Black Box Secure Device Servers Marine Safety Devices User Manual
Contents
1. 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 The 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 The 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 There is some sound but the On Temp LED turns from green to red This occurs when the heatsink temperature reaches 852. 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 and this condition occurs frequently contact Meyer 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 There is no sound the On Temp LED Is dim or off and the power supply fan is on high speed This extremely rare event occurs when the power supply overheats causing a 1 2 minute interruption in operation 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 10 A Safety Summary IN English To reduce the risk of electric shock disconnect the loud speaker from the AC mains before installing audio cable Reconnect th
3. aneinenanderen Steckdosentyp kann zu Stromschl gen f hren und gegen die rtlichen Vorschriften versto en Der Lautsprecher nicht an einem Ort aufstellen an dem sie mit Wasser oder berm ig hoher Luftfeuchtigkeit in Ber hrung kommen k nnte Darauf achten da weder Wasser noch Fremdk rper in das Innere den Lautsprecher eindringen Keine Objekte die Fl ssigkeit enthalten auf oder neben die unterbrechungsfreie Stromversorgung stellen Um ein berhitzen dem Lautsprecher zu verhindern das Ger t vor direkter Sonneneinstrahlung fernhalten und nicht in der N he von w rmeabstrahlenden Haushaltsger ten z B Heizger t oder Herd aufstellen Im Inneren diesem Lautsprecher herrschen potentiell gef hrliche Spannungen Nicht versuchen das Ger t zu ffnen Es enth lt keine vom Benutzer reparierbaren Teile Reparaturen d rfen nur von ausgebildetem Kundenienstpersonal durchgef hrt werden Francais Pour r duire le risque d lectrocution d brancher la prise principale de l haut parleur avant d installer le cable d interface allant a l audio Ne rebrancher le bloc d alimentation qu apres avoir effectu toutes les connections Branchez l haut parleur dans une prise de courant a 3 d rivations deux p les et la terre Cette prise doit tre munie d une protection ad quate fusible ou coupe circuit Le branchement dans tout autre genre de prise pourrait entrainer un risque d lectrocution et peut con
4. 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 connector with a 10 kQ balanced input impedance wired with the following convention Pin 1 220 KQ to chassis and earth ground ESD clamped Pin2 Signal Differential Inputs Pin3 Et en F Case Earth AC ground and chassis Pins 2 and 3 carry the input as a differential signal Use standard audio cables with XLR connectors for balanced 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 kQ looping 20 UM Ps produces a balanced input impedance of 500 With a 150 audio source the 500Q load results in only a 2 28 dB loss Looping Audio Input Module This standard module uses a balanced female XLR connector for audio input and a male XLR loop connector 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 Summing Audio Input Module This module has a balanced female XLR connector for audio input but has instead of a loop connector a second female XLR connector that functions as a summing input Applying a s
5. M P 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 functions 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 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 Current Requirements 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 15A branch 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 breake
6. ODOOODOODOOOODOODOODOOOODOODOODOO 62 2 O On 26 O SO gt so 20 os Oe 29 oe O OS 02 O O 5 Sen O so oe 06 UX RATING LABEL A W 30 076 069 01 REVISION A 112 9 Rain Hood G nn a X Rain Hood screw screw oS Oe O oo 20 O 30 OS Xe oo O OS 9 O GE OR O OS O2 O O so 9 O ne SE 06 SS User Panel with RMS option and standard Looping Audio Input Module High Limit LED Low Limit LED 10k Q Balanced 1 2 3 2 mm zn Push Push 220k Q KE SSES 24VFan ar Chassis gel R Loop Input Polarity On Temp Looping Polarity and Attenuating Input Module High Limit LED Low Limit LED 25kQ Balanced Summing Audio Input 1kQ Each 2 2 3 3 Earth Chassis Ce BR Inputs Summing Inputs n Temp Summing Audio Input Module 11 12 Dimensions in inches 16 5 UM 100P Front UM 1P Front UM P Side UM P Back A Meyer Mii sound Contact Information Meyer Sound Laboratories Inc 2832 San Pablo Avenue Berkeley California 94702 Telephone 510 486 1166 FAX 510 486 8356 E mail techsupport meyersound com http www meyersound com
7. Uf Meyer Sound Operating Instructions UM P Series UM 1P and UM 100P Self Powered Loudspeakers Serial Numbers 981000 and above Copyright 1997 Meyer Sound Laboratories Inc All rights reserved Part 05 079 008 01 Rev B Contents band ge Ce L t ON ea 3 Verifying Driver Polarity c ssccssecsseeeeeeeeees 8 AG POWER nee 4 Troubleshooting nennen nnn 0 8 The Modular Rear Panel Rennen 5 Safety SUMMArY cccccccseccseeesseeeseeesseeeseseageess 11 Amplification Limiting and Cooling System 6 Rear Panel Connectors s ssssssssssersessrrrerrrrrn 12 Example Application ccccccsseessseeeeseeeeeseesseeeees 7 Dimensions uneassnseannennnennnnnnnnonnnnnnnnnnennnnennnnn 12 Symbols Used These symbols indicate important safety or operating features in this booklet and on the chassis N K 2 Dangerous voltages Important operating p h q risk of electric shock instructions Frame or chassis IOI Barh SUN Pour indiquer les risques r sultant de tensions dangereuses Pour indequer important instructions Masse ch ssis Terre de protection Zu wichtige betriebs anweisung und unter Rahmen oder chassis Die schutzerde haltsanweisung zeigen Zu die gefahren von gef hrliche spanning zeigen Para indicar importante funcionar y mantenimiento Armadura o chassis Tierra proteccionista instrucciones Para indicar azares provengo de peligroso voltajes Declaration of Conformity Ac
