Meyer Sound PSW-6 User manual

Operating Instructions
PSW-6
Copyright © 1998
Meyer Sound Laboratories, Inc. All rights
reserved
Part # 05.073.012.01 Rev A
Self-Powered Subwoofer System
Keep these important operating instructions.
BACK FRONT

2
According to ISO/IEC Guide and EN 45014
Declaration of Conformity
The product herewith complies with the requirements
of the Low Voltage Directive 73/23/EEC and the EMC
Directive 89/336/EEC.
declares that the product:The Manufacturer:
Product Name: PSW-6
Product Options: All
Name: MeyerSoundLaboratories
Address: 2832San Pablo Avenue
Berkeley,California94702-2204,USA
conforms to the following Product Specifications:
Safety: EN 60065: 1994
EMC: EN 55022: 1987 - Class A
IEC 801-2: 1984 - 8 kV
IEC 801-3: 1984 - 3 V/m
IEC 801-4: 1984 - 0.5 kV Signal
Office of Quality Manager
Berkeley,CaliforniaUSA
October 1, 1995
Shock: 30 g 11 msec half-sine
on each of 6 sides
Vibration: 10  55 Hz (0.010 m
peak-to-peakexcursion)
Operatingtemperature: 0° C to +45° C
Nonoperatingtemp: < 40° C or > +75° C
Humidity: to 95% at 35°C
Operatingaltitude: to 4600 m (15,000 ft)
Nonoperatingaltitude: to 6300 m (25,000 ft)
Environmental Specifications for Meyer
Sound Electronics Products
Pour indiquer les risques
résultant de tensions
dangereuses
Zudiegefahrenvon
gefährlichespanning zeigen
Importantoperating
instructions
Pourindequer important
instructions
Zu wichtige betriebs-
anweisungund unter-
haltsanweisungzeigen
Frame or chassis
Masse, châssis
Rahmen oder chassis
Protectiveearth ground
Terre de protection
Die schutzerde
Para indicar azares provengo
de peligroso voltajes
Para indicar importante
funcionar y mantenimiento
instrucciones
Armadura o chassis Tierraproteccionista
These symbols indicate important safety or operating features in this booklet and on the chassis.
Dangerousvoltages:
risk of electric shock
Symbols Used
Contents
Using the PSW-6 ....................................................3
Full Range System Integration ................................7
AC Power .............................................................11
Audio Input ...........................................................13
Amplification and Protection Circuitry ...................13
Rigging .............................................................. 14
Safety Summary ................................................ 14
Controls and Connectors ................................... 15
Dimensions ........................................................ 16
1.0 kV Power Lines

3
Using the PSW-6
The PSW-6 exhibits a cardioid coverage pattern across
two full octaves from 30 Hz to 125 Hz. The power band-
width of the PSW-6 is designed to complement MSL-4
and MSL-6 systems.
The cardioid coverage pattern is created by a complex
electronic and geometric relationship between the four
drivers at the front of the cabinet and the two drivers at
the back of the cabinet.
This coverage pattern is very stable in one or two cabi-
nets and holds up in horizontal arc arrays and vertical
line arrays, provided that the array is assembled and
aligned according to the methods described in this
manual. The horizontal and vertical response pattern of a
single PSW-6 can be found on the PSW-6 data sheet.
Performance Verification
Meyer Sounds SIM® system II is recommended for
performing the measurements described in this docu-
ment.
To verify the performance of a PSW-6, place a single
PSW-6 on the ground in a large open space* and posi-
tion the measurement microphone as shown in the
illustration below.
When the PSW-6 is placed on the ground, an image
is created from the ground reflection. This ground
reflection is represented by the dotted PSW-6 in the
illustration below.
Note that an on axis ground plane measurement at a
minimum distance of 5 meters is necessary for accu-
rate low frequency measurement in this particular ap-
plication.
As a general rule, the minimum distance of the mea-
surement microphone from the front of the cabinet
should be equal to the height of the array. A distance
of at least three times the height of the array is ideal.
A single cabinet is roughly one meter high, but when
considered with its ground reflection, the height of the
array becomes two meters, or two cabinets in height.
This necessitates a minimum distance of 2 meters
between the front of the cabinet and the measurement
microphone. In this example a 5 meter minimum
distance is ideal as it is about three times the height of
the array.
Perform and store an initial measurement at this posi-
tion and then repeat the measurement at 5 meters
behind the cabinet.
If the dB SPL measurement taken at the front of the
cabinet is at least 15 dB greater than the measurement
taken at the back of the cabinet, the PSW-6 is function-
ing properly. If the PSW-6 does not meet this basic
performance verification specification contact Meyer
Sound Technical Support for further assistance.
* The time record for low frequencies in SIM is 640 ms. In order to prevent reflection from corrupting this free-field
measurement the PSW-6 should be at least 200 meters away from any large obstacle or boundary like walls or
buildings. If the nearest obstacle is less than 200 meters away then the rear of the cabinet should face the closest
large obstacle as this will minimize reflections during measurements.
image
groundmic

