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OPERATING INSTRUCTIONS
LYON™ Linear Line Array Loudspeaker
LINE ARRAY
Keep these important operating instructions.
Check www.meyersound.com for updates.
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© 2014–2020
Meyer Sound. All rights reserved.
LYON Operating Instructions, PN 05.232.005.01 B3
The contents of this manual are furnished for informational purposes only, are subject to change without notice, and should not be
construed as a commitment by Meyer Sound Laboratories Inc. Meyer Sound assumes no responsibility or liability for any errors or
inaccuracies that may appear in this manual. Except as permitted by applicable copyright law, no part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording or otherwise,
without prior written permission from Meyer Sound.
CAL, Compass Go by Meyer Sound, Compass RMS, Intelligent AC, LEO-M, LEOPARD, LYON, MAPP, RMS, UltraSeries, and all alpha-
numeric designations for Meyer Sound products and accessories are trademarks of Meyer Sound. Meyer Sound, Compass, Constellation,
Galileo, LEO, QuickFly, Spacemap, Thinking Sound, TruPower, TruShaping, and U-Shaping, 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.
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IMPORTANT SAFETY INSTRUCTIONS
These symbols indicate important safety or operating features in this booklet and on the frame or chassis:
SYMBOLS USED
Dangerous voltages:
risk of electric shock
Gefährliche
Spannungen:
Stromschlaggefahr
Pour indiquer les
risques
résultant de tensions
dangereuses
Para indicar voltajes
peligrosos
Important operating
instructions
Hinweis auf wichtige
Punkte der
Betriebsanleitung
Instructions d'utilisation
importantes
Instrucciones
importantes
de funcionamiento y/o
Mantenimiento
Replaceable FuseProtective earth groundHot surface: do not
Austauschbare
Fusible remplaçableTerre de protectionSurface chaude:
Fusible reemplazableToma de tierra de
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance
with Meyer Sound's installation instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus that produce heat.
9. Do not defeat the safety purpose of the grounding-type
plug. A grounding type plug has two blades and a third
grounding prong. The third prong is provided for your
safety. If the provided plug does not fit into your outlet,
consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus. The AC mains plug or
appliance coupler shall remain readily accessible for
operation.
11. Only use attachments/accessories specified by Meyer
Sound.
12. Use only with the caster rails or rigging specified by Meyer
Sound, or sold with the apparatus. Handles are for carrying
only.
touch
Sicherung
SchutzerdeHeiße Oberfläche:
protección
nicht berühren
ne pas toucher
Superficie caliente:
no tocar
13. Unplug this apparatus during lightning storms or when
unused for long periods of time.
14. If equipped with an external fuse holder, the replaceable
fuse is the only user-serviceable item. When replacing the
fuse, only use the same type and the same value.
15. Refer all other servicing to qualified service personnel.
Servicing is required when the apparatus has been
damaged in any way, such as when the power-supply cord
or plug has been damaged; liquid has been spilled or
objects have fallen into the apparatus; rain or moisture has
entered the apparatus; the apparatus has been dropped; or
when for undetermined reasons the apparatus does not
operate normally.
WARNING: To reduce the risk of fire or electric
shock, do not expose this apparatus to rain or
moisture. Do not install the apparatus in wet or
humid locations without using weather protection equip-
ment from Meyer Sound.
WARNING: Class I apparatus shall be connected
to a mains socket outlet with a protective earthing
connection.
CAUTION: Disconnect the mains plug before
disconnecting the power cord from the loud-
speaker.
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LYON OPERATING INSTRUCTIONS
English
•To reduce the risk of electric shock, disconnect the appara-
tus from the AC mains before installing audio cable. Recon-
nect the power cord only after making all signal
connections.
•Connect the apparatus to a two-pole, three-wire grounding
mains receptacle. The receptacle must be connected to a
fuse or circuit breaker. Connection to any other type of
receptacle poses a shock hazard and may violate local elec-
trical codes.
