PDF EL-112 User Manual
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1. REAL Innovation EL 112 Four Band Parametric Equalizer User Manual Issue 0 3 ARREL Audio SAFETY INSTRUCTIONS AN WARNING Always follow the precautions listed below to avoid any possibility of serious injury or even death from electrical shock short circuiting damages fire or other hazards These precautions include but are not limited to the following e Do not expose the instrument to liquids and rain Do not use it near water or in damp or wet conditions or place containers on it containing liquids If any liquid seeps turn off the power and unplug the power cord from the AC outlet e Do not put burning items such as candles on the unit A burning item may fall over and cause a fire _ This instrument contains no user serviceable parts Do not open the instrument or attempt to disassemble or modify the internal circuit Never insert or remove an electric plug with wet hands Check the electric plug periodically and remove any dirt or dust which may have accumulated on it Do not place the power cord near heat sources such as heaters or radiators and do not excessively bend or otherwise damage the cord place heavy objects on it or place it in a position where anyone could walk on trip over or roll anything over it AN CAUTION Always follow the precautions listed below to avoid any possibility of serious injury or even death from electrical shock short circuiting damages fire or oth2. Panel Page 10 EL 112 User Manual Issue 0 3 ARREL Audio APPENDIX D Back Panel OUTPUT GROUND D TE 1 GPPMXTENMAL eem SPARE OUTPUT LOAD INTERNAL LOAD d m 1h Tie GROUND PHASE PHASE nun FIG 8 EL 112 Back Panel EL 112 User Manual Issue 0 3 Page 11 ARREL Audio TECHNICAL SPECIFICATIONS ELITE SERIES MODULAR CABINET SPECIFICATION MECHANICAL SPECIFICATION Construction T9 2U rack mount metal box 000 Number of Modules The EL TE Series unit can be factory assembled with one or two EL TE Serles modules BERE Dimensions 483 mm 197 88 90 mm 1 75 1 RU 225 mm 8 867 Output Electronically balanced i Output Impedance 100 Q minimum external load 600Q Output Level Level 4dBu Max 28 dBu Bandwidth 5 200 000 Hz 1dB perfect square wave up to 20 KHz lt 0 005 typical 0 001 LO Frequency Range 20 200 Hz MID1 Frequency Range 100 1000 Hz MID2 Frequency Range 500 5000 Hz HI Frequency Range 2000 20000 Hz The filters are bell shaped Left Right level POTs 10 10dBu Front Panel Controls True Bypass button with LED Power On Switch LO 20 200 Hz MID 1 100 1000 Hz MID 2 500 5000 Hz Front Panel Equalizer Controls HI 2000 20000 Hz for each channel Emphasis De Emphasis switch off Emphasis De Emphasis continuous rotary knob range 0 14 dB for each band Q control continuous rotary knob For each ch
3. packaging and or accompanying documents means that used electrical and electronic products should not be mixed with general household waste For proper treatment recovery and recycling of old products please take them to applicable collection points in accordance with your national legislation and the Directives 2002 96 EC By disposing of these products correctly you will help to save valuable resources and prevent any potential negative effects on human health and the environment which could otherwise arise from inappropriate waste handling For more information about collection and recycling of old products please contact your local municipality your waste disposal service or the point of sale where you purchased the items For business users in the European Union If you wish to discard electrical and electronic equipment please contact your dealer or supplier for further information Information on Disposal in other Countries outside the European Union This symbol is only valid in the European Union If you wish to discard these items please contact your local authorities or dealer and ask for the correct method of disposal EL 112 User Manual Issue 0 3 Page 2 ARREL Audio ARREL Audio Contacts ARREL Audio Via A Mondadori 7 00128 Rome Italy Tel 39 06 506 2017 Fax 39 06 5062017 Info info arrel audio com Web www arrel audio com Support http www arrel audio com support ARREL Audio is continuously
