OPERATING INSTRUCTIONS
Acheron® Designer Screen Channel Loudspeaker
Keep these important operating instructions.
Download from Www.Somanuals.com. All Manuals Search And Download.
SYMBOLS USED
These symbols indicate important safety or operating features in this booklet and on the chassis:
!
Dangerous voltages: risk of
electric shock
Important operating instructions
Frame or chassis
Masse, châssis
Protective earth ground
Terre de protection
Masse Schutzleiter
Tierra proteccionista
Pour indiquer les risques
résultant de tensions dangereuses
Pour indequer important
instructions
Wichtige Betriebsanweisung oder
Gebrauchsanleitung
Warnung vor gefährlicher
elektrischer Spannung
Rahmen oder Gehäuse
Armadura o chassis
Para indicar voltajes peligrosos
Instrucciones importantes de
funcionamiento y/o manteniento
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
11.Only use attachments/accessories specified by Meyer
Sound.
12.If applicable, use only with the caster rails or rigging
specified by Meyer Sound, or sold with the loudspeaker.
Handles are for carrying only.
4. Follow all instructions.
5. Do not use this loudspeaker near water.
6. Clean only with dry cloth.
CAUTION: Rigging should only be done by
experienced professionals.
!
7. Do not block any ventilation openings. Install in accor-
dance with Meyer Sound’s installation instructions.
13.Unplug this loudspeaker during lightning storms or when
unused for long periods of time.
8. Do not install near any heat sources such as radiators,
heat registers, stoves, or other apparatus that produce
heat.
14.Disconnect the mains plug before disconnecting the
power cord from the loudspeaker.
15.Refer all servicing to qualified service personnel. Servic-
ing 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 loud-
speaker does not operate normally.
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 loudspeaker. The AC
mains plug or appliance coupler shall remain readily
accessible for operation.
CAUTION: To reduce the risk of electric shock,
do not expose this loudspeaker to rain or mois-
!
ture. Do not install the loudspeaker in wet or humid
locations without using weather protection equip-
ment from Meyer Sound.
iii
Download from Www.Somanuals.com. All Manuals Search And Download.
SAFETY SUMMARY
English
Ne pas installer l’haut-parleur dans un
endroit où il y a de l’eau ou une
humidité excessive.
Um ein Überhitzen dem Lautsprecher
zu verhindern, das Gerät vor direkter
Sonneneinstrahlung fernhalten und
nicht in der Nähe von wärmeabstrahlen-
den
To reduce the risk of electric shock, dis-
connect the loudspeaker from the AC
mains before installing audio cable.
Reconnect the power cord only after
making all signal connections.
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.
Haushaltsgeräten (z.B. Heizgerät oder
Herd) aufstellen.
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.
Im Inneren diesem Lautsprecher herr-
schen potentiell gefährliche Spannun-
gen. Nicht versuchen, das Gerät zu öff-
nen. Es enthält keine vom Benutzer
reparierbaren Teile. Reparaturen dürfen
nur von ausgebildetem Kundenienst-
personal durchgeführt werden.
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 radia-
teurs 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 répa-
rations doivent être effectuées par du
personnel qualifié et agréé par le con-
structeur.
Do not install the loudspeaker in wet or
humid locations without using weather
protection equipment from Meyer
Sound.
Español
Para reducir el riesgo de descarga eléc-
Do not allow water or any foreign object
to get inside the loudspeaker. Do not
put objects containing liquid on or near
the unit.
trica, desconecte de la red de voltaje el
altoparlante antes de instalar el cable
de señal de audio. Vuelva a conectar la
alimentacion de voltaje una vez efec-
tuadas todas las interconexiones de
señalizacion de audio.
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.
Deutsch
Um die Gefahr eines elektrischen
Conecte el altoparlante a un tomacorri-
ente bipolar y trifilar con neutro de
puesta a tierra. El tomacorriente debe
estar conectado a la protección de deri-
vación 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.
Schlages auf ein Minimum zu reduzie-
ren, den Lautsprecher vom Stromnetz
trennen, bevor ggf. ein Audio-Schnitt-
stellensignalkabel angeschlossen wird.
Das Netzkabel erst nach Herstellung
aller Signalverbindungen wieder ein-
stecken.
This loudspeaker contains potentially
hazardous voltages. Do not attempt to
disassemble the unit. The unit contains
no user-serviceable parts. Repairs
should be performed only by factory-
trained service personnel.
Der Lautsprecher an eine geerdete
zweipolige Dreiphasen-Netzsteckdose
anschließen. Die Steckdose muß mit
einem geeigneten Abzweigschutz
(Sicherung oder Leistungsschalter) ver-
bunden sein. Der Anschluß der unter-
brechungsfreien Stromversorgung an
einen anderen Steckdosentyp kann zu
Stromschlägen führen und gegen die
örtlichen Vorschriften verstoßen.
No instale el altoparlante en lugares
donde haya agua o humedad excesiva.
Français
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.
Pour réduire le risque d’électrocution,
débrancher la prise principale de l’haut-
parleur, avant d’installer le câble d’inter-
face allant à l’audio. Ne rebrancher le
bloc d’alimentation qu’après avoir
effectué toutes les connections.
Para reducir el riesgo de sobrecalenta-
miento, no exponga la unidad a los
rayos directos del sol ni la instale cerca
de artefactos que emiten calor, como
estufas o cocinas.
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 régle-
mentation locale concernant les instal-
lations électriques.
Der Lautsprecher nicht an einem Ort
aufstellen, an dem sie mit Wasser oder
übermäßig hoher Luftfeuchtigkeit in
Berührung kommen könnte.
Este altoparlante contiene niveles de
voltaje peligrosos en potencia. No
intente desarmar la unidad, pues no
contiene piezas que puedan ser repar-
das por el usuario. Las reparaciones
deben efectuarse únicamente por parte
del personal de mantenimiento capac-
itado en la fábrica.
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.
iv
Download from Www.Somanuals.com. All Manuals Search And Download.
CONTENTS
v
Download from Www.Somanuals.com. All Manuals Search And Download.
CONTENTS
vi
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 1: INTRODUCTION
HOW TO USE THIS MANUAL
ACHERON DESIGNER SCREEN CHANNEL
LOUDSPEAKER
Make sure to read these operating instructions in their
entirety before configuring a loudspeaker system with
Acheron Designer loudspeakers. In particular, pay close
attention to material related to safety issues.
