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OPERATING INSTRUCTIONS CONCERT SERIES
700-HP UltraHigh-Power Subwoofer
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
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: 700-HP
Product Options: All
Conforms to the following Product Specifications
Safety: IEC 60065: 2002
BS EN 60065: 2002
CSA C22.2 60065: 2003
UL 813: 1999
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
December 6, 2004
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)
© 2004
Meyer Sound. All rights reserved.
700-HP UltraHigh-Power Subwoofer 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.
Intelligent AC, RMS and all alpha-numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound. Meyer
Sound, Meyer Sound MAPP Online, TruPower, SIM and QuickFly 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: 05.137.094.01 A
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SYMBOLS USED
These symbols indicate important safety or operating features in this booklet and on the chassis:
Dangerous voltages: risk of
electric shock
Pour indiquer les risques
résultant de tensions
dangereuses
Zu die gefahren von
gefährliche spanning zeigen
Para indicar voltajes
peligrosos.
Important operating
instructions
Pour indequer important
instructions
Zu wichtige betriebs-
anweisung und unter-
haltsanweisung zeigen
Instrucciones importantes
de funcionamiento 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.
Frame or chassis Protective earth ground
Masse, châssis Terre de protection
Rahmen oder chassis Die schutzerde
Armadura o chassis Tierra proteccionista
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.
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 groundingtype 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 loudspeaker. The AC mains plug or appliance coupler shall
remain readily accessible for operation.
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.
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SAFETY SUMMARY
English
- To reduce the risk of electric
shock, disconnect 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 userserviceable 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 celui-ci.
- 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-Schnittstellensign
alkabel angeschlossen wird. Das
Netzkabel erst nach Herstellung
aller Signalverbindungen wieder
einstecken.
- Der Lautsprecher an eine
geerdete zweipolige DreiphasenNetzsteckdose 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
eléctrica, 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
tomacorriente 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
sobrecalentamiento, 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.
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CONTENTS
INTRODUCTION 1
How To Use this Manual 1
CHAPTER 1: Introducing the 700-HP Subwoofer 3
Features & Benefits 3
Applications 3
CHAPTER 2: Power Requirements 5
AC Power 5
Voltage Requirements 5
AC Power Distribution 5
Current Requirements 6
Power Connector Wiring Conventions 7
Electrical Safety Issues 8
CHAPTER 3: Amplification and Audio 9
Audio Input 9
700-HP Interconnections 10
Cabling 10
700-HP Limiting 10
700-HP Amplifier Cooling System 11
CHAPTER 4: RMS™ Remote Monitoring System (Optional) 13
Understanding the RMS Communication Module’s User Panel 13
Service LED (Red) 13
Service Button 14
Wink LED (green) 14
Reset Button 14
Activity LED (Green) 14
User Interface 14
CHAPTER 5: System Integration 15
Using 700-HP Subwoofers with Other Meyer Sound Loudspeakers 15
700-HP Used with Concert and UltraSeries 15
Daisy-Chained 15
Adding an LD-1A/LD-2 Line Driver 16
Using the LD-1A/LD-2’s Lo-Cut Filter 16
Using the 700-HP with M Series Loudspeakers 16
Adding an LD-3 Line Driver 16
700-HP Used in Combination with the 650-P Subwoofer 17
Digital Signal Processors 17
CHAPTER 6: System Design and Integration Tools 19
Meyer Sound MAPP Online® 19
SIM® Measurement System 20
Source Independent Measurement Technique 20
Applications 20
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CHAPTER 7: QuickFly® Rigging 21
MRK-700 Rigging Kit 21
MTG-700 Multipurpose Grid 22
MCF-700 Caster Frame 23
APPENDIX A: Amplifier Replacement and Optional Rain Hood 25
Using the Rain Hood (Weather-Protected Loudspeakers) 25
Removing the 700-HP Amplifier 25
Replacing the 700-HP Amplifier 25
Removing the 700-HP Amplifier (with Rain Hood) 26
Replacing the 700-HP Amplifier and Rain Hood 26
APPENDIX B: Specifications 27
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INTRODUCTION TO THIS MANUAL
INTRODUCTION
These operating instructions provide important information
about the form, features, function and specifications of the
700-HP ultrahigh-power subwoofer. In addition to power
requirements and audio characteristics, fundamental system design, useful software tools and rigging options for the
700-HP are discussed.
Chapter 1: Introduction provides a general description of
the 700-HP and its capabilities and functionality.
Chapter 2: Power Requirements discusses power distribution, voltage and current requirements, as well as electrical safety issues.
Chapter 3: Amplification and Audio will help you understand and harness the power of the 700-HP amplifier and
audio systems. Amplifier specifications, connectivity, limiting and cooling system components are all covered.
Chapter 4: RMS introduces you to the optional communication RMS module, which can be installed in the 700-HP’s
amplifier to make use of Meyer Sound’s RMS™ remote
monitoring system.
Chapter 5: System Integration will walk you through the
integration of the 700-HP in mid-high or full-range systems.
Chapter 6: System Design and Integration Tools covers
two comprehensive tools, Meyer Sound MAPP Online® and
SIM®, for assisting you with the acoustical and functional
requirements of system design and optimization.
Chapter 7: QuickFly® Rigging discusses the rigging options available for ground stacking and flying the 700-HP
subwoofer.
HOW TO USE THIS MANUAL
As you read this manual, you’ll find figures and diagrams
to help you understand and visualize what you’re reading.
You’ll also find numerous icons that serve as cues to flag
important information or warn you against improper or potentially harmful activities. These icons include:
A NOTE identifies an important or useful
piece of information relating to the topic
under discussion.
A TIP offers a helpful tip relevant to the topic
at hand.
A CAUTION gives notice that an action can
have serious consequences and could cause
harm to equipment or personnel, delays, or other
problems.
Information and specifications are applicable as of the date
of this printing. Updates and supplementary information are
posted on the Meyer Sound Web site at:
http://www.meyersound.com
You may contact Meyer Sound Technical Support at:
Appendix A: Amplifier Replacement and Optional Rain
Hood discusses the procedure for replacing the 700-HP
amplifier and rain hood.
Appendix B: Specifications includes a full list of specifications for the 700-HP, along with dimensional drawings both
with and without the optional rigging hardware.
Tel: +1 510 486.1166
Fax: +1 510 486.8356
Email: techsupport@meyersound.com
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INTRODUCTION
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CHAPTER 1
CHAPTER 1: INTRODUCING THE 700-HP ULTRAHIGH-POWER SUBWOOFER
The Meyer Sound 700-HP ultrahigh-power subwoofer (Figure 1.1) sets a new standard for the power-to-size equation.
The 700-HP’s power and bandwidth handle high continuous operating levels and extreme transient information with
minimal distortion in its operating frequency range.
Figure 1.1. 700-HP ultrahigh-power subwoofer, shown here without
optional rigging frame
Meyer Sound’s rigorous design approach has been applied to extract the greatest efficiency from every part of the
system, resulting in the 700-HP’s effortless reproduction of
low-frequency transient information. As a self-powered system, the transducers, amplification and control electronics
of the 700-HP are created as a symbiotic system that optimizes performance and maximizes its tremendous power.
The operating frequency range of 28 Hz to 150 Hz complements other Meyer Sound loudspeakers and line and curvilinear arrays in sound reinforcement applications requiring maximum headroom at the low end of the frequency
spectrum.
The 700-HP’s efficiently tuned cabinet houses two Meyer
Sound-designed and -manufactured back-vented, long-excursion, 18-inch cone drivers. Each driver features a 4-inch
voice coil and is rated to handle 1200 AES watts. The drivers have also been engineered for extreme efficiency, using
high-gauss neodymium magnets for the most powerful
magnetic field strength. High magnetic field strength increases the driver’s sensitivity, which yields greater output,
while keeping heat dissipation requirements within operational tolerances.
An integral two-channel class AB/H amplifier with complementary MOSFET output stages supplies total peak power
of 2250 watts (1125 watts per channel). With twice the
amplifier power of the 650-P subwoofer, the 700-HP produces an average of 3 dB more overall SPL, with enormous
headroom to accommodate the most extreme demands
with ease. Recent tests conducted by Meyer Sound show
the 700-HP producing significantly higher output than other
“high-power” subwoofers.
