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USER'S MANUAL

1. LS 20Hz 50Hz 100Hz 200Hz 500Hz 1kHz 2kHz SkHz 10kHz 20kHz The following table details the type of filters that can be selected for each of the PEQ s 5 bands and their parameters 22 TECHNOLOGY aS aRT TYPE PC260 TYPE PRONET FREQ GAIN SHAPE 15 6 Hz 22 627 KHz 4 15dB Q 28 5 0 4 oct 0 05 3 0 Q 28 5 0 4 oct 0 05 3 0 Noc Non iem zemke T loss Sh ism zemkm C losa Sh 1248 001 156He 22007KHe s Sheva 757 TORR mae Wigh Sh 6d oct 156H2 22007KHe s Tan Sh atro 156H2 22007KHe si ED azsa os 3 30 0 35 Bandpass Bandpass i56Hz z262k amp Q 285 04 oct 005 30 esp Res Mighpass 1582 757 03008 _ Alpi JAlipsss st ord 156H2 22607KHe Taan 3 ipi Allpass 2nd ord 156H2 22007KHz 06 33008 TYPE PC260 TYPE PRONET FREQ GAIN SHAPE DEO ee PG DW DATA PUSH SELECT DEQ dynamic equalizer To access the first page of the dynamic EQ section press the DEQ button and then the EDIT e button of the input you want to edit Push the DATA knob to select the parameter to edit and rotate the knob to adjust it Use PG UP and PG DW buttons for scrolling the pag
2. 20Hz S Hz 100Hz 200Hz 500 2 2kHz SkHz 10kHz 20kHz Res High pass A resonance high pass filter has two parameters frequency and Q This is a high pass filter with 12dB slope and it can be used alone or in conjuction with a xover filter using the variable Q to model the response in the cut off frequency range The graph shows the response at 1KHz Q at min or max value 20Hz S Hz 100Hz 200Hz 500 2 1kHz 2kHz SkHz 10kHz 20kHz All pass 1st An all pass first order filter introducesa me phase shift that gradually changes from 180 above as the centre frequency to the specificed value at the centre frequency tending towards 0 below the centre frequency This filter can be used to shape the phase behaviuor of a specified output The graph shows the phase response centered at 1KHz at 45 steps All pass 2nd An all pass second order filter affects nao the frequency at which the phase effectively flips 3 180 and the speed using the 0 parameter at which this transition occurs This filter can be used to shape the phase behavior of a specified output The graph shows the phase response centered at 1KHz with 0 35 0 70 3 05 Q steps
3. PROEL 260 digital loudspeaker controller USER S MANUAL ENGLISH www proel com FCC COMPLIANCE 4 WARNING 4 SAFETY AND PRECAUTIONS 6 INCASE OF CAUT cee 6 TROUBLESHOOTING baci oni ew m er res 6 CE 6 PACKAGING SHIPPING AND COMPLAINT 7 WARRANTY AND PRODUCTS RETURN 7 INSTALLATION AND DISCLAIMER 7 POWER SUPPLY AND MAINTENANCE 7 9 INTRODUCTION 10 CONTROLS AND CONNECTIONS 10 FRONTPANEL 10 J USB n eae once Pi ER 10 2 15 10 3 Preset buttons 10 DATA entry knob 10 5 PG UP PG DW 10 bE OG Sra A E or A ERE ERa 11 7 Processing menu buttons 11 8 Input 11 9 A B input MUTE buttons 11 10 input EDIT buttons 11 11 Output meters 11 12 Output MUTE buttons 11 13 Output EDIT buttons 11 14 RTAMICinput 12 REAR PANEL 12 1
4. 1 If you choose ACTIVATE the sequence of programmed events will be activated Raga In ALL according to the real time clock and to the time set for the events B 00 00 a es For activating the SPLM the processor must be set in TOTAL LOCK status mE so in the following page you will be required to enter a password Once the password the PC260 will be put in TOTAL LOCK status and the SPLM sequence Will be activated PFeOEL lt 27 The PC260 processor has a built in 1 3 octave Real Time Analyzer which is a useful tool for measuring the acoustic response of the sound system in order to make the proper EQ adjustments This RTA is not a precise measurement system such as dedicated computer software but it can be used to get a general overview of the system s response in a not too much reverberant and noisy enviroment When you use an acoustic measurement gear remember always the following tips e You have to fix the system not a line on the screen e With the equalization you cannot correct a bad room acoustic if the venue Is too reverberant at some frequencies it remains reverberant also after the equalization e Always listen with your hear do not blindfold trust any measurement A good audio system placed in a good enviroment requires only little adjustments usually
5. 27 L L L high low full high low full amplifier rack DANCE FLOOR MAIN SYSTEM LOUNGE BAR SYSTEM bar 29 The PRONET philosophy PRONET software has been designed by Proel s Research amp Development Department to easily control a single unit or a network of devices like active loudspeakers or speaker processors equipped with the C AUDIO CORE digital processing platform PRONET has been developed in collaboration with sound engineers and sound designers in order to offer an easy to use tool to setup and manage your audio system With PRONET you can visualize signal levels monitor internal status and edit all the parameters of each connected device Download the PRONET app from the PROEL website at http www proel com clicking on support download section Connecting devices To configure a single processor like PC260 you can use a direct connection from your computer to the front panel USB port PC260 has both a USB and a network connection so you ll need to select which connection you want to use in the SETUP menu see above in this manual If you want to use the network connection the PROEL USB2CAN converter is needed The first time you connect a Processor device with USB cable or with USB2CAN converter Windows 0 5 will ask you to install the driver files which you ca
6. 0 0 0 0 0 0 A B 1 2 A 4 5 6 3 PG DW DATA PUSH SELECT PUS This parameter set the threshold level for the compressor limiter Below the threshold no compression limiting occurs above the threshold the signal is compress or limited as indicated in the dynamic curve The threshold level is referred to the 0 dB if the input has no attenuation it corresponds to 0 dBu 775 mV of the input signal so Threshold 21 dB max signal means no detection of input signal see further the SPEAKER PROTECTION SETTING information note for more details ATK Attack time determines how quickly the compressor limiter reacts when the signal reaches above the threshold CORE CHASE INPUT_A THRE 090013 Lin REL ATE dns RATIO Release time determines how slowly the compressor limiter restores its normal REL 0 085 KNEE gain after the signal goes below the threshold Attack and release times are dependent to the music genre and to the type of loudspeaker connected to the outputs For an compressor limiter on the inputs we suggest to start using a medium long time for both attack and release time such as 50mS for the attack and 450mS for the release then shortest or longer the times if some audible artefacts are noted For an output limiter for a CHi OUTPUT 1 THRE 08013 Lin Kes e ATK 45nz RHTIU specified speaker type we suggest to start with the times indicated in the table REL 0
7. 16 GANG NO u us a sis maa SURE E TTL EE a 16 DEVICENAME 16 CHANNELNAME 16 FIRMWARE UPDATE 17 onus RATES 17 PROCESSING MENU 18 EDITING processing menu parameters 18 ROUTING signal routing 18 LEVEL levels and phase polarity 18 XOVER crossover filters 18 DELAT i eras E E 19 graphic equalizer 20 PEQ parametric equalizer 21 DEQ dynamic equalizer 23 DYN dynamic processor 25 SPL 27 UPL T 28 TYPICAL CONFIGURATIONS 29 PC260 2 x 3 xover advanced live or disco system 29 PC260 2 x 2 xover 1 zone advanced live or disco pub system 29 PRONET NETWORK 30 The PRONET philosophy 30 Connecting devices 30 Connecting devices to a PRONET NETWORK 30 Assign the ID number 31 Working with PRONET 31 USB2CAN converter 32 CLOCK BATTERY REPLACEMENT 33 TECHNICAL SPECIFICATION 34 Appendix A signal to power 35 This is a class A digital device which is marked for use in a commercial industrial or business
8. do not f pressed pressed network ogee o ee ep ep do not pressed 30 PFOEL w Assign the ID number To work properly ina PRONET NETWORK each connected device must have a unique Identifier Number called ID By default the PC controller has ID 0 and there can be only one PC controller in a network Every other device connected must have its own unique ID equal or greater than 1 in the network cannot exist two devices with the same ID An ID number 1 assigned automatically to each devices when they are turned on for the first time connected to a network In order to correctly assign a new available ID to each device for working properly in a Pronet network follow these instructions 1 Switch off all the devices 2 Connect them correctly to the network cables 3 TERMINATE the lastest device the network connection 4 Switch on the first device in the network connection If it is a loudspeaker processor keep pressed button on the front panel while switching 1 an active loudspeaker keep pressed Preset button on the back panel while switching on 5 Leaving the previous device switched on repeat the previous operation on the next device until the latest device is turned on The Assign ID procedure for a device makes the internal network controller to perform two operations reset the current ID search the first free ID in the network starting from ID 1 If no other devices are
9. 7526 3763 1881 5978 2989 1494 754 37 189 94 239 119 6 3 754 37 189 94 120 6 30 15 75 38 19 6 30 15 7 239 19 6 3 4 621 0489 48 24 12 6 38 19 5 6 821 9388 30 15 8 4 12 6o 30 15 PFeOEL lt 35 PROEL S p A World Headquarters Factory Via alla Ruenia 37 43 64027 Sant Omero TE ITALY Tel 39 0861 81241 Fax 39 0861 887862 REV 30 13 CODE 96 0040 www proel com
10. DATA PUSH SELECT PUS NOUER CHi OUTPUT 1 1 For each output channel two crossover points can be set which are named 1 set LP HP GEE pins paa and Xo2 Please note that in the FLAT default preset both are set as Thru the Thr Thru signal passes thru without filtering process FREQ 1k Hz FREQ 1k Hz The parameters are LP HP The crossover filter generally consists of a low pass filter in one channel and a high pass filter in the adjacent channel H pass a high pass filter passes frequencies above the crossover point and attenuates those below L pass a how pass filter passes frequencies below the crossover point and attenuates those above As standard Xo1 is set as H pass HIGH PASS and Xo2 is set as L pass LOW PASS but they can be set also differently See the figure below note all the following figures are taken from the PRONET software 2098 1098 IL lll CUT OUT y 00 PST N m A m P 2 120 1 2 2 111 LL Luc 20Hz 100Hz 200Hz 500 1kHz 2kHz SkHz 1 kHz 2DkHz This figure shows the frequency spectrum of an output with Xo1 set as H pass Butt 24 100Hz and Xo2 set as L pass Butt 24 1KHz all signal highlighted is cut out TYPE The PC260 offers a wide choice of HiPass and LoPass filters with different slopes and responses The Type parameter defines the characteristics of the crossover filter e Butterworth 6dB 12dB 18dB 2
