Meyer Sound Self-Powered Loudspeakers UM-100P User manual

Operating Instructions
UM-P Series
UM-1P and UM-100P
Self-Powered Loudspeakers
Copyright © 1997
Meyer Sound Laboratories, Inc.
All rights reserved
art #: 05.079.008.01 Rev B
(Serial Numbers 981000 and above)

Contents
Symbols Used
Introduction.......................................................... 3
AC Power ............................................................. 4
The Modular Rear Panel ..................................... 5
Amplification, Limiting, and Cooling ystem.... 6
Example Application ........................................... 7
Verifying Driver Polarity .................................... 8
Troubleshooting ................................................ 8
afety ummary .............................................. 11
Rear Panel Connectors .................................... 12
Dimensions ...................................................... 12
our indiquer les risques
résultant de tensions
dangereuses
Zu die gefahren von
gefährliche spanning zeigen
Important operating
instructions
our indequer important
instructions
Zu wichtige betriebs-
anweisung und unter-
haltsanweisung zeigen
Frame or chassis
Masse, châssis
Rahmen oder chassis
rotective earth ground
Terre de protection
Die schutzerde
ara indicar azares provengo
de peligroso voltajes
ara indicar importante
funcionar y mantenimiento
instrucciones
Armadura o chassis Tierra proteccionista
These symbols indicate important safety or operating features in this booklet and on the chassis.
Dangerous voltages:
risk of electric shock
Declaration of Conformity According to ISO/IEC Guide and EN 45014
Safety: EN60065: 1994
EMC: EN55103-1 emmission
EN55103-2 immunity
Name: Meyer Sound Laboratories, Inc.
Address: 2832 San Pablo Avenue
Berkeley, California 94702-2204, USA
The Manufacturer:
Conforms to the following Product Specifications:
Declares that the product:
The product herewith complies with the requirements
of the Low Voltage Directive 73 / 23 / EEC and
the EMC Directive 89 / 336 / EEC.
Office of Quality Manager
Berkeley, California USA
December 23, 1997
European Office:
Meyer Sound Lab. GmbH
Carl Zeiss Strasse 13
56751 Polch, Germany
Made by Meyer Sound Laboratories
Berkeley, California USA
Product Name: UM-1P, UM-100P
Product Options: All
Environmental Specifications for
Meyer Sound Electronics Products:
Operating temperature: 0oto + 45o
Nonoperating temperature: < -40o C or > +75oC
Humidity: to 95% at 35
Operating Altitude: to 4600 m (15,000 ft)
Nonoperating Altitude: to 6300 m (25,000 ft)
Shock: 30g 11 msec half-sine
on each of 6 sides
Vibration: 10 Hz to 55 Hz (0.010m
peak-to-peak excursion)

!
Introduction
The Integrated Design
The Meyer UM-P Series (UM-100P, UM-1P) self-
powered stage monitors are composed of:
• one12-inchconedriverandone3-inchdiaphragm
compression driver;
• phase-corrected, optimized control electronics;
• a two-channel amplifier (350 Wrms/ch).
The drivers, control electronics, and amplifier are inte-
grated into a compact enclosure. The UM-P Series is
intended to be used as a stage monitor but can also be
used as a mid-hi and musical instrument speaker.
The UM-1P horn’s narrow beamwidth (45°H x 45°V)
permits precise coverage with minimal interaction be-
tweenneighboring monitors. TheUM-100Phorn’swide
horizontal beamwidth (100°H x 40°V) addresses a
larger coverage area with fewer speakers.
The UM-P Series, more than a powered version of the
Meyer Ultra-monitor, implements these significant de-
sign improvements:
• Theamplifieris optimized forthesystem, providing
substantialpowerwithoutendangeringthedrivers.
• The integrated design simplifies setup and in-
stallation, eliminates amp racks, and extends the
durability and reliability of the loudspeaker.
• The gain structure between the control electronics
and amplifier is perfectly matched.
The UM-P produces flat acoustical phase and amplitude
response, full-range bandwidth, precise imaging, and
exceptional system impulse response.