4. unbalanced connection for the line out there is a bal unbal switch on the back panel of the EL 112 follow the instructions in APPENDIX A The EL 112 is composed by a 2U rack module equipped with the power supply and two equalizer modules Each module is completely independent and can be inspected separately four screws are used to fix the modules A chassis of the Classic Series can be configured with different modules of the Classic Series for example a unit composed by a mic preamplifier and a single equalizer to implement an advanced channel strip The EL 112 is an innovative and flexible equalizer ready to take its place in any high profile recording mastering broadcast and live activities ARREL Audio products are designed and manufactured in Italy Housing and Rack Mounting The EL 112 has been designed to be compliant with a 2U rack No specific air conditioning is required for the racks provided that there is a free flow of air through the rack from front to back and the temperature is maintained in the operating range Consequently the racks may be stacked EL 112 User Manual Issue 0 3 Page 5 ARREL Audio EL 112 Front Panel Controls and Operations POWER SUPPLY SWITCH ELITE SERIES The EL 112 power on switch is located in the right part of the front panel The power on state is indicated by the illumination of the switch Fig 1 INPUT SECTION GAIN CONTROL The input section gain control knob is located in t
5. 12 User Manual Issue 0 3 Page 4 ARREL Audio INTRODUCTION The ARREL Audio EL 112 is an advanced 2 channel four bands equalizer developed to meet the demands of professional recording and mastering engineers The EL 112 features 4 parametric bands Special analog design techniques have been used for precise control of the sound structure down to the minimum details The EL 112 is based on Livio Agentin s patented single stage parallel filters This innovative phase coherent EQ design offers the lowest distortion noise specifications not available on similar units on the market The EL 112 input section provides a continuous input level control in the 10 10 dB range A peak level detector circuit indicates when the output level is 6 dB with respect to the saturation level The equalizer can be excluded by a true bypass button The filtering section has 4 bands LO MID1 MID2 HI For each band three rotary knobs controls the central frequency the gain and the Q The Emphasis De Emphasis is assisted by a three position switch Emphasis off De Emphasis In this way the full 300 degrees range of the potentiometer is available for the emphasis de emphasis allowing a very accurate control of the equalization in the range 0 14 dB The Q is controlled by a potentiometer To obtain an outstanding audio quality no servo amplifiers are used in the EL 112 so IT IS NOT POSSIBLE TO UNBALANCE THE LINE OUT OF THE EL 112 If you need an
6. annel 1 xred LED By Pass Front Panel Indicators 1 xred LED Peak Meter 1 x red LED De Emphasis 1 x green LED Emphasis Hear Panel Line In Connectors 2 x Balanced XLR female Rear Panel Line Output 2 x Balanced XLR male Connectors EL 112 User Manual Issue 0 3 Page 12 ARREL Audio EL 112 User Manual Issue 0 3 Page 13
7. er hazards These precautions include but are not limited to the following Do not connect the instrument to an electrical outlet using a multiple connector Doing so can result in lower sound quality or possibly cause overheating in the outlet itself When removing the electric plug from the instrument or an outlet hold the plug itself and not the cord Pulling by the cord can damage it Remove the electric plug from the outlet when the instrument is not to be used for extended periods of time or during electrical storms Do not place the instrument in an unstable position where it might accidentally fall over e Before moving the instrument remove all connected cables When setting up the product make sure that the AC outlet you are using is easily accessible If some trouble or malfunction occurs immediately turn off the power switch and disconnect the plug from the outlet Even when the power switch is turned off electricity is still flowing to the product at the minimum level When you are not using the product for a long time make sure to unplug the power cord from the wall AC outlet Use only the stand rack specified for the instrument When attaching the stand or rack use the provided screws only Failure to do so could cause damage to the internal components or result in the instrument falling over nu information for Users on Collection and Disposal of Old Equipment This special symbol on the products