The amplifier, control electronics and power supply are
integrated into a single, field-replaceable module mounted
in the rear of the cabinet. The cabinet is constructed of
multi-ply hardwood and coated with a textured black finish.
Integral metal grilles lined with acoustical black mesh protect the cone drivers. Designed mainly for stage or ground
placement, the stackable 700-HP includes plastic skids on
the bottom of the unit, preventing damage to the enclosure
or the unit below. The skids align with slots on the cabinet’s
upper surfaces ensuring secure, aligned stacking. For maximum convenience in touring situations, the 700-HP can
even travel in stacks on the MCF-700 caster frame.
Applications
Features & Benefits
■ Stackable
■ Flyable using optional rigging kit
■ Extremely low distortion for ultimate low-frequency clar-
ity
■ Very high peak power yields excellent transient reproduction
■ Transportable in blocks using optional heavy duty
caster frame
■ Exceptionally reliable and durable
■ Stadiums, arenas and concert halls
■ Medium-to-large theatres and clubs
■ Theme parks
■ Cinema
The 700-HP is truck-smart, with exterior cabinet dimensions
suitable for both European and US truck widths. An optional
QuickFly rigging kit is available, installed at the factory or as
a field upgrade. Up to 11 cabinets can be suspended from
the optional MTG-700 top grid in a straight hang at a 7:1
safety factor.
Options available for the 700-HP include weather protection and finishes in custom colors for fixed installations and
other situations requiring specific cosmetics.
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CHAPTER 1
An optional RMS remote monitoring system module allows
comprehensive monitoring of all key system parameters on
any RMS-equipped host PC. In addition, Meyer Sound’s
MAPP Online multipurpose acoustical prediction program
allows quick prediction of coverage, frequency response,
impulse response and maximum output of the 700-HP and
other Meyer Sound loudspeakers and loudspeaker systems.
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Line 1
Line 2 Line 3
Neutra l
Earth Ground
CHAPTER 2: POWER REQUIREMENTS
CHAPTER 2
Self-powered and highly mobile, the 700-HP subwoofer is
advanced loudspeaker technology with equally advanced
power capabilities. Understanding the 700-HP subwoofer’s power distribution, voltage and current requirements,
as well as electrical safety issues, is critical to the safe
and correct operation and deployment of the 700-HP
subwoofer.
AC POWER
When AC power is applied to the 700-HP subwoofer, the
Intelligent AC power supply automatically selects the correct operating voltage, allowing the 700-HP subwoofer to
be used internationally without manually setting voltage
switches. The Intelligent AC power supply performs the
following protective functions to compensate for hostile
conditions on the AC mains:
■ Suppresses high-voltage transients up to several kilovolts
■ Filters common mode and differential mode radio
frequencies (EMI)
■ Sustains operation temporarily during low-voltage
periods
■ Provides soft-start power-up, eliminating high inrush
current
to operating the 700-HP subwoofer from 120 V AC
(Line- Neutral). Make sure that the voltage remains
within the 700-HP subwoofer’s recommend operating window (180 V AC to 250 V AC). The Ground
terminal must always be used for safety and the
Line to Ground voltage should never exceed 250
V AC (typically there will be 120 V AC from Line to
Ground in the above example).
The 700-HP subwoofer uses a NEMA L6-20P, an IEC 309
male power connector or a multipin VEAM connector and
complies with worldwide product safety standards.
AC POWER DISTRIBUTION
All amplifier modules and directly associated audio equipment (mixing consoles, processors, etc.) must be properly
connected to the AC power distribution, preserving AC
line polarity and connecting earth ground such that all
grounding points are connected to a single node or common point using the same cable gauge as the neutral and
line(s) cable(s).
Improper grounding connections between loudspeakers
and the rest of the audio system may produce noise, hum
and/or serious damage to the input/output stages in the
system’s electronic equipment.
VOLTAGE REQUIREMENTS
The 700-HP subwoofer operates safely and without audio
discontinuity if the AC voltage stays within either of two
operating windows at 50 or 60 Hz:
■ 85 to 134 volts
■ 165 to 264 volts
The 700-HP subwoofer can withstand continuous voltages
up to 275 volts and allows any combination of voltage to
GND (that is neutral-line-ground or line-line-ground).
CAUTION: Continuous voltages higher than
275 volts can damage the unit.
TIP: Since the 700-HP subwoofer does
not require a dedicated Neutral, and it can
tolerate elevated voltages from ground, it can be
connected between Line-Line terminals in a 120
V 3-phase Wye system. This results in 208 V AC
betweens lines (nominal) and will therefore draw
less current for the same output power compared
CAUTION: Before applying AC to any
Meyer Sound self-powered loudspeaker, be
sure that the voltage potential difference between
neutral and earth ground is less than 5 V AC.
Figure 2.1 shows a sample three-phase AC distribution
system, with the load between loudspeakers distributed
among the three phases and all of the loudspeakers connected to common neutral and earth ground points.
Figure 2.1. A sample AC power distribution block diagram.
5
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CHAPTER 2
NOTE: Refer to Appendix B for details on
the 700-HP subwoofer’s AC voltage require-
ments.
After applying AC power, the proper operating voltage is
automatically selected, but the system is muted. During the
next three seconds the following events occur:
1. The primary fans turn on.
2. The main power supply slowly ramps on.
3. The green Active LED on the user panel lights up,
indicating that the system is enabled and ready to pass
audio signals.
CAUTION: If the Active LED does not il-
luminate or the system does not respond to
audio input after ten seconds, remove AC power immediately. Verify that the voltage is within the proper
range. If the problem persists, please contact Meyer
Sound or an authorized service center.
If voltage drops below the lower boundary of either safe
operating range (brownout), the 700-HP subwoofer uses
stored energy to continue functioning briefly, and shuts
down only if voltage does not rise above the lower boundary before the 700-HP subwoofer’s storage circuits are
depleted. How long the 700-HP subwoofer will continue to
function during brownout depends on the amount of voltage drop and the audio source level during the drop.
If the voltage increases above the upper boundary of either
range, the power supply rapidly turns off, preventing damage to the unit.
NOTE: It is recommended that the supply
be operated in the rated voltage windows at
least a few volts away from the turn on/off points.
This ensures that AC voltage variations from the service entry – or peak voltage drops due to cable runs
– do not cause the amplifier to cycle on and off.
CURRENT REQUIREMENTS
The 700-HP subwoofer presents a dynamic load to the AC
mains, which causes the amount of current to fluctuate
between quiet and loud operating levels. Since different
cables and circuit breakers heat up at varying rates, it is essential to understand the types of current ratings and how
they correspond to circuit breaker and cable specifications.
The maximum long-term continuous current is the maximum rms current during a period of at least ten seconds.
It is used to calculate the temperature increase in cables,
in order to select a cable size and gauge that conforms to
electrical code standards. It is also used to select the rating
for slow-reacting thermal breakers.
The burst current is the maximum rms current during a
period of approximately one second, used to select the
rating of most magnetic breakers and to calculate the peak
voltage drop in long AC cables according to the formula:
V pk (drop) = I pk x R (cable total)
The ultimate short-term peak current is used to select the
rating of fast-reacting magnetic breakers.
Use Table 2.1 below as a guide when selecting cable gauge
size and circuit breaker ratings for your operating voltage.
NOTE: If voltage fluctuates within either
operating range, automatic tap selection
stabilizes the internal operating voltage. This tap
selection is instantaneous, and there are no audible
artifacts.
If the 700-HP subwoofer shuts down due to either low or
high voltage, its power supply automatically turns on again
after three seconds if the voltage has returned to either normal operating window. If the 700-HP subwoofer does not
turn back on after ten seconds, remove AC power immediately (see previous Caution).
6
Table 2.1. Current Ratings for the 700-HP Subwoofer
Current Draw 115 V AC 230 V AC 100 V AC
Idle current 0.640 A rms 0.320 A rms 0.850 A rms
Max. long-term
continuous
Burst current 19 A rms 9.5 A rms 22 A rms
Ultimate shortterm peak
10 percent at 115 volts and 5 percent at 230 volts.