4
The Vertical Line Array
The PSW-6 should be vertically arrayed in a line with
the drivers positioned as shown above.
When the PSW-6 is flown high in the air, the ground
image is nearly eliminated, so it takes two vertically
stacked PSW-6s to achieve the same power output and
directional control as a single PSW-6 on the ground
(assuming the ground is a very hard smooth surface).
Both the single cabinet on the ground and the array
pictured above are examples of vertical line arrays and
result in about a 6 dB SPL increase from a single cabi-
net in free space and exhibit the following polar re-
sponse:
Two Vertical Line Arrayed PSW-6s @ 40 HZ*.
Two Vertical Line Arrayed PSW-6s @ 60 HZ.
Two Vertical Line Arrayed PSW-6s @ 100 HZ.
Two Vertical Line Arrayed PSW-6s @ 125 HZ.
* Each small black dot on the polar plot represents a measurement taken outdoors in a free-field environment.

5
The PSW-6 is designed to be vertically arrayed in a
line and not in an arch. Creating a vertical line array, or
in other words, stacking PSW-6s in a column, narrows
the vertical coverage of the system while maintaining
its horizontal coverage. Adding more power to the sys-
tem simply involves adding additional cabinets to the
line array.
In this type of array, the vertical coverage will extend
less than 5° from the top of the column. This dictates
that the height of the vertical line array correspond
directly to the maximum height at which low frequency
coverage is required.
Creating a Quiet Area
When two PSW-6s are placed ten to thirty meters apart
at a 90° horizontal angle a quiet area develops behind
the speakers. In this area the SPL is at least 15 dB
below the level within the coverage area.
In the following MAPPTM (Multipurpose Acoustical Pre-
diction Program) predictions the lightest color repre-
sents the highest SPL.
Note that the fingers in the coverage pattern are
caused when a mono signal of equal amplitude is sent
to two spaced speakers. Amplitude or phase panning
will minimize the interference pattern and smooth the
polar response.
The advantages of creating a quiet zone around the
stage would include less system leakage into open
microphones, reduced interference between the house
and monitor systems, and reduced exposure to high
SPL for those within the quiet area.
2 PSW-6s at 20 meters splayed 90owith a mono singal of equal level.

6
In comparison, the following MAPP prediction shows
two USWs at a 20 meter distance. Note the absence of
a quiet zone.
Walls and Boundaries
An additional advantage of the PSW-6 is that it can be
placed as close as 1 meter to a boundary without be-
ing subject to the massive cancelation caused by tradi-
tional subwoofers in near boundary conditions. This
makes the PSW-6 ideal for situations where there is a
wall in close proximity to the back of the stage.
The Horizontal Arch Array
The PSW-6 is designed to be horizontally arrayed in an
arc in groups of two as pictured above. Arraying two
PSW-6s horizontally increases the power within the
coverage area and creates a tighter horizontal re-
sponse pattern as illustrated in the following polar
plots:
Two Horizontally Arrayed PSW-6s @ 40 HZ.