11. The A C inlet includes a fuse holder that contains the mains fuse as well as a spare fuse If necessary replace the fuse only with a specified 5x20mm T 1 A 250 V replacement Disconnect A C power before replacing a fuse Before turning the unit back on assess the condition of the A C receptacle powering the unit If the fuse continues to blow refer to PROEL qualified service personnel 17 POWER switch The A C power switch turns power to the PC260 On and Off 18 AES EBU Digital Input In addition to the analog audio inputs an AES EBU digital stereo input is provided and selectable in the SETUP menu The input conforms to IEC standard 60958 Type Connections must be made with three conductor 110 Ohm twisted pair cabling and an XLR connector It allows to use all sampling frequencies in the range of 32 96 kHz THRU POWER ORK OUTPUTS AH a us GND e e 19 TERMINATE switch In a PRONET network the last connected device must be terminated with an inner load resistance especially in a long run cabling press this switch if you want to terminate the unit 20 PRONET Network OUT connector This is a standard RJ45 CAT5 connector with optional NEUTRIK NE8MC RJ45 cable connector carrier used for transmission of remote control data over long distance or multiple unit applications See PRONET section further in this manual 21 PRONET Network IN connector This is a standard RJ45 CAT5
12. environment exclusive of used by the general public or used in the home This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation CAUTION Changes or modications to this product not expressly approved by the manufacturer could void the user s authority to operate this product NOTE This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operations of this equipment in a residential area 1 likely to cause harmful interference in which case the user will be required to correct the interference at his own expense This is a class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measure Under the EM disturbance the ratio of signal noise will be changed above 10dB a This marking shown on the product or its lite
13. AES EBU Connection This connection is wired like the audio analog connection but we recommend the use of the proper threeconductor 110 Ohm twisted pair cable do not use a generic MIC cable USB Cable To connect the computer you can use a Type A B USB cables this cable is readily available in any computer dealers PRONET Cable Network connections between nodes are via rugged NEUTRIK NE8MC ethercon connectors these are high quality connectors and are compatible with standard RJ45 plugs Node connections are made using standard RJ45 connectors and CAT5 cable Long runs should be solid core but standard is fine The implication is that stranded is more robust and less prone to breakage it is therefore suggested that solid should be used for install applications while stranded is better suited to rental applications Termination of all connectors at each END node is essential for the network to function correctly The table shows the standard straight through convention for CAT5 patch cables The straight through cable uses the same connection coding at both ends T568A T568A or T568B T568B these are the most common cable used between network nodes Bear in mind though that only Pins 1 2 4 5 are used to link the PRONET network devices Any CAT5 or CAT6 cable could be used we recommend to use the pre assembled cables with shield in combinantion with the optional carrier NE8MC reliable self made cables require the use of a good crimping tool tha
14. and load the new preset IMPORTANT Make sure that the new preset is appropriate for your system and that the connections to your system are correct for the current configuration Failure to do so could cause unexpected results or damage to the system or its components To exit the Recall process without loading a new preset press the ESC button SETUP or any active buttons in the processing menu ESC button will return the display to run time mode Setup or any active processing menu buttons will display the corresponding edit screen Edited presets can be saved in one of the User Preset memory locations To save a preset press the SAVE button The display will show the SAVE PRESET menu If the previosly loaded preset was a user preset the cursor starts from the same user preset If the previously loaded preset was factory preset the cursor starts from the first user preset Use the DATA knob to select the user destination Locations that already have presets saved them will display a preset name Empty locations will display default in the name field You may select an empty location or a location of a preset that will be over written and push the DATA knob to confirm The display will prompt Push DATA to confirm ESC to abort Press the DATA knob to confirm and save the new preset Now you have to enter a name Rotate the DATA knob to select the letter or symbol then push the knob to skip to the next character i
15. connected and powered the controller assume 10 1 that is the first free ID otherwise it searches the next one left free These operations ensure that every device has it s own unique ID if you need to add a new device to the network you simply repeat the operation of step 5 Every device maintains its ID also when it is turned off because the identifier is stored in the internal memory and it is cleared only by another Assign ID step as explained above This means that if your network is made always of the same devices the assigning ID procedure must be executed only the first time the system is turned on Note 1 If you add a new device as the last device in a Pronet network you have to re set correctly the termination Note 2 Each device is issued from the PROEL factory has 10 1 Often also a device that returns from a technical assistance center will be 10 1 Note 3 Into a Pronet network the IDs don t need to be sequential they only must be unique An example of this happen when you remove or power off a device correctly assigned and already working into a network there is a gap in the IDs sequence but itisn t a problem Another example is when you add a new device with ID already assigned in different Pronet network but different from any other ID already assigned in the network When working without a PC controller you can still connect together a subsystem of active loudspeakers satellities or subwoofers with this kind of
16. connector with optional NEUTRIK NE8MC RJ45 cable connector carrier used for transmission of remote control data over long distance or multiple unit applications See PRONET section further in this manual 22 Balanced XLR Output connectors Each output channel has an electronically balanced XLR connector for the connection to the system s amplifiers IMPORTANT Care must be taken to assure that each output is connected to an appropriate amplifier and loudspeaker to avoid damage or unexpected results Note that a new preset may change the assignment of channel and its frequency range For instance an output assigned to Hi frequency speakers in one preset may be assigned as a sub output in another see Configurations section further on this manual 23 Balanced XLR Input connectors Each input has an electronically balanced locking XLR connector In stereo or dual modes connections to both inputs must be made In mono modes only one connection is needed typically to Input A 24 Balanced XLR Thru connectors Each analog audio input is linked directly to an XLR male connector The signal does not undergo any digital conversion or processing These connectors are used to pass input audio to a second PC260 used as a slave or to other audio inputs in the system 25 6dB PAD switch Input levels to the PC260 can be reduced by 6dB prior to the A D converter to compensate for higher level output from mixers and other audio devices The PC260 s Inpu
17. equalizer To access the parametric EQ section press the PEQ button and then the EDIT button of the channel you want to edit Push the DATA knob to select the PEQ parameter to edit and rotate the knob to adjust it Use PG UP and PG t3 DW buttons for scrolling the pages of the five filters available for each e o e o e o e A B 1 2 A 3 4 5 6 input and output The PC260 PEQ provides a very powerful and complex set of multi mode filters Care must be taken when configuring these filters as they interact and can produce unexpected results Using the PRONET PC application is strongly bd recommended to set all but the most simple eq curves Each band of the PEQ can be configured for a specific filter TYPE FREQUENCY SLOPE SHAPE or GAIN setting Each filter band can be deactivated using the BYPASS parameter as default the BYPASS is active sot he signal passes thru the filter cell unchanged Please note that changing the filter TYPE the gain parameter goes to zero this avoids excessive sound changes during a performance PEGi CHA INPUT_A Attention must be paid to the ultimate output gain through the rest of the GAIN HAPE 1 410 PG DW DATA PUSH SELECT PC260 s audio path as it is possible to boost frequency ranges to the point FREQ ik Hz SLOPE BYPASS LZ TYPE Peak where the internal audio paths of the system may clip A simple rule can be applied to avoid this cutting is better tha
18. written consent being obtained in advance from PROEL PROEL reserves the right to make any aesthetic functional or design modification to any of its products without any prior notice PROEL assumes no responsibility for the use or application of the products or circuits described herein PROEL A 5 e CAUTION Before using this product read carefully the following safety instructions Take a look of this manual entirely and preserve it for future reference When using any electric product basic precautions should always be taken including the following Toreduce the risk close supervision is necessary when the product is used near children Protectthe apparatus from atmospheric agents and keep it away from water rain and high humidity places This product should be site away from heat sources such as radiators lamps and any other device that generate heat This product should be located so that its location or position does not interfere with its proper ventilation and heating dissipation Care should be taken so that objects and liquids do not go inside the product The product should be connected to a power supply mains line only of the type described on the operating instructions or as marked on the product Connect the apparatus to a power supply using only power cord included making always sure it is in good conditions A WARNING The mains plug is used as disconnect device the disconnect device shall remain re