Make sure that even with the AC voltage drop the
AC voltage always stays in the operating windows.
8.8 A rms 4 A rms 10 A rms
39 A pk 20 A pk 45 A pk
NOTE: For best performance, the AC cable
voltage drop should not exceed 10 volts, or
Page 13
NOTE: The minimum electrical service am-
perage required by the 700-HP subwoofer
system is the sum of each loudspeaker’s maximum
long-term continuous current. An additional 30 percent above the minimum amperage is recommended
to prevent peak voltage drops at the service entry.
CAUTION: In the unlikely event that the cir-
cuit breakers on the user panel trip (the white
center buttons pop out), disconnect the AC power
cable. Do not reset the breakers with the AC connected. Contact Meyer Sound for repair information.
CHAPTER 2
neutral (blue)
line (brown)
ground (green/yellow)
Figure 2.3. IEC 309 power connector pin-out
line (brown)
POWER CONNECTOR WIRING CONVENTIONS
The 700-HP subwoofer requires a grounded outlet. It is very
important that the system be properly grounded in order
to operate safely and properly. Figures 2.2, 2.3, and 2.4
illustrate correct wiring for the creation of power cables and
distribution systems.
Figure 2.2. The 700-HP subwoofer user rear panel with L6-20 power
connector
ground (green/yellow)
neutral (blue)
Figure 2.4. VEAM multipin connector power pin-out
If your 700-HP subwoofer is fitted with the VEAM multipin
connector, see the Meyer Sound document VEAM Cable
Wiring Reference (part number 06.033.113) for the wiring
conventions and pin-outs for AC, audio, and RMS connections.
Meyer Sound offers the VIM-3 (VEAM interface module) to
distribute power, audio, and RMS to 700-HP subwoofers
fitted with VEAM connectors, as shown in Figure 2.5.
Figure 2.5. VIM-3 module, front (top) and rear (bottom)
7
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CHAPTER 2
ELECTRICAL SAFETY ISSUES
Pay close attention to these important electrical and safety
issues.
CAUTION: Do not use a power cord adapter
to drive the 700-HP subwoofer from a standard three-prong Edison outlet since that connector
is rated for only 15 amps (NEMA 5-15R; 125 V AC
max.).
CAUTION: The 700-HP subwoofer requires a
ground connection. Always use a grounded
outlet and plug.
TIP: Use the ring located in the rear to
the side of the amplifier on the 700-HP
subwoofer to provide strain relief for power and
signal cables. Do not use this ring for any other
purpose.
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CHAPTER 3: AMPLIFICATION AND AUDIO
The 700-HP uses sophisticated amplification and protection circuitry to produce consistent and predictable results
in any system design. This chapter will help you understand and harness the power of the 700-HP amplifier and
audio systems.
The rear panel of the 700-HP (Figure 3.1) provides AC
connection, audio input and loop out.
CHAPTER 3
CAUTION: Shorting an input connector pin
to the case can form a ground loop and
cause hum.
Use standard audio cables with XLR connectors for balanced signal sources. Make sure that pin 1 (shield) is
always connected on both ends of the cable. Telescoping
grounding schemes are not recommended.
CAUTION: Ensure that all cabling carrying
signal to 700-HPs in a system is wired correctly: Pin 1 to Pin 1, Pin 2 to Pin 2, and so forth, to
prevent the polarity from being reversed. Any number of loudspeakers – even one in the subwoofer
system - with reversed polarity will result in severe
performance degradation.
Audio signals can be daisy-chained using the loop output
connector on the User Panel (Figure 3.2). A single source
can drive multiple 700-HPs with a paralleled input loop,
creating an unbuffered hard-wired loop connection.
Figure 3.1. The rear panel of the 700-HP
AUDIO INPUT
The 700-HP presents a 10 kOhm balanced input impedance to a three-pin XLR connector with the following
connectors:
■ Pin 1 — 220 kOhm to chassis and earth ground (ESD
clamped)
■ Pin 2 — Signal ( + )
■ Pin 3 — Signal ( - )
■ Case — Earth (AC) ground and chassis
Pins 2 and 3 carry the input as a differential signal; pin 2 is
hot relative to pin 3, resulting in a positive pressure wave
when a positive signal is applied to pin 2. Pin 1 is connected to earth through 220 kOhm, 1000 pF, 15 V clamp
network. This ingenious circuit provides virtual ground lift
for audio frequencies, while allowing unwanted signals to
bleed to ground.
Figure 3.2. 700-HP rear panel audio input connectors
When driving multiple 700-HPs in a system, make certain
that the source device can drive the total load impedance
presented by the paralleled input circuit of the system. The
audio source must be capable of producing a minimum
of 20 dB volts (10 volts rms into 600 ohms) in order to
produce the maximum peak SPL over the operating bandwidth of the subwoofer.
To avoid distortion from the source, make sure the source
equipment provides an adequate drive circuit design for
the total paralleled load impedance presented by the
system. The input impedance for a single subwoofer is
10 kOhms: if n represents the number of 700-HPs in a
system, paralleling the inputs of n subwoofers will produce
a balanced input load of 10 kOhms divided by n.
NOTE: Most source equipment is safe for
driving loads no smaller than 10 times the
source’s output impedance.
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CHAPTER 3
For example, cascading 10 700-HPs produces an input
impedance of 1000 ohms (10 kOhms divided by 10). The
source equipment should have an output impedance of
100 ohms or less. This is also true when connecting 700HPs in parallel (loop out) with other self-powered Meyer
Sound loudspeakers, for example, MILO, M3D, M2D or
MSL-4.
TIP: If abnormal noises such as hiss and
popping are produced by the subwoofer,
disconnect the audio cable from the subwoofer. If
the noise stops, then most likely the problem is not
with the subwoofer. Check the audio cable, source,
and AC power for the source of the problem.
Meyer Sound LD-1A, LD-2 and LD-3 line drivers are
highly recommended when driving systems using multiple
loudspeakers. These line drivers, in addition to maintaining signal integrity for long cable paths, offer independent
outputs and filters to help you integrate 700-HP subwoofers into your system.
NOTE: For details on the 700-HP’s audio
input characteristics and amplification, see
Appendix B: Specifications.
CABLING
The 700-HP is available with two different cabling/connection options. One is the Meyer Sound/VEAM cable
system, which combines AC power, audio signal, and
RMS network data into one heavy-duty cable with a single
matching connector per 700-HP cabinet.
The other (standard) system uses three separate cables
and connectors per cabinet for the AC line current, signal,
and RMS data. However, the three can be consolidated to
create a “multi-cable” by looming them together for quick
connection to each cabinet. This ensures no patching errors and a minimum of discrete cables behind if the
700-HP cabinets are flown in an array.
A ring/stud fitting is provided on the rear of the 700-HP
loudspeaker to act as a strain relief for cabling. Using this
fitting will minimize the chance of cables being damaged
during installation. To utilize the strain relief fitting, insert
the signal, data, and AC connections into each loudspeaker as the array is being rigged (swag all cables under the
rain hood’s side flaps if installed), and tie the cables off to
the ring/stud fitting (Figure 3.3).
700-HP INTERCONNECTIONS
The 700-HP utilizes two 4-ohm, 18-inch cone drivers.
These drivers feature lightweight neodymium magnet
structures and are rated to handle 1200 AES watts. Each
channel of the amplifier drives one low-frequency driver.
CAUTION: All Meyer Sound loudspeakers
are shipped with the drivers in correct alignment. However, if a driver needs to be replaced,
make sure the replacement is reinstalled with the
correct polarity. Incorrect driver polarity impairs the
system performance and may damage the drivers.
The 700-HP is powered by the Meyer Sound HP-2/700
amplifier, a high-power two-channel amplifier. The amplifier utilizes complementary MOSFET output stages (class
AB/H) capable of delivering 2250 watts total (1125 watts
per channel). All the specific functions for the 700-HP
such as crossover points, frequency and phase response,
and driver protection are determined by the control card
installed inside the amplifier.
Figure 3.3. Tie cables off using the ring/stud fitting.
