PDF ML-118 User Manual
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1. SSVd IH ZHOZ 135 SSVd NOISS3HdWOO 12 ANIS ONON FIG 21 ML 118 Stereo Mode Mono Fine Compression Page 25 ML 118 User Manual Issue 0 2 ARREL Audio 111111 Page 26 ISYIAIY ZH OSL 3SVHd 135 SSVd SSVd LHASNI 69 1 O17 3SVHd lt 5 ino 1NANI E 13M 5 40155919109 sseq NOISS3HdWOO TITWAVA E HOSS3HdWOO 5 Wa j ZH OS 135 Q 5 d ssvd SSVd 2 e 1 5 e 34 O14 LL S 9 5 ino 1NANI 13 uoissesdwoo 6684 ou NOISSANdINNOD T3T1VMVd ARREL Audio TECHNICAL SPECIFICATIONS Power Supply Linear Regulator Balanced C Core Transformer Operating Voltage 220V 50 Hz 110 V 60 Hz switch Power Consumption 30 W Input Electronically balanced Impedance gt 10 KO Channel Gains L R from 10 to 6 dB L R from 22 to 4 dB Master Output Electronically balanced Output Impedance 50 minimum external load 6000 Master Level Level 4dBu Max 28dBu Bandwidth 5 200 000 Hz 1dB perfect square wave up to 20 KHz2. Fig 10 VU MON switch for monitoring the level of the processed signal WET before the OUT level potentiometer ML 118 User Manual Issue 0 2 Page 14 ARREL Audio DRY WET By using this control the DRY signal and the WET signal are mixed Fig 9 OUTPUT LEVEL Those controls are used to change the level at the output of the L R and L R chains Fig 9 In order to measure the output level of the L R L R signals the VU MON switch must be rotated in the L R L R OUT position Fig 10 This measurements represent the level of the mixed WET and DRY signal L R L R STEREO ZN WET 47 OUT DRY VU MON MUTE cain C2 Fig 11 VU MON switch for monitoring the output level of the elaborated signal WET after the OUT level potentiometer The L R output level potentiometer is the main control due to the fact that the L R signal contains the mono information The L R output level potentiometer vice versa controls the information that is required to recreate the stereo image effect STEREO OUT The two potentiometers center detent illustrated in Fig 11 are used to change the level of the decoded analog matrix LEFT and RIGHT signals The gain range is 6 dB The L R outs are electronically balanced To obtain an outstanding audio quality no servo amplifiers are used in the ML 118 so IT 15 NOT POSSIBLE TO UNBALANCE THE L R OUT OF THE ML 118 If you need an unbalanced connecti
3. REAL Innovation ML 118 Mastering Mid Side Unit L R LEFT O 0 DRY 4 L R RIGHT 00 4 ee User Manual Issue 0 2 ARREL Audio ML 118 User Manual Issue 0 2 Page 2 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 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 Alwavs follow the preca
4. D EN R R E T R Fig 7 XLR connectors on the front panel INSERT 3 ML 118 User Manual Issue 0 2 Page 12 ARREL Audio INSERT 1 2 3 are selected by pressing the corresponding INSERT button as indicated in FIG 8 The SEND out is electronically balanced To obtain an outstanding audio quality no servo amplifiers are used in the ML 118 so IT 15 NOT POSSIBLE TO UNBALANCE THE SEND OUT OF THE ML 118 If you need an unbalanced connection for the SEND out follow the indications shown in APPENDIX A The RETURN input is electronically balanced IT IS POSSIBLE TO UNBALANCE THE RETURN OF THE ML 118 If you need an unbalanced connection for the RETURN input follow the indications shown in APPENDIX A L R LEFT Fig 8 L R INSERT selection buttons ML 118 User Manual Issue 0 2 Page 13 ARREL Audio PHASE REVERSE This function controlled by the PHASE button FIG 9 and the corresponding LED reverts the audio signal phase This processed signal can be added or subtracted to the original signal by using the DRY WET knob DRY WET U KNOB LEVEL L R LEFT PHASE REVERSE BUTTON Fig 9 Phase Reverse button Output level DRY WET In order to measure the level of the post elaborated L R L R signals the VU MON switch must be rotated in the L R L R WET position FIG 10 L R L R STEREO TIN WET OUT DRY VU MON MUTE 0 cnin C2