The UM-P Horns: Constant-Q
In a recent research and development effort, Meyer
Sound solved the most difficult problems associated
with horn design. In order to appreciate the significance
of this work, it is necessary to define an often misunder-
stood term: the beamwidth of a horn is the angle at
which the sound pressure at a given frequency decreases
to half (–6 dB) its on-axis amplitude. Specifying beam-
width using the –6 dB points has been proposed as the
audio industry standard and Meyer Sound adheres to
this definition.
NOTE: Unfortunately, beamwidth is often used to de-
scribe the angle at which the sound pressure decreased
10 d from its on-axis amplitude because many listeners
perceive this as a decrease to half the SPL. When reading
a beamwidth specification, it is essential to determine
whether it refers to the 6 or 10 d points because they
indicate very different results: the 10 d points yield a
wider angle.
Previoustechnologiesproducedhornswhosebeamwidth
varied over the operating frequency range. These horns
also displayed nonuniform frequency response within,
andsignificantsidelobeenergyoutsidetheirbeamwidth.
Both undesirable characteristics, particularly prevalent
for horns with a wide beamwidth, make array design
extremely uproblemactic
The UM-P was developed in Meyer Sound’s anechoic
chamber by measuring coverage patterns using angular
and frequency resolutions of 1° and 1¦36 octave, respec-
tively.TheUM-Phornsexhibitconstant-Q:thebeamwidth
remainsconsistentacrossthehorn’soperatingfrequency
range in both the vertical and horizontal planes.
Both horns share the following remarkable attributes:
• uniformfrequencyresponsewithin the beamwidth
• rapid and uniform amplitude attenuation for all
frequencies outside the beamwidth
• minimal side lobes
AC Power
The UM-P uses a PowerCon locking 3-pole AC mains
connector that prevents inadvertent disconnection. The
unit must have the correct power cord for theAC power
in the area in which it will be used.
When AC power is applied to the UM-P, an Intelligent
ACtm supply automatically selects the correct operating
voltage, allowing the UM-P to be used internationally
withoutmanually setting voltage switches. TheIntelligent
AC supply performs the following protective functions
Engagement
2
1
2
1
3
Separation

"
to compensate for hostile conditions on the AC mains:
• suppresses high voltage transients up to several
kilovolts
• filters EMI (radio frequencies and noise present
on the AC line)
• sustains operation during low-voltage periods,
which minimizes audio discontinuity
• provides soft-start power-up, which eliminates
high inrush current
The UM-P can withstand continuous voltages up to
264V and allows any combination of voltage to GND
(i.e. Neutral-Hot-GND, Hot-Hot-GND). Continuous
voltages higher than 264V may damage the unit.
Voltage Req irements
The UM-P operates safely and without audio disconti-
nuity if the AC voltage stays within the range 88–264V,
47–63 Hz. After applying AC power, the system is muted
while the circuitry charges up and stabilizes. After two
seconds, the On/Temp. LED on the user panel illumi-
nates green, the system unmutes and is ready to pass
audiosignals. If the On/Temp. LED doesnot illuminate
or the system does not respond to audio input after ten
seconds, consult the Troubleshooting section.
The UM-P’s power supply uses stored energy to continue
functioning for about 10AC cycles if the voltage decreases
below 88V (a condition known as brownout). The precise
length of time the unit functions during brownout
depends onthe operating leveland how lowthevoltage
drops. The unit turns off if the voltage does not increase
above 88V before the storage circuits are depleted. If
the UM-P shuts down due to brownout, the power
supply automatically turns on after three seconds if the
voltage returns to the normal operating range. If the
UM-P does not turn back on after ten seconds, 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.
C rrent Req irements
Each UM-P requires approximately 3Arms @115V
(1.5Arms@230V) for proper operation, allowing up to
five UM-Ps to be powered from one 15A circuit. How-
ever, we recommend powering no more than three UM-Ps
per 15Abranch to allow a 30% margin for peak voltages.
The UM-P presents a dynamic load to the AC mains
which causes the amount of current to fluctuate be-
tween quiet and loud operating levels. This affects the
number of UM-Ps that can be used for a given breaker
type. Since different types of cables and circuit breakers
heat up and trip at varying rates, it is essential to
understand the types of current ratings and how they
correspond to circuit breaker and cable specifica-
tions.
