PDF R-501 User Manual
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1. REAL Innovation R 501 Mic Line Preamplifier User Manual Issue 0 2 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 from electrical shock short circuiting damages fire or other hazards These pr2. Impedance 47 KO Line level 0 30 dBu Max 20 dBu ine Gain 30 dB range with a continuous potentiometer control andwidtn 5 150 KHz dB perfect square wave up to 20 KHz istortion Noise lt 0 003 typical 0 001 ow Cut Filter 80 Hz 12 dB oct selected by a button LED Output Level Electronically Balanced Level 4 dBu Max 25 dBu Z 3 O D O h 48V Phantom Power button Lo Cut button Phase Reverse button 1 4 TRS jack Line Mic switch by line jack insertion Distortion Noise lt 0 003 typical 0 001 S O Controls Connectors Level Indicator 10 LED Bargraph 7x green 3x red 1 5 dB step Range 6 21 dBu 3 x red LEDs 48V Phantom Power Lo Cut Phase Rear Panel Input lies 500 compatible connector Connectors Compliant 500 series rack with PSU and external audio connections Single 500 series rack slot required for each R 501 module imensions Series 500 compatible module 500 g Front Panel Indicators Construction s D O R 501 User Manual Issue 0 2 Page 11
3. protection circuit limits the input level at 12 dBu in order to prevent any damage The R 501 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 the pad degrades sound quality and affects signal to noise ratio The R 501 contains a special circuit that 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 order to protect your microphones The Line Input unbalanced is easily accessible from the front panel by a 1 4 TRS jack the jack insertion excludes the mic input If a balanced line is connected to the Line Input it will be automatically unbalanced cold connected to ground To obtain an outstanding audio quality no servo amplifiers are used in the R 501 so IT IS NOT POSSIBLE TO UNBALANCE THE LINE OUT OF THE R 501 lf you need an unbalanced connection for the line out follow the indications shown in APPENDIX A Three illuminated buttons are provided for Phantom Power Phase inversion LO CUT filtering A LED bargraph 10 LEDs is used to display the output level The R 501 offers a very cool satin finish stainless steel front panel and a semi closed stainless steel enclosure R 501 is dedicated due to his absolute sonic level quality to high professional vocal recordings classical instruments
4. ecautions 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 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 EE Information for Users on Collection and Disposal of Old Equipment This special symbol on the products packaging and or accompanyin
5. ems R 501 User Manual Issue 0 2 Page 6 ARREL Audio R 501 Front Panel Controls and Operations INPUT SOURCE SELECTION The R 501 input stage is based on a differential amplifier so it is electronically balanced If the Line In 1 4 jack is not inserted on the housing on the front panel the mic input is activated the insertion of the Line In jack disconnects the mic input Due to its very high dynamic range the ARREL Audio R 501 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 A special circuit allows the connection of microphones even if the unit is turned on with the Phantom Power activated GAIN CONTROL KNOB Turn the gain knob 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 green LED on The filter cut off frequency is 80 Hz with 12 dB Oct slope Press again to switch off the filter green 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 gree
6. g 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 R 501 User Manual Issue 0 2 Page 2 ARREL Audio ARREL Audio Contacts ARREL Audio Via 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 working to the improvement