19. 2 16 FUSE 12 17 POWER switch 12 18 AES EBU Digital Input 12 19 TERMINATE switch 12 20 PRONET Network OUT connector 12 21 PRONET Network IN connector 12 22 Balanced XLR Output connectors 12 23 Balanced XLR Input connectors 12 24 Balanced XLR Thru connectors 12 25 6dB PAD switch 12 26 GND LIFT switch 12 CABLE 5 13 Audio Cables 13 Balanced Input Output Connections Recommended 13 Un balanced Input Output Connections Not recommended 13 Digital Input AES EBU Connection 13 USB Cable 13 PRONET Cable 13 PROELMA OPERATING 14 REMOTE MODE using PRONET software 14 RUN TIME 14 PRESETS 4 duet 14 DEAFAULT Presets 14 FACTORY Presets 14 PROTECTED PIBSSDS 224 dec 14 USER Presefs Eni ees 14 Recall a Preset 15 Save a 15 Delete a 15 SETUP ul ee ee a a 16 MISCELLANEOUS 16 TIMES
20. 2x32 LCD Graphic Display 4 LED USB RJ45 PRONET network 44 x 482 x 295 mm 4 1 kg 9 Ib 100 to 240V 15 50 60 Hz 35 VA Internal processing Frequency response Display Input Output meters Remote control Dimensions Weight AC Power Consumption 4 PROEL A With the following table is possible to set the limiters without using a scientific calculator To explain how to use it we make an example You have two loudspeaker with this data Power handling 250 Waes Nominal Impedance 8 ohm and an amplifier capable of 600 Wcontinuos at 4 ohm with a FIXED GAIN of 32 dB so the loudspeakers are arranged in parallel resulting a power handling of 500 Waes at 4 ohm you have to choose the 4 ohm column in the fixed gain 32 dB scroll the values until reach 475 it is the value more close and slighlty less to 500 Waes then scroll the row at right and note the 3 dBu value this is the value of the input signal that delivers 475 W to your loudspeaker you have to set the limiter to this value Note to avoid clipping the amplifier must be always capable to deliver a power greater than the power you have to limit INPUT SIGNAL to OUTPUT POWER CONVERSION TABLE Power Output Input Signal Fixed amp gain 26 dB Fixed amp gain 32 dB Impedance Impedance 7526 3783 1831 7490 1 5978 P 2989 M94 59 952 426 15016 7508 3754 11927 5964 2982 9474 4737 2369
21. 455 below and then adjust them if some audible artefacts are noted MODE This parameter is used to set the dynamic processor as compressor Comp or limiter Lim When it is set as limiter the RATIO parameter is not available because the limiter has a fixed ratio of OO 1 In limiter mode also the KNEE parameter fixed as hard knee and the GAIN parameter are not available RATIO Available only when the dynamic processor is set as compressor this parameter sets the amount of compression for the signal In other words it determines the input output ratio for signals above the threshold For example a 5 1 ratio means that an input signal overshooting the threshold by 5 dB will goes out compressed to 1 dB KNEE This parameter controls the transition from uncompressed to compressed signal in the dynamic curve of the dynamic processor Knee works in conjuction with the Ratio parameter to gently reduce the dynamic of the signal minimizing the effects of non naturality that a hard compression causes especially for higher ratios where the changeover from uncompressed and compressed signal is more noticeable The knee can be set as follow Hard select a basic hard transition of the dynamic curve 50111 select a smooth and continuous transition of the dynamic curve from 5dB under the threshold to 5dB above the threshold Soft2 select a smooth and continuous transition of the dynamic curve from 10dB under the threshold to 10dB above the th
22. 4dB 48dB e Bessel 12dB 18dB 24dB 48dB e Linkwitz Riley 12dB 24 dB 48dB Each filter be bypassed setting it as thru The figures below show the various slopes with the FREQ parameter set at 1 kHz BUTTERWORTH BESSEL LINKWITZ RILEY FREQ PC260 offers input and output delay Master A and B input delay is useful for compensating different arrival times of sound originating from loudspeakers DELAY e that are closer or further away from the listener than others Channel 1 to 6 output delay is useful for compensating physical offsets of the 0 acoustic centers of transducers within a loudspeaker cabinet For example A B 1 2 L 4 5 6 due to cabinet construction the acoustic center of a high frequency transducer may be placed behind or in front of the acoustic center of the low frequency transducer The Delay parameter can align the audio signal between the multiple transducers within the loudspeaker The output delay can be useful also to align the subwoofer usually placed at ground level with the satellite iN speakers suspended Available delay parameters are DELAY and UNITS The DELAY parameter allows the user to set the Delay time values 0 to bre 300 00ms or 0 to 200m 675ft PUS
23. DATA entry knob The DATA knob is used to scroll and select presets and to scroll and edit data parameters and values 5 PG UP PG DW buttons Use these buttons to navigate through the menus pages The number of the page 1 diplayed in the right upper corner of the screen the button cycles through all available pages 10 PROE L 6 ESC button Press this button to exit from the current menu and return to the Run time mode screen 7 Processing menu buttons ROUTING Use the ROUTING button to enter the routing menu the ROUTING button lights In this menu you can set the signal path for each output LEV level setting Use the LEV button to enter the levels menu the LEV button lights In this menu you can set the level and phase for each input and output XOVER crossover filters Use the XOVER button to enter the crossover menu the XOVER button lights In this menu you can set the HP or LP filter parameters for each output DELAY Use the DELAY button to enter the delay menu the DELAY button lights In this menu you can set the delay time for each input and output SETUP Use the SETUP button to enter the setup menu the SETUP button lights In this menu you can set the various general parameters GEO graphic equalizer Use the GEQ button to enter the graphic equalizer menu the GEQ button lights In this menu you can set the equalization of each input PEQ parametric equalizer Use the PEQ button to enter the para
24. Default To Th Gr SAVE Toa TA LEUH DATA TO RCL zldFacteru 2 PUSH DATA T SEL OG De Fault PFeOEL lt 15 The Setup menu allows access PC260 s global parametersThis is where preferences for many functions can be set or adjusted Use page up PG UP and page down PG DW to scroll between setup pages Rotate the DATA knob for selecting the values data and push it to enter them MISCELLANEOUS METERS MUTE Here you can set if the output meters show the signal before PRE or after POST the mutes button TEMPERATURE Here you can set the ambient temperature in order to calculate the speed of sound for converting delay times into distance As default the temperature is set in celsius units scale in the following page you can set the unit as Fahrenheit INFORMATION NOTE Speed of sound Sound travels at different speeds depending on the density of the surrounding air it is traveling through Cold air is denser than warm air thus travels slower than it would if V 331 F 0 6 e T the air was warmer Temperature can have a major influence with greater distances m s particularly with respect to widely separated speaker arrays surrounding the audience for example Temperatures might vary wildly between an indoor environment and an outdoor evening environment for example The speed of sound at room temperature of 20 C is 343 meters per second At freezing temperatures sound travels at 331 meters per se
25. EIETIM may be more than 2 years and the battery status is showed on the display In the figure the left the bar inside the battery shows that it is completely charge ido a d f c F 1 When it will be completely empty the battery must be replaced as follow Ei HOT ACTIVE 0 USEA CR2477 LITHIUM BATTERY FOR REPLACEMENT 1 DISCONNECT THE PC260 FROM THE MAINS LINE OUTLET 2 OPEN THE PC260 REMOVING THE SCREWS SHOWN IN THE FIGURE 3 LOCATE THE BATTERY IT IS THE SILVER BOTTON ON THE REAR SIDE 4 REMOVE THE OLD BATTERY USE A PLASTIC TOOL TO LIFT UP THE POSITIVE CONTACT 5 PLACE THE NEW BATTERY INSTEAD THE OLD ONE IMPORTANT AT THIS POINT ALWAYS FOLLOW CAREFULLY THESE TWO STEPS IN ORDER TO AVOID ABNORMAL CONSUMPTION OF THE BATTERY 6 SWITCH ON THE PC260 AND WAIT SOME SECONDS UNTIL THE DISPLAY SHOWS THE INITIAL PAGE 7 SWITCH OFF WAIT 2 SECONDS THEN SWITCH ON AGAIN BE CAREFUL DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED REPLACE ONLY WITH SAME TYPE CR 2477 LITHIUM MANGANESE DIOXIDE BATTERY The battery contains Perchlorate Material special handling may apply it should not be disposed with other household wastes at GO the end of its working life To prevent possible harm to the enviroment or human health from uncontrolled waste disposal please separate this from other types of wastes and recycle it Li ion PROEL 33 Input Section Inputs 2 electronically balance
26. H SELECT PROELS 19 CHA INFUT_A The UNIT parameter allows to set the delay unit in us microsecond 10 s ms millisecond 10 s mm millimeter 10 m m meter inch and feet values To access the delay section press the DELAY button and then the EDIT button of the channel you want to edit Push the DATA knob to select the parameter to edit and rotate the knob to adjust it Note The effect of air temperature is also automatically calculated for the total delay time using the Temperature value entered in the Setup Menu IMPORTANT Make sure that the Master A and B input channels delay is exactly the same when an output is routed from the A B sum We recommend to link the inputs ganging to make sure that the same delay is applied to both inputs Failure to do that could cause unexpected results on each A B sum output internal comb filtering INFORMATION NOTE Subwoofer delay time adjustment PC260 processor allows the adjustment of the delay to allow the correct alignment of the system The default setting gives the correct temporal alignment for when the tops are set up directly above the subwoofers in any other case the delay should be adjusted to correct the alignment The delay to be added to the preset can be calculated quite simply The above figure showsan example of this alignment The system is composed of a flown satellite and a subwoofer positioned on the ground The sound coming from the su