8. ard 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 dB 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 dB points because they indicate very different results the 10 dB points yield a wider angle Previous technologies produced horns whose beamwidth varied over the operating frequency range These horns also displayed nonuniform frequency response within and significant side lobe energy outside their beamwidth 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 36 octave respec tively The UM P horns exhibit constant Q the beamwidth remains consistent across the horn s operating frequency range in both the vertical and horizontal planes Both horns share the following remarkable attributes e uniform frequency response within the beamwidth e rapid and uniform amplitude attenuation for all frequencies outside the beamwidth e minimal side lobes AC Power The UM P uses a PowerCon locking 3 pole AC mains connector that prevents inadvertent disconn
9. 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 1P Top View UM 1P Front View UM 100P Side View UM 100P Top View UM 100P Front 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 disassembled it 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 ampl
10. cording to ISO IEC Guide and EN 45014 The Manufacturer Declares that the product Meyer Sound Laboratories Inc Product Name UM IP UM 100P 2832 San Pablo Avenue Product Options All Berkeley California 94702 2204 USA Environmental Specifications for Conforms to the following Product Specifications Meyer Sound Electronics Products Safety EN60065 1994 Operating temperature 0 to 45 EMC EN55 103 1 emmission Nonoperating temperature lt 40 C or gt 75 C EN55103 2 immunity iditv to 95 at 35 The product herewith complies with the requirements i i to 4600 m 15 000 ft of the Low Voltage Directive 73 23 EEC and to 6300 m 25 000 ft the EMC Directive 89 336 EEC 30g 11 msec half sine on each of 6 sides Office of Quality Manager ibration 10 Hz to 55 Hz 0 010m Berkeley California USA peak to peak excursion December 23 1997 Made by Meyer Sound Laboratories Berkeley California USA LISTED European Office Meyer Sound Lab GmbH 3K59 C Carl Zeiss Strasse 13 COMMERCIAL 56751 Polch Germany AUDIO SYSTEM Introduction The Integrated Design The Meyer UM P Series UM 100P UM 1P self powered stage monitors are composed of e one 12 inchcone driver and one 3 inch diaphragm compression driver e phase corrected optimized control electronics e a two channel amplifier 350 Wrms ch The drivers control electronics and amplifier are inte grated into a compact enclosure The UM P Series
11. e power cord only after making all signal connections Connect the loudspeaker to a two pole three wire grounding mains receptacle The receptacle must be connected to a fuse or circuit breaker Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes Do not install the loudspeaker in wet or humid locations without using weather protection equipment from Meyer Sound Do not allow water or any foreign object to get inside the loudspeaker Do not put objects containing liquid on or near the unit To reduce the risk of overheating the loudspeaker avoid exposing it to direct sunlight Do not install the unit near heat emitting appliances such as a room heater or stove This loudspeaker contains potentially hazardous voltages Do not attempt to disassemble the unit The unit contains no user serviceable parts Repairs should be performed only by factory trained service personnel Deutsch 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 aller Signalverbindungen wieder einstecken Der Lautsprecher an eine geerdete zweipolige Dreiphasen Netzsteckdose anschlie en Die Steckdose mu mit einem geeigneten Abzweigschutz Sicherung oder Leistungsschalter verbunden sein Der Anschlu der unterbrechungsfreien Stromversorgung
12. ection The unit must have the correct power cord for the AC power in the area in which it will be used Engagement Separation When AC power is applied to the UM P an Intelligent AC supply automatically selects the correct operating voltage allowing the UM P to be used internationally without manually setting voltage switches The Intelligent AC supply performs the following protective functions to compensate for hostile conditions on the AC mains e suppresses high voltage transients up to several kilovolts e filters EMI radio frequencies and noise present on the AC line e sustains operation during low voltage periods which minimizes audio discontinuity e 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 Requirements 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 audio signals If the On Temp LED does not illuminate or the system does not respond to audio input after ten seconds consult the Troubleshooting section The U
13. er 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 Meyer Sound for more information 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 mentary power MOSFET output stages class AB 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 6 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 e Increasing the input level will not increase the volume e The system distorts due to clipping and nonlinear driver operation While the UM P limiters fully protect the system under overload conditions and exhibits smooth sonic charac teris
14. he 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 The On Temp 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 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 reconnecting the audio input and increase the level slowly to avoid a sudden blast of sound 5 Ifpossible monitor the audio source with headphones 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 the noise persists the problem is 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 reconnecting the audio input and increase the level slowly to avoid a sudden blast of sound