5. e 11 GROUND RSEND2 2 23 10 2 SEND2 GROUND 20 e 9 3 L 2 L RET2 3 21 8 GROUND RET2 4 20 e 7 4 GROUND 19 6 5 L SEND3 LSEND3 5 e e 5 GROUND R SEND3 6 17 J e 4 6 SEND3 GROUND 16 e e 3 7 L RET3 1 7 159 2 GROUND RET3 8 Na e 1 8 R RET3 Fig 15 ML 118 DB 25 Connector ML 118 User Manual Issue 0 2 Page 19 ARREL Audio APPENDIX B Front Panel 9 L R LEFT L R RIGHT eut 66 Fig 16 118 front Panel ML 118 User Manual Issue 0 2 Page 20 ARREL Audio Back Panel APPENDIX C QQ Q 1431 1431 LNdLNO quio 6 10H 2 QN9 L 183SNI d X 009 3513 MOE 2H09 0S ATVLI NI Q3sniov3inNvW G3N9IS3d 22 FIG 17 ML 118 Back Panel Page 21 ML 118 User Manual Issue 0 2 ARREL Audio APPENDIX D BLOCK DIAGRAM v gt a 2 lt I LLI DE DE lt i I 3 Ee SS Sech m m m m 8 2179 Se SEE Se SES 5132 SIS e irs 8 lt LLI I O A Ley C C Cc FIG 18 ML 118 Block Diagram ML 118 User Manual Issue
6. 0 2 Page 22 ARREL Audio APPENDIX E Stereo Mode Applications INPUT our DE ESSER COMPRESSOR LIMITER DISTRESSOR PASS SET 4000 Hz LO PASS SET 2000 Hz INPUT FIG 19 ML 118 Stereo Mode De Esser ML 118 User Manual Issue 0 2 Page 23 ARREL Audio ISYIAIY 3SVHd 111111 0009 0001 188 188 N o o 21 3SvHd Loge v B 01 gt 110 13M SSVd UNVE 111111 2H 000 000 135 138 d ae ssvd el SSVd 01 t E 110 LNdNI 411114 SSVd GN vg FIG 20 ML 118 Stereo Mode Band Pass and Notch Filtering Page 24 ML 118 User Manual Issue 0 2 ARREL Audio SINT 1 IVNOLLdO l 5 3SYIAIY 3SVHd Y 111111 Z a ASVHd a LYASNI EG d e 2802 YISA WNO Ada 3AIS SS3MdWOO OL LNO SLINA TYNHALX3 TWNOLLdO MOSS3HdWOO 11 11 h ISHIAJH 3SVHd ez 3SVHd LYISNI ASA N 1 dNI Olanv SS3MdWOO OL LNO
7. 20 250 Hz or 200 2500 Hz F x 10 button pressed LO PASS filter parameters Range 1 5 KHz or 4 20 KHz F x 4 pressed Filters Roll off 12 dB Oct for both filters Fig 5 HIGH PASS O PASS CUT OFF FREQUENCY CUT OFF FREQUENCY HIPASS 4 gt LOPASS 4 eme e ON F x10 e ON F x4 e HIGH PASS ON OFF LO PASS ON OFF LO PASS BUTTON IGH PASS 10 X FREQUENCY BUTTON 4X FREQUENCY Fig 5 L R filtering section INSERT SECTION Three different INSERT points are available to connect outboards INSERT 1 and 2 are available on the DB 25 connector on the back panel see APPENDIX B This connection is useful for effects that are often used in the audio path ML 118 User Manual Issue 0 2 Page 11 ARREL Audio S AREL DESIGNED AND IN ITALY gt e GROUND GROUND MONSTER DR GROUND MID SIDE LAR RET ML 118 Un sio d LAR SEND 2 GROUND LER RET 2 GROUND LAR RET 2 LR SEND 1 LR SEND 1 GROUND LR RET 1 GROUND LR RET 1 CAUTION E A A ee renser Ki LR SEND 2 LAR SEND 2 GROUND LR RET 2 LR RET 2 FUSE 50 60Hz 30W FUSE 600 Fig 6 DB 25 connector on the back panel INSERT 1 2 INSERT 3 connectors are located on the front panel XLR connectors This is useful for on the fly outboard connections ARREL AUDIO E N D M R MONSTER T MID SIDE L ML 118 il E N
8. Distortion Noise lt 0 005 typical 0 001 L R L R Filters Hl Pass with 2 frequency ranges 20 250Hz and 200 2500H2 LO pass with 2 frequency ranges 1 5 2 and 4 20kHz Front Panel Input Section Controls Left Right level POTs 14 10dBu Calibration button and Calibration trimmer for non standard input levels Front Panel Channels Controls Level pot L R 10 6dB L R 22 4dB Hl Pass cut off frequency 20 250Hz and 200 2500H2 LO Pass cut off frequency pot 1 5kHz 4 20 2 HPF LPF on off buttons HPF Freq x 10 button LPF Freq x4 button 3 x bypass buttons Ins 1 Ins 2 Ins 3 Phase Reverse button DRY WET level pot Output level pot 4dBu max 28dBu Front Panel Master Monitor Section Controls 2 x Level Pots 6dB with center detect Left Right Monitor button 3 way MUTE toggle switch L R Left Off Off L R Right Off 5 step rotary switch for L R L R mode Dry Wet Out and Stereo mode In Out Backlighted stereo mode button Illuminated Power On Off switch Front Panel Indicators 1x LED calibration Input section per channel 4 x LEDs HPF On Freq x10 On LPF On Freq x4 On 3 LEDs Ins 1 Ins 2 Ins 3 bypass 1 x LED Phase Master Monitor section 1 LED Monitor 2 x Electromechanical VU meters LED Backlighed Front Panel Connectors 2 x Balanced XLR female for Insert 3 Send L R 2 x Balanced XLR mal