ThemaximumcontinuousRMScurrentisthe maximum
RMS current over a duration 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 over a one second duration. It is used to
select the rating for most magnetic breakers.
Themaximuminstantaneouspeakcurrentduringburst
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
Vpkdrop = Ipk x Rtotal cable
Usethe table below asa guide toselectcables and circuit
breakers with appropriate ratings for your operating
voltage.
sgnitaRtnerruCP-MU
V511 V032 V001
SMReldI
A52.0
SMR
A31.0
SMR
A3.0
SMR
SMRsuounitnoC.xaM
A8.2
SMR
A4.1
SMR
A2.3
SMR
SMRtsruB.xaM
A2.3
SMR
A6.1
SMR
A7.3
SMR
tsruBgniruDkaeP.xaM
A0.5
KAEP
A5.2
KAEP
A8.5
KAEP
To determine the minimum total service power re-
quired by a system of UM-P, or other Meyer self-pow-
ered speakers, add their maximum continuous RMS
currents together. We recommend allowing an addi-
tional 30% above the minimum amperage to prevent
peak voltage drops at the service entry and nuisance
tripping.

#
Power Connector Wiring
Use the following AC cable wiring diagram to create
international or special-purpose power connectors:
brown = hot
blue =
neutral
yellow/green =
earth ground
(chassis)
AC cable color code
If the colors referred to in the diagram don't correspond
to the terminals in your plug, use the following guide-
lines:
• 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 Iss es
Do not use a ground-lifting adapter or cut the AC
cable ground pin.
Keep all liquids away from the UM-P to avoid hazards
from electrical shock.
Do not operate the unit with worn or frayed cables;
replace them immediately.
If the UM-P will be installed outdoors contact Meyer
Sound for information about the rain hood and weather
protection for the drivers and electronics.
While a single UM-P can be hung by its handle bars, do
not hang any additional weight from the cabinet. UM-P
handle bars are not designed to support heavy rigging
loads.
The Modular Rear Panel
The rear panel of the UM-P has two slots for processor
modules. The top slot contains the Audio Input and
Control Module; the bottom slot contains the optional
Remote Monitoring System™ (RMS) Module.Ablank
plate covers the bottom slot if RMS is not installed. For
drawings of these modules, see page 13.
A dio Inp t
Therearethree,interchangeableAudioInputandControl
Modules with optimized connectors and controls for
different applications. Each module has a 24V Fan
connector to power an optional fan (see page 7).
Each module uses a three-pin, female XLR audio input
connectorwitha10kΩ balancedinputimpedancewired
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. Use
standardaudiocableswithXLR connectors forbalanced
signal sources. A single audio source can drive multiple
UM-Ps with a paralleled input loop, creating an unbuf-
fered hardwired loop connection, with negligible loss
in signal level. For example, since the input impedance
of one UM-P is 10 kΩ, looping 20 UM-Ps produces a
balanced input impedance of 500Ω. With a 150Ω audio
source, the 500Ωload results in only a 2.28 dB loss.
Looping Audio Input Module
This standard module uses a balanced, female XLR
connectorforaudio input andamale XLR loopconnector
to interconnect multiple speakers. The audio input
connector is hardwired with pin 2 hot to comply with
audio industry standards. The loop connector, wired in
parallel to the audio input, transmits the input signal if
the UM-P is turned off for any reason.
S mming A dio Inp t Mod le
This module has a balanced, female XLR connector for
audio input but has, instead of a loop connector, a
secondfemaleXLRconnectorthat functions as a summing
input. Applying a signal to one of the inputs results in a
normal signal level. Utilizing both summing inputs
creates acorrectly summed mono signal with each input
6 dB below the level of a single input. This is an effective
method for distributing both sides of a stereo signal to
a single UM-P without requiring external level control.
Differential Inputs

$
Looping, Polarity, and Attenuating Audio
Input Module
This module has a balanced, female XLR audio input
connector, a male XLR loop connector, an input polarity
switch, and a level attenuator knob. With the input
polarity switch 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. With the
switch down (–), pin 3 is hot relative to pin 2, resulting
in a negative pressure wave when a positive signal is
applied to pin 2. The level attenuator knob operates
between 0 dB (no level attenuation) in a fully clock-
wise position to –12 dB in a fully counter-clockwise
position.