•Do not install the apparatus in wet or humid locations with-
out using weather protection equipment from Meyer Sound.
•Do not allow water or any foreign object to get inside the
apparatus. Do not put objects containing liquid on or near
the unit.
•To reduce the risk of overheating the apparatus, avoid
exposing it to direct sunlight. Do not install the unit near
heat-emitting appliances, such as a room heater or stove.
•If equipped with an external fuse holder, the replaceable
fuse is the only item that can be serviced by the user. When
replacing the fuse, only use the same type and value.
•This apparatus contains potentially hazardous voltages. Do
not attempt to disassemble the unit. The only user-service-
able part is the fuse. All other repairs should be performed
only by factory-trained service personnel.
Deutsch
•Zur Minimierung der Gefahr eines elektrischen Schlages
trennen Sie das Produkt vor dem Anschluss von Audio-und/
oder Steuerleitungen vom Stromnetz. Das Netzkabel darf
erst nach Herstellung aller Signalverbindungen wieder
eingesteckt werden.
•Das Produkt an eine vorschriftsgemäss installierte
dreipolige Netzsteckdose (Phase, Neutralleiter, Schutzleiter)
anschließen. Die Steckdose muss vorschriftsgemäß mit
einer Sicherung oder einem Leitungsschutzschalter abgesi-
chert sein. Das Anschließen des Produkts an eine anders
ausgeführte Stromversorgung kann gegen Vorschriften ver-
stossen und zu Stromunfällen führen.
•Das Produkt nicht an einem Ort aufstellen, an dem es direk-
ter Wassereinwirkung oder übermäßig hoher Luft-
feuchtigkeit ausgesetzt werden könnte, solange es sich
nicht um ein Produkt handelt, dass mit der Meyer Sound
Weather Protection Option ausgestattet ist.
•Vermeiden Sie das Eindringen von Wasser oder Fremd-
körpern in das Innere des Produkts. Stellen Sie keine
Objekte, die Flüssigkeit enthalten, auf oder neben dem Pro-
dukt ab.
•Um ein Überhitzen des Produkts zu verhindern, halten Sie
das Gerät von direkter Sonneneinstrahlung fern und stellen
Sie es nicht in der Nähe von wärmeabstrahlenden Geräten
(z.B. Heizgerät oder Herd) auf.
•Bei Ausstattung mit einem externen Sicherungshalter ist die
austauschbare Sicherung das einzige Gerät, das vom Benu-
tzer gewartet werden kann. Verwenden Sie beim Austausch
der Sicherung nur den gleichen Typ und Wert.
•Dieses Gerät enthält möglicherweise gefährliche Spannun-
gen. Versuchen Sie nicht, das Gerät zu zerlegen. Der einzige
vom Benutzer zu wartende Teil ist die Sicherung. Alle
anderen Reparaturen dürfen nur von im Werk geschultem
Servicepersonal ausgeführt werden.
Français
•Pour éviter tout risque d’électrocution, débranchez
l’enceinte de la prise secteur avant de mettre en place le
câble audio.Ne rebranchez le cordon secteur qu’après avoir
procédé à toutes les connexions de signal audio
•Brancher l'appareil sur une prise secteur à trois fils et deux
pôles avec mise à la terre. La prise doit être reliée à un fus-
ible ou à un disjoncteur. Le branchement à tout autre type
de prise présente un risque de choc électrique et peut
enfreindre les codes locaux de l'électricité.
•N’installez pas l’enceinte dans des endroits humides ou en
présence d’eau sans utiliser d’équipements de protection
adéquats fournis par Meyer Sound.
•Ne laissez pas d’eau ou d’objet étranger, quel qu’il soit,
pénétrer à l’intérieur de l’enceinte. Ne posez pas d’objet
contenant du liquide sur ou à proximité de l’enceinte.
•Pour réduire les risques de surchauffe, évitez d’exposer
directement l’enceinte aux rayons du soleil. Ne l’installez
pas à proximité de sources de chaleur, radiateur ou four par
exemple.
