User Manual
Contents
1. AUDAC www audac eu Index Introduction C0M12 24 Block Diagram Precautions Safety requirements Caution servicing EC Declaration of Conformity Waste of Electrical and Electronic Equipment WEEE Caution Chapter 1 Pin connections and connectors Connection standards Chapter 2 Front amp rear panel Front panel overview Front panel description Rear panel overview Rear panel description Chapter 3 Setting up the system Connecting the loudspeakers Connecting the audio sources Priorities Phantom power Using the priority mute contact Pre announcement chime selection Chapter 4 Additional information Technical specifications Notes co co A AUDAC gt Introduction Public address amplifiers The COM12 COM24 public address amplifier was developed as an easy to use flexible solution for multifunctional use During the development of the COM12 COM24 the AUDAC engineers wanted to achieve fourn goals Delivering a flexible audio solution to control multiple functions Easy to use Excellent sound quality Modern and advanced design The COM12 COM24 has 2 stereo unbalanced line level inputs 2 mono balanced line level inputs 2 mono balanced line level inputs with priority settings and phantom power 5 high impedance 100V mono output zones 1 low impedance 4ohm mono output zone a link input and output an amp input and pre amp output a remote microphone input and the possib2. Ui 4 lu WO o teroza Lwowie Precautions READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY ALWAYS KEEP THESE INSTRUCTIONS NEVER THROW THEM AWAY ALWAYS HANDLE THIS UNIT WITH CARE HEED ALL WARNINGS FOLLOW ALL INSTRUCTIONS NEVER EXPOSE THIS EQUIPMENT TO RAIN MOISTURE ANY DRIPPING OR SPLASHING LIQUID AND NEVER PLACE AN OBJECT FILLED WITH LIQUID ON TOP OF THIS DEVICE DO NOT PLACE THIS UNIT IN AN ENCLOSED ENVIRONMENT SUCH AS A BOOKSHELF OR CLOSET ENSURE THERE IS ADEQUATE VENTILATION TO COOL THE UNIT DO NOT BLOCK THE VENTILATION OPENINGS DO NOT STICK ANY OBJECTS THROUGH THE VENTILATION OPENINGS DO NOT INSTALL THIS UNIT NEAR ANY HEAT SOURCES SUCH AS RADIATORS OR OTHER APPARATUS THAT PRODUCE HEAT DO NOT PLACE THIS UNIT IN ENVIRONMENTS WHICH CONTAIN HIGH LEVELS OF DUST HEAT MOISTURE OR VIBRATION THIS UNIT IS DEVELOPED FOR INDOOR USE ONLY DO NOT USE IT OUTDOORS PLACE THE UNIT ON A STABLE BASE OR MOUNT IT IN A STABLE RACK ONLY USE ATTACHMENTS amp ACCESSORIES SPECIFIED BY THE MANUFACTURER UNPLUG THIS APPARATUS DURING LIGHTNING STORMS OR WHEN UNUSED FOR LONG PERIODS OF TIME ONLY CONNECT THIS UNIT TO A MAINS SOCKET OUTLET WITH PROTECTIVE EARTHING CONNECTION CAUTION SERVICING This product contains no user serviceable parts Refer all servicing to qualified service personnel Do not perform any servicing unless you are qualified to EC DECLARATION
3. the input level controls the individual level for each connected input can be set This way multiple inputs can be mixed with each other between zero and maximum level Chime When pressing the chime button the selected chime tone as pre announcement for paging will be played once identical as a contact closure on remote mic SW terminal on rear panel How the selection for this pre announcement tone can be done is described in a later chapter of this instruction manual Two band tone control Using the bass and treble rotary dials the overall system frequency response can be adjusted within a range of 12 dB The level will be increased while clockwise rotating while counter clockwise will result in a level decrease In center position both dials are set to neutral level Master volume control Using the master volume control the overal system volume will be adjusted in a range between minimum and maximum level LED indicators The current system operation is indicated on the 7 digit LED bar graph The bottom LED is the power indicator which illuminates in blue colour when the system is switched on The 5 LED s above monitor the current output level within a range of 20 dB and 3 dB while the upper protect LED red illuminates when the system is in protect mode some failure overload on the outputs occured All outputs will be muted when this LED illuminates 11 Zone 1 5 output switches The different connecte
4. 2 x Balanced mic line 6 dB 50 dB 6 3 mm jack Priority mic input 4 pin terminal block 3 5 mm Priority line input 5 pin terminal block 3 5 mm 4Q 22V 100 Volt 83 30 COM12 41 70 C0M24 70 Volt 41 70 COM12 20 80 COM24 25 Volt 5 20 COM12 2 6Q COM24 2 pin terminal block 40 5 08 mm 10 pin terminal block 100V 5 08 mm Power Protect 20 dB 10 dB 4 dB 0 dB 3 dB DC Short Circuit Over Heating Over Load Limiter Cooling system Amplifier technology Power supply COM12 COM24 Type Range Convection cooled Class A B Class D Transformer 230 V AC 50 60 Hz AUDAC 19 Notes 2 AUDAC