At the heart of Meyer Sound's EXP line of cinema products
are the Acheron® high-performance screen channel loud-
speakers. The Acheron Designer is the most compact of the
Acheron models, making it an excellent choice for sound
design suites, screening rooms, private theatres, and small
commercial theatres. Optimized for installation behind per-
forated screens, the Acheron Designer combines the advan-
tages of self-powered technology and innovative horn
design to deliver exceptional, precise coverage for the left,
center, and right screen channels for cinema.
As you read these operating instructions, you will encounter
the following icons for notes, tips, and cautions:
NOTE: A note identifies an important or useful
piece of information relating to the topic under
discussion.
TIP: A tip offers a helpful tip relevant to the topic
at hand.
CAUTION: A caution gives notice that an
action may have serious consequences and
!
could cause harm to equipment or personnel, and
could cause delays or other problems.
Information and specifications are subject to change.
Updates and supplementary information are available at
Meyer Sound Technical Support is available at:
■
■
■
■
Tel: +1 510 486.1166
Tel: +1 510 486.0657 (after hours support)
Email: [email protected]
Acheron Designer (without Optional Grille Frame)
The Acheron Designer uses the same patent-pending horn
technology and high-frequency compression driver as the
other Acheron models, delivering the same 38 Hz to 17 kHz
frequency response. This consistency of fidelity between
Acheron models ensures that soundtracks monitored with
the Acheron Designer translate accurately when played
back in larger rooms with the Acheron 100, Acheron 80,
Acheron Studio, or other calibrated cinema system.
7
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 1: INTRODUCTION
Designed specifically for cinema, the Acheron horn features
a very soft roll-off beyond its 80-degree horizontal by 50-
degree vertical coverage pattern. The extremely well-
behaved horn ensures an accurate acoustic crossover and
consistent vertical coverage pattern through the critical
crossover range between the low- and high-frequency driv-
ers. The optimized crossover point places most of the dialog
in the horn, which is ideal for cinema applications.
The Acheron Designer enclosure is constructed of premium
birch plywood and coated with a low-gloss, black-textured
finish. The cabinet bottom is fitted with two threaded M6
attachment points for the optional MYA-DES cradle-style
yoke, allowing the unit to be suspended from a single hang-
ing point.
Designed and manufactured at Meyer Sound's headquar-
ters in Berkeley, California, the Acheron Designer’s drivers
include one 12-inch low-frequency cone driver, housed in an
optimally tuned, ported enclosure, and one high-frequency
4-inch diaphragm compression driver. The drivers yield
uncompromising quality and are powered by sophisticated
onboard amplification. The self-powered design ensures
consistent results and simplifies installations in both new
and existing rooms.
Acheron Designer with Optional MYA-DES Cradle-Style Yoke
An optional, black cloth grille frame update kit is available
for installations where the Acheron Designer is not placed
behind a screen.
Acheron Designer with Recessed Heat Sink
A proprietary two-channel, Class-D amplifier powers each
driver channel independently. Onboard processing includes
driver protection circuitry, an electronic crossover, and cor-
rection filters, ensuring flat frequency and phase responses.
The rear-mounted, recessed heat sink yields efficient con-
vection cooling, and allows the unit to be placed flat against
walls, when necessary.
The optional RMS™ remote monitoring system provides
comprehensive monitoring of system parameters on a
Windows®-based computer.
Acheron Designer with Optional Grille Frame
8
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 2: POWER REQUIREMENTS
The Acheron Designer 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 the Acheron Designer.
AC Loop Output Connector (Gray)
The gray AC Loop Output connector allows multiple
Acheron Designers to be looped and powered from a single
power source. Connect the AC Loop Output of the first
Acheron Designer to the AC Input of the second unit, and so
forth. The AC Loop Output uses a PowerCon3 AC mains lock-
ing connector that prevents accidental disconnections.
AC CONNECTORS
The Acheron Designer user panel includes 3-pole, Power-
Con AC connectors.
The maximum number of loudspeakers that can be looped
from the Loop Output connector is determined by the volt-
age of the power source, the current draw of the looped
loudspeakers, the circuit breaker rating, and the rating of the
AC power cable connected to Acheron Designer.
DO NOT
DISCONNECT
UNDER LOAD
COMMERCIAL
Table 1: Maximum Number of Acheron Designers that Can Be
Looped with AC Power
AUDIO SYSTEM
AC INPUT
RATING
100-240V~
50-60 Hz
4A MAX
AC LOOP
OUTPUT
3JKB
100-240V~
50-60 Hz
8A MAX
Class 1 Wiring
Circuit Breaker/
115 V AC
230 V AC
100 V AC
Made in USA with domestic and foreign parts
Connector Rating
15 amps
20 amps
3 looped
(4 total)
7 looped
(8 total)
2 looped
(3 total)
AC Input (Left) and AC Loop Output (Right) Connectors
5 looped
(6 total)
10 looped
(11 total)
3 looped
(4 total)
AC Input Connector (Blue)
The blue AC Input connector supplies power to the
Acheron Designer loudspeaker. The connector is rated at
20 amps and uses a PowerCon3 AC mains locking connec-
tor that prevents accidental disconnections. A 10-foot AC
power cable, rated at 15 amps, is included with each
Acheron Designer. If you replace the included AC power
cable, make sure to use a cable with the appropriate power
plug (on the other end) for the region in which you will oper-
ate the unit.
NOTE: The Acheron Designer current draw is
dynamic and fluctuates as operating levels
change. The numbers in Table 1 assume that operat-
ing levels are normal and not such that the loud-
speakers are constantly limiting.
Each Acheron Designer ships with one AC looping connec-
tor for making AC looping cables. Assembled AC looping
cables are available from Meyer Sound.
The AC Input connector also supplies power to any addi-
tional loudspeakers connected to the Acheron Designer’s
gray Loop Output connector. Each Acheron Designer loud-
speaker requires approximately 3.24 A rms maximum at
115 V AC and 1.74 A rms maximum at 230 V AC for proper
operation.
CAUTION: Do not exceed the current capabil-
ity of the 20-amp Input connector for the
!