•S'il est équipé d'un porte-fusible externe, le fusible rem-
plaçable est le seul élément qui peut être réparé par l'utilisa-
teur. Lors du remplacement du fusible, n'utilisez que le
même type et la même valeur.
•Cet appareil contient des tensions potentiellement dangere-
uses. N'essayez pas de démonter l'appareil.Le fusible est la
seule pièce réparable par l'utilisateur. Toutes les autres
réparations doivent être effectuées uniquement par du per-
sonnel de maintenance formé en usine.
Español
•Para reducir el riesgo de descarga eléctrica, desconecte el
aparato de la red eléctrica antes de instalar el cable de
audio. Vuelva a conectar el cable de alimentación sólo
después de realizar todas las conexiones de señal.
•Conecte el aparato a una toma de corriente de tres hilos y
dos polos con conexión a tierra. El receptáculo debe estar
conectado a un fusible o disyuntor. La conexión a cualquier
otro tipo de receptáculo representa un riesgo de descarga
eléctrica y puede violar los códigos eléctricos locales.
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•No instale el aparato en lugares húmedos o mojados sin
usar el equipo de protección contra intemperie de Meyer
Sound.
•No permita que penetre agua u otros objetos extraños en el
interior del aparato. No coloque objetos que contengan
líquido sobre o cerca de la unidad.
•Para reducir el riesgo de sobrecalentamiento del aparato,
evite exponerlo a la luz solar directa. No instale la unidad
cerca de aparatos que emitan calor, como un calefactor o
una estufa
•Si está equipado con un portafusibles externo, el fusible
reemplazable es el único elemento que puede ser reparado
por el usuario. Cuando reemplace el fusible, use solamente
el mismo tipo y valor.
•Este aparato contiene voltajes potencialmente peligrosos.
No intente desmontar la unidad. La única pieza que el usu-
ario puede reparar es el fusible. Todas las demás repara-
ciones deben ser realizadas únicamente por personal de
servicio capacitado de fábrica.
IMPORTANT SAFETY INSTRUCTIONS
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LYON OPERATING INSTRUCTIONS
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CONTENTS
Important Safety Instructionsiii
Symbols Usediii
Chapter 1: Introduction9
How to Use This Manual9
LYON Linear Line Array Loudspeaker9
Chapter 2: Power Requirements11
AC Power Distribution11
AC Input12
Wiring AC Power Cables12
LYON Voltage Requirements13
LYON Current Requirements13
Do Not Reset Circuit Breakers!13
Intelligent AC Power Supply13
Electrical Safety Guidelines14
Chapter 3: Amplification and Audio15
Audio Connectors15
Cable Rings16
TruPower Limiting16
Amplifier Cooling System17
Chapter 4: QuickFly Rigging19
Important Safety Considerations!19
LYON Rigging Options19
LYON GuideALinks22
When to Move the Locking Pins to the “Stow Pin” Position23
Chapter 5: RMS Remote Monitoring System25
Compass RMS Software25
RMS Module25
Neuron ID for RMS Module26
Resetting the RMS Module26
Chapter 6: System Design and Integration Tools27
MAPP System Design Tool27
Galileo Galaxy Network Platform28
28
Appendix A: Product Integration29
Delay Integration29
Starting Points31
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LYON OPERATING INSTRUCTIONS
Appendix B: Meyer Sound Weather Protection33
Weather Protection Components34
Installation Practices34
IP Ratings35
Appendix C: Rain Hoods37
LYON Collapsible Rain Hood37
LYON Quick-Clip Rain Hood38
Appendix D: Specifications41
LYON-M Dimensions43
LYON-W, LYON-WXT Dimensions44
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CHAPTER 1: INTRODUCTION
HOW TO USE THIS MANUAL
Make sure to read these instructions in their entirety before
configuring a Meyer Sound loudspeaker system. In
particular, pay close attention to material related to safety
issues.
