PDF R-503 User Manual
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1. FIG 3 500 Series module edge connector R 503 User Manual Issue 0 4 Page 10 ARREL Audio TECHNICAL SPECIFICATIONS Number of 4 Channels 16 VDC very low power supply currents with respect to the 500 series Power Supply Standard Balanced Impedance 20KQ Line Input Input Level 4dBu Max 24 dBu Electronically Balanced Outout Level 4 dBu p Max 28 dBu Output Impedance 100 Q Bandwidth 5 150 KHz 1 dB perfect square wave up to 20 KHz Distortion o Noise lt 0 003 typical 0 001 True By Pass button LED HI LO gain Emphasis De Emphasis pot control Range 14 dB ect Parametric section 12 dB center detect Front Panel Central Frequency pot control Controls Frequency band control three positions switch Frequency 10 Frequency x 1 Frequency x 10 Q control three positions switch narrow medium large BAX Shelving shape control LO and HI switchable 3 shapes R 503 User Manual Issue 0 4 Page 11 ARREL Audio R 503 User Manual Issue 0 4 Page 12 ARREL Audio Frequency Bands LO Baxandall BAX Shelf Shape three position switch three shapes PARAMETRIC Bell Shape 20 200 Hz F 10 200 2000 Hz F x 1 or 2000 20000 Hz F x 10 HI Baxandall BAX Shelf Shape three position switch three shapes Rear Panel Input Connectors 500 series compatible connector Front2. REAL Innovation R 503 Parametric Equalizer 2 Shelf Baxandall BAX bands User Manual Issue 0 4 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 _ 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
3. Issue 0 4 Page 4 ARREL Audio INTRODUCTION ARREL Audio R 503 is an advanced parametric equalizer 2 Shelf Baxandall BAX bands to offer to the 500 series user the superior audio performance of the ARREL audio high level products The R 503 is characterized by high reliability rugged design outstanding audio quality versatility and ease of use typical of the tradition of ARREL Audio products Due to the presence of front panel INOUT BANTAM connectors the R 503 can be easily patched with other modules of the R 500 series R 501 ELITE R 509 or other units without the needs to access to the back panel The R 503 equalizer is based on the Livio Agentini s Single Stage Parallel Configuration patented design This innovative phase coherent EQ design offers the lowest distortion noise specifications not available in other products The R 503 filtering section offers three bands LO Parametric HI The emphasis de emphasis control range is 12 dB for the parametric section and 14 dB for the shelving sections The HI and LO are shelving Baxandall filters three position switches are used to implement three different shelving frequency responses The parametric filter a bell shaped filter with continuous control of the central frequency three possible bands are switchable F 10 F x 1 F x 10 for a total control in the range 20 Hz 20KHz The control value narrow mid large is switchable A bypass switch is used
4. fire or other 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 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 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 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 mu Information for Users on Collection and Disposal of Old Equipment This special symbol on the produ
5. for a true analog by pass function LED To obtain an outstanding audio quality no servo amplifiers are used in the R 503 so If you need an unbalanced connection for the SEND out follow the indications shown in APPENDIX B R 503 is one of the models of the series of equalizers that ARREL Audio conceived for the 500 series the other models are R 502 R 504 R 505 in order to give to the user the best choice for its application The R 503 offers a very cool satin finish stainless steel front panel and a semi closed stainless steel enclosure R 503 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 R 503 User Manual Issue 0 4 Page 5 ARREL Audio Housing The R 503 single band parametric equalizer 2 Shelf Baxandall Bax bands module has been designed to be compliant with the 500 series standard Installation Instructions gt gt Remove the R 503 module from the packaging Turn off the 500 series enclosure and remove mains power 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 Insert the R 503 into the empty slot in the 500 series enclosure Be sure that the rear edge connector on the R 503 module mates correctly w
6. Panel connectors BANTAM in and out connectors Construction Compliant 500 series rack with PSU and external audio connections Single 500 series rack slot required for each R 501 module Dimensions Series 500 standard Weight 500g Data is subject to change without notice R 503 User Manual Issue 0 4 Page 13
7. cts 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 R 503 User Manual Issue 0 4 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 contin
8. ith the edge connector of the 500 series enclosure Replace the 2 fastening screws through the top amp bottom holes in the R 503 module and screw into the 500 series enclosure The module must be secured into the enclosure before turning the mains on Apply mains power into the 500 series enclosure and turn on Connect the microphone audio source or instrument and select the correct settings 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 problems R 503 User Manual Issue 0 4 Page 6 ARREL Audio R 503 Front Panel Controls and Operations SHELVING SHAPES FOR HI AND LO The shape of the shelving curves for the HI and LO bands are controlled by a switch Three positions are available EMPHASIS DE EMPHASIS CONTROL KNOB HI PARAMETRIC LO Rotate the emphasis de emphasis control knob to change the frequency content in a range of range of 12 dB for the parametric section and 14 dB CENTER FREQUENCY CONTROL SWITCH PARAMETRIC Three possible bands are switchable F 10 F x 1 F x 10 for a total control in the range 20 Hz 20 kHz CENTER FREQUENCY CONTROL KNOB PARAMETRIC Rotate the central frequency knob to change the frequency in a range defined by the contro
9. l frequency control switch Q CONTROL SWITCH FOR THE PARAMETRIC BAND Turn the toggle switch to change the Q Three positions are available narrow medium large ON SWITCH Setting the switch on the ON position will turn ON the equalizer LED on Set the switch on the opposite position to turn off the equalizer LED off R 503 User Manual Issue 0 4 Page 7 ARREL Audio APPENDIX A Front Panel ARREL R503 AUDIO 0 Hz 4k coo 1110 x10 400 FIG 1 R 503 Front Panel R 503 User Manual Issue 0 4 Page 8 ARREL Audio APPENDIX B EXTERNAL CONNECTIONS ARIEL AUDIO WIRING R 503 LINE INPUT XLR On the back 3 1 Ground fen 2 PHASE un 2 3 PHASE Balanced line Can be unbalanced OUTPUT XLR On the back 3 1 Ground 2 do 2 y 3 PHASE Balanced line only To use unbalanced lines disconnect pin 3 INSERT SEND BANTAM On the front panel C E HOT GROUND COLD Balanced line only To use unbalanced lines disconnect RING INSERT RETURN BANTAM On the front panel Pp HOT A IN GROUND COLD Balanced line Can be unbalanced FIG 2 External connections R 503 User Manual Issue 0 4 Page 9 ARREL Audio APPENDIX C 500 series module edge connector 1 GROUND 2 OUT 3 4 OUT 5 GROUND R 500 7 8 IN MODULE 10 IN 11 12 16V 13 GROUND 14 16V 15 48V
10. uously 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 R 503 User Manual Issue 0 4 Page 3 ARREL Audio TABLE OF CONTENTS SAFETY INSTRUCTIONS tii 2 ARREL Audio Contacts ccc cso casts settee trea ren 3 TABLE OF CONTENTS 4 INTRODUCTION nata 5 A E e E ee eee ee mene eae 6 Installauon lasindetlions un 6 dao 7 R 503 Front Panel Controls and Operations 7 shelving shapes for hi and lo 7 emphasis de emphasis control knob HI PARAMETRIC LO 7 Center frequency control switch PARAMETRIC 7 Center frequency control KNOB 7 Q control switch for the parametric band 7 ON SWITCH een 7 APPENDIX A Front Panel Sessa aa 8 APPENDIX EXTERNAL CONNECTIONS ui 9 APPENDIX 500 series module edge 10 TECHNICAL SPECIFICATIONS strain 11 R 503 User Manual
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