Remote Monitoring System
The UM-P can be equipped to operate with the Remote
Monitoring System (RMS) network and software ap-
plication. RMS displays signal and power levels, driver
and cooling fan status, limiter activity, the state of the
polarity switch, attenuator level, and amplifier tem-
perature for all speakers in the network on a Windows-
based PC. RMS is an excellent field-diagnostic tool that
removes the guesswork from troubleshooting during a
performance. All Meyer RMS-compatible speakers use
the same RMS module so they can be easily exchanged
between speakers (depicted on back page). Installing an
RMS module requires only a Phillips screwdriver.
Contact MeyerSound for moreinformation about RMS.
Amplification, Limiting, and
Cooling System
Amplification and Limiting
Each driver in the UM-P is powered by one channel of a
proprietary Meyer Sound amplifier utilizing comple-
mentarypowerMOSFEToutputstages(classAB,bridged,
350 Wrms/ch). Each channel has a limiter that prevents
driver over-excursion and regulates the temperature of
the voice coil. The limiters protect the drivers without
the glaring compression effects imposed by typical
limiters, allowing high SPLs across each driver’s entire
frequency range. Limiter activity for the high and low
channels is indicated by two yellow Limit LEDs on the
rear panel (the high limit is above the low limit LED).
The UM-P performs within its acoustical specifications
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 incurs these negative
consequences:
• Increasing the input level will not increase the
volume.
• Thesystemdistortsduetoclippingandnonlinear
driver operation.
While the UM-P limiters fully protect the system under
overload conditions and exhibits smooth sonic charac-
teristics, we recommend that you do not intentionally
drive the UM-P into continuous limiting to attain com-
pression effects.
For applications where large amounts of compression
are required, we recommend using an outboard com-
pressor/limiter for greater control of limit and com-
pressor effects.
Amplifier Natural Convection Cooling System
The UM-P employs a natural convection cooling sys-
tem that depends on air flow from below the cabinet
over the heatsink. Allow for proper ventillation of
fresh air when using the speaker.
If the temperature of the heatsink reaches 85°C (185°F),
the On/Temp. LED on the rear panel turns from green
(On) to red (Temp.) and the limiter threshold is lowered
to a safe level to prevent the amplifiers from overheat-
ing. Under high temperature conditions the limiter
thresholdisreducedto6dB. Whentheheatsinktmeperature
decreases to 75°C (167°F), the On/Temp. LED changes
from red to green and the limiter threshold returns to
normal.
! The heatsink gets too hot to touch during normal
operation. Use extreme caution when approaching the
rear of the cabinet.
Fan Assembly Kit
While convection cooling is adequate for most appli-
cations, driving the UM-P into frequent limiting under
severe temperature conditions, or where ventilation is
restricted, an optional fan kit is available to maintain a
safe operating temperature:
The easy-to-install fan, powered by the 24V Fan rear
panel connector, blows air directly onto the heatsink.
The fan speed increases as the heatsink temperature
rises, which maintains a safe operating temperature
with minimal fan noise. Contact Meyer Sound to order
the fan kit.

%
Power S pply Fan
The power supply is cooled by a single small internal
fan that turns on low when the unit is first powered up.
The fan doubles its speed as the system is driven with
audio. Since the fan draws air in from, and exhausts it
out the side of the cabinet, there must be at least six
inches on the amplifier’s side of the cabinet and ad-
equate air flow.
UM P Applications
In half-space loading condition, the UM-P will typically
produce a maximum SPL of 135 dB at 1 meter with a
frequency response down to 60Hz, which is perfect for
vocals and most instruments. When using the UM-P in
most applications that require SPL in the sub harmonic
frequencies, such as monitoring drums and bass, the
UM-P should be supplemented with a subwoofer such
as the Meyer USW-1P or 650-P depending on the needs
of the end user. For ideas on integrating the UM-P with
otherMeyerSoundproductscontactMeyerSoundTechnical
Support.
The Constant Q design of the horn allows frequencies
outside of the coverage area of the speaker to attenuate
quickly. This is excellent for monitoring where several
different monitors are used in close proximity. When
placing the monitor carefully consider the coverage
pattern of the UM-P and UM-100P.