Acheron Designer. When looping loudspeakers, con-
sider the total current draw for all loudspeakers on
the circuit, including the first loudspeaker.
CAUTION: When using the included AC power
cable, do not loop more than three additional
!
Acheron Designers from the AC Loop Output con-
nector at 115 V (four total for the circuit), and not
more than seven at 230 V (eight total for the circuit).
9
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 2: POWER REQUIREMENTS
WIRING FOR AC CONNECTIONS
AC POWER DISTRIBUTION
The Acheron Designer requires a grounded outlet. To oper-
ate safely and effectively, it is extremely important that the
entire system be properly grounded.
All components in an audio system (self-powered loud-
speakers, mixing consoles, and processors) must be prop-
erly connected to an AC power distribution system to ensure
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 as the neutral and line cables.
Blue = neutral
Brown = hot
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.
Yellow/green =
earth ground
(chassis)
CAUTION: Before applying AC power to any
!
Meyer Sound self-powered loudspeaker, make
AC Cable Wiring Scheme
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.
When wiring international or special-purpose AC power
cables and connectors, use the following wiring scheme:
■
■
■
Connect the blue wire to the black terminal, or the termi-
nal marked with an N.
Figure 1 illustrates a basic three-phase AC distribution sys-
tem with the loudspeaker load distributed across the three
phases. All loudspeakers are connected to common neutral
and earth-ground lines.
Connect the brown wire to the red terminal, or the termi-
nal marked with an L.
Connect the yellow and green wire to the green (or green
and yellow) terminal, or the terminal marked with an E.
CAUTION: When creating AC power cables
and distribution systems, it is important to pre-
!
serve AC line polarity and connect the earth ground
on both ends of the cable. The Acheron Designer
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.
Line 1
Line 2
Line 3
Neutral
Earth Ground
Figure 1: AC Power Distribution System
10
Download from Www.Somanuals.com. All Manuals Search And Download.
ACHERON DESIGNER OPERATING INSTRUCTIONS
ACHERON DESIGNER VOLTAGE
REQUIREMENTS
The Acheron Designer operates safely and continuously
when the AC voltage stays within 100–264 V AC at 50 or
60 Hz. The loudspeaker can withstand continuous voltages
up to 275 volts and allows any combination of voltage to
GND (neutral-line-ground or line-line-ground).
POWERING UP THE ACHERON DESIGNER
When AC power is applied to the Acheron Designer, its
Intelligent AC™ power supply automatically selects the cor-
rect operating voltage, allowing it to be used internationally
without manually setting voltage switches. In addition,
Intelligent AC provides soft-start power up, eliminating high
inrush currents; suppresses high-voltage transients up to
several kilovolts; filters common mode and differential mode
radio frequencies (EMI); and sustains operation temporarily
during low-voltage periods.
If the voltage drops below 90 V (brownout), the unit uses
stored power to continue operating temporarily; the loud-
speaker shuts down if the voltage does not rise above the
low boundary before the stored power is used.
When powering up the Acheron Designer, the following
startup events take place over several seconds.
If the voltage rises above 275 V, the power supply immedi-
ately shuts off to prevent damage to the unit.
1. Audio output is muted.
If the Acheron Designer shuts down due to either low or high
voltage, its power supply automatically powers up again
after three seconds, so long as the voltage has returned to
its normal operating window. If the Acheron Designer does
not power up after 10 seconds, remove AC power immedi-
ately and contact Meyer Sound Technical Support.
2. Voltage is detected and the power supply mode is auto-
matically adjusted as necessary. The power supply
ramps up.
3. During the power up sequence, the three-color On/Sta-
tus LED flashes all three colors.
4. After the power up sequence and system check have
completed, the ON/Status LED turns solid green, indicat-
ing the loudspeaker is ready to reproduce audio.
CAUTION: The power source for the
Acheron Designer should always operate
!
within the required voltage range, at least a few volts
from the upper and lower ranges. 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.
CAUTION: If the On/Status LED does not turn
green, or the Acheron Designer does not out-
put audio after ten seconds, remove AC power imme-
diately and verify that the voltage is within the
required range. If the problem persists, contact
Meyer Sound Technical Support.
!
NOTE: When voltage fluctuates within the
Acheron Designer’s operating range, automatic
tap selection stabilizes the operating voltage. This
tap selection is instantaneous with no audible arti-
facts.
ACHERON DESIGNER CURRENT
REQUIREMENTS
The Acheron Designer current draw is dynamic and fluctu-
ates as operating levels change. Since different cables and
circuit breakers heat up at varying rates, it is important to
understand the following types of current ratings and how
they affect circuit breaker and cable specifications.
TIP: Since the Acheron Designer does not
require a dedicated neutral line, and it can toler-
ate elevated voltages from the ground line, it can be
connected to line-line terminals in 120 V, 3-phase
Wye systems. This results in 208 V AC between lines
(nominal) and therefore draws less current than when
using 120 V AC (line-neutral). Make sure that the volt-
age remains within the Acheron Designer’s recom-
mended operating window (100-264 V AC). The
ground line must always be used for safety reasons
and the line-to-ground voltage should never exceed
264 V AC (typically 120 V AC from line-to-ground).
■
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 sec-
onds. The Maximum Long-Term Continuous Current is
used to calculate temperature increases for cables, to
ensure that cable sizes and gauges conform to electrical
code standards. The current rating is also used as a rat-
ing for slow-reacting thermal breakers.
11
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 2: POWER REQUIREMENTS
■
Burst Current — The maximum rms current during a
period of around one second. The Burst Current is used
as a rating for magnetic breakers. It is also used for cal-
culating the peak voltage drop in long AC cable runs
according to the following formula:
ELECTRICAL SAFETY GUIDELINES
Pay close attention to these important electrical and safety
guidelines.
■
The Acheron Designer requires a grounded outlet.
Always use a grounded outlet and plug.
V pk (drop) = I pk x R (cable total)
The Burst Current can also be used to calculate the AC
looping capability of Acheron Designer.
■
■
Ultimate Short-Term Peak Current — A rating for fast-
reacting magnetic breakers.
Inrush Current — The spike of initial current encoun-
tered when powering on.
gauges and circuit breaker ratings for the system’s operat-
ing voltage.
■
Do not use a ground-lifting adapter or cut the AC cable
ground pin.