5. OF CONFORMITY This product conforms to all the essential requirements and further relevant specifications described in following directives 2004 108 EC and 2006 95 EC LVD AUDAC 7 8 CAUTION The symbols shown are internationally recognized symbols that warn about potentional WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT WEEE The WEEE marking indicates that this product should not be disposed with regular houshold waste at the end of its life cycle This regulation is created to prevent any possible harm to the environment or human health This product is developed and manufactured with high quality materials and components which can be recycled and or reused Please dispose this product at your local collection point or recycling centre for electrical and electronic waste This will make sure that it will be recycled on an environmentally friendly manner and will help to protect the environment in which we all live hazards of electrical products The lightning flash with arrowpoint in an equilateral triangle means that the unit contains dangerous voltages The exclamation point in an equilateral triangle indicates that it is necessary for the user to refer to the users manual CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN These symbols warn that there are no user serviceable parts inside the unit Do not open the unit Do not attempt to service the unit yourself Refer all servicing to qualified personn
6. al equalizers amp effect processors The pre amp out is connected after the pre amplifier section of the COM amplifier and the amp in connection is inserted before the power amplifier section When adding an external equalizer or effect processor between these connections the internal 2 band tone control will be overruled Link in amp link out connections 6 3 mm jack connectors These connections can be used when expanding your system by adding a second COM amplifier in your system Connect the link in connection of the second amplifier with the link out of the master amplifier in your setup Balanced line mic inputs 1 amp 2 combination 6 3 mm jack amp XLR Channels 1 and 2 are implemented using combination connectors accepting both XLR and 6 3 mm jack plugs The gain for these inputs is adjustable within a range of 6 dB and 50 dB which can accept either microphone or line level signals A priority switch on top of both inputs will mute all other channels when a signal is present on the connected microphones inputs Phantom power switches enable 15 Volts phantom power for pow ering condenser microphones when connected Switch 1 will enable phantom power to channel 1 while switch 2 enables phantom power to channels 2 3 and 4 simultaneously Balanced line mic inputs 3 amp 4 XLR Channels 3 and 4 are implemented using XLR connectors The gain for these inputs is adjustable within a range of 6 dB a
7. c muting is required at occasion of a fire alarm The emergency system contact outputs can be linked to this contact input real EA rm Kalte H C G 6 Pre announcement chime selection A pre announcement chime will be heard when the Chime button on the front panel is pressed or a contact closure between G and SW terminals of the remote mic input is made This pre announcement chime can be selected out of four different tones whereof one siren and three chime tones This selection can be done through changing jumper settings internally in the device es e Denis C714 AUDAC Chapter 4 Additional information Technical specifications RMS Output Power COM12 1 kHz THD 196 COM24 Frequency response Signal to Noise Ratio THD N Common Mode Rejection Crosstalk Inputs Channel 1 4 Type Sensitivity Connectors Phantom power Priority Channel 5 6 Type Sensitivity Connectors Channel 5 6 Type Sensitivity Connectors Remote mic Type Connectors Tele paging Type Connectors Outputs Voltage Impedance Connectors Indicators Protection AUDAC 120 Watt 240 Watt 20 Hz 20 kHz 90 dB lt 0 5 70 dB 70 dB 4 x Balanced mic line 6 dB 50 dB 2 x XLR Jack combo amp 2 x XLR 15 V DC 4x Yes 2x Channel 1 amp 2 2 x Stereo line 14 dB 30 dB RCA
8. ckwise to their minimum setting and put the gain control trimmers on the rear panel in a central position Then connect all the available sources to their corresponing channels and switch on the power of the amplifier and all the connected audio sources The power and protection LED will light up now After approximately five seconds the protection LED will stop illuminating a click will be heard when this occurs Apply a signal to the inputs as it will be used in normal operation circumstances and turn the channel input level control up about 50 Slowly raise the master volume control till a certain level until the desired sound level is achieved Depending of the output level of the connected music sources the input gain might need adjustment Adjust these trimmers on the rear panel until the desired level is achieved For the best signal to noise ratio the COM series amplifier should run in normal circumstances with the master level control near maximum position and the peak indicator 3 dB of the VU meter on front should light occasionally but not frequently during peak levels If the signal is too loud or distorted use the input level controls to attenuate as necessary to achiee the desired speaker level 3 Priorities Channel 1 and 2 contain a priority switch whereby the priorities for the corresponding channels can be enabled or disabled When the priority is switched ON other input channels will be muted in case a signal i