7. high dynamic range instruments such as drums and percussions ARREL Audio products are designed and manufactured in Italy R 501 User Manual Issue 0 2 Page 5 ARREL Audio Housing The R 501 Mic Line Preamp Module has been designed to be compliant with the 500 series standard Installation Instructions gt Remove the R 505 module from the packaging gt Turn off the 500 series enclosure and remove mains power gt Find an empty slot in the 500 series rack and remove the 2 fastening screws positioned one on the top of the enclosure and one the the bottom of the enclosure gt Insert the R 505 into the empty slot in the 500 series enclosure Be sure that the rear edge connector on the R 505 module mates correctly with the edge connector of the 500 series enclosure gt Replace the 2 fastening screws through the top bottom holes in the R 505 module and screw into the 500 series enclosure The module must be secured into the enclosure before turning the mains on gt Apply mains power into the 500 series enclosure and turn on gt Connect the microphone audio source or instrument and select the correct settings gt The module is not designed to be hot plugged so please ensure the power to the 500 series enclosure is OFF before inserting or removing a module this recommendation is useful in order to protect the 500 enclosure circuits our product due to a very robust construction could be hot plugged without probl
8. n LEDs and 3 x red LEDs that measures in the range 6 21 dBu The resolution R 501 User Manual Issue 0 2 Page 7 ARREL Audio in 1 5 dB per step APPENDIX A Connections FIEL AUDIO WIRING R 501 LINE INPUT Mono Jack 1 4 Can be used Stereo Jack instead Mono Jack 1 4 Stereo Jack 1 4 O O PHASE PHASE GROUND GROUND GROUND MICROPHONE INPUT XLR On the back 3 1 Ground 2 PHASE E 3 PHASE Balanced line only dont connect unbananced lines MAIN OUTPUT XLR On the back 3 1 Ground 2 PHASE 2 3 PHASE Balanced line only To use unbananced lines disconnect pin 3 FIG 1 R 501 Connections R 501 User Manual Issue 0 2 Page 8 ARREL Audio APPENDIX B 500 series module edge connector GROUND OUT OUT GROUND R 500 MODULE B 16V GROUND 16V 48 V 1 2 3 4 5 6 7 8 FIG 2 500 Series module edge connector R 501 User Manual Issue 0 2 Page 9 ARREL Audio APPENDIX C Front Panel FIG 3 R 501 Front Panel R 501 User Manual Issue 0 2 Page 10 ARREL Audio TECHNICAL SPECIFICATIONS 16 V DC 48 V DC very low power supply currents with respect to Ks the 500 series standard Electronically Balanced Phantom Power switch LED Input Level Microphone Input 10 dBu 56 dBu Max input level 20 dBu internal limited to 12 dBu Input Impedance 4 KQ ine Input Unbalanced
9. nn 8 APPENDIX B 500 series module edge connector occoocnccccnccncnccncnccncncnncnnoncncnncnonnrnconnnennnos 9 APPENDIX C FIONLPANBR A aan ass mnss een t sens nat een erica 10 TECHNICAL SPECIFICATIONS 2 0 oo c ccc cece ecccccececceceececeececeececaeceeaeceeaecueaecueaesueaesueaeeneaeeas 11 R 501 User Manual Issue 0 2 Page 4 ARREL Audio INTRODUCTION ARREL Audio R 501 Mic Line Preamplifier has been conceived to offer to the 500 series user the superior audio performance of the ARREL audio higher level products The unit offers to the 500 user high reliability rugged design outstanding audio quality versatility and ease of use typical of the tradition of ARREL Audio products R 501 is perfect for recording every kind of music from classic pop rock electronic and in all the situations live and recording studio where maximum sound quality and special attention to dynamic range and signal to noise ratio is needed The R 501 technical specification shows that it is the perfect audio unit also for actual digital recording 24bit 192kKHz environments where superior performance is required R 501 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 R 501 could accept input signals up to 20 dBu a special
10. 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 R 501 User Manual Issue 0 2 Page 3 ARREL Audio TABLE OF CONTENTS SAFETY INSTRUCTIONS rrrnnnnunnnnnnnannnnnnnnnnnnnnannnnannnnennenennenennavnnnennenennenennenennenennennnnennenenne 2 ARREL Audio Contacts eee eee 3 TABLE OF CONTENTS iii nn nn nn nn nn nn nennen nn nn nennen A INTRODUCTION emma 5 POUS e at 6 Installation Instructions 02 0 cece cece ec ecececeeeceeeeeeeeeeeeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeataeatatananananananass 6 R 501 Front Panel Controls and Operations 7 Input Source selection iii 7 Phantom Power SWItCh iii Ek LER een 7 Gain Control knob iii ann nn anne nn ann nn ann nenn nn nn nn nenn nenn names 7 LO CUT Switch tek t kk Ek ERR ERE nn nn nn nn ann nn nenn nn nn nn nn nn ann nn ann nn nenn nennen 7 Phase UL 10 y PARA PUNO vege vacte rose race NE KEN RER cose rade re ne RE ne Er ne EEE ne EEE ne EEE ne re TE ee 7 A 7 APPENDIX A ConnectiONnS ss erre ne
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