Table 2: Acheron Designer Current Draw
Current Draw
115 V AC
0.23 A rms
1.58 A rms
230 V AC
0.19 A rms
0.83 A rms
100 V AC
0.24 A rms
1.78 A rms
Idle Current
Maximum Long-Term
Continuous Current
Earth ground
Burst Current
3.1 A rms
1.4 A rms
3.6 A rms
Ultimate Short-Term
Peak Current
12.0 A peak
8.0 A peak
12.4 A peak
Inrush Current
25 A peak
54 A peak
20 A peak
Chassis ground
The minimum electrical service amperage required by an
Acheron Designer loudspeaker system is the sum of the
Maximum Long-Term Continuous Current for each loud-
speaker. An additional 30 percent above the minimum
amperage is recommended to prevent peak voltage drops at
the service entry.
■
■
Do not exceed the current capability of the 20-amp AC
Input connector for the loudspeaker. When looping loud-
speakers, consider the total current draw for all loud-
speakers on the circuit, including the first loudspeaker.
NOTE: For best performance, the AC cable
voltage drop should not exceed 10 V, or
10 percent at 115 V and 5 percent at 230 V. Make
sure that even with AC voltage drops that the AC
voltage always remains within the operating win-
dows.
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. In addi-
tion, the AC power cable must be rated for the total cur-
rent draw of all loudspeakers looped from the power
source.
■
■
Do not operate the unit if its power cable is frayed or bro-
ken.
Keep all liquids away from the Acheron Designer to avoid
hazards from electrical shock.
12
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 3: AMPLIFICATION AND AUDIO
The Acheron Designer’s low- and high-frequency drivers are
AUDIO CONNECTORS
powered by an extremely efficient onboard two-channel,
Class-D amplifier that uses minimal AC power when idle.
Internal signal processing includes a complex crossover, fre-
quency and phase correction, and limiters that prevent
driver overexcursion and regulate voice coil temperatures,
ensuring maximum driver lifespan.
The Acheron Designer includes female XLR Input and male
XLR Loop output connectors.
Input
Limit
Loop
Looping Audio Input
10k Balanced
2
3
1
Input
Limit
Loop
Looping Audio Input
10k Balanced
On / Status
GND Circuit
1k
2
3
1
AVIS
RISQUE DE CHOC
ELECTRIQUE
Earth/Chassis
NE PAS OUVRIR
On / Status
GND Circuit
1k
CAUTION
RISK OF
ELECTRIC SHOCK
DO NOT OPEN
Acheron Designer Audio Connectors, Input and Loop Output
Earth/Chassis
Input Connector
NID: 001848623900
RMS Network
The female XLR Input connector accepts a balanced audio
signal with an input impedance of 10 kOhm. The connector
uses the following wiring:
Remote Mute
Disable Enable
Identify
RMS 4.0
Firmware
Wink
Activity
■
Pin 1 — 1 kOhm to chassis and earth ground (ESD
clamped)
DO NOT
DISCONNECT
UNDER LOAD
COMMERCIAL
AUDIO SYSTEM
AC INPUT
RATING
AC LOOP
OUTPUT
3JKB
■
■
■
Pin 2 — Signal (+)
100-240V~
50-60 Hz
4A MAX
100-240V~
50-60 Hz
8A MAX
Class 1 Wiring
Pin 3 — Signal (–)
Made in USA with domestic and foreign parts
Case — Earth (AC) ground and chassis
Acheron Designer Rear Panel with Optional RMS Module
Pins 2 and 3 carry the input as a differential signal. Pin 1 is
connected to earth through a 1 kOhm, 1000 pF, 15 V
clamped network. This circuitry provides virtual ground lift
for audio frequencies while allowing unwanted signals to
bleed to ground. Make sure to use standard, balanced XLR
audio cables with all three pins connected on both ends.
Telescopic grounding is not recommended, and shorting an
input connector pin to the case may cause a ground loop,
resulting in hum.
The Acheron Designer rear panel includes a slot for the
optional RMS module, used for connecting to the RMS
TIP: If unwanted noise or hiss is produced by
the loudspeaker, disconnect its input cable. If
the noise stops, there is most likely nothing wrong
with the loudspeaker. To locate the source of the
noise, check the audio cable, source audio, and AC
power.
13
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 3: AMPLIFICATION AND AUDIO
Loop Output Connector
LIMITING
The male XLR Loop output connector allows multiple
Acheron Designers to be looped from a single audio source.
For applications that require multiple Acheron Designers,
connect the Loop output of the first unit to the Input of the
second, and so forth.
When source levels for the Acheron Designer exceed opti-
mum input levels for its drivers, limiting is engaged and is
indicated by the two Limit LEDs on the rear panel. The bot-
tom LED indicates limiting for the low-frequency channel.
The top LED indicates limiting for the high-frequency chan-
nel. When engaged, limiting not only protects the drivers,
but also prevents signal peaks from causing excessive dis-
tortion in the amplifier’s channels, thereby preserving head-
room and maintaining smooth frequency responses at high
levels. When source levels return to normal, below the lim-
iter’s threshold, limiting ceases.
NOTE: The order in which loudspeakers are
connected when looping audio signals is unim-
portant. The Loop connector is wired in parallel to the
Input connector and transmits the unbuffered source
signal even when the Acheron Designer is powered
off.
High-frequency limiter (top LED)
Low-frequency limiter (bottom LED)
To avoid distortion whenlooping multipleAcheron Designers,
make sure the source device can drive the total load imped-
ance of the looped loudspeakers. In addition, the source
device must be capable of delivering approximately 20 dBV
(10 V rms into 600 ohms) to yield the maximum peak SPL
over the entire operating bandwidth of the loudspeakers.
Most professional audio equipment can transmit these
source levels.
Input
Limit
AVIS
RISQUE DE CHOC
ELECTRIQUE
NE PAS OUVRIR
CAUTION
On / Status
RISK OF
ELECTRIC SHOCK
DO NOT OPEN
To calculate the load impedance for the looped loudspeak-
ers, divide 10 kOhms (the input impedance for a single
Acheron Designer) by the number of looped loudspeakers.
