PDF ML-166/8 User Manual
Contents
1. Front Panel Connnectors 4 x 1 4 TRS jack for INSERT 5 send L R return L R 1 x 1 4 stereo jack for headphones Imp gt 500 Rear Panel Input 8 x Balanced XLR female Ch1 to Ch8 ML 166 8 User Manual Issue 0 1 Page 17 ARREL Audio Connectors DB25 female Ch1 to Ch8 2 x Balanced XLR female DAC input 2x RCA CD DVD input Rear Panel Output Connectors 6 x Balanced XLR male Main Mon 1 Mon 2 1 4 jack stereo VU meter connection Rear Panel Insert 8 x Balanced XLR female Send 1 to 4 LEFT Send 1 to 4 RIGHT Connectors 8 x Balanced XLR male Return 1 to 4 LEFT Return 1 to 4 RIGHT Main Switch Power On Off switch Rear Panel AC mains IEC C13 16 A connector AC mains cord with IEC Schuko 16A Construction 2U 19 rack mount metal box Di W 483 mm 19 H 133 35 mm 1 75 1 RU D 225 mm imensions 8 86 Weight 9 kg ML 166 8 User Manual Issue 0 1 Page 182. REAL Innovation ML 166 8 8 Channel Summing Mixer H J FI E ARREL Roc l ARA S SS sao be Ve Ve e mm CO OO ee 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 liguids 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
3. 3dB to 2 5dB in 0 5dB increments Master Sub filter 20 Hz 12 dB Oct Slope Stereo Line level 4dBu max 24dBu balanced Imp DAC Input gt 10kO CD Input Stereo Level 10dBu Imp gt 10kQ unbalanced Bandwidth 5 200 000 Hz 1dB perfect square wave up to 20 KHz Distortion Noise lt 0 005 typical 0 001 Front Panel Controls each channel Input Section 12 step rotary switch from for level control 3dB to 2 5dB in 0 5dB increments 3 positions input attenuation switch OdB or 6dB or 12dB 11 Step pan rotary switch 2 x buttons for mute and solo Front Panel Controls Insert Section 4 x backlighted buttons INSERT 1 to 4 enable 3 x buttons Insert 5 Insert OFF Solo Front Panel Controls Master Section 2 x 12 step level rotary switch 3dB to 2 5dB in 0 5dB steps for L R Channels 2 x buttons Subsonic Filter Phase Toggle switch input mode 1 2 Sum 5 6 Front Panel Controls Monitor Section 4 x pots Monitor Solo CD level Headphones 5 x buttons Mute L Mute R Mono DAC CD 3 way toggle switch speaker mode Speaker 1 OFF Speaker 2 Front Panel Indicators Input Section each channel Insert Section yellow LED Solo red LED Mute Master Section 4 x backlighted button INS 1 4 2x red LEDs INS 5 INS off vellow LED Solo Monitor Section 3x red LED Mute L Mute R Mono 2X green LED DAC CD
4. Front Panel FIG 3 ML 166 8 Front Panel ML 166 8 User Manual Issue 0 1 Page 14 ARREL Audio APPENDIX C Back Panel KA ab suza we muza 282 nuza muza LL suza we nuza Va INPUT INSERT E 5 z 2 xl o ji la m eg lila o md a a i Kl g 28 E lt S Re w 43 Fig 4 ML 166 8 Back Panel ML 166 8 User Manual Issue 0 1 Page 15 ARREL Audio APPENDIX C Input DB 25 connectors GROUND 1 1 GROUND 2 2 GROUND 3 3 GROUND 4 4 GROUND CONNETTORE s ie DB25 IN Steg 7 GROUND 6 7 GROUND 8 9000 0 0 0 00000 N A OO O N O 8 le ML 166 8 User Manual Issue 0 1 Page 16 ARREL Audio TECHNICAL SPECIFICATIONS Number of Channels 8 Power Supply Linear Regulator Toroidal Transformer Operating Voltage 220V 50 Hz 110 V 60 Hz switchable Power Consumption 50 W Input Electronically balanced Level 4 dBu max 24 dBu Impedance gt 10 KQ Channel Gain 12 step level rotary switch from 3dB to 2 5dB in 0 5dB increments with input attenuator selection switch 0dB or 6dB or 12dB Master Output Electronically balanced Output Impedance 50 O minimum external load 6000 Master Level Level 4dBu Max 29dBu 12 step level rotary switch from
5. 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 166 8 User Manual Issue 0 1 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 aud
6. L G e a e lana 9 MUTE L R BUTTONS remettent nine 9 MONO BUTTON zn dd ansan a l san lt no 10 Speaker switch a se e eee ct 10 AC UNO M BE 10 CO DONO F r PE SS DE O S fa HH enemas 10 Level O mm 10 Phones o ii ERR RR PR na nc nu A nu PR ne ree 10 Headphones TRS jack se sessao eee ane nn A 10 Master section is die RD ER ORE UNR RR RN RR OR NO 11 SHEET 11 Phase DUTTON mm 11 Left and rigth master volume knobs 11 Master section in out selector 11 ML 166 8 Back Panel Controls and Operations 11 INP Us non a 11 INPUT DB 25 EI ro 11 MAIN L R OUT i ie iii r i B en 11 MONITOR OU st o 12 SEND RETURN 1 and annees 12 OUTPUT Uerder 12 APPENDIX A Eppes ra nenna 13 APPENDIX B Front PAS En densa AIS lana scene tone ta 14 APPENDIX C Back PANE iii oa 15 TECHNICAL elen el LE 17 ML 166 8 User Manual Issue 0 1 Page 4 ARREL Audio INTRODUCTION ARREL Audio Monster Master ML 166 8 is the answer to all stream mixing and mastering needs Its features set it apart from other similar products on the market each of the 8 mixing channels has an 11 step rotary switch for panning a 12 step rotary switch for level going from 3dB to 2 5dB in 0 5dB increments an input attenuation selection button 0dB 6dB or 12dB and mute and solo buttons The solo function is particularly useful as it works even if the channel is muted signal is fed to the bus after the pan rotary switch