27. ING LEV XOVER DELAY e e CORE 12 12 12 12 SETUP GEQ PEQ DEO 24 24 24 24 ESC DYN SPLM RTA A B 1 2 3 4 5 6 RTA MIC INPUT QUTPUTS gt gt yn v w gt o z gt INPUT B gt y INPUTA P GND PAD LIFT 6dB mm 777 e e 4 3 2 0dB M V OUTPUT CONNECTIONS INPUT PAD BUTTON GROUND LIFT BUTTON INPUT CONNECTIONS PROELM A The PROEL PC260 digital loudspeaker controller is based on the CORE DSP platform and features state of the art signal processing advanced functions and a very intuitive user interface with a direct access to all the editing functions and remote control capability The 40bit floating point resolution and the 24bit AD DA converters ensure a perfect signal integrity with a dynamic range in excess of 110dB for a superior sonic performance PC260 includes a full set of functions and features 2 inputs with AES digital input and 6 outputs Each INPUT features 5 bands of full PARAMETRIC EQ including parametric shelving notch res HP and LP allpass and bandpass 28 bands of GRAPHIC EQ and 3 bands of an extremely versatile and powerful DYNAMIC EQ A fully programmable COMPRESSOR LIMITER and up to 600ms of delay are also available The OUTPUTS include any kind of crossover filters with slope up to 48dB per octave t
28. LM the user can program changes in the settings of the audio system at a specified time in a specified day of the week The PC260 has an internal clock that keeps the time also if the unit is turned off so when an SPLM program is activated the event programmed can be performed real time The SPLM has 4 programs that can be used for example for different periods of the year Each program includes 16 events that can be selected among the following Mute Level Threshold DYN processor adjustment on the INPUTS single A or B ALL Mute Level Threshold DYN processor adjustment on the OUTPUTS single 1 to 4 or 1 to 6 ALL PRESET recall Press the SPLM button to access the first page of the Sound Pressure Level Management where you can select the PROGRAM to edit or activate using the DATA knob rotate press DATA PUSH SELECT In the following page use again the DATA knob rotate press for choosing between EDIT or ACTIVATE SPLA PROGRAM SELECT 1 U z Prozranm 3 Presran _ If you choose EDIT in the following page you have to enter the name of the program type the name using the DATA knob then press SPLM to confirm it Use PG UP or PG DW to scroll between the events and the DATA knob for setting the time and choosing the event to program Finally tick the ENABLE flag note that unticked flags disable the event of the list
29. SIDECHAIN is set to NORMAL for the HF band because in a typical audio spectrum there isn t sufficient energy in high frequency range for driving properly a dynamic control 20Hz S Hz 1 Hz 200Hz S Hz 1kHz 2kHz SkHz 1 kHz 20 2098 1 598 1098 SdB DdB 508 1 dB 15dB 20dB inlevel dyn dain DEO 1 in level inlevel dyn gain DEO 3 121 Hz Z Freq Z Freq 5856 Hz 2 0 dB S Gain S Gain 2 0 dB S Gain 2 35 0 Band 2 35 0 Band Low Shelf v 2 Parametric v Type nsn Nu 6 0 dB Z Thresh S Thresh 0 0 dB Lel Thresh Ea Ea Slow 1 Time Medium 1 Time Above b Below 24 LO Um DYN dynamic processor To access the first page of the dynamic section press the DYN button ro and then the EDIT button of the channel you want to edit Push the DATA knob to select the parameter to edit and rotate the knob to adjust it Use PG UP and PG DW buttons for scrolling between the two pages available Each input and output of the PC260 has a dynamic processor hat can be configured as limiter or compressor and that provides a very complete set of parameters to control the sound dynamics The most typical setups includea limiter on the outputs for protecting the speakers from excessive power and a compressor on the inputs for enhance the performance of the loudspeaker system or for controlling the sound pressure level THRE
30. T PARTIAL LOCK PRESET LOCK TOTAL LOCK For setting a different LOCK level rotate the DATA knob to select the level press the DATA knob to confirm the new level and then input a password using again the DATA knob Press SETUP again for confirming all data Press ESC or PG UP DW buttons to escape from this page without changing the lock status FULL EDIT This is the defult LOCK level when you turn on the PC260 for the first time or when an operator performs a FULL SYSTEM RESET All routing setting sare available and all DSP input and output parameters are accessible and adjustable only input parameters for Factory and protected presets Resulting settings can be saved into any User Preset location for later recall Editing can be performed from the control panel or from a PC with PRONET software PRESET LOCK This LOCK level allows only the USER Presets saved in the processor s memory to be recalled The only other parameter accessible is the inout and output MUTE This LOCK mode level can be used by installators who want to save a number of different presets for the sound system and then lock any other parameter except the preset recalling PARTIAL LOCK Limited editing can be performed on Factory Protected and User presets INPUT parameters DELAY GEQ PEQ DEQ DYN mute and level OUTPUT parameters mute and TRIM level SPL Management TOTAL LOCK NO editing can be performed on the processor including the preset recall No
31. adily operable Donot cancel the safety feature assured by means of a polarized line plug one blade wider than the other or with a earth connection Make sure that power supply mains line has a proper earth connection Power supply cord should be unplugged from the outlet during strong thunderstorm or when left unused for a long period of time Do not place objects on the products power cord or place it in a position where anyone could trip over walk on or roll anything over it Do not allow the product to rest on or to be installed over power cords of any type Improper installations of this type create the possibility of fire hazard and or personal injury This product in combination with loudspeakers may be capable of producing In Hours Slow Response Example sound levels that could cause permanent hearing loss Exposure to extremely Duo in small club Subway Train high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time The U S Government s Occupational Safety and Health Administration OSHA has specified the permissible noise level exposures shown in the following chart According to OSHA any exposure in excess of these permissible limits could result in some hearing loss To ensure against potentially dangerous exposure to high sound press
32. and some bars below the mid line DATA PUSH SELECT 4 If a noticeable misalignment is displayed you can try to adjust it using the input or 5 After some adjustments you may be obtain a more linear RTA Often if the misalignement is under the 400 Hz and you cannot obtain any adjustment try to move the MIC in another position 40 63 100 160 250 400 630 1 0K 1 6K 2 5K 4 0K 6 3K 10K 16K BEFORE EQ ING 6 Once you are satisfied turn off the pink noise and play you favorite songs By turning on and off the EQ section listen the differences and if necessary adjust the EQ settings Always remember the first tip You have to fix the system not a line on the screen 40 63 100 160 250 400 630 1 0K 1 6K 2 5K 4 0K 6 3K 10K 16K AFTER EQ ING 28 a As explained in the ROUTING section the signal routing from input channels A amp B is completely free and and can be assigned to any output channel The following figures show some configuration example PC260 2 x 3 xover advanced live or disco system qo S lt h oQa asp 00000000 hight high mid mid Y low T amplifier rack output PC260 2 x 2 xover 1 zone advanced live or disco pub system Ns s a B INPUT A 6 5 4 3 N
33. b covers a shorter distance that the top in reaching the listener position it is therefore necessary to delay the emission of the sub to restore the correct temporal alignment If d is the distance the subwoofer is placed in relation to the theoretical alignment position the dashed image in the picture the delay to be set on the processor can be calculated using the following equation where is the speed of sound about 344 m s The 260 processor also allows the delay to be set directly in meters or feet Example If the subwoofer Is positioned 2 metres forward from the line of satellite units the equation would work as follows d 2m 2 344 0 0065 6 ms graphic equalizer 9 the section you can control the 28 bands 1 3 octave graphic equalizer of each input channel The GEQ is controlled using gain sliders just like you would do in a normal graphic EQ To access the first page of the graphic EQ section press the GEQ button and then the EDIT button of the input you want to edit Push the DATA knob to select the parameter to edit GAIN or FREQUENCY iN and rotate the knob to adjust It DATA PUSH SELECT PUS In the second page of the GEQ section there is a useful BYPASS function for comparing the sound with and without EQ In addition it s possible to select the response TYPE of the equalizer by changing the shape or Q of the single cells The behaviour of each type i
34. by cutting few dBs in some frequency ranges If you have to set exaggerated EQ you probably have a noticeable acoustic problem and EQ ing could not be the right cure e Acoustics measurements are not a simple issue and require a specific knowledge To make a measurement you must have some additional equipment e A measurement microphone for this kind of measurement you don t need the best microphone avilable a simple and economic class 2 microphone is sufficient e A microphone stand A XLR balanced cable the lenght depends by the distance between the measurement mic and the PC260 e A track with a pink noise record pink noise is a special random noise where each octave carries an equal amount of noise power A track or a selection of tracks of your preferred songs Connect the mic to the MIC INPUT then place the mic on the stand at the centre of the venue The distance between the speakers and the measurement mic must be no longer than 10 meters 30 ft otherwise you may not have a sufficient signal to noise ratio 1 Play the pink noise on the audio system 2 Turn up the volume to a reasonable level avoiding to compress limit any input output in the PC260 see the LED indicators on the front panel 3 Press RTA then using the DIAL knob adjust the mic input level to have a sufficient signal across the mid line If the audio system is right tuned the 1 aproximately linear with some bars above
35. cond V is the speed of sound and T is the temperature of the air This formula finds the average speed of sound for any given temperature celcius The speed of sound is also affected by other factors such as humidity and air pressure IN SELECT Here is where you can select the type of input between Analog and Digital AES EBU COMM MODE Here is where the communication port is set You can choose between USB and Pronet Network port The communication status is showed in the first line of the Run time mode display if appears this symbol the communication is set as USB if appears this symbol the communication is set as NETWORK SETUP AL SCELLANEOUS TERPERATURE 20 IH SELECT Anal gt 1 RETERS AUTE EBA MODE Usb UNITS TEMPERATURE rr ae Here is where the temperature units can be chosen between in Celsius or Fahrenheit EQ BAND Here is where the bandwidth for parametric filters can be set as quality factor Q or as octave width OCT TIME SETUP TIME 511 11 11 11 1111 This page is where the internal real time clock 1 set aa iu 01 ix SETTING GANGING This page is where the channel ganging is set When GANGING is PC260 are ee FUT CHi 0000 SETUP T CONFIRM 2 EE activated all the channels parameters are linked toghether if you change a parameter in one of these channels also the same parameter of the channels ganged with it changes Ganging link