700-HP LIMITING
The 700-HP uses Meyer Sound’s advanced TruPower®
limiting. Conventional limiters assume a constant loudspeaker impedance and therefore set the limiting threshold by measuring voltage only. However, this method is
inaccurate, because the speaker’s impedance changes in
response to the frequency content of the source material and thermal variations in the speaker’s voice coil and
magnet. Consequently, conventional limiters begin limiting
prematurely, which under-utilizes system headroom and
lessens the speaker’s dynamic range.
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CHAPTER 3
In contrast, TruPower accounts for varying loudspeaker
impedance by measuring current, in addition to voltage,
to compute the actual power dissipation in the voice coil.
TruPower improves performance before and during limiting
by allowing each driver to produce maximum SPL across its
entire frequency range.
NOTE: TruPower limiting only reduces the
signal level to keep the voice coil below 180°
Celsius, hence peaks are unaffected.
In addition, TruPower limiting eliminates power compression
when the system is operated at high levels for extended
periods, and also extends the driver life cycle by controlling
voice coil temperatures.
The 700-HP’s left and right 18-inch cone drivers are powered by separate amplifier channels, each with a power
detector but routed to one limiter; the limiter tracks both
channels and uses the higher of the two values to engage.
When the safe continuous power level is exceeded in any
channel, the TruPower limiter controlling both amplifier
channels engages. TruPower limiting activity is indicated by
the LED on the amplifier’s user panel.
The 700-HP performs within its acoustical specifications
and operates at a normal temperature if the limit LED is lit
for no longer than two seconds, and then goes off for at
least one second. If the limit LED remains on for longer than
three seconds, the 700-HP enters hard limiting with the
following negative consequences:
■ Increasing the input level will not increase the volume.
■ The system distorts due to clipping and nonlinear driver
operation.
■ The lifespan of the drivers is reduced because they are
subjected to excessive heat.
CAUTION: While the limiters protect the
system under overload conditions and exhibit
smooth sonic characteristics, we recommend that
you do not drive the 700-HP into continuous limiting. If an entire system of 700-HPs begins to limit
before reaching the required sound pressure level
(SPL), you should consider adding more 700-HP
subwoofers to the system.
In addition to TPL limiting the 700-HP also includes a peak
limiter. When engaged, the peak limiter prevents signal
peaks from causing excessive distortion in the amplifier
channel, preserving headroom and maintaining smooth
frequency response at high levels.
The TPL LED is used to indicate any limiting activity. When
the LED turns on and off in rapid succession, it indicates
peak limiting; when it turns on and off slowly, it indicates
TPL activity that indicates when the safe power level is
exceeded (Figure 3.4).
Limiters cease operation when the power level and voltage for the channel returns to normal – below the limiter’s
threshold. The limiting circuitry utilizes optical limiters that
add no noise and have no effect on the signal when the
limiter is not engaged and the LED is inactive.
700-HP AMPLIFIER COOLING SYSTEM
The 700-HP uses a forced-air cooling system with two
fans (one primary and one reserve) to prevent the amplifier module from overheating. The primary fan draws air in
through ducts on the front of the cabinet, over the heatsink,
and out the rear of the cabinet. Because dust does not accumulate in the amplifier circuitry, its lifespan is increased
significantly. The front grille surface acts as an air filter for
the cooling system and should always be in place during
operation (Figure 3.5).
Figure 3.4. The 700-HP subwoofer’s limit LED indicators
Figure 3.5. Airflow through the 700-HP
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CHAPTER 3
CAUTION: When operating a weather-pro-
tected 700-HP with the collapsible rain hood
installed, always be sure the rain hood is fully open.
Leaving the hood closed or partially open will limit
the airflow through the amplifier, which could cause
it to overheat and shut down.
The variable-speed primary fan runs continuously with an
inaudible operating noise at its slowest speed. The primary
fan begins increasing speed when the heatsink reaches 42˚
C. The fan reaches full speed at 62˚ C and is barely audible
near the cabinet, even without an audio signal. In the event
that the heatsink temperature reaches 74˚ C, the secondary
fan turns on and is clearly audible without an audio signal.
The secondary fan turns on in response to:
■ Primary fan failure (check status immediately)
■ High source levels for a prolonged period
■ Accumulation of dust along the cooling path
The secondary fan turns off when the temperature decreases to 68˚ C.
NOTE: In the highly unlikely event that the
secondary fan does not keep the temperature below 85˚ C, the 700-HP automatically shuts
down until AC power is removed and reapplied. If
the 700-HP shuts down again after cooling and reapplying AC power, contact Meyer Sound for repair
information.
Despite the 700-HP’s filtering, extensive use or a dusty operating environment can allow dust to accumulate along the
path of the airflow, preventing normal cooling. To prevent
this, you should periodically remove the grille frame, air-intake foam and amplifier module and use compressed air to
clear dust from the grille, foam, fans, and heatsinks. Make
sure that the air ducts are clear.
CAUTION: Be sure to unplug power to the
unit before cleaning the amplifier.
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CHAPTER 4: RMS REMOTE MONITORING SYSTEM (OPTIONAL)
CHAPTER 4
An optional communication module can be installed in the
700-HP’s amplifier to make use of Meyer Sound’s RMS
remote monitoring system. RMS is a real-time networked
monitoring system that connects Meyer Sound self-powered loudspeakers with a Windows-based PC at the sound
mix position or other desired location. Optional RMS
software delivers extensive status and system performance
data directly to you from every installed loudspeaker.
RMS allows you to monitor amplifier voltages, limiting
activity, power output, temperature, fan and driver status,
warning alerts, and other key data for up to 62 loudspeakers without a network repeater; data is updated two to five
times per second.
NOTE: Optional Loudspeaker Mute and
Solo functions, helpful for acoustic setup or
troubleshooting, are also available. A jumper must
be installed in the RMS communication module in
order to enable Mute and/or Solo functionality; the
software also needs to be enabled for these functions.
If your 700-HP is shipped fitted with an RMS communication module, Loudspeaker Mute and Solo functions are
disabled by default. Once enabled, the jumper(s) can still
be removed to eliminate any chance of an operator error (a
muting error, for example) during a performance, and both
functions can be controlled by software commands in any
case. Also note that RMS does not control loudspeaker
volume or AC power.
Loudspeakers are identified on the network by Node Names
assigned during a one-time “commission” (Figure 4.1) into
the RMS database that resides on your computer (as a part
of the software).
This information is permanently retained on each RMS
communication module and in the computer RMS database
unless you modify it. Speaker View labels can be modified
at any time, allowing you to customize how you view the
data. In addition, any 700-HP can be physically identified
from RMS software by activating the Wink function – a Wink
LED will turn on the RMS communication board that corresponds to its Node Name.
A 700-HP is identified using the RMS software by activating the “service” function; an icon will show up on the RMS
screen corresponding to its Node Name (Figure 4.2). This
makes verifying Speaker View titles and speaker field labels
easy, using the Wink or Service Button commands.
Figure 4.2. RMS loudspeaker icons
UNDERSTANDING THE RMS COMMUNICATION
MODULE’S USER PANEL
The RMS communication module's user panel, shown in
Figure 4.3, has three LEDs and two buttons. The following
sections describe their functions.
Figure 4.3. The RMS user panel
Figure 4.1. Commissioning a loudspeaker using RMS
Service LED (Red)
When blinking once every two seconds, the Service LED
indicates that the network hardware is operational, but the
loudspeaker is not installed (commissioned) on the network.
When a loudspeaker has been installed on the network,
the Service LED will be unlit and the Activity LED will flash
continuously.
NOTE: When continuously lit, the Service
LED indicates that the loudspeaker has had
a local RMS hardware failure. In this case, the RMS
communication module may be damaged and you
should contact Meyer Sound Technical support.
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CHAPTER 4
Service Button
Pressing the Service button will notify the corresponding
loudspeaker display icon on the RMS screen. When used in
combination with the Reset button, the card will be decommissioned from the network and the red Service LED will
blink.
Wink LED (green)
When lit, the Wink LED indicates that an ID signal has been
sent from the host station computer to the loudspeaker.