The UM-1P’s coverage area is:
–6 dB points: 45° H x 45° V
–10 dB points: 65° H x 65° V
The UM-100P’s coverage area is:
–6 dB points: 100° H x 40° V
–10 dB points: 120° H x 60° V
The following drawings illustrate the coverage area of
each horn from three different perspectives in order to
depict the three dimensional coverage pattern.
UM-1P (Side View)
UM-100P (Top View)
UM-100P (Front View)
UM-1P (Front View)
UM-1P (Top View)
UM-100P (Side View)

&
Verifying Polarity
Incorrect driver polarity impairs system performance
and may damage the drivers. All Meyer Sound loud-
speakers are shipped with the drivers in correct align-
ment.
If the driver or circuit wiring has been removed or
disassembledit is essential to check the polarity between
adjacent monitors and between drivers and between
adjacent loudspeakers.
Polarity in Adjacent Loudspeakers
Use the following test procedure to verify the polarity
between two adjacent loudspeakers of the same type:
1. Position two loudspeakers adjacent to each other.
2. Place a measurement microphone 3ft. from the
speakers and 3 to 4 feet above the UM-1Ps, on the
axis between the speakers.
3. Connect a signal source to one speaker and note
the frequency response and overall level.
4. Apply the same signal to the second speaker with
the first speaker still connected.
The polarity is correct if the frequency response remains
constant with a 5-6 dB SPL increase in amplitude.
Broadband cancellation (decreased overall level) in-
dicates polarity reversal.
Since polarity reversal causes excessive driver ex-
cursion at high source levels, use moderate levels
when conducting these tests.
Driver Polarity in the Same UM-P
Use the following test procedure to verify polarity
between drivers in the same loudspeaker:
1. Place a monitoring microphone 1 meter from the
front of the loudspeaker at the midway point be-
tween the high and low frequency drivers.
2. Connect a full range signal to the loudspeaker and
note the frequency response.
The polarity is correct if the frequency response is smooth
through the crossover region (800Hz to 1.5kHz). Can-
cellation of 6dB or more in this region indicates polarity
reversal.
Troubleshooting
This section suggests several possible solutions to some
common problems encountered by UM-P users and is
not intended to be a thorough troubleshooting guide.
Qualified electronics technicians with access to a test
bench can request the following documents from Meyer
Sound: Troubleshooting Guide, The Low Frequency
Driver Replacement Procedure, andThe High Frequency
Driver Replacement Procedure for the UM-1P/100P.
he On/ emp. LED does not illuminate,
there is no audio, and the power supply
fan is off.
1. Make sure the AC power cable is the correct type
for the regional voltage and that it is securely
connected to the AC inlet then unplug and recon-
nect the AC cable.
2. Use an AC voltmeter to verify that the AC voltage
is within the ranges 88–264V, 47–63 Hz.
3. Call Meyer Sound Technical Support.
he On/ emp. LED is illuminated but there
is no sound.
1. Verify that the audio source (mixer, EQ, delay) is
sending a valid signal.
2. Make sure the XLR cable is securely fastened to the
XLR audio input connector.
3. Verify that the XLR cable is functioning by substi-
tuting another cable or by using the cable in ques-
tion in a working system.
!
UM-P
Reference
UM-P
Under Test
3 Feet

'
4. Send the audio signal to another speaker to insure
signal presence and that the level is within the
proper range. Turn the source level down before
reconnectingthe audio inputand increasethe level
slowly to avoid a sudden blast of sound.
5. Ifpossible,monitortheaudiosourcewithheadphones.
Hum or noise is produced by the speaker.
1. Disconnect the audio input. If the hum ceases, the
noise originates somwhere earlier in the signal
path.If thenoise persists, the problemis within the
UM-P. In this case return the unit to the factory or
nearest authorized service center.
2. Make sure the XLR cable is securely fastened to the
XLR audio input connector.
3. Send the audio signal to another speaker to insure
signal presence and that the level is within the
proper range. Turn the source level down before
reconnectingthe audio inputand increasethe level
slowly to avoid a sudden blast of sound.