36. d gt 10 kohm 20 dBu 26 dBu with 6dB pad 6 dB to 30 dB in 0 2 dB steps XLR F XLR M to link AES EBU 32 96 KHz sample rate converter inside Input Impedance Maximum Input Level Input gain Input Connectors Digital Input Output Section Outputs 20 dBu 115 dB to 30 dB in 0 2 dB steps and mute XLR M Maximum Output Level Output Gain Output Connectors Crossover Filters Slopes Type 6 12 18 24 48 dB per octave Bessel Butterworth Linkwitz Riley 600 ms on ALL In and Out 21 us Max Delay time Min Delay Step Parametric filters Maximum number of filters EQ Type EQ Gain Q bandwidth EQ freq Dynamic EO filters 5 per input 5 per output Parametric Notch Shelf Bandpass res hp Ip Allpass 115 dB to 15 dB in 0 2 dB steps 0 4 to 28 85 3 to 0 05 1 20 oct steps 15 6 Hz 22 62 kHz 1 20 oct steps Maximum number of filters 3 per input Parameters EQ Param Shelf 6 Freq Gain Thre Time Below Above EQ Type EQ freq EQ Gain EXTRA FEATURES RTA range RTA MIC input SPLM 28 band 1 3 oct 31 5Hz 16kHz 1 3 oct 112 dB to 12 dB in 0 2 dB steps 20Hz 20kHz 1 3oct 15V phantom power 4 scene 16 events for each scene AD DA conversion AD DA latency Sampling frequency 24 bit 1 68 ms analogue in analogue out 48 KHz 48 kHz 40 bit floating point 0 5 dB 20 Hz 20 kHz Dynamic range gt 110 dB 20 H 0 kHz unweighted Distortion THD lt 0 015 Q 1kHz 18dBu 19
37. ell allowing for easy in field updates 2 Display The display allows for operation and editing of the PC260 without the need of a connected PC It works in conjunction with the buttons to operate navigate and edit the parameters In Run time mode the top line shows the model name the network operation mode the lock status the battery status and the real time clock t The rest of the screen tt displays the machine name the name of the currently selected factory or user preset the SPLM status and the routing Pressing the RCL or SAVE buttons switches to their respective preset menus Pressing a processing menu button switches the display to their respective parameters page The contrast is set automatically 3 Preset buttons RCL Recall Press the RCL button to enter the Recall Preset menu the RCL button lights Use the DATA knob to scroll the any factory or user preset and push it to recall the selected preset into current memory Pushing the DATA knob completes the preset load operation and returns the LCD display to Run time mode To exit without recalling a preset press ESC SAVE Press the SAVE button to enter the Save Preset manu the SAVE button lights In this menu edited presets can be named and saved to a user preset location Use the DATA knob to choose the user memory location to enter the preset name then complete the saving operation pressing SAVE again To exit without storing the current preset press ESC 4
38. ered signal is sent L helf at frea f cut freq 0 to the threshold detection block The filter applied for the sidechain is choosen according to the TYPE of filter selected for the signal Peaking centered at f0 pass band centered at f0 equalization see the table High Shelf at freq TU High pass cut freq 10 BYPASS Enable or disable the single DEQ filter LEV METER As show in the block diagram the level meter receives the signal after the sidechain block so it shows the signal that controls the threshold detection block for a specific filter It s useful for checking your sound program and set an appropriate threshold level GAIN METER The GAIN meter shows the amount of gain reduction of the filter Depending on how the filter MODE is set ABOVE BELOW you can see the filter action while the sound is played The example below shows how to use the DEQ for obtaining an automatic loudness effect In filters 1 and 3 low and high frequencies are boosted when the signal is BELOW the threshold this means that the sound is richer and more defined with a low level signal Whenever the signal goes above the set theshold the low and high frequency boost is reduced or cancelled The filter 2 has a cut in the mid high region that is activated when the signal goes ABOVE the threshold this means that with a high level signal the sound is more pleasant and less harsh Note that the time setting is decreasing with frequency and that the
39. es of the three dynamic EQ filters available for each input The first line of the display shows the EQ filter number DEQ1 DEQ2 DEQ3 For each EQ filter you can set many parameters GAIN FREQ BAND TYPE THRESHOLD and TIME are in the first page of the filter MODE SIDECHAIN and BYPASS are in the second page The first page shows also the input LEVEL meter and the second page the GAIN meter When Input A and Input B channels are linked see SETUP GANGING section the display first line shows CHA amp B and the DEQ parameters are modified in the same way in both inputs A and B IN A DEO EACH CELL IS AN EO FILTER WHERE THE GAIN PARAMETER IS DYNAMICALLY CONTROLLED BY THE LEVEL OF THE INPUT SIGNAL All parameters can be adjusted separately for each cell these are Faran GAIN THRE 0 048 Sets the gain parameter for the filter TIHE Hediuni _ FREQ iDEO1 CHA INPUT_A RODE SIDECH Horn BYPASS E Sets the reference frequency for the filter BAND Controls the filter bandwidth available only for parametric type and not for shelving types TYPE Selects the type of filter Note that when changing the filter type the GAIN is set to zero EQ filter types available are Param as Parametric filter LoSh as Low Shelf 6dB oct filter HiSh as High Shelf 6dB oct filter THRE Threshold sets which the level of the input signal that congrols the gain of the dynamic EQ filter According to the MODE settin
40. g ABOVE BELOW when the input signal reaches the threshold the gain increase or reduction of the dynamic filter is activated Dynamic equalization Dynamic Eq Cell 2 Dynamic Eq Cell 3 Dynamic Eq Cell 1 Dynamic filter Dyn Gain Gain control Atk Rel Threshold Above Below filter PROELMA or deactivated The amount of gain increase or reduction is shown by the GAIN METER see also MODE parameter The threshold level is referred to 0 dB if the input has no attenuation it corresponds to 0 dBu 775 mV of the input signal so Threshold 21 dB max signal means no detection of input signal 23 Time definitions for DEQ cells TIME Determines how quickly the DEQ filter reacts to signals that reach the threshold attack and how slowly it is restored after signal goes goes away from the threshold release The table to the left shows all possible settings and the relative attack and release time In order to avoid pumping effect on the signal choose a fast setting for high frequency EQ and a slow setting for low frequency EQ MODE It determines if the DEQ filter works when the signal is ABOVE the threshold or when the signal is BELOW the threshold SIDECH Sidechain determines how the detection block analyzes the signal In normal mode NORM the whole signal is sent to the threshold TYPE signal equalization SIDECH SIDE filter detection block In sidechain mode SIDE a filt
41. has been engaged to allow system levels to be optimized This also means that the output metering will be displayed differently depending on the limiter threshold setting 12 Output MUTE buttons Each output channel has a lighted Mute button Pressing the Mute button turns off the output of that channel The button lights red as an alert Press the Mute button again to restore the output channel s signal 13 Output EDIT buttons Use these buttons to access the editing of the output s parameter the buttons light blue when pressed Pressing these buttons while in Run time mode you enter the LEVEL menu the LEV button also lights where you can adjust the level of the selected channel If a processing button such as XOVER DELAY DYN has been previuosly selected pressing the edit button you choose the channel to process PFeOEL lt 11 14 RTA MIC input This balanced XLR input 1 fitted a phantom power to supply and can be used for connecting a condenser microphone for acoustic measurements This allows the PC260 to measure and display in real time the signal reproduced through the speakers system in the acoustic environment REAR PANEL 15 AC The PC260 features a standard IEC A C inlet that will accept universal power cords The PC260 power supply is auto ranging and can accept voltages from 100 240 V AC 50 60 Hz Only A C cords approved for use in your country should be connected to the PC260 16 FUSE holder
42. he front and back panels Absolutely do not obstruct the ventilation holes Blocked ventilation can cause damages and fire Do locate sensitive high gain equipment such as mixer preamplifiers recorders or AD DA conversion units directly above or below these amplifiers Because these amplifiers have a high power density it ha a strong magnetic field which can induce hum into unshielded devices that are located nearby If an equipment rack is used we recommend locating the amplifier in the bottom of the rack and the mixer preamplifier or other sensitive equipment at the top Locate the speakers as far away as possible from radio or television receivers or other sensitive equipment These amplifiers have a strong magnetic field which can induce hum and noise into unshielded devices that are located nearby with consequent deterioration of reception of image and sound Proel S p A reserves the right to change these specifications at any time without notice Proel S p A declines any liability for damages to objects or persons caused by lacks of maintenance improper use installation not performed with safety precautions and at the state of the art POWER SUPPLY AND MAINTENANCE e Clean only with dry cloth e Check periodically that the slots for its proper ventilation and heating dissipation are not obstructed by dust remove the dust using a dry brush or a compressed air gun e These devices have been designed with CLASS construc