9. separate gains with suitable gain ranges amplified by suitable gains to obtain 4 dBu signal This fact is important when compressors limiters are used as inserts in the MID SIZE audio path 2 ML 118 User Manual Issue 0 2 Page 9 ARREL Audio LEVEL MONSTER MID SIDE ML 118 LEVEL Fig 3 L R L R channel gain In order to monitor the level at the output of the analog matrix the VU MON switch must be rotated in the L R L R DRY position FIG 4 after the make up gain stage before the filters insert points L R L R STEREO OUT JU IN WET OUT DRY VU MON MUTE 9 LRIR CO Fig 4 VU MON switch for monitoring the post coding level DRY The two L R ed L R audio chains are characterized by the same analog processing functions that are illustrated in the follow paragraphs FILTER SECTION Each L R ed L R processing section contains a HI PASS and a LO PASS filter that can be selected by pressing the HI PASS LO PASS button The activation of the filter is ML 118 User Manual Issue 0 2 Page 10 ARREL Audio indicated by the corresponding LED on In this way you can obtain low pass or high pass processing but also a band pass filter if the two filters are both ON The filters are characterized by two working bands selected by pressing the corresponding buttons Fx10 and Fx4 the cut off frequency is adjustable by a potentiometer HI PASS filter parameters Range
10. O Mode 16 APPENDIX A External connections 18 APPENDIX B Front Panel 20 APPENDIX C Back Panel E Ei Ma i D 21 APPENDIX D BLOCK DIAGRAM 00 0 22 APPENDIX E Stereo Mode Applications 23 TECHNICAL 27 ML 118 User Manual Issue 0 2 Page 5 ARREL Audio INTRODUCTION The ARREL Audio ML 118 is a new MID SIDE unit characterized by an outstanding sound quality and a number of new functions that are not available on other MID SIDE units available on the market The ML 118 is an advanced Mid Side analog processor designed by ARREL Audio to comply with the demands of professional recording and mastering engineers Mid Side processing is based on the coding of a stereo signal into two components The Mid channel contains the information that appears in both the left and right channels and the Side channel contains all the information that differs between the left and right channels Once encoded into M S these two signals can be processed independently before being decoded back into L and R channels The M S technique gives more control over the width of the stereo image than technique
11. ctions The stereo mode transform the ML 118 is a true analog hub useful to obtain the maximum productivity from your outboards in an easy way In APPENDIX E several examples show how to configure the ML 118 to obtain a de ML 118 User Manual Issue 0 2 Page 16 ARREL Audio esser a parallel compression scheme a mono fine compression scheme notch and band pass filtering Pa Ogzmo 5 3 23 R E T MID SIDE L ML 118 a E N D R R E R Fig 13 STEREO button ML 118 User Manual Issue 0 2 Page 17 ARREL Audio APPENDIX A External connections MARREL AUDIO WIRING ML 118 LINE INPUT XLR On the back 3 1 Ground A SS 2 PHASE K P 3 PHASE Balanced line Can be unbalanced INSERT SEND DB25 On the back TRS Jack 1 4 On the front panel GROUND COLD Balanced line only not connect unbalanced line INSERT RETURN DB 25 On the back TRS Jack 1 4 C HOT 42 2 7 h GROUND COLD Balanced line Can be unbalanced MAIN OUTPUT XLR On the back 3 1 Ground FEN 2 PHASE DN S 3 PHASE Balanced line only not connect unbalanced line Fig 14 ML 118 external connections ML 118 User Manual Issue 0 2 Page 18 ARREL Audio ML 118 INSERT 1 2 DB25 CONNECTOR N 13 GROUND 259 12 1 L SEND2 LSEND2 1 24