For example, the load impedance for 10 Acheron Designer
loudspeakers is 1000 ohms (10 kOhms / 10). To drive this
number of looped loudspeakers, the source device should
have an output impedance of 100 ohms or less. This same
rule applies when looping Acheron Designer loudspeakers
with other self-powered Meyer Sound loudspeakers and
subwoofers.
Limit LEDs
The Acheron Designer performs within its acoustical specifi-
cations at normal temperatures when the Limit LEDs are
unlit, or if the LEDs are lit for two seconds or less and then
turn off for at least one second. If an LED remains lit for lon-
ger than three seconds, the loudspeaker enters hard limiting
where:
■
■
Increases to the input level have no effect.
NOTE: Most source devices are capable of
driving loads no smaller than 10 times their
output impedance.
Distortion increases due to clipping and nonlinear driver
operation.
■
The drivers are subjected to excessive heat and excur-
sion, which will compromise their life span and may
eventually lead to damage over time.
CAUTION: Make sure that all cabling for
looped loudspeakers is wired correctly (Pin 1
!
to Pin 1, Pin 2 to Pin 2, and so forth) to prevent the
polarity from being reversed. If one or more loud-
speakers in a system have reversed polarity, fre-
quency response and coverage will be significantly
degraded.
NOTE: The Acheron Designer uses digital limit-
ers that add no noise and have no effect on the
signal when the limiters are not engaged and the
Limit LEDs are not lit.
14
Download from Www.Somanuals.com. All Manuals Search And Download.
ACHERON DESIGNER OPERATING INSTRUCTIONS
ON/STATUS LED
Heat Sink Ventilation Requirements
During normal operation, the Acheron Designer’s On/Status
LED is green. If the loudspeaker’s internal temperature
reaches 75° C (167° F), the LED turns solid yellow and the
loudspeaker’s gain is reduced by 3 dB. Though the
Acheron Designer will continue to operate normally with the
lower gain, when the On/Status LED is yellow, this is an indi-
cation that the loudspeaker is reaching its maximum heat
dissipation and a reduction in SPL is recommended. When
the loudspeaker’s internal temperature cools to 60° C
(140° F), the amplifier returns to normal operation.
When installing the Acheron Designer flush against walls, or
when mounting them in soffits or baffle walls, make sure to
allow plenty of ventilation above the loudspeaker.
■
When installing the Acheron Designer in a soffit with the
loudspeaker flush against the back of the soffit (see
Figure 2), allow at least 6 inches above the loudspeaker
for ventilation.
CAUTION: If the loudspeaker’s internal tem-
perature reaches 125° C (257° F), gain is
!
reduced by 6 dB to avoid damage to the loud-
speaker.
TIP: When the Acheron Designer is connected
to an RMS network, the RMS software provides
additional feedback on the loudspeaker’s operating
temperature. For more information, see Chapter 6,
“RMS Remote Monitoring System.”
6.00
[152 mm]
Amplifier Cooling System
The Acheron Designer’s amplifier relies solely on natural
convection for cooling from air flowing over its heat sink.
The rear-mounted, recessed heat sink yields efficient cool-
ing and allows the unit to be placed flat against walls, when
necessary. The amplifier and heat sink keep temperatures
low, even when the unit is used at high ambient tempera-
tures, and when driven continuously at high output levels.
CAUTION: The Acheron Designer’s heat sink
can reach temperatures of up to 85° C (185° F)
!
during extreme operation. Use extreme caution when
approaching the rear of the loudspeaker.
Figure 2: Acheron Designer Mounted in Soffit, Flush Against Back
of Soffit with 6” of Ventilation Above Loudspeaker
15
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 3: AMPLIFICATION AND AUDIO
■
When installing the Acheron Designer in a soffit with the
loudspeaker 1 inch from the back of the soffit (see
Figure 3), allow at least 3 inches above the loudspeaker
for ventilation.
■
When installing the Acheron Designer in a baffle wall with
no opening in the front of the wall for ventilation (see
Figure 4), allow for plenty of ventilation above the loud-
speaker within the baffle wall.
3.00
[76 mm]
1.00
[25 mm]
Figure 4: Acheron Designer Mounted in Baffle Wall with Open
Ventilation Above Loudspeaker
Figure 3: Acheron Designer Mounted in Soffit, 1” Behind and 3”
Above Loudspeaker for Ventilation
16
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 4: RIGGING
The yoke’s cradle can be pivoted to install the loudspeaker
with downtilt or uptilt. A “C” or “G” hanging clamp and steel
safety cable (not included) are required to suspend the yoke.
Important Safety Considerations!
When installing Meyer Sound loudspeakers and subwoof-
ers, the following precautions should always be observed:
■
All Meyer Sound products must be used in accordance
with local, state, federal, and industry regulations. It is
the owner’s and user’s responsibility to evaluate the reli-
ability of any mounting and rigging method for their
application. Mounting and rigging should only be carried
out by experienced professionals.
■
■
Use mounting and rigging hardware that has been rated
to meet or exceed the weight being hung.
Make sure to attach mounting hardware to the building's
structural components (studs or joists), and not just to
the wall surface. Verify that the building's structure and
the anchors used for the installation will safely support
the total weight of the mounted loudspeakers.
■
■
Use mounting hardware appropriate for the surface
where the loudspeaker will be installed.
Make sure bolts and eyebolts are tightened securely.
Meyer Sound recommends using Loctite® on eyebolt
threads and safety cables.
■
Inspect mounting and rigging hardware regularly. Imme-
diately replace any worn or damaged components.
MYA-DES CRADLE-STYLE YOKE
The Acheron Designer includes M6 threaded attachment
points on the cabinet bottom for the optional MYA-DES cra-
dle-style yoke, allowing the unit to be suspended from a sin-
gle hanging point.
MYA-DES Cradle-Style Yoke, Bottom View
CAUTION: The MYA-DES mounting yoke is
!
rated for a maximum downtilt of 45 degrees.
NOTE: The top bar of the MYA-DES yoke
accommodates hanging clamps with standard
1/2- inch or 12 mm bolts.