43. metric equalizer screen the PEQ button lights In this screen you can set the equalization of each input and output DEO dynamic equalizer Use the DEQ button to enter the dynamic equalizer screen the DEQ button lights In this screen you can set the dynamic equalization of each input DYN dynamic processors Use the DYN button to enter the dynamic menu the DYN button lights In this menu you can set the signal dynamic processing compression and limiting of each input and output SPLM level manager Use the SPLM button to enter the level manager menu the SPLM button lights In this menu you can set the level management for each input and output RTA real time analyzer Use the RTA button to enter the analyzer menu the RTA button lights In this menu you can set the level for the RTA MIC input 8 Input meters The input meters monitor the input level of either analog or AES EBU inputs depending on the input mode set in the Setup Menu Optimal signal to noise performance is obtained when the average input level consistently lights the 12dBu green and intermittently lights the 6dBu Yellow LED indicators As the PC260 is a digital audio device the digital clipping produces very unpleasant results so the Clip red LED should never light If the PC260 s input does clip reduce the output level of the connected mixer The 6dB PAD button at the rear panel can be used for adjusting the input level also 9 A B input MUTE but
44. mplaint for manumitted package should be done within eight days from product receipt WARRANTY AND PRODUCTS RETURN Proel products have operating warranty and comply their specifications as stated by manufacturer Proel warrants all materials workmanship and proper operation of this product for a period of two years from the original date of purchase If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period the owner should inform about these defects the dealer or the distributor providing receipt or invoice of date of purchase and defect detailed description This warranty does not extend to damage resulting from improper installation misuse neglect or abuse Proel S p A will verify damage on returned units and when the unit has been properly used and warranty is still valid then the unit will be replaced or repaired Proel S p A is not responsible for any direct damage or indirect damage caused by product defectiveness INSTALLATION AND DISCLAIMER Proel products have been expressly designed for audio application with signals in audio range 20Hz to 20kHz Proel has no liability for damages caused in case of lack of maintenance modifications improper use or improper installation non applying safety instructions e These amplifiers are adapted in a properly ventilated standard professional 19 rack These units feature ventilation holes on t
45. n boosting The following graphs show how the signal changes when a specified filter is used Peak or Parametric filter A parametric equalizer has three parameters that determine the frequency response frequency or octave bandwidth and gain Parametric filters are ideal for identifying isolating and correcting problematic frequency ranges The graph shows the response at 1KHz 15dB or 15dB oct 0 05 1 0 3 0 20Hz S Hz 100Hz 200Hz 500 1kHz 2kHz SkHz 10kHz 20kHz Notch filter A notch filter has two parameters that determine the frequency response frequency Q or octave bandwidth Notch filters are ideal for identifying isolating and correcting problematic frequency in particularly to cut a microphone feedback The graph shows the response at 1KHz oct 0 05 1 0 3 0 20Hz SOHz 100Hz 200Hz 500Hz 1kHz 2kHz SkHz 1 kHz 20kHz PFOEL 21 Low shelf A shelf filter has three parameters that determine the frequency response frequency gain and slope In a Low shelf filter the frequencies below its frequency setting can be boosted or cut The extent of width of the filter s transition band is the Slope it can be fixed at 6 or 12dB or vary in this range The graph shows the response at 1KHz 15dB or 15dB 6 o
46. n find in the Driver folder within the Pronet application folder by default is C Program Files Proel Pronet Driver or if you changed it your path Driver Please refer also to Installation and Drivers paragraphs in the Pronet documentation Connecting devices to a PRONET NETWORK For managing complex setups including multiple units of active speakers and processors PROEL engineers have developed a networking system based on a robust reliable and fast communication protocol called CANBUS The devices in a PRONET NETWORK are connected toghether with a linear bus topology A PROEL USB2CAN CONVERTER is needed for connecting the network to the USB port of the PC running the PRONET application The USB2CAN CONVERTER is connected to the newtork input of the first device the network output of the first device is connected to the input of the second and so on For the network connections simple RJ45 cat 5 or cat 6 ethernet cables can be used The beginning and the end of a PRONET NETWORK must be terminated One side is terminated by the USB2CAN converter the other side must be terminated pressing the TERMINATE switch on the last device All devices between these two points must have the TERMINATE switch lifted PC NOTEBOOK USB2CAN USB 2 0 port CETE ENUN 51 last device pI PC260 TERMINATE f OUT TERMINATE IN
47. n the name field The PC260 provides the complete ANSI character set in this order SS amp 0123456789 lt gt ABCDEFGHIJKLMNOPQRSTUVWXYZ N abcdefghijklmnopgqrstuvwxyz When the preset is named press SAVE again e DATA PUSH SELECT U lia Factory 1 2lFactorw 1 Factory Factory 2 PUSH TO RCL 04 E DATA CONFIRM ESC TO ABORT DATA PUSH SELECT T lld Factoru 1 as eer 5 gFactorw 1 FUSH DATA T SEL Factory 1 PRESET PUSH DATA TO COMFIRA mm m a m EDIT PRESS SALE TO STORE To exit the Save process without saving a new preset press the ESC button SETUP or any active buttons on processing menu ESC button will return the display to run time mode Setup or any active processing menu buttons willdisplay the corresponding edit screen Also if doesn t happen very often sometimes could be necessary to erase a preset particularly when using the PRESET LOCK mode or the SPL manager and you need to cancel previously stored preset that rae not used anymore To erase a preset you have to recall the Default preset no 1 and save itin the user location you want to erase PRESET oO 1 1 RECALL PREZET Oo 1 71 ZAR e 01 US Preset RCL 1 Hi Default 5l
48. nents used in professional audio and sound reinforcement usually it is indicated in the speaker technical data in Wars This standard is actually the best method to know the power handling capability of the speaker for a standard music program In case of a group of speaker connected to the same channel you have to consider the whole power handling 2 The nominal impedance Zuou of the speaker and or the resulting nominal impedance of the group of speaker connected at the same amplifier channel typically 4 or 8 ohm 3 Choose an amplifier that can drive this speaker with a nominal continuous power Pave or THD lt 1 higher than the specified power handling of the speaker Obviously this power must be delivered from the amplifier for the nominal impedance specified The power of the amplifier must be always higher than that of the speaker in order to avoid the signal clipping an event that can seriously damage or destroy a speaker 4 A typical professional amplifier has two operating modes that can be selected by a switch in the rear panel The first mode is at nominal input sensitivity which means that full power is delivered when the input signal is XX dBu typical values being OdBu 4dBu The second mode is at fixed gain which means that the amplifier voltage gain 1 fixed at a specified value expressed in dB typical values being 26 or 32dB GAIN To simplify the calculations we con
49. net network you need a USB2CAN converter that converts the USB data flow into the CAN bus The USB2CAN converter needs to be connected to a USB 2 0 full speed USB2CAN Features ARM7 microcontroller inside Galvanic isolation 500 V Voltage supply via USB bus USB 2 0 full speed High productivity on 1Mbit CAN bus speed Wide CAN bus baud rate range 10 1000 Kbit s Compliant with CAN specifications 2 0A 11 bit ID and 2 0B 29 bit ID Firmware upgrade via bootloader Drivers for Windows 2000 Windows XP Windows Vista Windows 7 To install correctly the software driver for the USB2CAN converter see Installation and Drivers paragraphs in the included or online ducumentation When you connect the converter to the USB port of the PC the LED on the top lights RED this mean that it is powered but the converter Is not working yet The first time you go online the Pronet software application starts to control the network via the USB2CAN controller sending and receiving datas from connected devices If everything is OK the LED on the top of the converter lights GREEN indicating the activities on the network If there is a problem with the software driver with network bus or there is a problem on the converter the LED flashes red and or green 32 PF02OEL a The internal clock is equipped with a long time discharge LITHIUM battery in order to keep running also when the unti 1 switched off The discharge time TITEL H IGIIHEHEEI
50. network when you change a preset in one device you also change the same preset in each connected device of the same type the same model Working with PRONET PRONET application constantly checks the status of connected devices if one of them loses the connection network discontinuity power shut down and so on its label in the device tree list is highlighted with a red background colour PRONET application detect automatically if a disconnected device is re actived in this case PRONET re load the device s data and the label in the device tree list changes to a green background colour PRONET can also detect automatically if a new device has been connected If the new device s ID is a valid one then PRONET loads Its datas and a new label appears in the device tree list If the ID is not valid because there is another device with the same ID in the network no new device appears in the tree list or ID conflict Wrong Type message appears in the device tree list In this case turn off the devices then turn on it as described in the ASSIGN ID section at the point 5 then force a new scan of the network using the rescan button on the PRONET application also available in Menu Connection Rescan A rescan operation clears the device tree list and searches again the connected devices More detailed instructions about PRONET application can be found in the included on line documentation PROEL 31 USB2CAN converter To work with a Pro