7. MUTE L or MUTE R button to mute the L or the R channel LEDs on Press again to switch off the MUTE L R function LEDs off ML 166 8 User Manual Issue 0 1 Page 9 ARREL Audio DAC LEVEL CONTROL BUTTON CD DVD READER LEVEL CONTROL BUTTON CD DVD DAC LEVEL KNOB HEADPHONE LEVEL MONITOR PHONES e MONO SPEAKER PHONES MONSTER MASTER MS 166 HEADPHONE OUTPUT JACK Fig 3 ML 166 8 Monitor Section MONO BUTTON Push the button to obtain a single mono output LED on Press again to switch off the MONO function LED off SPEAKER SWITCH Select one of the three positions of the SPEAKER toggle switch Speaker 1 OFF Speaker 2 to select the speaker system DAC BUTTON Push the button to select the DAC input LED on Press again to disconnect the DAC input LED off CD BUTTON Push the button to select the CD DVD input LED on Press again to disconnect the CD DVD input LED off LEVEL KNOB Rotate the knob to change the level of the selected input source PHONES KNOB Rotate the knob to change the headphone volume HEADPHONES TRS JACK Connect the headphone to this TRS jack The headphone amplifier is able to drive headphones with impedance gt 500 ML 166 8 User Manual Issue 0 1 Page 10 ARREL Audio Master section MASTER 12 STEP ROTARY SWITCH MASTER VOLUME FOR L R CHANNELS SUB PHASE 0 0 4 ww SUBSONIC FILTER e e i 18 Hz 12 dB oct PHASE REVERSE BUTTO
8. N MASTER SECTION INPUT SELECTOR INPUT 1 2 SUMM INPUT 5 6 Fig 3 ML 166 8 Master Section SUB BUTTON Push the button to activate the subsonic filter LED on Press again to deactivate the filter LED off PHASE BUTTON Push the button to activate the PHASE REVERSAL LED on Press again to deactivate the function LED off LEFT AND RIGTH MASTER VOLUME KNOBS Rotate the L and R knobs to adjust the master level 12 positions are available Rotary switch from 3dB to 2 5dB in 0 5dB increments MASTER SECTION IN OUT SELECTOR Select one of the three positions of the INPUT switch 1 2 SUMM 5 6 to select the input channels ML 166 8 Back Panel Controls and Operations INPUT XLR The 16 XLR female connectors for the input channels are clustered ion two groups of 8 INPUT DB 25 1 AND 2 Two DB 25 can also be used for the input channels connections Each DB25 accommodate 8 input channels MAIN L R OUT XLRs for the L R main output ML 166 8 User Manual Issue 0 1 Page 11 ARREL Audio MONITOR OUT XLRs for the L R monitor output SEND RETURN 1 AND 2 XLRs for the send return 1 and 2 OUTPUT DB 25 The output DB 25 connector is used to simplify the output connections by a using a signle multicore cable Fig XXX ML 166 8 User Manual Issue 0 1 Page 12 ARREL Audio APPENDIX A Connections FIG 1 ML 166 8 Connections ML 166 8 User Manual Issue 0 1 Page 13 ARREL Audio APPENDIX B
9. d 8 channel multicore cable DB25 to DB25 as well as single channel external device insertion via an XLR cable Following the summing stage is an insert point for connecting external units such as equalizers and compressors that can be bypassed with a front panel button This insert connection electronically balanced for both send and return can be accessed either from the DB25 and XLR rear connectors or via front panel jacks This feature is particularly useful when a main external unit connected via the rear panel needs to be momentarily replaced by another device quickly The use of the send return front panel jacks automatically disables the corresponding rear panel connected device The send signal on the front panel jacks is always present allowing the set up of the levels for the outboard connected by the front panel jacks The connection of the return cable will exclude the main outboard connected to the DB25 connector on the back panel Therefore a unit can be connected to the front panel jacks maintaining the main insert on the back panel Used in conjunction with mic preamplifiers the ML 166 8 is the ideal mixer for engineers working in studios not equipped with a classic analog console who do not want to use digital mixers For this reason a different ML 166 8 version characterized by a level control range of 20dB 6dB is also available ML 166 8 User Manual Issue 0 1 Page 5 ARREL Audio ML 166 8 is dedicated due to h