7
Two Horizontally Arrayed PSW-6s @ 60 HZ.
Two Horizontally Arrayed PSW-6s @ 100 HZ.
Two Horizontally Arrayed PSW-6s @ 125 HZ.
Creating Large Horizontal Arrays
When creating a horizontal arch of more than two cabi-
nets additional electronics (beyond the standard LD-
1A) are required to help steer the system. Otherwise
there will be a significant decrease in the front to back
SPL ratio and excessive narrowing of the front polar
pattern at higher frequencies. For further information
on creating a large horizontal array contact Meyer
Sound Technical Support.
Set the Master, Mid-High and Sub gains on the LD-1A

8
Full Range System Integration
The PSW-6 was designed to couple with the MSL-6
using the phase and amplitude response characteris-
tics of the low cut filter of the LD-1A.
Combining the MSL-6s with the PSW-6 requires a spe-
cific external crossover function to prevent the MSL-6s
from operating below 125 Hz and deteriorating the car-
dioid pattern of the combined system. The LD-1A low
cut function inserted into the MSL-6 signal path
achieves this specific roll-off response.
The following example illustrates the method of estab-
lishing a cross over point between the PSW-6 and the
mid-high cabinets in a full range system.
Use channel 1 (CH-1) of the LD-1A to distribute the generator signal from SIM to the speakers. As pictured in the
block diagram below.
While this example specifically addresses aligning a
single PSW-6 on the ground with an MSL-6, it outlines
the basic techniques for integrating the PSW-6 into
any full range system. For array information on other
Meyer Sound products please refer to the product spe-
cific operating instructions.
Position the speakers as shown in the illustration below.
Note that for this measurement the microphone position
must be on axis at least 5 meters from the PSW-6 and
very close to the ground. In general, ground plane mea-
surements are undesirable as there is poor data above
5 kHz. However, in this a case ground plane measure-
ment is used just to set the proper low frequency cross
over point. Ground plane measurements tend to elimi-
nate low frequency ground reflections which can cause
a perceived but illusionary reversal in phase. Do not
attempt to EQ the combined system from this micro-
phone position as it is off axis from the MSL-6 high
horn.
InputSignal Mid-Hi Out
Sub Out
LD-1A
MSL-6
PSW-6
Setting the Crossover Frequency between the MSL-6 and the PSW-6 .

9
to 0dB. Push in the low-cut filter and make sure all of the other buttons in channel 1 are out . Remember only
channel 1 is in use so the settings on the other channels are irrelevant.
Mute the signal to the subs on the LD-1A. Measure and set the delay and response of the speaker. When a
stable trace appears pause the measurement and turn off the generator. Store and recall this trace.
Next, use the LD-1A to mute the signal to the MSL-6 and unmute the PSW-6. Use the delay established with the
MSL-6 measurement. Turn on the generator and measure the response of the PSW-6.
By looking at the relationship between these two traces you can see the acoustical crossover point between the
PSW-6 and the MSL-6.
Changing the relative levels of the PSW-6 and the MSL-6 will effect this acoustical crossover point. Ideally, this
acoustical crossover should occur close to 125 Hz, as this will provide the best frequency and phase addition
between cabinets.
An increase in the relative level of the PSW-6 to the MSL-6 will result in an increase in crossover frequency.
The second example above is undesirable as it will reduce the level of pattern control in the system. In systems
where a boost in low frequency energy is desired , we strongly recommend properly aligning the system so that
the cross over point and level between the MSL-6 and PSW-6 is close to 125 Hz. A CP-10 can then be inserted
into the signal path in front of the LD-1A and adjusted for the desired house curve.
dB SPL
125 Hz
PSW-6 response MSL-6 response
165 Hz
MSL-6 response
PSW-6 response
Channel 1 of the LD-1A is divided into four sections:
Main Section
(Channel Mute and Master Gain) DS-2 subsection
(Not used in this application)
Mid-Hi subsection
(Lo Cut Filter, Mid-Hi Mute, Mid
High Gain, and Array EQ Filter
[which is not used in this applica-
tion].) In this application this
subsection is used to control the
level of the MSL-6.
Sub subsection
(Sub Polarity Reversal,
Mute and Sub Gain). In
this application this
subsection is used to
control the level of the
PSW-6.