5. Hum or noise can be produced by a ground loop.
Since the UM-P is effectively ground-lifted, this
should not occur unless grounds are extremely
different voltages.
he audio produced by the speaker is
distorted or compressed but the limit light
is not illuminated.
1. Make sure the XLR cable is securely fastened to the
XLR audio input connector.
2. Send the audio signal to another speaker to insure
that the level is within the proper range. Turn the
source level down before reconnecting the audio
input and increase the level slowly to avoid a
sudden blast of sound.
3. Monitor the audio source with headphones.
he audio produced by the speaker is
highly compressed and the limit light is
constantly yellow.
1. Turn down the level of the input signal to the
speaker system.
Only the high or low driver seems to pro-
duce sound.
1. Make sure the audio signal is full-range and has
not been filtered in a previous stage of the signal
chain. If possible, monitor the audio source with
high-quality headphones.
2. Send the audio signal to another speaker to insure
that the signal is full-range. Turn the source level
down before reconnecting the audio input and
increase the level slowly to avoid a sudden blast of
sound.
3. Use a sine wave and/or pink noise generator to
send a variety of frequencies to the speaker.
here is some sound but the On/ emp.
LED turns from green to red.
Thisoccurswhentheheatsinktemperaturereaches85°C
(185°F), indicating that the amplifier is thermally over-
loaded. The limiter threshold has dropped to a safe
level, so the audio level is probably reduced.
1. Make sure there is enough clearance above, below,
and behind the unit.
2. Make sure there is sufficient air flow around the
unit.
3. Avoid exposing the heatsink to direct sunlight if
the ambient temperature is high.
4. If the ambient temperature is greater than 30°C
andthisconditionoccursfrequently,contactMeyer
Sound to order the optional Fan Kit.
See the section Amplification, Limiting, and Cooling
System on page 6 for a complete discussion about the
cooling system.
here is no sound, the On/ emp. LED is
dim or off, and the power supply fan is on
high speed.
This extremely rare event occurs when the power supply
overheats,causinga1-2minuteinterruptioninoperation.
The unit turns on again when the power supply has
cooled sufficiently.
1. Make sure there is at least six inches clearance
behind the unit.
2. Make sure there is sufficient air flow around the
unit.
3. Avoid exposing the unit to direct sunlight in high
ambient temperature.
See the section Amplification, Limiting, and Cooling
System on page 6 for a more information about the
power supply’s internal fan and cooling system.


• To reduce the risk of electric shock, disconnect the loud-
speaker from theAC mains before installing audio cable.
Reconnect the power cord only after making all signal
connections.
• Connecttheloudspeakerto atwo-pole,threewiregrounding
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
withoutusingweatherprotectionequipmentfromMeyer
Sound.
• Do not allow water or any foreign object to get inside the
loudspeaker. Do not put objects containing liquid on, or
near, the unit.
• To reduce the risk of overheating the loudspeaker, avoid
exposing it to direct sunlight. Do not install the unit near
heat emitting appliances, such as a room heater or stove.
• Thisloudspeaker 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.
English Français
Deutsch Español
Safety S mmary !
• Um die Gefahr eines elektrischen Schlages auf ein Mini-
mum zu reduzieren, den Lautsprecher vom Stromnetz
trennen, bevor ggf. ein Audio-Schnittstellensignalkabel
angeschlossenwird.DasNetzkabelerstnach Herstellung
aller Signalverbindungen wieder einstecken.
• DerLautsprecheraneinegeerdetezweipoligeDreiphasen-
Netzsteckdoseanschließen.DieSteckdosemußmiteinem
geeigneten Abzweigschutz (Sicherung oder
Leistungsschalter) verbunden sein. Der Anschluß der
unterbrechungsfreienStromversorgunganeinenanderen
Steckdosentyp kann zu Stromschlägen führen und gegen
die örtlichen Vorschriften verstoßen.
• Der Lautsprecher nicht an einem Ort aufstellen, an dem
sie mit Wasser oder übermäßig hoher Luftfeuchtigkeit in
Berührung kommen könnte.
• Darauf achten, daß weder Wasser noch Fremdkörper in
das Innere den Lautsprecher eindringen. Keine Objekte,
die Flüssigkeit enthalten, auf oder neben die
unterbrechungsfreie Stromversorgung stellen.