51. o 6dB This parameter can be adjusted also if the PC260 unit is in PARTIAL lock status The PHASE value can be set between 0 normal polarity or 180 reversed polarity XOVER crossover filters The PC260 s crossover is an advanced frequency division process that is accomplished by applying a variety of high pass and low pass filters to a predetermined set of crossover points Speaker systems are generally made up of several drivers that are dedicated to a T ROUTING K une ROUT IHG ROUT ING PRES E E CONFI RH LEV 0 0 0 0 A B 1 2 3 4 5 6 DATA PUSH SELECT LEVEL INPLT 1 1 T LEVEL CHi OUTPUT _1 1 xxr PEEP FHA E XOVER 0 0 1 2 3 4 5 6 specific range of frequencies which results in an efficient reproduction of the audio spectrum and a smooth sound The PC260 crossover routes frequencies to the appropriate drivers to accurately reproduce the sound The crossover network can also be used to ensure that low frequency energy is not accidentally routed to the mid range or tweeter drivers that may result in potential damage Available PC260 crossover parameters are Type and Frequency To access the Xover section press the XOVER button and then the EDIT button of the output you want to edit Push the DATA knob to select the parameter to edit and rotate the knob to adjust it 18 PROE L TECHNOLOGY aS
52. ogether with 5 bands of PEQ fully programmable COMPRESSOR LIMITER and up to 600ms of delay Additional features include a fully assignable input output routing and ganging enviromental temperature compensation of delays a GROUPING function and a 1 3 oct RTA with dedicated MIC input with phantom power The SPL Manager specifically designed for the application in fixed installations is a very powerful tool that allows to schedule in 4 different scenes 16 events on each input and output including MUTE level change COMPRESSOR threshold change and PRESET change These events can be then performed automatically according to the internal real time clock of the unit PC260 can be remotely controlled with PRONET software through the USB port on the front panel and it can be included in a PRONET network through the two RJ 45 connectors on the rear panel IMPORTANT To achieve optimum performance and guard against damage to the processor your sound system or yourself please read understand and follow all of the directions contained in this manual Failure to do so may result in improper performance loss or injury FRONT PANEL 1 USB port USB port for connection to a PC running Windows XP Vista Seven 32 or 64 bit Using the PRONET application the PC260 can be operated edited and configured for installation with an easy to use intuitive interface Any available firmware updates downloadable from www proel com can be loaded via the USB port as w
53. omputer then loaded in the PC260 unit using the PRONET software refer to its documentation for details Offline RUN TIME MODE The run time mode is the normal operating mode of the PC260 then after turn on the unit the following screen appears The display shows the main status of the unit name preset SPLM status routing real time clock All control buttons are active The PC260 features four types of preset DEAFAULT Presets The PC260 comes with one Default preset identified by a D letter after the number This is a preset with all the parameters in Default position which can be used as a starting point for creating your own settigns from scratch or for RESETTING and existing User or Protected preset FACTORY Presets 7 The PC260 comes with Factory presets including the settings for PROEL loudspeaker systems A factory preset is identified by F letter after the number Only the the input processing parameters can be edited in Factory presets which is indicated by a KEY symbol in the first line of the display When a input parameter is modified an asterisk appears after the F letter on the display indicating that the preset is edited Modified Factory presets cannot be saved in the Factory locations but only in User location in this case they become Protected presets IMPORTANT always be sure to recall the Factory preset for the right loudpeaker system and to make the right output connections o
54. r 12 dB slope 20Hz 50Hz 100Hz 200Hz 500 2 1kHz 2kHz SkHz 10kHz 20kHz High shelf A shelf filter has three parameters that determine the frequency response frequency gain and slope In a High shelf filter the frequencies above its frequency setting can be boosted or cut The extent of width of the filter s transition band is the Slope it can be fixed at 6 or 12dB or vary in this range The graph shows the response at 1KHz 15dB or 15dB 6 or 12 dB slope Res Low pass A resonance low pass filter has two parameters frequency and Q This is a low pass filter with 12dB slope and it can be used alone or in conjuction with a xover filter using the variable Q to model the response in the cut off frequency range The graph shows the response at 1KHz Q at min or max value Bandpass A bandpass filter has two parameters frequency and Q This is a typical band pass filter with 6dB slope Note that the response 1 fundamentally NOT a flat topped response so it is not constructed from a high pass and low pass The graph shows the response at 1KHz Q at min or max value
55. rature indicates that it should not be disposed with other household wastes at the end of its working life To prevent possible harm to the enviroment or human health from uncontrolled waste disposal please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources Household users should contact either the retailer where they purchased this product or their local government office for details of where and how they can take this item for environmentally safe recycling Business users should contact their supplier and check the terms and conditions of the purchase contract This product should not be mixed with other commercial wastes for disposal electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of A maintenance Servicing instructions in the literature accompanying the appliance The information contained in this publication has been carefully prepared and checked However no responsibility will be taken for any errors All rights are reserved and this document cannot be copied photocopied or reproduced in part or completely without
56. reshold REDU METER This is a meter showing when and how much the compressor limiter is reducing the audio signal It works only when the dynamic processor is enabled BYPASS is OFF GAIN Gain control lets you to compensate the overall level reduction of a compressed signal This parameter is not available when the dynamic processor is set as limiter BYPASS This parameter enables or disables the dynamic processor OUT GRAPH This graph shows the dynamic curve i e the relation between the input level and output level Minimum frequency HPF Attack time max 15 6 Hz 62 5 Hz 525 He 125 hz 125 Hz 250 Hz 250 Hz 500 Hz 500 Hz 2K Hz 2K Hz 20K Hz PFeOEL lt 25 INFORMATION NOTE Speaker protection setting Replacing a professional speaker is an expensive cost and reducing this risk is good so many users want to know how to set a limiter properly for the speaker protection The PC260 processors like other loudspeaker processors can protect the speaker from excessive heating using the OUTPUT LIMITER though it is not possible to protect a speaker from every possible cause that occurs to damage it such as over excursion very unnatural sound signals or an erroneous cross over filter setting To protect a speaker from over heating you have to know some technical data 1 The speaker power handling Paes measured with the AES2 1984 r2003 standard AES Recommended Practice Specification of loudspeaker compo
57. s only the paramaters no the audio signal DEVICE NAME This page is where the PC260 name is set Push the DATA knob to navigate then rotate the DATA knob to scroll the value confirm all data pressing SETUP SETUP DEVICE 260 ROCKCCRFE _ CAFE PRES SETUP T CHANNEL NAME This page is where a name can be assigned to each chann SETUP CHANNEL _ Bee EH LEFT 16 PROELMA FIRMWARE UPDATE This page is where the PC260 Firmware can be updated from USB port To update the firmware a PC with PRONET software installed is required Both the firmware and the PRONET software can be downloaded from proel web site www proel com In the PRONET documentation you can find the instruction to update the firmware Press ESC or PG UP DW buttons to escape from this page press SETUP to proceed with the firmware update the following screen appears on the display Now the PC260 still waiting the PRONET program to send the firmware thru USB port if you want to escape from this procedure without update the firmware you have only a solution TURN OFF and TURN ON again the PC260 LOCK BOOT MODE FIRMW ARE UPDATE STATUS This page is where the PC260 can be locked or unlocked by the installer operator There are four LOCK levels available indicated by a padlock in the first line of the display FULL EDI
58. s shown below The EZCurve type is based on the Proel s EZCurve analog Graphic Equalizer s response It has a Q that varies with cut boost applied wider Q at lower values of cut boost resulting in a smoother response when smaller amounts of EQ are added 20 PF02OEL The response has a fixed 0 giving more precise control and offers the flattest response when boosting groups of adjacent faders The Type2 response has a fixed Q too like but it has a different reference and a lower value of the Q shape this gives a different response from 1 equalization 500Hz 1kHz 2kHz SkHz 10kHz Type 2 1 KHz 3 6 12 dB 500 1kHz 2kHz SkHz 10kHz Type 1 1 KHz 3 6 12 dB SUUHZ 1kHz 2kHz SkHz 10kHz EZcurve 1 KHz 3 6 12 dB SUUHZ 1kHz 2kHz SkHz 10kHz I SUUHZ 1kHz 2kHz SkHz 10kHz 500 1kHz 2kHz SkHz 10kHz EZcurve 1 KHz 1 25 KHz 3 6 12 dB Type 1 1 KHz 1 25 KHz 3 6 12 dB 2 1 KHz 1 25 KHz 3 6 12 dB parametric
59. sider only the second case with an amplifier with a fixed gain Calculate the limiter setting using the following equation LIMIT apy 20 10810 GAIN As example we presume to have a speaker with the following data Paes 300 W Znom 4 OHM Y 300 x 4 LIMIT apy 20 lt 10510 0775 32 1 dBu So we choose an amplifier capable of 500 W with a load of 4 ohm for channel with a fixed of GAIN 32 dB Please note that in some cases you can obtain a negative result SOME TIPS o protect the high frequency drivers from dangerous feedbacks live environments we suggest to set the limiter 3 dB under the calculated value some speaker systems you can note that the low mid frequencies are limited before the high mid frequencies This can be due to the fact that the program reproduced is more rich in low frequencies which usually have a higher energy contents than in high frequencies so the LF limiter is activated before and more often than the HF limiter In this cases the system sound can become very harsh and to restore a natural sound you ll need to set the HF driver limiter some dB under the calculated value usually 3 6 dB e Often using bridged amplifier you have to add 6 dB to your amplifier GAIN see the amplifier manual 26 PF02OEL a PC260 has a unique feature called Sound Pressure Level Management specifically designed for the use of the processor in FIXED INSTALLATIONS Using the SP