10
Unmute the subs and employ the low cut filter on the appropriate channel of the LD-1A. Measure the PSW-6 and
the MSL-6 together. The frequency response should look flat through the crossover. A noticeable reduction of
SPL at 125Hz is caused by one of two problems. The first is that the microphone is positioned too close to the
near-field of the speaker which can be solved by moving the microphone further away from the speaker. The other
probable cause of the cancelation is a reversal in phase somewhere in the signal path.
To test for a phase reversal, use the polarity reversal button on the Sub section of the LD-1A channel 1. If this
causes the response to become smooth through the cross over region, there is a phase reversal in the signal path
check the wiring and input polarity switches of all components in the system. While not good practice, in an emer-
gency the polarity reversal switch can be used throughout the performance.
Adjust the gain of the Mid-High cabinet and Sub cabinet using the LD-1A to optimize the phase and frequency
response so that the acoustical crossover point is close to 125Hz.
The illustrations shown below represent general guidelines for appropriate LD-1A settings for various combina-
tions of PSW-6s and MSL-6s.
1 PSW-6 on the ground
for each MSL-6 in the air.
4 PSW-6s on the ground
for each MSL-6 in the air.
Note that the Lo-Cut filter is engaged and all the other
buttons are out. The Sub output gain is set to 0 dB and
the Mid-Hi output gain is set to 0 dB.
Note that the Lo-Cut filter is engaged and all the other
buttons are out. The Sub output gain is set to -9 dB and
the Mid-Hi output gain is set to +3 dB, resulting in a
relative Sub to Mid-High gain difference of 12 dB.
Input Signal CP-10 LD-1A
MSL-6
PSW-6
Mid-Hi Out
Sub Out
House Curve Crossover

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AC Power
When AC power is applied to the PSW-6, the Intel-
ligent AC supply automatically selects the cor-
rect operating voltage, allowing the PSW-6 to be
used internationally without manually setting volt-
age switches. The Intelligent AC supply performs
the following protective functions to compensate for
hostile conditions on the AC mains:
 suppresses high voltage transients up to sev-
eral kilovolts
 filters common mode and deference mode
radio frequencies (EMI)
 sustains operation during low voltage periods
 provides soft-start power-up, which eliminates
high inrush current
The PSW-6 can withstand continuous voltages up to
275 V and allows any combination of voltage to
GND (i.e. Neutral-Hot-GND, Hot-Hot-GND). Con-
tinuous voltages higher than 275 V may damage the
unit.
The PSW-6 uses a NEMA L6-20P or IEC 309 male power
inlet and satisfies UL, CSA, and EC safety standards.
Voltage Requirements
The PSW-6 operates safely and without audio dis-
continuity if the AC voltage stays within either of two
operating windows: 85134 V or 165264 V, at 50 or
60 Hz. After applying AC power, the proper operat-
ing voltage is automatically selected, but the system
is muted. During the next three seconds, the pri-
mary fans turn on, the main power supply slowly
ramps on, the green Active LED on the user panel
illuminates, and the system is enabled to pass audio
signals.
TROUBLESHOOTING NOTE: If the Active LED does
not illuminate or the system does not respond to
audio input after ten seconds, remove AC power.
Electronics technicians with access to a test bench
can contact Meyer Sound to receive The Meyer
Sound Self-Powered Series MP-2 and MP-4 Field
Verification Procedure (part # 17.022.066.01). This
service document contains a series of tests to verify
that the power supply and amplifier are functioning
properly. Other users should contact Meyer Sound
or an authorized service center.
The PSW-6s power supply uses stored energy to
continue functioning for about 10 AC cycles if the
voltage decreases below 88V (a condition known as
brownout). The precise length of time the unit func-
tions during brownout depends on the operating
level and how low the voltage drops. The unit turns
off if the voltage does not increase above 88V for 1
to 5 seconds. If the PSW-6 shuts down due to
brownout, the power supply automatically turns on
if the voltage returns to the normal operating range.
If the PSW-6 does not turn back on after ten sec-
onds, consult the Troubleshooting section.
NOTE: We recommend that the supply be operated
at least a few volts away from the upper and lower
bounds of the operating range to avoid possible
shutdown.
Current Requirements
The PSW-6 presents a dynamic load to the AC
mains which causes the amount of current to fluctu-
ate between quiet and loud operating levels. Since
different types of 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 continuous RMS current is the maxi-
mum RMS current in a period of at least 10 seconds.
It is used to calculate the temperature increase in
cables, which is used to select cables that conform to
electrical code standards. It is also used to select the
rating for slow-reacting thermal breakers.
The maximum burst RMS current is the maximum RMS
current in a period of approximately 1 second. It is used
to select the rating for most magnetic breakers.
The maximum instantaneous peak current dur-
ing burst is used to select the rating for fast-
reacting magnetic breakers and to calculate the
peak voltage drop in long AC cables according to
the formula