• Umein Überhitzen demLautsprecherzu verhindern,das
Gerät vor direkter Sonneneinstrahlung fernhalten und
nicht in der Nähe von wärmeabstrahlenden
Haushaltsgeräten (z.B. Heizgerät oder Herd) aufstellen.
• Im Inneren diesem Lautsprecher herrschen potentiell
gefährliche Spannungen. Nicht versuchen, das Gerät zu
öffnen.EsenthältkeinevomBenutzerreparierbarenTeile.
Reparaturen dürfen nur von ausgebildetem
Kundenienstpersonal durchgeführt werden.
• Parareducir elriesgo de descargaeléctrica,desconecte de
la red el altoparlante antes de instalar el cable de
señalizacióndeinterfazdelasegnale.Vuelvaaconectarel
conductor flexible de alimentación solamente una vez
efectuadas todas las interconexiones de señalizatción.
• Conecteelaltoparlanteauntomacorrientebipolarytrifilar
con neutro de puesta a tierra. El tomacorriente debe estar
conectadoala proteccióndederivaciónapropiada (yasea
un fusible o un disyuntor). La conexión a cualquier otro
tipodetomacorrientepuedeconstituirpeligrodedescarga
eléctrica y violar los códigos eléctricos locales.
• No instale el altoparlante en lugares donde haya agua o
humedad excesiva.
• Nodeje queen elaltoparlante entre aguani ningúnobjeto
extraño. No ponga objetos con líquidos encima de la
unidad ni cerca de ella.
• Para reducir el riesgo de sobrecalentamiento, no exponga
la unidad a los rayos directos del sol ni la instale cerca de
artefactos que emiten calor, como estufas o cocinas.
• Estealtoparlante contiene niveles de voltajepeligrosos en
potencia.Nointentedesarmarlaunidad,puesnocontiene
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
priseprincipaledel’haut-parleur,avantd’installerlecâble
d’interface allant à l’audio. Ne rebrancher le bloc
d’alimentationqu’après avoireffectuétoutes lesconnections.
• Branchez l’haut-parleur dans une prise de courant à 3
dérivations (deux pôles et la terre). Cette prise doit être
munied’une protection adéquate(fusible ou coupe-circuit).
Le branchement dans tout autre genre de prise pourrait
entraîner un risque d’électrocution et peut constituer une
infraction à la réglementation locale concernant les
installations électriques.
• Nepas installerl’haut-parleur dansun endroit oùil ya 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
dégageant de la chaleur tels que radiateurs ou appareils
de chauffage.
• Ce haut-parleur contient des circuits haute tension
présentant un danger. Ne jamais essayer de le démonter.
Il n’y a aucun composant qui puisse être réparé par
l’utilisateur.Touteslesréparations doiventêtreeffectuées
par du personnel qualifié et agréé par le constructeur.


Rear Panel and Optional Mod les
The user panel and optional modules are described on page 5 of this guide.
User Panel with RMS option and standard Looping Audio Input Module.
Looping, Polarity, and Attenuating Input Module.
Summing Audio Input Module
On / Temp.
Summing Inputs
24VFan
-
+
Inputs
Limit
Earth /
Chassis
Case
220kΩ
1kΩ
Each
Each
GND Circuit 11
25kΩBalanced
+
-
33
22
Summing Audio Input
Push Push
High Limit LED Low Limit LED


(in inches)
Dimensions
Meyer Sound Laboratories, Inc.
2832 San Pablo Avenue
erkeley, California 94702
Telephone: 510 - 486 - 1166
FAX: 510 - 486 - 8356
E-mail: [email protected]
http://www.meyersound.com
Contact Information
16.5
22.4
16.5
22.4
UM-100P Front
16.5
9.99
UM-P Back
UM-1P Front
12.6
UM-P Top
52
13.8
16.9
ACInput
100-240V ~
50-60Hz 4A MAX
24VFan
-
+
Loop
Input
On/Temp.
Limit
Earth/
Chassis
Case
220k Ω
GNDCircuit 1
2
3
1
2
3
Looping Audio Input
Push
Network
Service
Wink
Reset
Activity
Remote Monitor System
UM-P Side
0