This is accomplished using the Wink button on the loudspeaker Icon, Meter or Text views in the RMS monitoring
program.
Reset Button
Pressing the Reset button will cause the firmware code within the RMS card to reboot.
However, the commissioning state of the card
will not change (this is stored in flash memory).
When used in combination with the Service Button, the card will be decommissioned from the
network and the red Service LED will blink.
USER INTERFACE
The RMS software features an intuitive, graphical Windows
user interface. As mentioned earlier, each loudspeaker
appears on the computer’s color monitor as a “view” in
the form of a status icon, bar graph meter, or text meter
(numerical values), depending on your preferences.
Each view contains loudspeaker identification and data
from the unit’s amplifier, controller, drivers and power
supply. System status conditions cause changes in icon
and bar graph indicators, alerting the operator to faults or
excessive levels. The views are moveable and are typically
arranged on the screen to reflect the physical layout of the
loudspeakers. You can design a screen “panel” of icons or
meters, as shown in Figure 4.4, and save it on the computer’s hard disk, with the panel conveniently named for a
unique arrangement or performer.
Activity LED (Green)
When the loudspeaker has been commissioned,
the Activity LED will flash continuously. When
the Activity LED is unlit the loudspeaker has not
been installed on the network.
NOTE: The LEDs and buttons on the
user panel of the RMS communication board shown back in Figure 4.3 are used
exclusively by RMS, and have no effect on the
acoustical and/or electrical activity of the 700-HP itself – unless MUTE or SOLO is enabled at the board
and from the RMS software.
Figure 4.4. The RMS application’s user interface
If the installation pattern changes completely, a new screen
panel can be built. If a subset of installed loudspeakers will
be used for a subsequent event, only selected loudspeakers need to appear on screen for that performance.
NOTE: For more information on RMS, please
visit www.meyersound.com, or refer to the
RMS User Guide included with the software.
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CHAPTER 5: SYSTEM INTEGRATION
CHAPTER 5
USING 700-HP SUBWOOFERS WITH OTHER
MEYER SOUND LOUDSPEAKERS
It’s often necessary to augment mid-high or full-range systems with subwoofers when higher SPL is needed, or the
program content requires additional low-frequency energy
(e.g., the reinforcement of popular music).
The 700-HP subwoofer can achieve frequencies down in
the 28 Hz range, extending the system response appreciably and increasing the acoustic power of the system in
the lowest frequencies. In addition, the use of high-pass
and/or low-pass filters to drive a system with subwoofers
can improve the interaction between the subwoofers and
the system in the crossover area as well as increase the
system’s headroom.
The ideal ratio of 700-HP subwoofers with respect to other
loudspeakers in the system depends on:
■ The loudspeaker type being used in conjunction with
the 700-HP (MILO, MSL-4, M2D, CQ-1, etc.)
■ The configuration of the system, whether flown or
ground stacked
■ The frequency content of the signal being reproduced
by the system, e.g., classical music, rock or speech
When considering the ratio of loudspeakers to subwoofers in a system, it’s important to consider not only the
frequency response for the system, but also the required
headroom.
Common applications for the 700-HP involve using the
subwoofer with M Series and Concert Series loudspeakers. In most circumstances, two loudspeakers for each
subwoofer yields good results in frequency response and
headroom. In demanding low-frequency applications, using higher ratios (for example, three loudspeakers for one
subwoofer) can have negative consequences — decreasing
the headroom at the low end of the spectrum and exposing
the 700-HP drivers to excessive power levels.
700-HP USED WITH CONCERT AND
ULTRASERIES
All Meyer Sound products have been optimized with internal crossover networks. When Meyer Sound loudspeakers are used in close proximity and are coplanar, these
networks provide maximum power addition through their
respective overlapping frequency ranges.
Several basic connection options are available when using
the 700-HP subwoofer with other Meyer Sound Concert
or UltraSeries loudspeakers, as discussed in the following
sections.
Daisy-Chained
If 700-HP subwoofers and other Meyer Sound loudspeakers are daisy-chained using the loop feature on the user
panel, the result is a smooth frequency response through
the “overlap range.” When the 700-HP and the other Meyer
Sound loudspeakers are coplanar, this usually occurs at a
ratio of two loudspeakers to each 700-HP. This is the configuration commonly used in small systems.
NOTE: Full-range signals may be applied to
Meyer Sound’s self-powered loudspeakers
and subwoofers because they have built-in active
crossovers.
The 700-HP subwoofers should be placed as close as possible to the other loudspeakers so that the relative distances between them are the same at all listening positions.
NOTE: There is no polarity switch on the
700-HP and it is wired pin 2 “hot” (positive
acoustic pressure when a positive pulse is applied
to pin 2).
CAUTION: The 700-HP’s limit LEDs indicate
when the safe power level is exceeded. If
the subwoofers used in the system begin to limit
before reaching the required SPL at low frequencies,
consider adding more subwoofers to satisfy the SPL
requirements without exposing the drivers to excessive heat and/or excursion.
NOTE: When 700-HP subwoofers are used
with Concert Series or UltraSeries loudspeakers in their full-range configuration (e.g.,
looped audio or the same audio feed), their polarities should be kept the same (set the switch on
the rear of the loudspeaker to Pin 2+) if they are
coplanar or near each other. If they are separated by
a greater distance — or delay must be used between them — a measurement system such as the
SIM audio analyzer should be used to determine the
correct delay and polarity.
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CHAPTER 5
CAUTION: When daisy-chaining, make sure
that the source equipment can drive the total
load of the paralleled array. (See “Chapter 3: Amplification and Audio” on page 9.)
Adding an LD-1A/LD-2 Line Driver
Figure 5.2. The LD-2 line driver
USING THE 700-HP WITH M SERIES LOUDSPEAKERS
Driving 700-HP subwoofers and Meyer Sound loudspeakers with the same signal from different outputs using a line
driver allows adjustments to the gain of each sub-system,
and could be used effectively to compensate for the ratio of
loudspeakers or acoustical conditions. If the gains are adjusted to the same level, the combined response is identical
to a daisy-chained configuration.
Using the LD-1A/LD-2’s Lo-Cut Filter
Using the Lo-Cut filter of the LD-1A or LD-2 (Figures 5.1
and 5.2, respectively) optimizes the full-range loudspeaker
headroom and reduces the area of overlap; the full-range
loudspeakers in the system receive their signal following
a Lo-Cut (high-pass) filter, while the 700-HP subwoofers
apply their normal internal crossover frequencies to a fullrange signal. This configuration results in a smooth frequency response through crossover and reduces the overlap
frequency range between the speakers. However, the use of
external filters – like the Lo-Cut in the LD-1A/LD-2 – is optional, and should be used very carefully to minimize phase
shifts that can cause cancellations in the overlap area.
NOTE: When driving Concert or UltraSer-
ies loudspeakers from the Mid-Hi output
of the LD-1A or LD-2 line driver, with the Lo-Cut
filter engaged and the 700-HP subwoofers in their
full-range configuration, a change of polarity on the
Sub Output might be needed due to the phase shift
caused by the high-pass filter at overlapping frequencies. Placing the subwoofers more than 4 feet
apart may require reversing the polarities once again
to compensate for the delay propagation. If they are
separated by a greater distance — or delay must
be used between them — a measurement system
such as the SIM audio analyzer should be used to
determine the correct delay and polarity.
The 700-HP integrates easily with M Series linear and curvilinear arrays. The 700-HP can be flown using the optional
MRK-700 rigging kit and MTG-700 top grid in a straight
array next to an M Series array, or ground stacked.
NOTE: There is no polarity switch on the
700-HP and it is wired pin 2 “hot” (positive
acoustic pressure when a positive pulse is applied
to pin 2), making its integration when coplanar
— and in close-proximity — easier when flown or
ground stacked with M Series arrays.
700-HP subwoofers should be kept as close as possible to
M Series loudspeakers to avoid phase errors and cancellation in some seating locations. Ideally, the arrays should not
be separated by more than 3 feet.
NOTE: If the 700-HP subwoofers are placed
more than 4 feet away from the M Series
array, you may need to set the 700-HP and the M
Series loudspeakers to opposite polarities.