9. d loudspeaker lines 1 5 can be switched on and off by pressing the switches with the corresponding numbers When the All switch is pressed all loudspeaker outputs will be enabled Rear panel overview Rear panel description The rear panel for both COM12 and COM24 is identical and contains all connection and configuration controls Configuration controls include the settings which should be made once when setting up the system and doesn t have to be changed by the user afterwards Power inlet The AC power inlet is implemented on the COM12 24 series amplifiers using a fixed lead with fixed plug depending of the amplifier region CEE 7 7 for EU type G for UK A fuse holder with mains fuse is located on top of the power inlet When replacing the fuse make sure the replacement matches the specifications of the original fuse T2AL 250V for COM12 amp T4AL 250V for COM24 Loudspeaker output connections Terminal block connectors Output connections for both low impedance and constant voltage distributed audio systems are provided The low impedance loudspeaker output is connected using a 2 pin terminal block while different zone 1 5 outputs are provided on a 10 pin terminal block connector More information about loudspeaker output connections is described in a further chapter of this instruction manual Amp in amp pre amp out connections 6 3 mm jack connectors These connections can be used for connecting extern
10. el Opening the chassis for any reason will void the manufacturer s warranty Do not get the unit wet If liquid is spilled on the unit shut it off immediately and take it to a dealer for service Disconnect the unit during storms to prevent damage AUDAC Chapter 1 Pin connections and connectors CONNECTION STANDARDS The in and output connections for AUDAC audio equipment are performed corresponding to international wiring standards for professional audio equipment RCA Cinch For unbalanced line input connections NE Tip Signal Sleeve Ground White Left Red Right XLR For balanced signal input connections Pin 1 Ground Pin 2 Signal Pin 3 Signal 6 3 mm 1 4 balanced Jack For balanced line in amp output connections gt Tip Signal Ring Signal Sleeve Ground 6 3 mm 1 4 unbalanced Jack For unbalanced line in amp output connections gt Signal Sleeve Ground AUDAC Chapter 2 Front amp rear panel Front panel overview Front panel description The front panel for both COM12 and COM24 amplifiers is identical and enables you to control the level for every input and the overal output volume A two band tone control is provided for the main output allowing adjustment of the overal system frequency response while zone output switches allows enabling disabling of the different speaker zone outputs Input level controls Using
11. ility to connect a telephone pager unit The COM12 COM24 can be used in commercial applications such as restaurants hotels shops warehouses professional offices public buildings A simple example when installed in a shop you could connect a tuner to play your favorite radiostation a microphone to make announcements a telephone pager and off course the doorbell of the shop AUDAC r aolvaaao L J NOL pte E om 31034 E E Adans 1 Tj Hom xa 1ndino anoz T ono en 401237195 1 4 10193135 noe ANY 3NOZ 179170 lt 1 INNOVA inaino indino 102000 oloatoua eZ un mo vanos E X d ww E ALONG m Tivmuon Tana nan ano WE m 04 1n4Onid ALONG 1 00000 apos epe ano oo TaAan indNi Bi l A EN
12. loudspeaker with a minimum impedance load of 4 ohms that is 4 ohms or greater can be used OUTPUT 1 1 1 1 OR 1 1 1 Example diagram low impedance connections For operating using constant voltage 100V 70V audio distribution systems the positive output should be connected to the positive terminal of the loudspeakers while the negative terminal of the speaker should be connected to the COM ground terminal of the amplifier 4 AUDAC OUTPUT Hi Z Lo Z Example diagram constant voltage connections The constant voltage output is standard set to 100 Volts but can be adjusted to 70 Volts or 25 Volts depending of the country requirements These adjustments can be made through re plugging internal transformer wires on the output selection PCB including the zone selection switches on front of the amplifier Following image shows which tranformers wires should be connected to the related terminal for the corresponding voltages T10 T11 T12 T13 100v BLACK wire 70V BLACK wire 25V YELLOW wire REDwire GREEN wire BLACK wire AUDAC 5 2 Connecting the audio sources The next step is making the signal input connections Depending of the type connection and output level of the available audio sources they should be plugged into the matching channel connection Before connecting turn all the channel input and master colume controls on the front panel of the amplifier fully counterclo
