disassembled EN3 5-Pin Female Cable Mount Connector
5. If the EN3 end of the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and
white wires .275”.
6. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.
Pin Destinations for EN3 5-Pin Female Cable Mount Connector
7. Reassemble the EN3 5-pin female connector:
■ Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord
connector.
■ Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable
clamps in the cable clamp housing into their compartments.
■ Slide the boot forward so it covers the cable clamp housing completely.
26
Page 27
MM-4XP OPERATING INSTRUCTIONS
Cable clamp
housing
Boot Coupling ring
Cord connector
1”
0.275”
ASSEMBLING EN3-TO-EN3 LOUDSPEAKER CABLES
To connect the MM-4XP loudspeaker directly to the MPS-488E power supply, you need an EN3 5-pin female to EN3 5-pin
male cable. The following procedure documents how to assemble this cable. If you are starting with an EN3-to-pigtail cable
(included with the MM-4XP), you can disregard step 5 in the procedure.
NOTE: Cable mount connectors cannot connect to other cable mount connectors. Cable mount connectors
can only connect to panel mount connectors (like those on the MM-4XP and MPS-488
To extend cables with EN3 connectors on both ends you can use an EN3 5-pin female-to-male cable coupler.
Assembled EN3-to-EN3 Cable
To assemble an EN3-to-EN3 loudspeaker cable:
E) or inline connectors.
1. Disassemble the EN3 5-pin male connector and feed one end of the cable through the boot, cable clamp housing, and
coupling ring.
Disassembled EN3 5-Pin Male Cable Mount Connector
2. If the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.
27
Page 28
APPENDIX C: MM-4XP CABLE ASSEMBLY
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
Pin #2, Red,
48 V DC (+)
Pin #1, Black,
48 V DC (–)
Pin #3, Unshielded,
audio shield
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
REAR
FRONT
Dimple identifies Pin #1
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
Pin #2, Red,
48 V DC (+)
Pin #1, Black,
48 V DC (–)
Pin #3, Unshielded,
audio shield
Pin #5, White,
audio (+)
Pin #4, Blue,
audio (–)
REAR
FRONT
Dimple identifies Pin #1
3. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.
Pin Destinations for EN3 5-Pin Male Cable Mount Connector
4. Reassemble the EN3 5-pin male connector:
■ Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord
connector.
■ Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable
clamps in the cable clamp housing into their compartments.
■ Slide the boot forward so it covers the cable clamp housing completely.
5. Repeat the previous steps to attach the EN3 5-pin female connector to the other end of the cable.
Pin Destinations for EN3 5-Pin Female Cable Mount Connector
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Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
© 2007
Meyer Sound Laboratories Inc.
05.163.005.01 A
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