Adding an LD-3 Compensating Line Driver
Full-range signals may be applied to Meyer Sound’s selfpowered loudspeakers and subwoofers because they have
built-in active crossovers. However, the use of external
filters — like the ones in the LD-3 compensating line driver
(Figure 5.3) — is highly recommended, especially in medium-to-large systems.
Figure 5.1. The LD-1A line driver
16
Figure 5.3. The LD-3 compensating line driver
Page 23
Using the LD-3’s filters helps to easily integrate and optimize your M Series array with 700-HP subwoofers. The
use of high-pass filters (HPF) augment array headroom by
removing lower frequencies near the array loudspeaker’s
lower operating range, while low-pass filters (LPF) can
remove unwanted mid-low frequencies reproduced by the
array or stack of subwoofers. The use of these filters reduces the area of overlap and minimizes the interaction and
possible cancellations between subsystems, usually resulting in highly desirable behavior, such as very flat frequency
response.
As shown in Tables 5.1 through 5.3, the LD-3’s filtering
capabilities can go a long way toward fine-tuning your
system, when using the 700-HP subwoofer with M Series
loudspeakers. All data in these tables are based on designs
in a close-proximity, coplanar orientation, at a 2:1 ratio of
loudspeakers to subwoofers. Out of all possible combinations, these yield the flattest frequency response.
Table 5.1. MILO Models and 700-HP
HPF LPF ø Reverse Switch Result
Off Off Engaged Boost in the 100 Hz
region
160 Off Engaged Very flat response
80 80 Off Very flat response
160 80 Off Flat response
Table 5.2. M3D and 700-HP
HPF LPF ø Reverse Switch Result
Off Off Engaged Flat response
Off 55 Engaged Flat response
80 55 Off Very flat response,
+6 dB sub gain
recommended
160 80 Off Very flat response,
+6 dB sub gain
recommended
CHAPTER 5
NOTE: When driving the system using the
LD-3 with the filters engaged, a change of
polarity on the Sub Output might be needed due to
the phase shift caused by the filters at overlapping
frequencies. Placing the subwoofers more than 4
feet apart may require reversing the polarities once
again to compensate for the delay propagation. If
they are separated by a greater distance — or delay
must be used between them — a measurement system such as the SIM audio analyzer should be used
to determine the correct delay and polarity.
700-HP USED IN COMBINATION WITH THE
650-P SUBWOOFER
With its different low-frequency drivers, amplification and
cabinet tuning, output capabilities and extended low-end
headroom, the 700-HP is not the same subwoofer as Meyer
Sound’s 650-P. However, the phase response of both models is identical, making it possible to deploy 700-HP/650-P
combinations.
For this situation, three 650-P subwoofers should be used
for every two 700-HP subwoofers to avoid over-working
the 650-Ps while fully utilizing the 700-HP’s output power.
Although both models will, in general, limit in approximately
the same way, their exact limiting behavior will vary with the
frequency content of the signal fed to the subwoofers.
NOTE: There is no polarity switch on the
700-HP and it is wired pin 2 “hot” (positive
acoustic pressure when a positive pulse is applied
to pin 2). When 700-HP subwoofers are used with
650-P subwoofers, their polarities must be kept the
same (set the switch on the rear of the 650-P to
Pin 2+).
Table 5.3. M2D and 700-HP
HPF LPF ø Reverse Switch Result
Off 55 Off Flat response,
-6 dB sub gain
recommended*
80 80 Engaged Very flat response,
-6 dB sub gain
recommended*
* Unlike the matched sensitivity of the M2D and M2D-Sub, the 700-HP is +6 dB more sensitive
than the M2D/M2D-Sub.
NOTE: The use of external filters — like the
ones in the LD-3 — should be used very
carefully to minimize phase shifts that can cause
cancellations.
Digital Signal Processors
Full-range signals may be applied to Meyer Sound’s selfpowered loudspeakers because they have built-in active
crossover circuits; external crossovers and digital signal
processors (DSP) are optional and should be used very
carefully due to phase shifts that can cause cancellations.
If DSP is used, both Meyer Sound loudspeakers and 700HP subwoofers should be fed from the DSP in order to keep
their delay time the same. Otherwise, you may experience
phase shift differences between the loudspeakers and the
subwoofers. In addition, you should verify the delay time
between channels. Some DSPs may develop channelto-channel delay errors when the DSP is near maximum
throughput, which becomes more likely as the number of
filters the DSP is using increases.
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CHAPTER 5
In no case should a filter higher than 2nd order be used. The
additional phase shift introduced deteriorates the impulse
response and higher roll-off does not improve crossover
interaction. In fact, it is highly recommended that the
crossover/filter be set to emulate the low-cut LD-1A/LD-2
characteristics themselves, as shown in Table 5.4.
Table 5.4. LD-1 / LD-2 “Lo-Cut Filter” Parameters (160 Hz
HPF in the LD-3)
Type Order Pole
Frequency
High Pass 2nd (-12 dB/oct) 162 Hz 0.82*
* If the DSP does not have variable Q for high-pass filters, the filter
should be set to “Butterworth” (Q ≈ 0.7).
TIP: All other filters on the LD-3 are parabolic
filters with minimal phase shift; most commercially available DSP devices have no presets to
emulate the LD-3’s parabolic filters.
Q
CAUTION: If the loudspeakers are going
to be driven directly from the DSP, verify
that the outputs of the processor have the driving
capabilities to drive the total load presented by the
loudspeakers connected to it. Please refer to the
Audio Input section of “Chapter 3: Amplification and
Audio.”
NOTE: When precise array design,
subwoofer integration, DSP and delay systems, and compensation for acoustical conditions
all come into play, measurement and correction
tools are a must. Meyer’s SIM audio analyzer system; LD-1A/LD-2, LD-3 line drivers; CP-10 parametric equalizer; and the VX-1 program equalizer are
highly recommended.
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CHAPTER 6: SYSTEM DESIGN AND INTEGRATION TOOLS
CHAPTER 6
Meyer Sound offers two comprehensive tools to assist you
with the acoustical and functional requirements of system
design and optimization. The chapter introduces you to
Meyer Sound MAPP Online, a powerful online acoustical
prediction tool, and SIM, a robust instrumentation package
for system measurement, analysis, and more.
MEYER SOUND MAPP ONLINE
MAPP Online is a powerful, cross-platform, Java-based
application for accurately predicting the coverage pattern,
frequency response, impulse response, and maximum SPL
output of single or arrayed Meyer Sound loudspeakers.
As its name indicates, MAPP Online is an online application: when a prediction is requested, data is sent over the
Internet to a high-powered server at Meyer Sound that
runs a sophisticated acoustical prediction algorithm using
high-resolution, complex (magnitude and phase) polar data.
Predicted responses are returned over the Internet and
displayed on your computer in color.
With MAPP Online, you can:
■ Plan an entire portable or fixed loudspeaker system and
determine delay settings for fill loudspeakers.
■ Clearly see interactions among loudspeakers and minimize destructive interference.
■ Place microphones anywhere in
the sound field and predict the
frequency response, impulse response, and sound pressure level
at the microphone position using
MAPP Online’s Virtual SIM feature.
■ Refine your system design to
provide the best coverage of the
intended audience area.
■ Use a virtual VX-1 program equalizer to predetermine the correct
control settings for best system
response.
Figure 6.1. MAPP Online is an intuitive, powerful system design tool.
Residing on your computer, MAPP Online facilitates configuring arrays of a wide variety of Meyer Sound products
and, optionally, defines the environment in which they will
operate, including air temperature, pressure, and humidity,
as well as the location and composition of walls. You can
find MAPP Online at:
www.meyersound.com/mapponline
NOTE: To use MAPP Online, you will need to
register by clicking “Apply for MAPP Online”
on the Web site listed above. After registration and
upon approval, an email will be sent to you with a
username and password along with the address for
the Web site where you can download MAPP Online. Online instructions will guide you through the
download and setup process.
■ Gain valuable load information
about the array to determine rigging capacities.