NOTE: For Acheron Designer dimensions and
weight with the MYA-DES yoke, refer to
M6 threaded
attachment
points
Acheron Designer Cabinet Bottom, M6 Threaded Attachment Points
17
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 4: RIGGING
18
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 5: RMS REMOTE MONITORING SYSTEM
The Acheron Designer is optionally available with the RMS
remote monitoring system module, allowing it to be con-
RMS SOFTWARE
The optional RMS software provides extensive system sta-
nected to an RMS network. RMS allows real-time monitor-
ing of multiple Meyer Sound self-powered loudspeakers
from a Windows-based computer. The RMS host computer
communicates with Meyer Sound loudspeakers (equipped
with RMS modules) via a simple twisted pair network, or an
Ethernet network using an FT-10 to Ethernet adapter.
tus and performance data for each loudspeaker, including
amplifier voltage, limiting activity, power output, driver sta-
tus, as well as mute and solo capability. Loudspeakers are
added to the RMS network and assigned a node name dur-
ing a one-time commissioning procedure where the loud-
speaker is identified by either entering its unique Neuron ID,
or by pressing its Identify button.
NOTE: For the latest RMS system require-
NOTE: The RMS software allows you to dis-
able Mute and Solo functions to eliminate any
possibility of accidentally muting loudspeakers. Mute
and solo capability can also be disabled by removing
the Mute Jumper from RMS modules. For more infor-
mation, refer to the RMS User Guide.
NOTE: RMS does not control AC power.
RMS Add Loudspeaker Dialog Box
Once loudspeakers are identified on the RMS network, they
appear in the RMS software as icons and views; they are
also automatically added to the RMS database on the host
computer.
Acheron Designer RMS Icons
19
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 5: RMS REMOTE MONITORING SYSTEM
RMS software displays all loudspeakers on the network in a
panel with icons, Meter views, and Text views that can be
customized to suit your needs. Loudspeaker data is
updated 2–5 times per second. Individual loudspeakers can
be physically identified with the Wink option in RMS, which
lights the Wink LED on the RMS module for that particular
loudspeaker. Conversely, a loudspeaker can be identified in
the RMS software by pressing the Identify button on the
loudspeaker’s RMS module.
RMS MODULE
The Acheron Designer RMS module includes an Identify
button, Wink/Activity LED, Remote Mute switch, and two
Network connectors.
Figure 5: Acheron Designer RMS Module
NOTE: The buttons and LED on the
Acheron Designer RMS module are used
exclusively by RMS and have no effect on the acous-
tical or electrical activity of the loudspeaker.
Identify Button
The Identify button serves the following functions:
■
If the loudspeaker has not yet been commissioned
(Wink/Activity LED not lit), press the Identify button to
identify the loudspeaker on the RMS network and com-
mission it.
RMS Panel with Icons
Loudspeaker icons and views can be arranged to represent
how loudspeakers have been deployed in the system. Multi-
ple panels can be saved and recalled for specific perfor-
mances and venues.
■
■
To decommission the loudspeaker, press and hold the
Identify button during startup (see “Resetting the RMS
To wink a commissioned loudspeaker, press the Identify
button. The Wink LED on the loudspeaker icon in the
RMS software lights up and the Wink/Activity LED on the
loudspeaker’s RMS user panel turns solid green. Press
the Identify button again to unwink the loudspeaker.
NOTE: When the Acheron Designer heat sink
reaches 85° C (185° F), the On/Status LED
turns red, while its loudspeaker icon in the RMS soft-
ware turns yellow — indicating the loudspeaker is
running hot, but still within safe operating limits.
Make sure that the loudspeaker is properly ventilated.
TIP: The Wink function is useful for identifying
the physical loudspeaker corresponding to a
loudspeaker icon in the RMS software.
20
Download from Www.Somanuals.com. All Manuals Search And Download.
ACHERON DESIGNER OPERATING INSTRUCTIONS
Wink/Activity LED (Green)
RMS Network Connectors
The green Wink/Activity LED indicates the status of the
loudspeaker:
The two Weidmuller connectors transfer data to and from
the RMS network. Two connectors are provided to allow for
easy connection of multiple (daisy-chained) loudspeakers
on the network. Included with each RMS-equipped loud-
speaker are RMS cable connectors and mounting blocks for
constructing RMS cables. The RMS blocks allow the cables
to be securely attached to the RMS module with screws.
■
■
During startup, the LED blinks 10 times.
If the loudspeaker has not yet been commissioned, the
LED is not lit after startup.
■
■
If the loudspeaker has been successfully commissioned,
the LED flashes continuously and flashes more rapidly
with increased data activity.
NEURON ID FOR THE RMS MODULE
When the loudspeaker is winked, either by clicking the
Wink button in the RMS software or by pressing the
Identify button on the RMS user panel, the LED is solid
green.
Each Acheron Designer RMS module has a unique 12-char-
acter Neuron ID (NID) that identifies the loudspeaker on the
network. When commissioning the loudspeaker, the NID
must either by entered manually or retrieved from the loud-
speaker by pressing its Identify button. The NID for the RMS
module is located on the user panel above the orange RMS
TIP: The Wink function is useful for identifying
the physical loudspeaker corresponding to a
loudspeaker icon in the RMS software.
RESETTING THE RMS MODULE
Remote Mute Switch
You can use the Identify button to reset the Acheron Designer
RMS module when powering up the loudspeaker. This will
cause the module to be decommissioned from the network.
The recessed Remote Mute switch on the Acheron Designer
RMS module determines whether the RMS software can
control muting and soloing of the loudspeaker. The
Acheron Designer ships from the factory with the switch
enabled.
To reset the Acheron Designer RMS module:
1. Disconnect the loudspeaker’s power cord.
2. Press and hold the Identify button.
3. While continuing to hold down the Identify button, recon-
nect the power cord.
4. After the Wink/Activity LED blinks on and off, release the
Identify button. The RMS module is reset and the loud-
speaker is decommissioned.
Remote Mute Switch
■
Disable: When the Remote Mute switch is set to Disable
(to the left), the loudspeaker cannot be muted and
soloed from the RMS software.
■
Enable: When the Remote Mute switch is set to Enable
(to the right), the loudspeaker can be muted and soloed
from the RMS software.
NOTE: The RMS software also allows you to
disable Mute and Solo functions to eliminate
any possibility of accidentally muting loudspeakers.
For more information, refer to the RMS User Guide.
