User`s Manual
Contents
1. in height is 2 units Rack 88 mm Do not position high gain audio equipment like preamplifiers or recorders just above or below the amplifier Despite the protections of the radiation device magnetic fields can induce hum in unscreened ancillary equipment Do not obstruct the entrance and exits of air for the cooling of the amplifier Any impediment to the free movement of air in the amplifier may cause a failure not covered by the warranty The amplifier use in an environment where the air is confined or polluted requires frequent internal cleaning smoke and dust particles accumulated inside the appliance can cause failures not covered by the warranty This cleaning should be done by qualified personnel Before any work on the wiring be sure to turn the control knobs fully counterclockwise and turn off the amplifier Only use good quality speaker cables unshielded Use good quality audio cables shielded for inputs A balanced connection is recommended to keep a signal without degradation Technical Specifications RMS Power per channel 4 Q Amplification Outputs THD S N Modes Crosstalk Input Level balanced 1 kHz Input Level max balanced 1 kHz Frequency Response Input Connectors Ouptut connectors Power Supply Dimensions L x D x H Net Weight 250 W Class H 4Q 70 V 100 V 0 1 1 kHz 3 dBv gt 95 dB DUAL MONO gt 60 dB 0 1 5 dBv 20 dBv 1 5 dBv L H Filter OUT 20 Hz 20kH2. AUDIO SE M POLE PA 4 250 d CHANNEL 4 0770 V 100 V POWER AMPLIFIER AUDIO EE PA 2 250 L O DE OT CH1 CH 2 A USER S MANUAL Index Tenen liens TN le s OIC rte Features CONMOIS ANG STINGS TT TEGCANIGAIS DECIICAMONS AAA Malfunctions aina sees te iki aa aata dayne als taa kat a Warranty 2 3 A NMSTANAROIMNS TMS sii te A MA 5 6 7 Important Safety Instructions CAUTION 5 RISK OF ELECTRIC SHOCK NOT OPEN WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN MOISTURE This symbol wherever used alerts you to the presence of un insulated and dangerous voltages AN within the product enclosure These are voltages that may be sufficient to constitute the risk of electric shock or death This symbol wherever used alerts you to important operating and maintenance instructions POWER SUPPLY Ensure that the insource voltage AC outlet matches the voltage rating of the product Failure to do so could result in damage to the product and possibly the user Unplug the product before electrical storms occur and when unused for long periods of time to reduce the risk of electric shock or fire EXTERNAL CONNECTION Always use proper ready made insulated mains cabling power cord Failure to do so could result in shock death or fire If in doubt seek advice from a registered electrician DO NOT REMOVE ANY COVERS Within the product are areas wher
3. e high voltages may present To reduce the risk of electric shock do not remove any covers unless the AC mains power cord is removed Covers should be removed by qualified service personnel only No user serviceable parts inside FUSE To prevent fire and damage to the product use only the recommended fuse type as indicated in this manual Do not short circuit the fuse holder Before replacing the fuse make sure that the product is OFF and disconnected from the AC outlet PROTECTIVE GROUND Before turning the unit on make sure that it is connected to Ground This is to prevent the risk of electric shock Never cut internal or external Ground wires Like wise never remove Ground wiring from the Protective Ground Terminal OPERATING SAFETY INSTRUCTIONS Read these instructions Follow all instructions Keep these instructions Do not discard Heed all warnings Only use attachments accessories specified by the manufacturer POWER CORD AND PLUG Do not tamper with the power cord or plug These are designed for your safety Do not remove Ground connections If the plug does not fit your AC outlet seek advice from a qualified electrician Protect the power cord and plug from any physical stress to avoid risk of electric shock Do not place heavy objects on the power cord This could cause electric shock or fire SERVICING Refer all servicing to qualified service personnel only Do not perform any servicing then those instructions contained within
4. ifier The 70 V or 100 V position reguires speakers eguipped with 70 V or 100 V line transformers and a parallel connection For these two modes the sum of the powers of the speakers must not exceed the nominal power of the amplifier For example it will not be possible to use more than 25 speakers 10 W on the same channel The selector must be activated when the power is turned off and disconnected from the speaker outputs 30 38 MONO DUAL In the case of a Mono signal for which two amplifier channels are required the switch must be set in MONO mode The signal of one of the inputs is automatically send the other which avoids an additional wiring For example for channels 1 and 2 connect the audio source to input 1 for channels 3 and 4 connect the source to input 3 For standard use meaning one signal per channel turn the switch in DUAL position 31 39 L H Switching on off function of a band pass filter for 70 V or 100 V mode This filter allows to eliminate any hum or background noise and protects the speakers 42 AC INPUT Power outlet Before any connections make sure that the power cable is not damaged The connection to the mains supply must have an earth connection The mains voltage supplied must conform with the electrical characteristics of the appliance see Chapter 5 Installations Hints In case of installation in cabinet or rack ensure the ventilation requirements The depth of the unit is 425 mm The dimensions