As you read these instructions, you will encounter the
following icons for notes, tips, and cautions:
NOTE: A note identifies an important or useful
piece of information relating to the topic under
discussion.
TIP: A tip offers a helpful tip relevant to the
topic at hand.
CAUTION: A caution gives notice that an
action may have serious consequences and
could cause harm to equipment or personnel, or
could cause delays or other problems.
Information and specifications are subject to change.
Updates and supplementary information are available at
www.meyersound.com
.
LYON LINEAR LINE ARRAY LOUDSPEAKER
The self-powered LYON™ linear line array loudspeaker
(Figure 1) is a member of Meyer Sound’s LEO
linear loudspeakers, designed to reproduce audio faithfully
with tremendous power and clarity, without coloring the
sound, even when pushed to the limit. LYON delivers the
same headroom and precision as the acclaimed
LEO-M
™
—with the same cutting-edge technology housed in
a lighter and more compact cabinet. Optimized rigging and
self-powered configuration streamline both setup and
breakdown for LYON systems. LYON is ideal for medium- to
large-scale array applications that do not require the extreme
long-throw capability of LEO-M.
®
Family of
Meyer Sound Technical Support is available at:
•Tel: +1 510 486.1166
•Tel: +1 510 486.0657 (after hours support)
•Web:
www.meyersound.com/support
Figure 1: LYON Loudspeaker
For greater flexibility, LYON is available in three models:
LYON-M for primary array coverage, LYON-W for wide
coverage, and LYON-WXT for wide coverage with extended
vertical coverage. LYON-W can be used wherever wide
coverage is needed in LYON arrays, at the bottom or in the
middle of primary arrays, or even at the top of outfill arrays.
Because LYON-W matches the acoustical characteristics
and vertical coverage of LYON-M, transitions for horizontal
coverage are seamless. LYON models are matched
acoustically to LEO-M and can be used for downfill and
midfill at the bottom of LEO-M arrays, and as supplemental
sidefill and outfill arrays in LEO-M systems.
LYON arrays are ideally paired with Meyer Sound’s
1100-LFC low-frequency control element for bass
reproduction. Entire systems are driven by Meyer Sound’s
Galileo GALAXY Network Processor, which provides matrix
routing, alignment, and processing for array components. To
guarantee optimum performance, including coverage
patterns and maximum peak SPL, LYON systems should be
designed with Meyer Sound’s MAPP
™
prediction software.
LYON’s high-frequency section comprises two proprietary
compression drivers coupled to a constant-directivity horn
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LYON OPERATING INSTRUCTIONS
through a patented REM® manifold. The manifold’s smooth
radiating characteristics afford tight vertical coverage. The
low-frequency section includes two long-excursion cone
drivers, also proprietary, capable of withstanding high,
continuous output levels. Precise phase and magnitude
alignment between low- and high-frequency drivers yields
consistent and well-behaved system responses.
The unit’s onboard power amplifier operates at nominal
voltages from 85–134 V AC and 165–264 V AC at 50–60 Hz.
TruPower
®
limiting ensures maximum driver protection,
minimizing power compression while yielding high constant
output under high continuous and peak power conditions.
The amplifier, control electronics, and power supply are
contained in a single field-replaceable module located on the
rear of the cabinet.
Meyer Sound’s RMS
™
remote monitoring system comes
standard with all LYON loudspeakers and provides
comprehensive monitoring of system parameters on a Mac
or Windows
®
-based computer. Convenient XLR 5-pin
connectors allow the use of composite cables carrying both
RMS and balanced audio signals. XLR 3-pin audio
connectors are also available.
LYON offers intuitive rigging with captive GuideALinks
™
that
can be set to the desired splay angles while cabinets rest in
caster frames. The optional MTG-LYON top grid (Figure 2)
flies arrays of up to 22 LYONs at a 5:1 safety factor (with
some restrictions—always use MAPP to verify load ratings).