12. e Inversion button to reverse the phase of the wet signal addition and subtraction of the effect The wet and dry signals can be mixed together A bypass switch illuminated by a LED can turn the device into a Stereo unit making the Monster MS an effects unit perfectly integrated in an external signal processing chain The Monster MS features 2 multifunction VU meters that the user can set to display a variety of important data such as input stereo level post L R L R levels post processing L R L R level L R L R output level and output stereo level To obtain an outstanding audio quality no servo amplifiers are used in the ML 118 so IT IS NOT POSSIBLE TO UNBALANCE THE LINE OUT OF THE ML 118 ML 118 User Manual Issue 0 2 Page 6 ARREL Audio If you need an unbalanced connection for the line out there follow the instructions in APPENDIX A The block diagram of the unit is illustrated in APPENDIX D Housing and Rack Mounting The MS 118 has been designed to be compliant with a 3U 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 ML 118 User Manual Issue 0 2 Page 7 ARREL Audio ML 118 FRONT PANEL CONTROLS AND OPERATIONS INPUT STAGE The ML 118 input stage is based on a differential amplifier so it is electronically balanced Th
13. e for Insert 3 Return L R Rear Panel Input Connectors 2 x Balanced XLR female Rear Panel Output Connectors 2 x Balanced XLR male ML 118 User Manual Issue 0 2 Page 27 ARREL Audio Rear Panel Insert 1 x DB25 female for Insert 1 and 2 Send amp Return 1 Send amp Connectors Return 2 DB25 female Main L R Monitor L R Send L R Return L R Connectors Rear Panel AC mains IEC C13 16 Aconnector AC mains cord with IEC Schuko 16A Rear Panel Main Switch Power On Off switch Construction 19 3U rack mount metal box Dimensions W 483 19 133 35 mm 1 75 1 RU D 225 mm 8 86 Weight 6 kg ML 118 User Manual Issue 0 2 Page 28
14. e standard input level for the ML 118 is 4dBu In case of different or non standard line input levels the CAL switch can be used to add a make up gain The is adjusted by rotating the CAL trimmer use a small flat head screwdriver The gain the range is 0 10 dB In the case of unbalanced inputs the connection scheme indicated in APPENDIX A must be used CO INSERT 3 ozmco CALIBRATION GAIN LED p m 23 INPUT GAIN KNOBS ozmo CALIBRATION BUTTON Ama Fig 1 Input Section In order to monitor the input level the VU MON switch must be rotated in the STEREO IN position In the case of custom gain calibration button pressed the level is monitored after the calibration make up gain ML 118 User Manual Issue 0 2 Page 8 ARREL Audio O POWER L R L R STEREO OUT S IN WET OUT DRY VU MON MUTE cain Fig 2 VU MON switch for monitoring the input level CODING SECTION After the input stage the L and R audio signals are processed by the analog processor matrix to obtain the L R and L R signals The L R signal being the summation of two signals is in the range 0 6dB while the L R signal is in the typical range of 0 60 dB usually 20 dB Those levels are typical levels and their value depends exclusively on the characteristics of the L and R signals The L R and L R channels are equipped with
15. fo info arrel audio com Web www arrel audio com Support http www arrel 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 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 ML 118 User Manual Issue 0 2 Page 4 ARREL Audio TABLE OF CONTENTS SAFETY INSTRUCTIONS 3 E EE nem T T 4 TABLE OF GON TENT KEE 5 INTRODUGTIGODB EE 6 Housing and Rack Mounlng E 7 ML 118 FRONT PANEL CONTROLS AND 8 INPUT SEE yaya 8 CODING SEC TION Roa mk Rin nad Foi e d o vu a ta a ka 9 FILTER Section a 10 MEET FN 11 PFA ETE ET Blue 14 DRY WET e in e OO 0 O OU U neeee AI 15 OUTPUT LEVEL EE 15 STEREO Mn 15 GE 16 MUTE Function RE 16 STERE
