PDF EL-111 User Manual
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1. ARREL Audio products are designed and manufactured in Italy EL 111 User Manual Issue 0 3 Page 5 ARREL Audio Housing and Rack Mounting The EL 111 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 mav be stacked EL 111 User Manual Issue 0 3 Page 6 ARREL Audio MIC Fig 1 Power Supply switch LINE H Fig 2 Line in section EL 111 Front Panel Controls and Operations POWER SUPPLV SWITCH The EL 111 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 LINE MIC SELECTION SWITCH The line in mic input between the line in and mic sections of each channel Fig 2 LINE GAIN CONTROL KNOB The line in gain control knob is located in the line in section of each channel A continuous level control in the 0 30 dB range is obtained by rotating the corresponding knob Fig 2 LINE INPUT TRS JACK Insert a 1 4 TRS jack in the female connector on the front panel of the EL 111 The input is unbalanced and the impedance is 47 KO Fig 2 If a balanced line is connected to the Line Input it will be automaticallv unbalanced cold connected to ground MIC GAIN CONTROL KNOB The mic gain co2. REAL Innovation EL 111 Dual Mic Line Preamplifier User Manual Issue 0 3 ARREL Audio SAFETY INSTRUCTIONS A 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 e This instrument contains no user serviceable parts Do not open the instrument or attempt to disassemble or modify the internal circuit e Neverinsertor remove an electric plug with wet hands e Check the electric plug periodically and remove any dirt or dust which may have accumulated on it e Do not place the power cord near heat sources such as heaters or radiators and do not excessivelv bend or otherwise damage the cord place heavv objects on it or place it in a position where anvone could walk on trip over or roll anvthing over it A 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 other hazards
3. These precautions include but are not limited to the following e 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 e Whenremoving the electric plug from the instrument or an outlet hold the plug itself and not the cord Pulling by the cord can damage it e Remove the electric plug from the outlet when the instrument is not to be used for extended periods of time or during electrical storms e Do not place the instrument in an unstable position where it might accidentally fall over e Before moving the instrument remove all connected cables e 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 e When you are not using the product for a long time make sure to unplug the power cord from the wall AC outlet e 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 imm information for Users on Collection and Disposal of Old Equipment This special symbol on the products packaging and or ac
4. 111 modular mic line preamplifier conceived for professional user combines high reliability rugged design audio quality versatility and ease of use EL 111 is perfect for recording every kind of music from classic pop rock electronic and in all the situations where the maximum sound quality and special attention to dynamic range and Signal to noise ratio is needed The EL 111 technical specification shows that it is the perfect audio system for actual digital recording 24bit 192kHz environments where superior performance is required EL 111 is based on the use of the latest circuit topologies characterized by very low distortion ultra low noise and very wide frequency response The amplifier architecture is based on two high dynamic range gain stages in order to avoid saturation Even if the input stage of the EL 111 could accept input signals up to 20 dBu a special protection circuit limits the input level at 12 dBu in order to prevent any damage The EL 111 extended input dynamic range avoids the necessity of the input pad and the gain is controlled by a single large knob The absence of the input pad means better sonic performances In fact being it an attenuator it deteriorates the sound quality and reduces the signal to noise ratio In the EL 111 the two buttons for phantom power and phase inversion are mounted on a recessed panel in order to avoid accidental operations The EL 111 contains a special circuit that allows the connectio
5. REL Audio APPENDIX A External connections ARKEL AUDIO WIRING EL 111 LINE INPUT Mono Jack 1 4 Can be used Stereo Jack instead Mono Jack 1 4 Stereo Jack 1 4 C O C ime PHASE i PHASE GROUND GROUND GROUND MICROPHONE INPUT XLR On the back 3 1 Ground 2 PHASE 1 2 3 PHASE Balanced line only dont connect unbananced lines MAIN OUTPUT XLR On the back 3 1 Ground 2 PHASE S 3 PHASE Balanced line only Switch for unbananced lines FIG 5 EL 111 external connections EL 111 User Manual Issue 0 3 Page 9 ARREL Audio APPENDIX B Half Front Panel FIG 6 EL 111 half front Panel EL 111 User Manual Issue 0 3 Page 10 ARREL Audio APPENDIX C Front Panel Q U FIG 7 EL 111 front Panel EL 111 User Manual Issue 0 3 Page 11 ARREL Audio APPENDIX D Back Panel A CHANNEL EL 110 120a LLI Z lt lt DESIGNED AND MANUFACTURED IN ITALY CE o CAUTION 220 V 20W FIG 8 EL 111 Back Panel EL 111 User Manual Issue 0 3 Page 12 ARREL Audio TECHNICAL SPECIFICATIONS ELITE SERIES MODULAR CABINET SPECIFICATION MECHANICAL SPECIFICATION 19 2U rack mount metal box The Elite Series unit can be factory assembled with one or two Elite Series Number of Modules modue W 483 mm 19 H 88 9 mm 1 75 1 RU D 225 mm 8 86 PO