MAPP Online enables you to come to
an installation prepared with a wealth
of information that ensures the sys-
tem will satisfy your requirements “out
of the box” – including basic system delay and equalization
settings. Its accurate, high-resolution predictions eliminate
unexpected onsite adjustments and coverage problems.
With MAPP Online, every sound system installation has a
maximum chance of success.
MAPP Online is compatible with Windows, Linux, Unix,
and Apple® Macintosh® computers running Mac OS® X
version 10.1.2 or higher. The MAPP Online Web page above
lists additional system requirements and recommendations.
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CHAPTER 6
SIM MEASUREMENT SYSTEM
The SIM audio analyzer system includes a selection of hardware and software options, microphones and accessory
cables.
The SIM audio analyzer system is optimized for making audio frequency measurements of an acoustical system with
a resolution of up to 1/48th of an octave; the high resolution enables you to apply precise electronic corrections to
adjust system response using frequency and phase (time)
domain information.
Source Independent Measurement Technique
The SIM audio analyzer implements the Meyer Sound
source independent measurement technique, a dual-channel method that accommodates statistically unpredictable
excitation signals. Any excitation signal that encompasses
the frequency range of interest (even intermittently) may be
used to obtain highly accurate measurements of acoustical
or electronic systems. For example, concert halls and loudspeaker systems may be characterized during a musical
performance using the program as the test signal, allowing
you to:
■ View measurement data as amplitude versus time
(impulse response) or amplitude and phase versus frequency (frequency response)
Applications
The main application of the SIM audio analyzer is loudspeaker system testing and alignment. This includes:
■ Measuring propagation delay between the subsystems
to set correct polarities and set very precise delay times
■ Measuring variations in frequency response caused by
the acoustical environment and the placement and interaction of the loudspeakers to set corrective equalization
■ Optimizing subwoofer integration
■ Optimizing loudspeaker arrays
The SIM audio analyzer can also be used in the following
applications:
■ Microphone calibration and equalization
■ Architectural acoustics
■ Transducer evaluation and correction
■ Echo detection and analysis
■ Vibration analysis
■ Underwater acoustics
■ Utilize a single-channel spectrum mode
■ View frequency domain data with a logarithmic frequen-
cy axis
■ Determine and internally compensate for propagation
delays using SIM 3 Delay Finder function
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CHAPTER 7: QUICKFLY RIGGING
CHAPTER 7
The 700-HP features Meyer Sound’s QuickFly® rigging
system with rugged, reliable and simple components that
remain captive in transit. QuickFly rigging facilitates constructing rigid ground-stacked or flown 700-HP arrays, and
eases integration of 700-HP subwoofers with full-range line
or curvilinear arrays.
CAUTION: All Meyer Sound products must
be used in accordance with local, state, federal and industry regulations. It is the owner’s and/or
user’s responsibility to evaluate the reliability of any
rigging method for their application. Rigging should
be carried out only by experienced professionals.
CAUTION: Always use properly rated rigging
hardware.
CAUTION: It is important to inspect rigging
hardware regularly and replace worn or damaged components immediately.
MRK-700 RIGGING KIT
The MRK-700 rigging kit utilizes the rugged, straight rigging
links and QRPs to connect adjacent subwoofers in groundstacked or flown array configurations (Figure 7.1).
Figure 7.1. Two cabinets rigged using the MRK-700 rigging kit
CAUTION: Use only MAL-700 straight rig-
ging links when connecting two 700-HP
subwoofers. Never use MTG-700 rigging links to
connect 700-HP subwoofers.
The MRK-700 rigging kit is required to attach the 700-HP
ultrahigh-power subwoofer to the MTG-700 top grid. This
optional rigging kit is available installed at the factory or as
a field upgrade, and includes:
■ 4 MRB-700 rigging bars
■ 4 MAL-700 straight rigging links
■ 8 3/8” x 1.125” quick release pins (QRP)
CAUTION: To upgrade your 700-HP with
the MRK-700 rigging kit, please refer to the
document 700-HP Rigging Grid and Accessories
Assembly Guide available at www.meyersound.com
The MAL-700 straight rigging links can be securely stowed
for transport links in the bottom cavities of the MRB-700 rigging bars attached to the 700-HP subwoofer (Figure 7.2). By
leaving the top pins in place and keeping the links captive,
the links and pins are always ready for use.
Figure 7.2. The MAL-700 rigging links can be stowed for transport inside the
MRB-700 rigging bars.
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CHAPTER 7
MTG-700 MULTIPURPOSE GRID
The MTG-700 top grid is a very straightforward solution for
rigging 700-HP subwoofers, allowing multiple cabinets to
be flown in a straight array. The MTG-700 top grid can accommodate a variety of pickup configurations using its six
pick-up points, three on each side of the frame (Figure 7.3).
NOTE: For more information on load ratings
and how to set up the MTG-700, please use
the 700-HP Rigging Grid and Accessories Assembly
Guide available at www.meyersound.com.
The four MTG-700 rigging links are used to connect the grid
to the top subwoofers in the array (Figure 7.4).
Figure 7.4. Multiple 700-HP subwoofers can be supported by the MTG-700
multipurpose grid.
Figure 7.3. Flying a 700-HP array is easily achieved with the MTG-700 top
grid (3 to 2 corner/center point pickup configuration shown).
The MTG-700 top grid is supplied with:
■ 1 MTG-700 top grid assembly
■ 4 MTG-700 rigging link
■ 8 3/8" x 1.125" QRPs
CAUTION: Use only MTG-700 rigging links
with the MTG-700 top grid. Never use the
standard MAL-700 straight rigging links when connecting a 700-HP subwoofer to the MTG-700 top
grid.
For convenient storage, each of the four MTG-700 rigging
links can be stowed in the MTG-700 top grid, and secured
with the 3/8" x 1.125" QRPs (Figure 7.5).
Figure 7.5. The MTG-700 rigging links are stowed in the MTG-700 top grid
during transport.
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CHAPTER 7
MCF-700 CASTER FRAME
The heavy-duty MCF-700 caster frame (Figure 7.6) is highly
durable and easy to attach to a 700-HP ultrahigh-power
subwoofer.
Figure 7.6. The MCF-700 caster frame
NOTE: The MCF-700 caster frame can be
they are fitted with the MRK-700 rigging kit.
Whether you’re deploying or striking a 700-HP array, the
MCF-700 can support the weight of the array, making it
easy to assemble or disassemble by using blocks of up to
three 700-HP subwoofers.
used with 700-HP subwoofers regardless if
For safety reasons and to avoid any damage to the enclosures, use straps when transporting a stack (Figure 7.7),
especially if the cabinets are not fitted with the MRK-700
rigging kit. The MCF-700 caster frame includes slots on the
sides for this purpose.
CAUTION: Do not exceed three 700-HP
subwoofers high on a block to avoid tipping
over the stack.
TIP: You can also transport the MTG-700
attached to the top 700-HP on a stack.
The MCF-700’s rugged steel frame allows the use of a
forklift.
CAUTION: When lifting a block with a forklift,
always keep the forks wide – close to the
MCF-700 caster frame’s wheels. Doing otherwise
(for example, moving the forks together in the center) may bend the frame.
Figure 7.7. MCF-700 caster frame supporting 3 700-HP subwoofers in a
ground-stack
A range of protective covers is available.
In addition to transport, the MCF-700 also allows 700-HP
subwoofers to be supported in a ground-stacked configuration.
CAUTION: When using the MCF-700 caster
frame to ground-stack 700-HP subwoofers, make sure all four caster wheels are blocked to
prevent the stack from rolling away.
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CHAPTER 7
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APPENDIX A: AMPLIFIER REPLACEMENT AND OPTIONAL RAIN HOOD
APPENDIX A
USING THE RAIN HOOD
(WEATHER-PROTECTED LOUDSPEAKERS)
If your 700-HP loudspeaker was ordered with optional
weather protection, a rain hood is installed. It is provided to
protect the loudspeaker’s electronics from direct exposure
to rainfall. Before using the 700-HP loudspeaker, open the
rain hood as described in the following procedure.
1. Pull the exterior Velcro straps off the hood to allow it to
open.
2. Lift the flap fully outward, and unfold the fabric of the
rain hood.