21
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 5: RMS REMOTE MONITORING SYSTEM
22
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 6: SYSTEM DESIGN AND INTEGRATION TOOLS
Meyer Sound offers two comprehensive tools to assist with
the acoustical and functional requirements of system design
and optimization. This chapter introduces MAPP Online
Cinema, Meyer Sound’s patented online acoustical predic-
tion tool, and SIM 3, a comprehensive system for measure-
ment and analysis.
The key to the accuracy of MAPP Online Cinema’s predic-
tions is its exhaustive database of Meyer Sound loud-
speaker measurements. Performance predictions for each
loudspeaker are based on 360 1/48th-octave-band mea-
surements taken with a SIM audio analyzer in the Meyer
Sound anechoic chamber. The extraordinary consistency
between Meyer Sound loudspeakers guarantees that pre-
dictions from MAPP Online Cinema will closely match their
actual performance.
MAPP ONLINE CINEMA
MAPP Online Cinema is a powerful, cross-platform, Java-
based application for accurately predicting the coverage
pattern, frequency response, impulse response, and maxi-
mum SPL output of Meyer Sound cinema loudspeakers.
MAPP Online Cinema predictions are requested by the client
software and sent via the Internet to the high-speed Meyer
Sound servers where high-resolution (magnitude and phase)
polar data is processed with sophisticated acoustical pre-
diction algorithms. The resulting predictions are then
returned to and displayed on the local computer running the
MAPP Online Cinema client software.
Residing on your local computer, the MAPP Online Cinema
client lets you configure Meyer Sound loudspeaker systems
and define the environment in which they will operate,
including air temperature, pressure, humidity, and even the
location and composition of walls. CAD (DXF) files contain-
ing detailed venue information can also be imported.
TIP: Meyer Sound offers seminars and webinars
on using MAPP Online Cinema. For more infor-
MAPP Online Cinema Applications
With MAPP Online Cinema, you can:
■
Simulate different loudspeaker configurations to refine
system design and zero-in on the best coverage for
intended audience areas
■
■
Simulate different screen types to evaluate their trans-
parence and reflectivity
Monitor loudspeaker interactions to locate destructive
interferences so that loudspeakers can be re-aimed and
repositioned as necessary
■
Place microphones anywhere in the sound field and pre-
dict their frequency response, impulse response, and
sound pressure
MAPP Online Cinema
Sound system designers can use MAPP Online Cinema to
accurately predict the appropriate loudspeaker deployment
for each job, complete with coverage data, system delay
and equalization settings, and detailed design illustrations.
MAPP Online Cinema’s accurate, high-resolution predic-
tions ensure that systems will perform as expected, thereby
eliminating unexpected coverage problems and minimizing
on-site adjustments.
■
■
Determine delay settings for surround loudspeakers
Try out virtual Galileo equalization to determine optimum
real-world settings for the best system response
■
Generate and export system images for client presenta-
tions
23
Download from Www.Somanuals.com. All Manuals Search And Download.
CHAPTER 6: SYSTEM DESIGN AND INTEGRATION TOOLS
Using MAPP Online Cinema
Source Independent Measurement Technique
MAPP Online Cinema is compatible with the following oper-
ating systems:
The SIM 3 audio analyzer implements Meyer Sound’s source
independent measurement technique, a dual-channel
method that accommodates statistically unpredictable exci-
tation signals. Any excitation signal within a desired fre-
quency range can be used to obtain highly accurate
measurements for acoustical or electronic systems. For
example, concert halls and loudspeaker systems can be
captured during a performance and used as a SIM 3 test
signal, so you can:
■
■
■
■
Windows
Linux®
Unix®
Mac OS®
For information on which operating system versions are
■
View measurement data as amplitude versus time
(impulse response) or amplitude and phase versus fre-
quency (frequency response)
Downloading and Installing MAPP Online Cinema
■
■
Utilize a single-channel spectrum mode
To use MAPP Online Cinema, you must register online at
www.meyersound.com. After entering your registration
information, an email will be sent to you with your user
name, password, and the MAPP Online Cinema download
location. On-screen instructions will guide you through the
download and installation process.
View frequency domain data within a logarithmic fre-
quency axis
■
Determine and internally compensate for propagation
delays using the SIM 3 Delay Finder
The MAPP Online Cinema client software is regularly
upgraded to add support for the latest Meyer Sound loud-
speakers, as well as to add feature enhancements. Most
upgrades are downloaded automatically when logging on to
a MAPP Online Cinema session. The MAPP Online Cinema
database includes all Meyer Sound EXP screen channel
loudspeakers, surround loudspeakers, subwoofers, and
processors.
SIM 3 Applications
The SIM 3’s primary applications are testing and aligning
loudspeaker systems, which entails:
■
Measuring propagation delays between subsystems to
determine appropriate polarities and delay times
■
Measuring variations in frequency response caused by
the acoustical environment and the placement and inter-
action of loudspeakers to determine corrective equaliza-
tion
SIM 3 MEASUREMENT SYSTEM
The SIM 3 audio analyzer is a high-resolution audio mea-
surement system comprised of software, hardware, micro-
phones, and accessory cables. The SIM 3 is optimized for
measuring audio frequencies with resolutions up 1/48th of
an octave, allowing you to apply precise corrections to bal-
ance system response using frequency and phase domain
information.
■
■
Optimizing subwoofer integrations
Optimizing loudspeaker arrays
The SIM 3 is also versatile and accurate enough for the fol-
lowing applications:
■
■
■
■
■
■
Microphone calibration and equalization
Transducer evaluation and correction
Echo detection and analysis
Vibration analysis
Architectural acoustics
Underwater acoustics
24
Download from Www.Somanuals.com. All Manuals Search And Download.
APPENDIX A: ACHERON DESIGNER SPECIFICATIONS
ACOUSTICAL
Operating Frequency Range
37 Hz – 18 kHz
Note: Recommended maximum operating frequency range. Response depends on loading
conditions and room acoustics.
Frequency Response
38 Hz – 17 kHz 4 dB
Note: Measured free field with 1/3 octave frequency resolution at 4 meters.
Phase Response
230 Hz to 17 kHz 30°
Maximum Peak SPL
130 dB
Note: Measured free field with music referred to 1 meter.
Dynamic Range
Coverage
>110 dB
80° horizontal by 50° vertical
Crossover
680 Hz
Note: At this frequency, both transducers produce equal sound pressure levels.