15. ignal to one of the inputs results in a normal signal level Utilizing both summing inputs creates a correctly 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 5 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 Mey
16. irectly 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 Supply 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 other Meyer Sound products contact Meyer Sound Technical 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
17. 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 tween neighboring monitors The UM 100P horn s wide 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 e The amplifier is optimized for the system providing substantial power without endangering the drivers e The integrated design simplifies setup and in stallation eliminates amp racks and extends the durability and reliability of the loudspeaker e 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 stand
18. itude Broadband cancellation decreased overall level in dicates polarity reversal An Since polarity reversal causes excessive driver ex cursion at high source levels use moderate levels when conducting these tests UM P Reference 3 Feet UM P Under Test 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 and The High Frequency Driver Replacement Procedure for the UM 1P 100P The On Temp 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 t
19. ode If the colors referred to in the diagram don t correspond to the terminals in your plug use the following guide lines e Connect the blue wire to the terminal marked with an N or colored black e Connect the brown wire to the terminal marked with an L or colored red e Connect the green and yellow wire to the terminal marked with an E or or colored green or green and yellow Safety Issues Do not use a ground lifting adapter or cut the AC cable ground pin A Keep all liquids away from the UM P to avoid hazards from electrical shock A 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 A blank plate covers the bottom slot if RMS is not installed For drawings of these modules see page 13 Audio Input There are three interchangeable Audio Input and Control Modules with optimized connectors and controls for different applications
20. r and cable specifica tions The maximum continuous RMS current is the 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 The maximum instantaneous peak current during 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 Vpk Ipk x Rtotal cable drop Use the table below as a guide to select cables and circuit breakers with appropriate ratings for your operating voltage UM P Current Ratings Max Continuous RMS Sea Max Burst RMS u 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 ae brown hot neutral yellow green earth ground chassis AC cable color c
21. stituer une infraction a la r glementation locale concernant les installations lectriques Ne pas installer l haut parleur dans un endroit o il y ade l eau ou une humidit excessive Ne pas laisser de l eau ou tout objet p n trer dans l haut parleur Ne pas placer de r cipients contenant un liquide sur cet appareil ni a proximit de celui ci Pour viter une surchauffe de l haut parleur conserver la a l abri du soleil Ne pas installer a proximit d appareils d gageant de la chaleur tels que radiateurs ou appareils de chauffage Ce haut parleur contient des circuits haute tension pr sentant un danger Ne jamais essayer de le d monter Il nv a aucun composant qui puisse tre r par par l utilisateur Toutes les r parations doivent tre effectu es par du personnel qualifi et agr par le constructeur Espa ol Para reducir el riesgo de descarga el ctrica desconecte de la red el altoparlante antes de instalar el cable de se alizaci n de interfaz de la segnale Vuelva a conectar el conductor flexible de alimentaci n solamente una vez efectuadas todas las interconexiones de se alizatci n Conecte el altoparlante a un tomacorriente bipolar y trifilar con neutro de puesta a tierra El tomacorriente debe estar conectado a la protecci n de derivaci n apropiada ya sea un fusible o un disyuntor La conexi n a cualquier otro tipo de tomacorriente puede constituir peligro de descarga el ctrica y
22. tics 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 Iemp and the limiter threshold is lowered to a safe level to prevent the amplifiers from overheat ing Under high temperature conditions the limiter threshold is reduced to6 dB When the heatsink tmeperature decreases to 75 C 167 F the On Temp LED changes from red to green and the limiter threshold returns to normal N 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 d
23. violar los c digos el ctricos locales No instale el altoparlante en lugares donde haya agua o humedad excesiva No deje que en el altoparlante entre agua ni ning n objeto extra o No ponga objetos con l quidos encima de la unidad ni cerca de ella Para reducir el riesgo de sobrecalentamiento no exponga la unidad a los rayos directos del sol ni la instale cerca de artefactos que emiten calor como estufas o cocinas Este altoparlante contiene niveles de voltaje peligrosos en potencia No intente desarmar la unidad pues no contiene piezas que puedan ser repardas por el usuario Las reparaciones deben efectuarse nicamente por parte del personal de mantenimiento capacitado en la f brica Rear Panel and Optional Modules The user panel and optional modules are described on page 5 of this guide Fan Connectors Rain Hood 8 Rain Hood screw 7 screw Looping Audio Input 2 3 Hi Limit LED Female XLR Input 27 PAVEN Low Limit LED Chassis Be X LH O S On Temp LED Loop l RMS LEDs O OO Service 00000 ID O Remote Monitor System RMS Network CAUTION See instruction manual Uj Meyer ach Connectors Ab ATTENTION Voir le cahier d instruction Mk lie Sound 100 240V DOODODOODOODOODOOOODOODOODODOOODOOODOO Ge DOOODOODOOOOOODOOOOOODOOOOODOOOOOO OOO00000000000000000000000000000 DODOODOODODODOODOODOODOOOODDOODOOODOOODO PowerCon Locking 00000000000000000000000000000000 AC Mains Inlet DO
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