12
Vpkdrop = Ipk x Rtotal cable
Use the table below as a guide to select cables and
circuit breakers with appropriate ratings for your
operating voltage.
The minimum electrical service amperage required
by a system of PSW-6s is the sum of their maxi-
mum continuous RMS current. We recommend
allowing an additional 30% above the minimum
amperage to prevent peak voltage drops at the
service entry.
TROUBLESHOOTING NOTE: In the unlikely
case that the circuit breakers trip (the white
center buttons pop out), do not reset the
breakers! Contact Meyer Sound for repair
information.
Power Connector Wiring Conventions
Use the following AC cable wiring diagram to
create international or special-purpose power con-
nectors:
AC cable color code
If the colors referred to in the diagram don't corre-
spond to the terminals in your plug, use the fol-
lowing guidelines:
 Connect the blue wire to the terminal marked
with an N or colored black.
 Connect the brown wire to the terminal
marked with an Lor colored red.
 Connect the green and yellow wire to the
terminal marked with an E(or ) or colored
green (or green and yellow).
Safety Issues
Pay close attention to these important electrical
and safety issues.
Use a power cord adapter to drive the
PSW-6 from a standard 3-prong outlet
(NEMA 5-15R;125 V max).
The PSW-6 requires a grounded outlet.
Always use a grounding adapter when
connecting to ungrounded outlets.
Do not use a ground-lifting adapter or cut
the AC cable ground pin.
Keep all liquids away from the PSW-6 to avoid
hazards from electrical shock.
Do not operate the unit if the power cables are
frayed or broken.
Tie-wrap anchors on the amplifier chassis pro-
vide strain relief for the power and signal cables.
Insert the plastic tie-wraps through the anchors
and wrap them around the cables.

13
Audio Input
The PSW-6 uses a 10 kΩbalanced input imped-
ance to a three-pin XLR connector wired with the
following convention:
Pin 1  220 kΩto 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; their polarity can be reversed with the
input polarity switch on the user panel. If the
switch is in the up position, pin 2 is hot relative to
pin 3, resulting in a positive pressure wave when a
positive signal is applied to pin 2. Use standard
audio cables with XLR connectors for balanced
signal sources.
TROUBLESHOOTING NOTE: Shorting an input con-
nector pin to the case can form a ground loop and
cause hum. If other abnormal noises (hiss, pop-
ping) are produced from the loudspeaker, discon-
nect the audio source from the speaker. If the noise
stops, then the problem is not within the loud-
speaker; check the audio input and AC power.
A single source can drive multiple PSW-6s with a
paralleled input loop, creating an unbuffered hard-
wired loop connection. Make certain that the source
device can drive the total load impedance pre-
sented by the paralleled input circuit. For ex-
ample, since the input impedance of a single
PSW-6 is 10 kΩ, cascading 20 units produces a
balanced input impedance of 500Ω. If a 150Ω
source is used, the 500Ωload results in a 2.28 dB
loss.
Amplification and
Protection Circuitry
The PSW-6 is powered by the Meyer MP-4, a
four-channel 2480 Watt amplifier (620 W/ch) uti-
lizing complementary power MOSFET output stages
(class AB/H). The following sections discuss the
MP-4s limiting circuitry and four-fan cooling sys-
tem.
The TruPower Limiting System
Conventional limiters assume that the resistance
of a speaker remains constant and set the limiting
threshold by measuring voltage only. This method
is inaccurate because the speakers resistance
changes in response to the frequency content of
the source material and thermal variations in the
speakers voice coil and magnet. Conventional
limiters begin limiting prematurely, which under-
utilizes system headroom and deprives the speaker
of its full dynamic range.
The TruPower Limiting (TPL) system accounts for
varying speaker impedance by measuring cur-
rent, in addition to voltage, to compute the actual
power dissipation in the voice coil. TPL
 improves performance before and during
limiting by allowing each driver to produce
its maximum SPL across its entire frequency
range;
 protects the drivers by controlling the tem-
perature of the voice coil;
 eliminates long-term power compression when
the system is operated at high levels for
extended periods.
The PSW-6 performs within its acoustical specifi-
cations and operates at a normal temperature if
the limit LEDs are on for no longer than two
seconds, and off for at least one second. If either
LED remains on for longer than three seconds,
that channel is hard limiting with the following
negative consequences:
 Increasing the input level will not increase
the volume.
 The system distorts due to clipping and non-
linear driver operation.
 Unequal limiting between the low and high
channels alters the frequency response.
 The life-span of the drivers is reduced be-
cause they are subjected to excessive heat.
 Serious degradation of the cardioid response
pattern.
NOTE: Although the TPL limiters exhibit smooth sonic
characteristics, we do not recommend using them for
intentional compression effects. Use an outboard com-
pressor/limiter to compress a mixed signal.
Differential Inputs