16. nt falling over mmm Information for Users on Collection and Disposal of Old Equipment 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 ML 118 User Manual Issue 0 2 Page 3 ARREL Audio ARREL Audio Contacts ARREL Audio Via A Mondadori 7 00128 Rome Italy Tel 39 06 506 2017 Fax 39 06 5062017 In
17. on for the L R out follow the indications shown in APPENDIX A In order to measure the output level after the decode L R the VU MON switch must be rotated in the STEREO OUT position Fig 11 Please take into account that this measurement is not affected by the LEFT RIGHT gains the measurement point is before those potentiometers ML 118 User Manual Issue 0 2 Page 15 ARREL Audio VU METERS STEREO L R L R STEREO OUT VU MON p SWITCH LEFT AND RIGHT OUTPUT LEVEL VU MON MUTE LIRIL GO URIR MONITOR MONITOR L R L R BUTTON MUTE SWITCH Fig 12 Output and monitor section MONITOR By pressing the MONITOR button Fig 11 the signals selected by rotating the VU MON switch are sent to the main outputs LED indicator In this way the user is able to measure and also to listen the signals in all the important points of the audio path MUTE FUNCTION Of real practical importance is the MUTE function It permits to monitor the L R and the L R channel separately Fig 11 The MUTE command affects only the monitor output and not the corresponding signals measured by the VU Meters see APPENDIX C Block Diagram STEREO MODE BUTTON This button LED indicator is used to by pass the MS coding matrix see APPENDIX D Block Diagram In this configuration the ML 118 works as a stereo unit Fig 13 This configuration is very useful in different practical situations APPENDIX D External conne
18. s based on microphone placement techniques The Monster MS is a code decode mono stereo system to be used primarily for mastering sessions but it will perform outstandingly also as a stereo effects unit and as a mastering console On top of its amazing sound quality the Monster MS unit features a unique set of functions never seen before in similar units The L R and L R channels are equalized in amplitude by suitable gains at 4 dBu in order to obtain the maximum Signal Noise ratio and the optimum headroom in the audio path This fact is important when compressors limiters are used as inserts in the MID SIZE audio path Each L R and L R processing section contains a HI PASS and a LO PASS filter that can be selected by pressing the HI PASS LO PASS button The filters are characterized by two working bands selected by pressing the corresponding buttons Fx10 and Fx4 the cut off frequency is adjustable by a potentiometer HI PASS filter parameters Range 20 250 Hz or 200 2500 Hz F x 10 button pressed LO PASS filter parameters Range 1 5 KHz or 4 20 KHz F x 4 pressed The filters slope is 12dB Oct Three INSERT points are available to connect outboards INSERT 1 and 2 are available on the DB 25 connector on the back panel This connection is useful for effects that are often used in the audio path INSERT 3 connectors are located on the front panel XLR connectors This is useful for on the fly outboard connections The unit provides a Phas
19. utions listed below to avoid anv possibilitv of serious injurv or even death from electrical shock short circuiting damages fire or other hazards These precautions include but are not limited to the following e Donotconnectthe 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 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 instrume
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