60. t level Meters 8 will indicate incoming signal level and whether attenuation is required 26 GND LIFT switch This switch lift the ground of the balanced audio inputs from the earth ground of the PC260 If you have HUM noise problem on the whole loudspeaker system attached to your PC260 try to change the position of this switch Please note that to have an effect all cables must be balanced 12 PROEL 2 hot cold 1 ground INPUT Balanced male XLR ground cold Audio Cables Always use correctly shielded audio cables when connecting to the PC260 Balanced Input Output Connections Recommended To minimize induced noise caused by audio cables and to maximize the length of cables used balanced connections are strongly advised for both Inputs and Outputs The XLR jacks provided on the PC260 are configured as pin 1 ground pin 2 hot 4 pin 3 cold Cable shielding must be connected to pin 1 Un balanced Input Output Connections Not recommended 2 hot Un balanced connections can be made to the PC260 although induced noise from cabling may be increased Cables should also OUTPUT be less than 15 bm in length Unbalanced connections can be 6dB lower in level as well To match the audio level obtained with a balanced connection it is necessary to tie pin 3 to ground at the XLR connector This may increase noise Balanced female XLR Digital Input
61. t usually is too much expensive The CAT5 or CAT6 net cables are readily available in any computer dealers The NEUTRIK NE8MC ethercon carrier is available from PROEL Pin T568A Pair T5686 Pair Wire T568A Color T568B Color Pins on plug face socket is reversed ie 2 ti P white green stripe whiteforange stripe 2 3 2 ring qu ns AU Sm Pin Position green solid orange solid c Tm 3 Ia 3 t x P white arange stripe white green stripe BEI 1 blue solid blue solid x MI 1 tip white blue stripe white blue stripe _ s 3 rina orange solid green solid We 7 r j lwhite brown stripe white brown stripe _ E 4 ring brown solid brown solid 13 PC260 has two operation modes REMOTE MODE using PRONET software Connect the unit to a PC running Windows and PRONET software by means of USB port or NETWORK port push the Online button on the PRONET button bar and after some seconds the following screen appears on the display now the PC260 is controlled remotely by the PC and all controls are disabled if you want to return in run time mode push the offline button pet zT REMOTE MODE see the further PRONET CONFIGURATION section for how to build in details a PRONET network Refer to the PROEL web site www proel com to download the PRONET software and documentation The PROEL LOUDSPEAKER LIBRARIES can be downloaded from the web site in your c
62. te when the SPLM is activated the PC260 is forced in the TOTAL LOCK status PROELMA SETUP LOCK OS Full Edit PRESMORD SETUP TO COMFIRH Ea LOCK B partial 17 PROCESSING MENU The following diagram shows the internal processing structure of the PC260 COMP x COMP MASTER B LEVEL LIMITER GEO DELAY LIMITER LIMITER OUT LIMITER OUTS LIMITER OUTS LIMITER OLITG Using the PROCESSING menu in conjuction with EDIT and PG UP PG DW buttons all the above sections can be edited EDITING processing menu parameters ROUTING signal routing This page is where each output channel is assigned to input channel A or B or to the sum of A B channels Press the ROUTING button to access then push the A B DATA knob to select the output to edit and rotate the knob to select the value Confirm all data pressing ROUTING again or press ESC to exit without changing the routing LEVEL levels and phase polarity The LEV section is used to adjust input and output levels Press the amp LEVEL button and the EDIT button of the channel you want to edit Push t3 the DATA knob to select the parameter to edit and rotate the knob to adjust it The LEVEL value can vary from 30dB to 6dB for the input channels and from 30dB to 15dB for the output channels The TRIM value is present only in the output channels and can be set between 6dB t
63. therwise loudspeaker system damages could be occur PROTECTED Presets 7 When you store a modified factory preset in a user prese it becomes a Protected preset which is identified by a P letter after the number As for the Factory preset only the input processing parameters can be edited which is indicated by a KEY symbol in the first line of the display When input parameter is modified an asterisk appears after the letter on the display indicating that the preset is edited Usually Protected presets are created when you need to modify the input parameters of a Factory preset and then save it USER Presets A User preset is identified by a U letter after the number When the unit is set in FULL EDIT MODE see further in this manual both input and output parameters can be edited in a User presets When a input parameter is modified an asterisk appears after the U letter on the display indicating that the preset is edited PF02OEL a To recall a preset press the front panel RCL button The display shows the RECALL PRESET menu and the current preset in the list of those available in the internal memory Using the DATA knob scroll the preset list and select the preset to be recalled Valid presets will display the preset name empty presets will not display any name Select a valid preset and push the DATA knob to confirm The display will prompt Push DATA to confirm ESC to abort Press the DATA knob to confirm
64. tion and must be connected always to a mains socket outlet with a proctetive earth connection the third grounding prong e Before connecting the product to the mains outlet make certain that the mains line voltage matches that shown on the rear of the product a tolerance of up to 15 is acceptable e To disconnect these equipment from the AC Mains disconnect the power supply cord plug from the AC receptacle CHECK THE CONDITION OF THE PROTECTION FUSE ACCESSIBLE OUTWARD ONLY WITH THE APPARATUS SWITCHED OFF AND DISCONNECTED FROM THE MAINS LINE OUTLET e REPLACE THE PROTECTION FUSE ONLY WITH SAME TYPE AS SHOWN ON THE PRODUCT e IF AFTER THE SUBSTITUTION THE FUSE INTERRUPTS AGAIN THE APPARATUS WORKING DO NOT TRY AGAIN THEN CONTACT THE PROEL SERVICE CENTER w 7 TECHNOLOGY aS PRESET RECALL DATAVALUE SELECT PAGE USB PORT DISPLAY AND SAVE AND INPUT SCROLL CO PROELw u PG UP 40 63 100 160 250 400 630 1 0K 1 6K 25K 4 0K 6 3K 10K 16K e DATA WB PC260 digital loudspeaker controller Save PUSHSHECT PGDW AC POWER TWORK e E QE E3 on gt ria AFS EBUIN QUT IN 6 5 DIGITAL AUDIO TERMINATE PRONET NETWORK INPUT BUTTON CONNECTIONS OUTPUT CONNECTIONS MAINS AC POWER PROEL A CHANNEL SELECT BUTTONS CHANNEL MUTE EXTERNAL MIC BUTTONS INPUT FOR RTA Gust ESCAPE BUTTON PROCESSING MENU LED METERS MUTE 6 6 ROUT
65. tons Each input channel has a lighted Mute button Pressing the Mute button turns off the input of that channel The button lights red as an alert Press the Mute button again to restore the output channel s signal 10 A B input EDIT buttons Use these buttons to access the editing of the input s parameter the buttons light blue when pressed Pressing these buttons while in Run time mode you enter the LEVEL menu the LEV button also lights where you can adjust the level of the selected input If a processing button such as DELAY DEQ DYN has been previuosly selected pressing the edit button you choose the channel to process 11 Output meters Each output channel has a four segment VU meter Meter withdrawal point can be pre or post mute as set on SETUP page The red segment indicates that limiting is being applied to the output channel if the limiter is engaged or if the limiter is disabled indicates clipping of the D A converters which should be avoided by adjusting the Output Level It is important to understand how the meters work and what they are displaying The Output Levels are displayed as dB to Limiter Threshold In other words the meters will display the headroom between the output level and the limiter threshold When viewed in conjunction with the gain reduction meters in the dynamic menu of the selected channel use DYN button this provides a complete display of level and headroom before and after limiting
66. tting and cabling e Are you sure your signal cables works properly check it using a cable tester or replacing with a new one Distorted Sound e Input signal level is too high Engage the 6dB PAD button on rear panel and or turn down your level controls Different channel e Check if are using a balanced cable for one channel and an unbalanced one for the other as this would cause level considerable difference in channel levels Noise Hum e Enable GND LIFT button on rear panel Whenever possible preferably use only balanced cables Unbalanced lines may also be used but may result in noise over long cable runs e Sometimes it helps to plug all audio equipment into the same AC circuit so they share a common ground Proel PC260 complies with directive 2004 108 EC EMC as stated in EN 55103 1 and EN 55103 2 standards and with directive 2006 95 CE LVD as stated in EN 60065 standard 6 PF02OEL a PACKAGING SHIPPING AND COMPLAINT e This unit package has been submitted to ISTA 1A integrity tests We suggest you control the unit conditions immediately after unpacking it f any damage is found immediately advise the dealer Keep all unit packaging parts to allow inspection Proel is not responsible for any damage that occurs during shipment e Products are sold delivered ex warehouse and shipment is at charge and risk of the buyer e Possible damages to unit should be immediately notified to forwarder Each co
67. ure levels it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to n prevent permanent hearing loss if exposure is in excess of the limits set forth here Keep your s attention that childrens and pets are more suscetible to excessive noise levels Very loud classical music eid 7 e Incase of fault or maintenance this product should be inspected only by qualified service personnel when There is a flaw either in the connections or in the supplied connecting cables Liquids have spilled inside the product The product has fallen and been damaged The product does not appear to operate normally or exhibits a marked change in performance The product has been losted liquids or gases or the enclosure is damaged e Do not operate on the product it has no user serviceable parts inside refer servicing to an authorized maintenance centre No Power e The device s POWER switch is off Make sure the mains AC outlet is live check if LED PWR lights up e Make sure the mains plug is securely plugged into mains AC outlet e 5 the MUTE buttons dis engaded e 5 the INPUT METER LED illuminated If not check if your signal level is too low or check the signal cable mixer and other equipment se

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