14
Fans and Cooling System
The PSW-6 uses a forced-air cooling system with four fans
to prevent theamplifiers from overheating. The fans draw air
in through ducts on the front of the cabinet, over the
heatsinks, and out the rear of the cabinet. Since dust does
not accumulate in the amplifier circuitry, its life-span is
increased significantly.
The front grill surface acts as an air filter for the cooling
system and should always be in place during operation.
Despite the filtering, extensive use or a dusty operating
environment can allow dust to accumulate along the path
of the airflow, preventing normal cooling. We recom-
mend periodically removing the grill and amplifier module
and using a vacuum cleaner to clear dust from the grill,
fans, and heatsinks. Make sure that the air ducts are clear
and that there is at least six inches clearance for exhaust
behind the cabinet.
Two variable-speed primary fans run continuously with
an inaudible operating noise of 22 dBA at 1 m at their
slowest speed. The primary fans begin increasing
speed when either of the two heatsinks reaches 42°C.
The fans reach full speed at 62°C and are barely
audible near the cabinet, even without an audio signal.
In the unusual event that the heatsink temperature reaches
74°C, the secondary fans turn on and are clearly audible.
The secondary fans turn on in response to
 primary fan failure (check status immediately);
 high source levels for a prolonged period in hot
temperatures or direct sunlight;
 accumulation of dust along the cooling path;
 driver failure.
The secondary fans turn off when the temperature
decreases to 68°C.
TROUBLESHOOTING NOTE: In the highly unlikely event
that the secondary fans do not keep the temperature below
85°C, the PSW-6 automatically shuts down until AC power
is removed and reapplied. If the PSW-6 shuts down again
after cooling and reapplying AC power, contact Meyer
Sound for repair information.
Rigging
A single PSW-6 weighs 442 lb (201 kg) and has twelve
pivoting lift rings (six on top, six on bottom), each with a
maximum working load capacity of 1500 lb (5:1 safety
factor).
Rigging load ratings assume a straight tensile pull and that
the cabinet is in new condition. If these conditions are not
met, the load ratings can be reduced significantly. Load
ratings can also be reduced by age, wear, and damage.
It is important to inspect the rigging hardware regularly
and replace worn or damaged components immediately.
The cabinet, exposed electronic circuitry, and drivers can
receive protective treatment that permits safe use in wet
conditions.Additionally, a rain hood can be fitted to shield
cables and electronics. Do not install a unit outdoors
without weather protection! Contact Meyer Sound for
more information.
NOTE: All Meyer Sound products must be used in accor-
dance 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 done only by experienced professionals.