6. WER SUPPLY EL 111 AUDIO SPECIFICATION Number of Channels Microphone Input Electronically balanced Input Impedance gt 4 KQ Mictonhone Ca 66 dB range with a continuous rotary knob p Maximum input level 20 dBu internally limited to 12 dBu Level 0 30 dBu Max 23 dBu Electronically Balanced Output Level 4 dBu Max 30 dBu Unbalanced 6 dB Output Impedance 100 Q minimum external load 600 Q Line Gain Pot Microphone Gain Pot Front Panel Controls 48V Phantom Power button Phase Reverse button Mic Line switch Front Panel a 1 4 TRS jack a Electromechanical VU meters with LED backlighting Front Panel Indicators 3 x red LEDs 48V Phantom Power Phase Reverse Peak Level set to 6dB below T Rear Panel Controls Panel Controls BAL UNBAL switches on each output channel s i sSCS switches on each BAL UNBAL switches on each output channel s i sSCS channel ar Para Ra Panel Input Balanced XLR female Mic input onneciors Rear Panel Output Balanced XLR male Line Output Connectors EL 111 User Manual Issue 0 3 Page 13
7. companying 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 correctiv 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 111 User Manual Issue 0 3 Page 2 ARREL Audio ARREL Audio Contacts ARREL Audio Via A Mondadori 7 00128 Rome Italv 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 working to the impr
8. n of microphones even if the unit is turned on with the phantom power activated in any case we do not recommend this practice in order to protect your microphones The Line Input unbalanced is easily accessible from the front panel by a 1 4 TRS jack A switch selects mic or line input A separated knob is provided for the line in gain Ifa balanced line is connected to the line Input it will be automatically unbalanced cold connected to ground The two signal paths mic in and line in are equipped with two independent amplifiers To obtain an outstanding audio quality no servo amplifiers are used in the EL 111 so IT IS NOT POSSIBLE TO UNBALANCE THE LINE OUT OF THE EL 111 lf you need an unbalanced connection for the line out there is a bal unbal switch on the back panel of the EL 111 follow the instructions in APPENDIX A The EL 111 is dedicated due to his absolute sonic level quality to high professional vocal recordings classical instruments high dynamic range instruments such as drums and percussions The EL 111 is composed by a 2U rack module equipped with the power supply and two mic line preamplifier 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
9. ntrol knob is located in the MIC section of each channel A continuous level control in the 10 55 dB range is obtained by rotating the corresponding knob Fig 3 PHANTOM POWER BUTTON Press the button to activate the 48 V Phantom Power red LED on To deselect the Phantom Power press again the button red LED off A special circuit allows the connection of microphones even if the unit is turned on with the Phantom Power activated Fig 3 EL 111 User Manual Issue 0 3 Page ARREL Audio MIC Fig 3 Mic in section CHANNEL B OUTPUT INPUT Fig 4 Bal Unbal switch LINE PHASE BUTTON Push the button to invert the phase of the audio signal by 180 degrees red LED on Press again to switch off the phase inversion red LED off Fig 3 PEAK INDICATOR The peak level detector red LED on indicates when the output level is 6 dB with respect to the saturation level Fig 3 The red LED on do not means saturation but must be interpreted as a warning indicating you reaching the saturation level OUTPUT LEVEL VU METER The electromechanical output level vu meter is calibrated in order to indicate o dB with a 4 dBu output level The vu meter is backlighted EL 112 Back Panel Controls and operations On the back panel of the EL 112 the XLR input and output connectors are located Moreover each output is equipped with a Bal Unbal switch Fig 4 EL 111 User Manual Issue 0 3 Page 8 AR
10. ovement of its systems and related documentation In anv 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 anv case we do not assume anv responsibilitv for inaccuracies errors or omissions nor anv liabilitv for anv loss or damage resulting either directly or indirectly from use of the information contained in this manual EL 111 User Manual Issue 0 3 Page 3 ARREL Audio TABLE OF CONTENTS EK 2 ARRECCAUVGIO CONS E E E EEES 3 TABLE OF CONTENT a 4 INTRODUCTION WEE 5 Housing and Rack Mounting sise 6 EL 111 Front Panel Controls and Operations 7 MO LS SUPDIV SWIC E 7 Line mic selection switch sise 7 Line gain Gontrol KOOD ES ns Ge a 7 RS BORA RS CR na E 7 MIG GAIN CONTO KOL BE 7 Phamom PONS RE 7 Phase button mana ess nee ee ae en eee annees Get een 8 Kieler LQ E 8 Output level vu meter A A KA HAKEEAKEKENEKENENENENENENENEENENEZENEEEZEEETI 8 EL 112 Back Panel Controls and operations VV 8 AFPENDIX A Exlemal CONMECho EE 9 AP Pe NOI B Hall Front IP AME l E E A E EA 10 APPENDIX Front E 11 APPENDIX Back Panel EE 12 TECHNICAL SPECIFICATIONS ccc cecccccceeececeeeeeeeeeeeceeeeeeceesaeeeeesaeeeesaeeeeesaeeeesaaeeeetens 13 EL 111 User Manual Issue 0 3 Page 4 ARREL Audio INTRODUCTION The ARREL Audio EL
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