3. With your other hand, reach into the hood and free the
two PVC supports from their corner pockets in the outer
flap.
4. Fold both supports out and re-insert them into the two
pockets, shown in Figure A.1, in the lower corners of
the soft side flaps. This will hold the rain hood fully open
for use, which is necessary for proper cooling of the
700-HP loudspeaker’s electronics.
REMOVING THE HP-2/700 AMPLIFIER
If you need to remove the amplifier from a 700-HP loudspeaker, perform the following steps:
1. Using a #2 Phillips screwdriver, remove all eight screws
from the amplifier module. This will free the HP-2/700
electronics module from the cabinet (Figure A.3).
Figure A.3. Location of the eight screws securing the HP-2/700
amplifier module
2. Carefully slide the amplifier module out of the cabinet
using care not to stress the cables.
Figure A.1. Rain hood stiffener pockets
Figure A.2 shows an example of an installed rain hood.
Figure A.2. A fully opened rain hood installed on a 700-HP
CAUTION: When operating a weather-pro-
tected 700-HP loudspeaker be sure the rain
hood is fully open. Leaving the hood closed or partially open will limit the airflow through the amplifier,
which could cause it to overheat and shut down.
3. Disconnect the 4-pin loudspeaker connector.
Replacing the HP-2/700 Amplifier
To replace the amplifier, do the following:
1. Gently slide the amplifier partially back into 700-HP and
connect the loudspeaker connector.
TIP: Avoid pinching wires behind the fans;
if necessary, reach in and guide the wire(s)
toward you as you slide the amplifier into place.
2. Start all eight screws into the holes before tightening
them.
3. Once all eight screws are started, tighten them using a
#2 Phillips screwdriver.
4. Tighten the inner four screws first, then tighten the
remaining four corners.
CAUTION: Never use power tools in high
torque settings to remove or replace the
stainless steel amplifier and/or rain hood screws on
the 700-HP loudspeaker.
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APPENDIX A
REMOVING THE HP-2/700 AMPLIFIER
(WITH RAIN HOOD)
If you need to remove and replace the amplifier from a
weather-protected loudspeaker, first remove the rain hood,
then remove the amplifier following the steps described in
the previous section. Note that the rain hood is attached to
the amplifier using the same screws that attach the amplifier to the cabinet.
Replacing the HP-2/700 Amplifier and Rain Hood
Perform the following steps to replace amplifier and rain
hood:
1. Gently slide the amplifier partially back into 700-HP and
connect the loudspeaker connector.
2. With the wires properly connected, slide the amplifier all
the way into its cabinet.
TIP: Avoid pinching wires behind the fans;
if necessary, reach in and guide the wire(s)
toward you as you slide the amplifier into place.
3. Check to be sure that all three steel bars are correctly
inserted in the three fabric pockets of the hood.
NOTE: The bars must be inside the fabric
pockets to achieve proper water protection.
4. Carefully install the fabric rain hood, using the stainless
steel screws and washers.
5. Align all eight screws and make sure that the washers
are over the fabric.
6. Start all eight screws into the holes before tightening
them.
7. Use the screws to sandwich the fabric and its gasket
reinforcement bar over the external gasket.
8. Once all eight screws are started, tighten them using a
#2 Phillips screwdriver.
9. Tighten the inner four screws first, then tighten the
remaining four corners.
CAUTION: Never use power tools in high
torque settings to remove or replace the
stainless steel amplifier and/or rain hood screws on
the 700-HP loudspeaker.
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APPENDIX B
700-HP SPECIFICATIONS
ACOUSTICAL
Operating frequency range 28 Hz - 150 Hz
Note: Recommended maximum operating frequency range. Response depends upon
loading conditions and room acoustics.
Frequency response 30 Hz - 125 Hz ±4 dB
Note: Free field, measured with 1/3 octave frequency resolution at 4 meters.
Phase response 45 Hz - 145 Hz ±30°
Maximum peak SPL 139 dB
Note: Measured with music at 1 meter.
Dynamic range >110 dB
Coverage 360° (single unit); varies with number of units and configuration
TRANSDUCERS
Low frequency Two 18" cone drivers
Nominal impedance: 4 Ω
Voice coil size: 4"
Power-handling capability: 1200 W (AES)
Note: Power handling is measured under AES standard conditions: transducer driven con-
tinuously for two hours with band limited noise signal having a 6 dB peak-average ratio.
APPENDIX B
AUDIO INPUT
Type Differential, electronically balanced
Max. common mode range ±15 V DC, clamped to earth for voltage transient protection
Connectors Female XLR input with male XLR loop output or VEAM all-in-one (integrates AC, audio &
network)
Input impedance 10 kΩ differential between pins 2 and 3
Wiring Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual
ground lift at audio frequencies
Pin 2: Signal +
Pin 3: Signal -
Case: Earth ground and chassis
DC Blocking None on input, DC blocked through signal processing
CMRR >50 dB, typically 80 dB (50 Hz – 500 Hz)
RF filter Common mode: 425 kHz; Differential mode: 142 kHz
TIM filter Integral to signal processing (<80 kHz)
Nominal input sensitivity 0 dBV (1 V rms, 1.4 V pk) continuous is typically the onset of limiting for noise and music.
Input level Audio source must be capable of producing a minimum of +20 dBV (10 V rms, 14 V pk)
into 600 ohms in order to produce maximum peak SPL over the operating bandwidth of the
loudspeaker.
AMPLIFIER
Amplifier type Two-channel complementary power MOSFET output stages (class AB/H)
Output power 2250 W (1125 W/channel)
Note: Amplifier wattage rating is based on the maximum unclipped burst sine-wave rms
voltage the amplifier will produce into the nominal load impedance. Both channels 67 V
rms (95 V pk) into 4 ohms.
THD, IM TIM < .02%
Load capacity 4 Ω each channel
Cooling Forced air cooling, two fans (one ultrahigh-speed reserve fan)
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APPENDIX B
30.00"
[762 mm]
30.00"
[762 mm]
22.50"
[572 mm]
22.50"
[572 mm]
45.93"
[1167 mm]
AC POWER
AC power connector 250 V NEMA L6-20 (twist lock), IEC 309 male inlet or VEAM
Voltage selection Automatic, two ranges, each with high-low voltage tap �
Safety agency rated
95 V AC - 125 V AC; 208 V AC - 235 V AC; 50/60 Hz
operating voltage
Turn on/turn off points 85 V AC - 134 V AC; 165 V AC - 264 V AC; 50/60 Hz
Current Draw
Idle current 0.640 A rms (115 V AC); 0.320 A rms (230 V AC); 0.850 A rms (100 V AC)
Max. long-term continuous
8.8 A rms (115 V AC); 4 A rms (230 V AC); 10 A rms (100 V AC)
current (>10 sec)
Burst Current (<1 sec) 19 A rms (115 V AC); 9.5 A rms (230 V AC); 22 A rms (100 V AC)
Ultimate Short-Term Peak
39 A pk (115 V AC); 20 A pk (230 V AC); 45 A pk (100 V AC)
Current Draw
Inrush Current 7 A pk (115 V AC); 7 A pk (230 V AC); 10 A pk (100 V AC)
RMS NETWORK (Optional)
Equipped for two-conductor twisted-pair network, reporting all operating parameters of
amplifiers to system operator’s host computer.
PHYSICAL
Enclosure Premium birch plywood
Finish Black textured
Protective grille Perforated metal grille lined with acoustical black mesh
Rigging Optional QuickFly rigging kit available, with aluminum and steel side-rigging bars,
AlignaLinks and quick release pins
Dimensions
Dimensions with rigging
Weight
Weight with rigging
45.93" w x 22.50" h x 30.00" d (1167 mm x 572 mm x 762 mm)
50.90" w x 22.50" h x 30.00" d (1293 mm x 572 mm x 762 mm)
204 lbs (92.53 kg)
259 lbs (117.48 kg)
700-HP 700-HP with rigging
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Page 36
Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
www.meyersound.com
T: +1 510 486.1166
F: +1 510 486.8356
© 2004
Meyer Sound Laboratories Inc.
05.137.094.01 A
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