15
 To reduce the risk of electric shock, disconnect the loud-
speaker 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 notputobjects containing liquidon,or near,
theunit.
 To reduce the risk of overheating the loudspeaker, avoid
exposingittodirectsunlight.Donotinstalltheunitnearheat
emitting appliances, such as a room heater or stove.
 This loudspeaker contains potentially hazardous voltages.
Donot attempt to disassemble the unit. The unit contains no
user serviceable parts. Repairs should be performed only
by factory trained service personnel.
English Français
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Safety Summary
 Um die Gefahr eines elektrischen Schlages auf ein Mini-
mum zu reduzieren, den Lautsprecher vom Stromnetz
trennen, bevor ggf. ein Audio-Schnittstellensignalkabel
angeschlossen wird. Das Netzkabel erst nach Herstellung
allerSignalverbindungen wieder einstecken.
 DerLautsprecher an eine geerdete zweipolige Dreiphasen-
Netzsteckdoseanschließen. Die Steckdose muß mit einem
geeigneten Abzweigschutz (Sicherung oder
Leistungsschalter) verbunden sein. Der Anschluß der
unterbrechungsfreienStromversorgung an einen anderen
Steckdosentyp kann zu Stromschlägen führen und gegen
dieörtlichen Vorschriften verstoßen.
 DerLautsprecher nicht an einem Ort aufstellen, andemsie
mit Wasser oder übermäßig hoher Luftfeuchtigkeit in
Berührungkommenkönnte.
 Darauf achten, daß weder Wasser noch Fremdkörper in
dasInnere den Lautsprechereindringen.Keine Objekte, die
Flüssigkeitenthalten,aufodernebendieunterbrechungsfreie
Stromversorgungstellen.
 Um ein Überhitzen dem Lautsprecher zu verhindern, das
GerätvordirekterSonneneinstrahlungfernhaltenundnicht
in der Nähe von wärmeabstrahlenden Haushaltsgeräten
(z.B. Heizgerät oder Herd) aufstellen.
 Im Inneren diesem Lautsprecher herrschen potentiell
gefährliche Spannungen. Nicht versuchen, das Gerät zu
öffnen.Es enthält keine vom Benutzer reparierbarenTeile.
Reparaturen dürfen nur von ausgebildetem
Kundenienstpersonaldurchgeführtwerden.
 Parareducir el riesgo de descarga eléctrica, desconecte de
laredel altoparlanteantesdeinstalarelcablede señalización
de interfaz de la segnale. Vuelva a conectar el conductor
flexible de alimentación solamente una vez efectuadas
todas las interconexiones de señalizatción.
 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
humedadexcesiva.
 No deje que en el altoparlante entre agua ni ningún objeto
extraño.No ponga objetos con líquidos encima delaunidad
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.
 Pour réduire le risque délectrocution, débrancher la prise
principale de lhaut-parleur, avant dinstaller le câble
dinterfaceallantàlaudio.Nerebrancherlebloc 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
munieduneprotection adéquate(fusible oucoupe-circuit). Le
branchementdanstoutautregenredeprisepourraitentraîner
unrisquedélectrocutionetpeutconstituerune 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.
 Pouréviterunesurchauffedelhaut-parleur,conserver-la à
labri du soleil. Ne pas installer à proximité dappareils
dégageantdelachaleurtelsqueradiateurs ou appareils de
chauffage.
 Ce haut-parleur contient des circuits haute tension
présentantundanger.Ne jamais essayer de le démonter. Il
nyaaucuncomposantquipuisseêtreréparé parlutilisateur.
Toutes les réparations doivent être effectuées par du per-
sonnel qualifié et agréé par le constructeur.

16
Meyer Sound Laboratories, Inc.
2832San Pablo Avenue
Berkeley,California 94702
Telephone: 510 - 486 - 1166
FAX: 510 - 486 - 8356
E-mail: [email protected]
http://www.meyersound.com
Contact Information
Controls and Connectors
European Rear User Panel
with IEC 309 connector
Rear User Panel shown with the optional
Remote Monitoring System (RMS) panel
Meyer Sound Germany GmbH
Carl Zeiss Strasse 13
D-56751 Polch
Germany
Telephone: [phone]
FAX: [phone]
E-mail: [email protected]
Dimensions
All units in inches