13. nd 50 dB which can accept either microphone or line level signals Unbalanced line balanced mic inputs 5 amp 6 RCA amp 6 3 mm jack Channels 5 and 6 are implemented using both RCA and 6 3 mm jack connections Selection can be made whether a stereo line input is connected using RCA connections or a microphone is connected using 6 3 mm jack connections The gain for the line RCA input is adjustable within a range of 14 and 30 dB while the gain for the mic 6 3 mm jack input is adjustable within a range of 6 and 50 dB Remote mic Terminal block A remote paging microphone can be connected to this 4 pin terminal block connector while the input sensitivity can be adjusted using the trim potentiometer located above it This remote microphone input has priority over other inputs More details regarding pri orities are described in a further chapter of this manual The balanced input microphone connections should be made to the H Hot or Signal C Cold or Signal and G Ground terminals Using the SW terminal a pre announcement chime will be played when a contact closure is made with the G Ground terminal Tele paging Terminal block The amplifier can be connected to any business telecom system using the tele paging input allowing announcements to be made from any handset It is a line level input with priority to be connected to the line output of the telecom system Balanced input connec
14. s present on the corresponding input a PRIORITY In addition to the priority muting on channels 1 and 2 some priorities are available which are always active They are set in four different levels in the following order 1 Chime amp tele paging highest priority Remote mic Channels 1 and 2 priority enabling by switch 2 3 4 Channels 3 to 6 no priority If a tele paging call occurs or the chime switch is pressed all other inputs are muted If a signal is present on the remote mic input channels 1 to 6 will be muted Signals with the same priority level will stay on simultaneously 4 Phantom power Channel 1 to 4 contain the possibility for supplying 15 Volts phantom power for powering condenser microphones Enabling of the phantom power can be done by the switches located above channel 1 amp 2 connections The first switch is only effective on channel 1 while the second switch enables phantom power for channels 2 to 4 AUDAC 5 Using the priority mute contact A priority mute contact connection is implemented along the tele paging input This input allows complete muting of background music at presence of a contact closure between both terminals It has the same priority level as the tele paging input meaning that all inputs except tele paging and chime will be muted This contact is convenient for situations where a for example a separate emergency system is installed and complete background musi
15. tions should be made to the H Hot or Signal C Cold or Signal and G Ground terminals System muting except tele paging can be achieved by a contact closure between the EXT MUTE contacts This can be useful for overal system muting in situations where a fire alarm or other priority system has a contact output for muting background music systems Music on hold Terminal block The music on hold connection allows the COM amplifiers being used in combination with a business telephone system having background music from an external source when the call is placed on hold The signal inserted on channel 6 EXT MOH will be available on this output The level can be adjusted using the trimmer located on top of it AUDAC 1 Chapter 3 Setting up the system ATTENTION Make sure the power of the device is turned OFF before any connections or wiring adjustments are made Disregarding this rule can lead to permanent damage of the equipment 1 Connecting the loudspeakers The loudspeakers should be connected to the euro terminal block connectors on the back panel of the device First the decision should be made which kind of loudspeakers will be used between low impedance 4 Ohm or constant voltage 100V 70V depending on the projects requirements It is only possible to use one either constant voltage or low impedance of both options at a time For operating using the low impedance 4 ohm output any
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