TRANSDUCERS
Low Frequency
One 12” cone driver
Nominal impedance: 2
Voice coil size: 4”
High Frequency
One 4” compression driver
Nominal impedance: 8
Voice coil size: 4”
Diaphragm size: 4”
Exit size: 1.5”
AUDIO INPUT
Type
Differential, electronically balanced
Maximum Common Mode Range
Connectors
5 V DC, clamped to earth for voltage transient protection
Female XLR input with male XLR loop output
10 k differential between pins 2 and 3
Input Impedance
Wiring
Pin 1: Chassis/earth through 1 k, 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
CMRR
Differential DC blocking up to the maximum common mode voltage
>50 dB, typically 80 dB (50 Hz – 500 Hz)
RF Filter
Common mode: 425 kHz
Differential mode: 142 kHz
TIM Filter
<80 kHz, integral to signal processing
Nominal Input Sensitivity
Input Level
10 dBV (3.2 V rms, 4.5 V peak) continuous is typically the onset of limiting for noise and music
Audio source must be capable of producing +20 dBV (10 V rms, 14 V peak) into 600to pro-
duce the maximum peak SPL over the operating bandwidth of the loudspeaker
AMPLIFIER
Type
Two-channel, Class-D
25
Download from Www.Somanuals.com. All Manuals Search And Download.
APPENDIX A: ACHERON DESIGNER SPECIFICATIONS
Output Power
Total Output
700 W total (550 W low channel, 250 W high channel)
Note: Amplifier wattage rating based on the maximum unclipped burst sine-wave RMS volt-
age the amplifier will produce into the nominal load impedance: low-frequency channel, 33 V
rms into 2 ; high-frequency channel, 33 V rms into 8 .
1400 W peak
Note: Peak power output based on the maximum unclipped peak voltage the amplifier will
produce into the nominal load impedance: low-frequency channel, 46 V peak into 2 ; high-
frequency channel, 46 V peak into 8 .
THD, IM TIM
Load Capacity
Cooling
<.02%
2 low channel, 8 high channel
Convection, with recessed heat sink
AC POWER
Connectors
Voltage Selection
PowerCon with loop output
Automatic, continuous range from 90–265 V AC
100–240 V AC, 50/60 Hz
Safety Agency Rated Operating Volt-
age
Turn On/Turn Off Points
Current Draw
90 V AC on, no turn-off, only fuse-protect above 265 V AC
Idle Current
0.23 A rms (115 V AC); 0.19 A rms (230 V AC); 0.24 A rms (100 V AC)
1.58 A rms (115 V AC); 0.83 A rms (230 V AC); 1.78 A rms (100 V AC)
Maximum Long-Term Continuous
Current
Burst Current
3.1 A peak (115 V AC); 1.4 A peak (230 V AC); 3.6 A peak (100 V AC)
Note: AC power cabling must be of sufficient gauge so that under burst current rms condi-
tions, cable transmission losses do not drop below the loudspeaker’s specified operating volt-
age range.
Ultimate Short-Term Peak Current
Inrush Current
12.0 A peak (115 V AC); 8.0 A peak (230 V AC); 12.4 A peak (100 V AC)
25 A peak (115 V AC); 54 A peak (230 V AC); 20 A peak (100 V AC)
PHYSICAL
Enclosure
Premium birch plywood
Low gloss, black textured
Finish
Protective Grille (Optional)
Attachment points on cabinet front corners for optional grille frame with black cloth
Note: Weight for grille frame is 2.0 lbs ((0.9 kg).
Rigging (Optional)
Two threaded M6 attachment points on cabinet bottom for optional MYA-DES cradle-style
yoke
Note: Weight for MYA-DES is 28.5 lbs (12.9 kg).
Dimensions
19.00" w x 25.38" h x 14.58" d (483 mm x 645 mm x 370 mm) without optional grille frame
Weight 76.0 lbs (34.5 kg) without optional grille frame
Weight
ENVIRONMENTAL
Operating Temperature
Non Operating Temperature
Humidity
0° C to +45° C
<–40° C or >+75° C
to 95% at 35° C
Operating Altitude
Non Operating Altitude
Shock
to 4600 m (15,000 ft)
to 95% at 35° C
30 g 11 msec half-sine on each of 6 sides
10 Hz – 55 Hz (0.010 m peak-to-peak excursion)
Vibration
26
Download from Www.Somanuals.com. All Manuals Search And Download.
ACHERON DESIGNER OPERATING INSTRUCTIONS
ACHERON DESIGNER COMPLIANCE
ACHERON DESIGNER DIMENSIONS
14.96
[380 mm]
6.96
[177 mm]
6.00
[152 mm]
19.00
[483 mm]
12.18
[309 mm]
25.00
[635 mm]
25.38
[645 mm]
14.00
[356 mm]
13.25
[337 mm]
12.25
[311 mm]
14.58
[370 mm]
3.51
[89 mm]
11.60
[295 mm]
5.25
[133 mm]
Acheron Designer
Weight
Without Grille Frame
With Grille Frame
76.0 lbs (34.5 kg)
78.0 lbs (35.4 kg)
Acheron Designer Dimensions
27
Download from Www.Somanuals.com. All Manuals Search And Download.
APPENDIX A: ACHERON DESIGNER SPECIFICATIONS
ø0.56
[ø14 mm]
14.96
[380 mm]
2.00
[51 mm]
19.00
[483 mm]
24.13
[613 mm]
6.96
[177 mm]
12.18
[309 mm]
29.82
[757 mm]
25.38
[645 mm]
27.62
[702 mm]
22.00
[559 mm]
9.00
[229 mm]
5.25
[133 mm]
Acheron Designer
3.00
[76 mm]
Weight
Without MYA-DES Yoke
With MYA-DES Yoke
76.0 lbs (34.5 kg)
104.5 lbs (47.4 kg)
Acheron Designer Dimensions with MYA-DES Cradle-Style Yoke
28
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
Download from Www.Somanuals.com. All Manuals Search And Download.
Meyer Sound Laboratories Inc.
2832 San Pablo Avenue
Berkeley, CA 94702
© 2012
Meyer Sound. All rights reserved.
Acheron Designer Operating Instructions, PN 05.211.005.01 A
T: +1 510 486.1166
F: +1 510 486.835
Download from Www.Somanuals.com. All Manuals Search And Download.
|