The optional MTF-LEO/LYON transition frame flies LYONs at
the bottom of LEO-M arrays. Stacks of up to four LYON
cabinets can be securely transported with the optional
MCF-LYON caster frame; durable nylon covers,
accommodating stacks of two, three, or four units, are
available to protect the cabinets during transport.
®
The LYON cabinet is constructed of premium multi-ply birch
and coated with a slightly textured black finish. A powder-
coated, hex-stamped, steel grille with acoustical black mesh
protects the unit’s drivers. Other options include weather
protection and custom color finishes for fixed installations
and applications with specific cosmetic requirements.
10
Figure 2: LYON Array with MTG-LYON Top Grid
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CHAPTER 2: POWER REQUIREMENTS
Neutral
Earth/Ground
Line 1 (120 V AC)
Line 3 (120 V AC)
Line 2 (120 V AC)
Loudspeaker
(120 V AC)
Loudspeaker
(120 V AC)
Loudspeaker
(120 V AC)
Neutral
Earth/Ground
Loudspeaker
(208 V AC)
Loudspeaker
(208 V AC)
Loudspeaker
(208 V AC)
Line 1 (120 V AC)
Line 3 (120 V AC)
Line 2 (120 V AC)
LYON combines advanced loudspeaker technology with
equally advanced power capabilities. Understanding power
distribution, voltage and current requirements, and electrical
safety guidelines is critical to the safe operation of LYON.
AC POWER DISTRIBUTION
All components in an audio system (self-powered
loudspeakers, mixing consoles, and processors) must be
properly connected to an AC power distribution system,
ensuring that AC line polarity is preserved and that all
grounding points are connected to a single node or common
point using the same cable gauge (or larger) as the neutral and
line cables.
CAUTION: Make sure the voltage received by
LYON remains within its 85–134 V AC and
165–264 V AC operating ranges. In addition, the
ground line must always be used for safety reasons
and the line-to-ground voltage should never exceed
250 V AC (typically 120 V AC from line to ground).
Figure 3: 120 V AC, 3-Phase Wye System (Single Line to Loudspeakers)
120 V AC, 3-Phase Wye System (Two Lines)
Line-Line-Earth/Ground
Figure 4 illustrates a 120 V AC, 3-phase Wye distribution
system with each loudspeaker connected to two lines and a
common earth/ground line. This configuration is possible
because LYON tolerates elevated voltages from the ground
line and does not require a neutral line. This system delivers
208 V AC to each loudspeaker.
CAUTION: Before applying AC power to any
Meyer Sound self-powered loudspeaker, make
sure that the voltage potential difference between the
neutral and earth-ground lines is less than 5 V AC
when using single-phase AC wiring.
NOTE: Improper grounding of connections
between loudspeakers and the rest of the
audio system may produce noise or hum, or cause
serious damage to the input and output stages of the
system’s electronic components.
120 V AC, 3-Phase Wye System (Single Line)
Line-Neutral-Earth/Ground
Figure 3 illustrates a basic 120 V AC, 3-phase Wye
distribution system with the loudspeaker load distributed
across all three phases, with each loudspeaker connected to
a single line and common neutral and earth/ground lines. This
system delivers 120 V AC to each loudspeaker.
Figure 4: 120 V AC, 3-Phase Wye System (Two Lines to Loudspeakers)
TIP: The 120 V AC, 3-phase Wye system with
two lines is recommended because it allows
loudspeakers to draw less current than with single-
line systems, thereby reducing voltage drop due to
cable resistance. It also excludes the potential of
varying ground to neutral voltages producing an audi-
ble hum.
230 V AC, 3-Phase Wye System (Single Line)
Line-Neutral-Earth/Ground
Figure 5 illustrates a basic 230 V AC, 3-phase Wye
distribution system with the loudspeaker load distributed
across all three phases, with each loudspeaker connected to
a single line and common neutral and earth/ground lines. This
system delivers 230 V AC to each loudspeaker.