8. he INPUT section of each channel A continuous level control in the 10 10 dB range is obtained by rotating the corresponding knob Fig 2 INPUT SECTION BY PASS SWITCH The equalizer can be excluded by a true bypass button red LED indicator Push the button to by pass the equalizer red LED on Push again to Fig 1 Power Supply switch insert the equalizer red LED off Fig 2 INPUT SECTION PEAK INDICATOR A peak level detector red LED on circuit indicates when the output level is 6 dB with respect to the saturation level Fig 2 The red LED on do not means saturation but must be interpreted as a warning indicating you reaching the saturation level PARAMETRIC EQUALIZER EL 112 Fig 2 Input Section Controls EL 112 User Manual Issue 0 3 Page 6 ARREL Audio EQ SECTION GENERAL Each control described in the EQ section is applicable to the four bands LO MID1 MID2 HI of each channel of the stereo equalizer EQ SECTION Q CONTROL KNOB Turn the Q knob in order to select the required Q value Fig 3 EQ SECTION GAIN CONTROL KNOB AND SWITCH Emphasis the switch must be positioned in the position green LED ON In this position the full 300 degrees range of the potentiometer is available to select the emphasis gain allowing a very accurate control of the equalization in the range 0 414 dB Fig 3 PARAMETRIC EQUALIZER Fig 3 Equalizer Section Controls De emphasi
9. s the switch must be positioned in the position red LED ON In this position the full 300 degrees range of the potentiometer is available to select the de emphasis gain allowing a very accurate control of the equalization in the range CHANNEL B 0 14 dB Fig 3 Off the switch must be positioned in the off position OUTPUT INPUT LED off In this position the potentiometer is excluded Fig 3 EQ SECTION CENTRAL FREQUENCY Turn the frequency knob in order to select the required central frequency value Fig 3 o EL 112 Back Panel Controls and operations On the back panel of the EL 112 the XLR input and output connectors are located Fig 4 Bal Unbal switch Moreover each output is equipped with a Bal Unbal switch Fig 4 EL 112 User Manual Issue 0 3 Page 7 ARREL Audio APPENDIX A External connections ACL AUDIO _ WIRING EL 112 LINE INPUT XLR On the back 3 1 Ground 2 PHASE 4 i 3 PHASE Balanced line It can be unbalanced MAIN OUTPUT XLR On the back 3 1 Ground 2 PHASE 3 Balanced line only Use the switch to connect unbalanced cables FIG 5 EL 112 external connections EL 112 User Manual Issue 0 3 Page 8 ARREL Audio APPENDIX B Half Front Panel c x l N u 3 4 23 lt u FIG 6 EL 112 half front Panel EL 112 User Manual Issue 0 3 Page 9 ARREL Audio APPENDIX B Front Panel FIG 7 EL 112 half front
10. working to the improvement of its systems and related documentation In any case we reserve the right to change the specifications without notice but in respect to the current legislation Disclaimer The information contained in this manual has been carefully checked and we believed is accurate at the time of publication In any case we do not assume any responsibility for inaccuracies errors or omissions nor any liability for any loss or damage resulting either directly or indirectly from use of the information contained in this manual EL 112 User Manual Issue 0 3 Page 3 ARREL Audio TABLE OF CONTENTS TABLE OF CONTENT G a E E E EE E 4 INTRODUCTION WE 5 PIOUS ING PEREK MOUNN A D EL 112 Front Panel Controls and Operations 8883 nennen 6 POWER SUBDIY SWIICH 6 Input Section gain Control ME 6 Input section by pass switch 6 Input seclion peak NACO E 6 H 00 e En ET NN T Uu 7 Eq section Q control knob nnn nnne nnns 7 Eq section gain control knob and switch A 7 BO SECHONE CENTRAL Fre CUEING E 7 EL 112 Back Panel Controls and operations ss ss sseennnnnenznnnnnnzznnznnnnnznznnnenznnznznnznnnzna 7 BEFENDIXA Extemal ee nee Lu 8 APPENDIX B Half Front Panel eese 9 AP FENDA BFO PANI EE 10 APPENDIX D Back Panel E 11 TECHNICAL SPECIFICATIONS 12 EL 1
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