5. the L H filter Turn OFF the L H filter This device is warranted parts and labor against any manufacturing defects for a period of two years from the date of purchase by the first user Conditions 1 The unit has been installed and implemented by observing the safety instructions in this operating manual 2 The device was not diverted from its destination either voluntary or accidental and suffered no deterioration or modification other than those described here or explicitly authorized by AUDIOPOLE 3 All modifications or repairs have been carried out by an authorized service station 4 The defective product must be returned with the dealer who made the sale or to an authorized service Station with proof of purchase 5 The device was properly packaged to avoid damage in transport AUDIOPOLE 22 rue Edouard Buffard Z A C de la Charbonni re Mont vrain 77771 Marne la Vall e Cedex 4 France Tel 33 0 1 60 54 32 00 Fax 33 0 1 60 54 31 90 www audiopole pa fr
6. this User s Manual DISPOSAL This symbol indicates that the disposal of this product is submitted to local regulations Please contact your local dealer OO Introduction Thank you for purchasing Audiopole PA 4 250 This amplifier has 4 independents channels of 250 W each which can drive loads of 4 Ohms 70 V and 100 V for Public Address applications Unlike most 100 V amplifiers PA 4 250 does not use output transformers which allows to power the speakers with a high guality signal In addition Class H technology brings a gain weight and space while offering high yield performances One of the main applications of the PA 4 250 is the amplification of independent zones using low impedance outputs for near field and 100 V line for long distance speakers The device concentrates all the settings on the rear panel and control leds on the front panel it allows full monitoring of the amplifier Status Features e 4x 250W e 40 70 V or 100 V outputs e Class H amplification e No output transformers e 2 operating modes MONO or DUAL Signal presence indicators e Workload indicators 4 Q 70 V and 100 V Protection indicators s Band pass filter s Balanced XLR inputs e Output screw terminals Two unit rack mount 2U e 98kg Controls and Settings Front Panel AUDIO EE POLE PA 4 250 1J 911181100 21 11021085 16 18 20 23 wW We 12 14 17 19 1 6 11 16 SIG Individual signal indica
7. tor The intensity of the LEDs varies depending on the level of the input signal 2 7 12 17 40 Individual 4 Q output indicator See paragraph 29 32 37 40 3 8 13 18 70V Individual 70 V output indicator See paragraph 29 32 37 40 4 9 14 19 100V Individual 100 V output indicator See paragraph 29 32 37 40 5 10 15 20 PRO Individual protection indicator PA 4 250 is equipped with a safety start function muting the amplifier for a few seconds after the power is switched on This delay is visible through the Led which lights up then shuts off as soon as the amplifier becomes operational If the led of one or more channels stays on after few seconds or if it illuminates during normal using of the amplifier it means that a problem has been detected The channel concerned intersecting automatically to protect amplification circuits and equipment connected to the device 11 POWER Turn On Off Fonctions et reglages Back Panel 22 23 24 25 26 28 29 30 81 32 B3 34 35 Be 37 38 39 140 41 22 23 26 27 INPUT XLR balanced inputs 24 25 34 35 OUTPUT speaker outputs on screw terminals Check the tightness of the cables before use 28 33 36 41 Levels Adjust the levels of the input signals 29 32 37 40 Output selector Position 4 Q allows the use of standard speakers Be careful do not use loads less than 4 Q at risk of damaging the ampl
8. z 1 dB L H Filter IN 200 Hz 10 kHz 1 dB XLR balanced screw terminals 115 230 V 50 60 Hz 483 x 425 x 88 5 mm 9 8 kg Malfunctions some occasional problems are very often linked to handling errors By checking the points listed below it will pe possible to find without difficulty solutions to potential malfunctions If problems persist consult a dealer or an authorized AUDIOPOLE service center No power No sound on one or more channels Saturated sound Hum Noise 70 V and 100 V lines Lack of bass and treble high power Warranty e The mains cable is not correctly connected or is faulty e The power switch is not pressed e The volume is at a minimum e Speakers are not connected e Une or more input signals are not connected or their level is at Zero e The MONO DUAL switch is positioned improperly e The PRO indicator is on Inappropriate input signal level Bad ground or faulty power supply HP cables too close from equipment radiating neon lighting power supply Engaged L H filter e Reconnect the power cord e Change the cord e Turn the switch ON e Adjust the volume e Connect speakers e Connect inputs and adjust the levels of the other equipment e Modify selection e Check HP lines and connections polarity Adjust levels and gains and the equalization of the other equipment Check the mains voltage Keep the cables far from radiating sources engage
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