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LYON OPERATING INSTRUCTIONS
Neutral
Earth/Ground
Line 1 (230 V AC)
Line 3 (230 V AC)
Line 2 (230 V AC)
Loudspeaker
(230 V AC)
Loudspeaker
(230 V AC)
Loudspeaker
(230 V AC)
Figure 5: 230 V AC, 3-Phase Wye System (Single Line to Loudspeakers)
CAUTION: For 230 V AC, 3-phase Wye
systems, never connect two lines to the AC
input of LYON, as the resulting voltage would exceed
the upper voltage limit (275 V AC) and will damage
the loudspeaker.
WIRING AC POWER CABLES
LYON ships with a black powerCON 32 cable mount
connector (Figure 7), rated at 32 A, for assembling AC power
cables. The pins on the powerCON 32 cable mount connector
are labeled as follows:
•L (Line)
•N (Neutral)
•PE (Protective Earth or Ground)
AC INPUT
The LYON user panel includes an AC Input connector that
supplies power to the loudspeaker. The 3-conductor
PowerCON 32 (Figure 6) is rated at 32 A and uses a locking
connector that prevents accidental disconnections.
Figure 6: PowerCON 32 AC Input Connector
LYON ships with a black powerCON 32 cable mount
connector, rated at 32 A, for assembling AC power cables.
Make sure to use an AC power cable that is wired correctly
(see “Wiring AC Power Cables” on page 12) and equipped
with the appropriate power plug (on the other end) for the area
in which you will operate the unit.
LYON requires a grounded outlet. To operate safely and
effectively, it is extremely important that the entire system be
properly grounded.
12
Figure 7: PowerCON 32 Cable Mount Connector
How AC power cables are wired is determined by the type of
AC power distribution system used (see “AC Power
Distribution” on page 11). When wiring AC power cables for
single-line systems, use one of the wiring schemes described
in Table 1 and illustrated in Figure 8:
Table 1: AC Wiring Scheme
Wire ColorAttach to the
U.S. / Canada
60 Hz
BlackBrownHot or live (L)
WhiteBlueNeutral (N)
GreenGreen and YellowProtective earth /
Black (L)
Green (E)
U.S./Canada, 60 Hz
Figure 8: AC Wiring Scheme, illustrated
European
50 Hz
White (N)
Europe, 50 Hz
Brown (L)
Following
Terminal
ground (E or PE)
Blue (N)
Green/
yellow (E)
CAUTION: When wiring AC power cables and
distribution systems, it is important to preserve
AC line polarity and connect the earth ground on both
ends of the cable. LYON requires a grounded
connection. Always use a grounded outlet and plug.
It is extremely important that the system be properly
grounded to operate safely and properly. Do not
ground-lift the AC cable.
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CHAPTER 2: POWER REQUIREMENTS
Supported PowerCON 32 Cable Gauges
While the powerCON 32 connector supports cable gauges of
14–10 AWG (2.5–6.0 mm
10 AWG (6.0 mm
2
2
), because of LYON’s current draw,
) should be used whenever possible.
LYON VOLTAGE REQUIREMENTS
LYON operates as intended when receiving AC voltage within
the following ranges:
•85–134 V AC, 50–60 Hz
•165–264 V AC, 50–60 Hz
If the voltage drops below 85V, the loudspeaker uses stored
power to continue operating temporarily; the loudspeaker
powers off if the voltage does not return to its operating range.
If the voltage rises above 275 V, the power supply could
become damaged.
CAUTION: The power source for LYON should
always operate within the required operating
range, at least a few volts from the upper and lower
limits. This ensures that AC voltage variations from the
service entry—or peak voltage drops due to cable
runs—will not cause the loudspeaker’s amplifier to
cycle on and off or cause damage to the power supply.
V pk (drop) = I pk x R (cable total)
•Maximum Instantaneous Peak Current — A rating for
fast-reacting magnetic breakers.
•Inrush Current — The spike of initial current encoun-
tered when powering on.
Use the information provided in Table 2 as a guide for
selecting the gauge of cables and the circuit breaker ratings
for the system’s operating voltage.
