PDF CL-125/2 User Manual
Contents
1. REAL Innovation CL 125 2 Dual Mic Line Preamplifier 18 12 6 0 6 ARREL o CL 125 2 eee ees O T 48V N PHASE User Manual Issue 0 1 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 Never insert or 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 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 A CAUTION Always follow the precautions listed below to avoid any possibility of serious injury or even death from2. Fig 1 in order to select the required amount of gain for either the mic input or the Line input The gain range if the mic input is activated is 66 dB If Line input is activated the range is 30 dB LO CUT SWITCH Push the button to activate the high pass filter red LED on The filter cut off frequency is 80 Hz 12 dB Oct Press again to switch off the filter red LED on HI CUT SWITCH Push the button to activate the low pass filter red LED on The filter cut off frequency is 8 KHz 12 dB Oct Press again to switch off the filter red LED on PHASE SWITCH 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 LEVEL INDICATOR The output level Indicator is based on a 10 LED Bargraph 7 x green LEDs and 3 x red LEDs that measures in the range 6 21 dBu The resolution in 1 5 dB per step CL 125 2 User Manual Issue 0 1 Page 6 ARREL Audio APPENDIX A Connections AI EL AUDIO WIRING CL 125 2 LINE INPUT Mono Jack 1 4 Can be used Stereo Jack instead Mono Jack 1 4 Stereo Jack 1 4 q O q O PHASE PHASE GROUND GROUND GROUND MICROPHONE INPUT XLR On the back 3 1 Ground 2 PHASE S 3 PHASE Balanced line only dont connect unbananced lines MAIN OUTPUT XLR On the back 3 1 Ground 2 PHASE 2 PHASE Balanced line o
3. on NU channel Rear Panel Controls Wien switch on every channel on off switch Rear Panel Rear Panel Input Connectors Rear Panel Input Connectors Balanced XLR female 0000000000 XLR female Rear Panel Output Balanced XLR male Conneciors CL 125 2 User Manual Issue 0 1 Page 10
4. order to protect your microphones CL 125 2 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 ARREL Audio products are designed and manufactured in Italy Housing The CL 125 2 is contained in a half rack metal box 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 CL 125 2 User Manual Issue 0 1 Page 5 ARREL Audio CL 125 2 Front Panel Controls and Operations INPUT SOURCE SELECTION The CL 125 2 input stage is based on a differential amplifier so it is electronically balanced If the Line In 1 4 jack is not inserted the mic input is activated the insertion of the Line In jack disconnects the mic input Fig 1 Due to its very high dynamic range the ARREL Audio CL 125 2 does not require any input PAD switch PHANTOM POWER SWITCH 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 Fig 1 A special circuit allows the connection of microphones even if the unit is turned on with the Phantom Power activated um See ARREL 3 N zum Sen CL 125 2 e eege Fig 1 CL 125 2 Front panel GAIN CONTROL KNOB Turn the gain knob
5. 2 mic preamplifier has been conceived to offer to the professional user a unit that combines high reliability rugged design audio quality versatility and ease of use CL 125 2 is perfect for recording every kind of music from classic pop rock electronic and in all the situations where maximum sound quality and special attention to dynamic range and signal to noise ratio is needed The CL 125 2 technical specification shows that it is the perfect audio system for actual digital recording 24bit 192kHz environments where superior performance is required CL 125 2 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 any saturation Even if the input stage of the CL 125 2 111 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 Moreover a special circuit allows the connection of microphones even if the unit is turned on with the Phantom Power activated in any case we do not recommend this practice in
6. electrical shock short circuiting damages fire or other hazards 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 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 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 im Information for Users on Collection and Disposal of Old Eq
7. l audio com support ARREL Audio is continuously 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 the 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 CL 125 2 User Manual Issue 0 1 Page 3 ARREL Audio TABLE OF CONTENTS SAFETY INSTRUCTIONS aaa rara rara 2 ARREL Audio Contacts aaasssesinsasisacasicaeaasisisicanina ano NENNEN NRNRNENRNRNRNNNN NNN N NENNEN e 3 TABLE OF CONTIENTS aaa 4 INTRODUCTION aaa aaa aaa aaa 5 FOGS a E RR 5 CL 125 2 Front Panel Controls and Operations 6 input source e ir RR O RR E 6 Phantom Power ewitch r rr nn nn nn rn nn nnznrnznznzzzzzzzzzzn 6 Gain Control knob aaa KEEA KE EE Inn aaa arara 6 LOS CUT SWIC EE 6 HI CUT switch aaa aaa aaa 6 ASS SC E EEEE 6 0 BI Te e a a RA A A A 6 APPENDIX A CGonnechons aaa 7 APPENDIX B Front PARIS oca Galo sadia Toa ud ud da 8 APPENDIX C Back Panel 9 TECHNICAL SPECIFICATIONS aaa 10 CL 125 2 User Manual Issue 0 1 Page 4 ARREL Audio INTRODUCTION The ARREL Audio CL 125
8. nly Switch for unbananced lines FIG 1 CL 125 2 Connections CL 125 2 User Manual Issue 0 1 Page 7 ARREL Audio APPENDIX B Front Panel FIG 3 CL 125 2 Front Panel CL 125 2 User Manual Issue 0 1 e G U 4 LI c em d d 18 12 6 0 6 18 42 6 0 6 CL 125 2 2 e 0 000 8 V Page 8 ARREL Audio APPENDIX C Back Panel d A BAL UNBAL 6 dB e OUT c d 2 m 2 23 S e ARKEL CE AL 125 2 Fig 4 CL 125 2 Back Panel CL 125 2 User Manual Issue 0 1 Page 9 ARREL Audio TECHNICAL SPECIFICATIONS 100V 240V 10 50 60 Hz D air 70 dB range rotary knob control p Max input level 20 dBu internal limited to 12 dBu Line Input Unbalanced Impedance 47 KO Line Gain 30 dB range rotary knob control Level 0 30 dBu Max 23 dBu Bandwidth 5 200 000 Hz 1dB perfect square wave up to 20 KHz Distortion Noise lt 0 003 typical 0 001 Low Cut Filter 80 Hz 12 dB Oct High Cut Filter 8 KHz 12 dB Oct Output Electronically Balanced P Level 4 dB Max 28 dBu 48V Phantom Power button Front Panel Controls Phase Reverse button Front Panel Front Panel Input Connectors Front Panel Input Connectors 1 4 TRSjack TRS 1 4 TRSjack Level Indicator 10 LED Bargraph 7x green 3x red 1 5 dB Front Panel Indicators step 4x red LEDs 48V Phantom Power Hi Cut Lo Cut Phase Rear Panel Rear Panel Controls BAL UNBAL switch
9. uipment This special symbol on the products 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 CL 125 2 User Manual Issue 0 1 Page 2 ARREL Audio ARREL Audio Contacts ARREL Audio Via A Mondadori 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 arre
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