Table 2: LYON Current Draw
Current Draw208 V AC 230 V AC100 V AC
Idle0.7 A rms 0.6 A rms 1.2 A rms
Maximum Long-
Term Continuous
Burst8.2 A rms 7.5 A rms 15.4 A rms
Maximum
Instantaneous Peak
Inrush<15 A peak<15 A peak<15 A peak
6.2 A rms 5.6 A rms 11.2 A rms
25 A peak 23 A peak 45 A peak
The minimum electrical service amperage required by a
loudspeaker system is the sum of the maximum long-term
continuous current for all loudspeakers. An additional
30 percent above the combined Maximum Long-Term
Continuous amperages is recommended to prevent peak
voltage drops at the service entry.
LYON CURRENT REQUIREMENTS
Current draw for loudspeakers is dynamic and fluctuates as
operating levels change. Because different cables and circuit
breakers heat up at varying rates, it is important to understand
the following types of current ratings and how they affect
circuit breaker and cable specifications.
•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 the size and gauge of the cables conform to
electrical code standards. The current rating is also used
to select appropriately rated, slow-reacting thermal
breakers, which are recommended for loudspeaker
power distribution.
•Burst Current — The maximum rms current during a
period of around 1 second. The burst current is used as
a rating for magnetic breakers. It is also used for calcu-
lating the peak voltage drop in long AC cable runs
according to the following formula:
NOTE: For best performance, the AC cable volt-
age drop should not exceed 10 V (10percent at
115 V and 5 percent at 230 V). This ensures that the
AC voltage variations from the service entry—or peak
voltage drops due to longer cable runs—do not cause
the amplifier to cycle on and off.
DO NOT RESET CIRCUIT BREAKERS!
CAUTION: In the unlikely event that one of
LYON’s circuit breakers trips (the center button
disengages), disconnect the AC power cable and
contact Meyer Sound for repair information. DO NOT
attempt to reset the breaker or reconnect the AC
power cable.
INTELLIGENT AC POWER SUPPLY
LYON’s Intelligent AC™ power supply automatically selects
the correct operating voltage (allowing the loudspeaker to be
used internationally without manually setting voltage
switches), eliminates high inrush currents with soft-start
power up, suppresses high-voltage transients up to several
kilovolts, filters common mode and differential mode radio
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LYON OPERATING INSTRUCTIONS
frequencies (EMI), and sustains operation temporarily during
low-voltage periods.
Powering on LYON
When powering on LYON, the following startup events take
place over several seconds.
1.Audio output is muted.
2.Voltage is detected and the power supply mode is auto-
matically adjusted as necessary.
3.The primary fan turns on.
4.The power supply ramps up.
5.On the user panel, the Active/Status LED flashes multiple
colors successively.
6.The Active/Status LED turns solid green, indicating the
loudspeaker is already unmuted and ready to output
audio.
CAUTION: If the Active/Status LED does not
turn solid green, or LYON does not output
audio after 10 seconds, remove AC power
immediately and verify that the voltage is within the
required range. If the problem persists, contact
Meyer Sound Technical Support.
power cable (and audio cables). Do not use the cable
rings for any other purpose.
ELECTRICAL SAFETY GUIDELINES
Make sure to observe the following important electrical and
safety guidelines.
•The powerCON 32 connector should not be engaged or
disengaged when under load or energized. Either de-
energize or disconnect the other end of the cable.
•LYON requires a grounded outlet. Always use a
grounded outlet and plug.
•Do not use a ground-lifting adapter or cut the AC cable
ground pin.
•Make sure the AC power cable for the loudspeaker has the
appropriate power plug (on the other end) for the area in
which you will operate the loudspeaker.
•Do not operate the loudspeaker if the power cable is
frayed or broken.
•Keep all liquids away from LYON loudspeakers to avoid
hazards from electrical shock.
•Use the cable rings (see “Cable Rings” on page 16) on
the rear of the LYON cabinet to reduce strain on the AC
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