10. io 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 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 ML 166 8 User Manual Issue 0 1 Page 3 ARREL Audio TABLE OF CONTENTS SAFETY INSTRUCTIONS scssnsscscasspanscndedaanvadegensnniieduresiaagavvandadavavedejansvadedevansdesavestedavesiSusavtas 2 ARREL Audio Contacts iiaaaaanaaannaaaaaaaa an nnaaaaaannanannnnnnnnnnnnnnnnnnnnnnnnnnnannnnnaanannnnanannaaaaa 3 TABLE OF CONTENTO essi a iii 4 INTRODUCTION WE 5 PHOS MN EE 7 ML 166 8 Front Panel Controls and Operations na 8 INPUT SEC TION iai sb into ee mn 8 input section gain ROD ne gin ona nn tad 8 Input section pan ROBES aan een a ee ne 8 Input section solo BARON ne a al beac 8 Input section mute button isse ENEE 8 Input attenuator Switch Li a nnns nttnEnnnEneeeennn Ennn nenene 8 s EE 9 Monitor section E 9 SOLO KNO B tt none 9 DLC amha Eas cert tre rt tr 9 MONITOR KNOB serai no SR
11. is 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 ML 166 8 User Manual Issue 0 1 Page 6 ARREL Audio Housing The ML 166 8 is contained in a 3U rack metal box No specific air conditioning is reguired 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 166 8 User Manual Issue 0 1 Page 7 ARREL Audio ML 166 8 Front Panel Controls and Operations INPUT SECTION CHANNELS 1 8 INPUT SECTION GAIN KNOB Rotate the level knob to change the gain The level is controlled by a 300 potentiometer allowing a range of 14 dB 12dB to 2dB 6dB to 20dB version available Fig 1 Rotate the rotary switch from to change the input gain Twelve positions are available 3dB to 2 5dB in 0 5dB increments 11 STEPS ROTARY SWITCH PAN POT MUTE BUTTON 12 STEP ROTARY SWITCH INPUT GAIN SOLO BUTTON INPUT ATTENUATOR 0 6dB 12 dB Fig 1 ML 166 8 Input Section INPUT SECTION PAN KNOB This is a 3 75 dB centre pan with S Law shaping to help accurate panning to extremes of left and right The pan knob controls an 11 steps rotary switch INPUT SECTION SOLO BUTTON Press the solo button green LED on to isola
12. 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 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 H Information for Users on
13. te the channel Press again to turn off the solo function LED off Fig 1 INPUT SECTION MUTE BUTTON Press the mute button red LED on to turn off the channel Press again to turn on the channel LED off Fig 1 INPUT ATTENUATOR SWITCH This three positions switch selects the input attenuation value between three values 12 6 and 0 dB ML 166 8 User Manual Issue 0 1 Page 8 ARREL Audio Insert section Push the back illuminated buttons to select the main inserts Fig 2 Insert 5 can be selected by pressing INS 5 Insert 5 can be connected by using the jacks on the front panel Press INS OFF button to exclude all the inserts Press the SOLO button to monitor the pre insert audio signal INSERT 2 2 3 4 BACKILLUMINATED BUTTONS RELAY SWITCH BACK PANEL XLR CONNECTORS INSERT INS 1 INS 2 INS 3 INS 4 INSERT MONITORING PRE INSERT SOLO BUTTON SEND INS 5 RETURN INS INS R C A L L R L R 5 OFF SOLO L AUDIO e e i BY PASS INSERT ALL INSERTS INSERT 5 FRONT PANEL JACKS BY PASS INSERT 5 BUTTON Fig 2 ML 166 8 Insert Section Monitor section SOLO KNOB Turn the SOLO gain knob Fig 3 in order to select the required amount of gain for the SOLO bus SOLO LED The green LED on means that the SOLO function is activated MONITOR KNOB Turn the MONITOR gain knob Fig 2 in order to select the required amount of gain for the monitor outputs MUTE L R BUTTONS Push the
14. to allow a correct and precise stereo positioning of each signal for each channel The master section has two master level rotary switches that allow a 3dB increase or decrease of the output level in steps of 0 5dBs The internal summing section is totally symmetric balanced and built with highest quality components to guarantee maximum signal transparency and quality The resulting noise is 10 to 12dB lower than other summing mixers A specific additional feature of the Monster Master is the Summing Bypass function which is extremely useful for mastering an already mixed stereo track This option allows selective feeding of channels 1 and 2 or 5 and 6 and not the entire summing output to the mastering section This further reduces noise coming from unused tracks When channels 1 and 2 or 5 and 6 are directly fed to the mastering section the level and pan controls for these channels are bypassed and a unitary gain is used Changing the internal jumper setup can easily restore the effect of the level control rotary switch The Monster Master is the All in one solution for the mixing and mastering engineer who do not accept compromises in sound quality and that want maximum flexibility and reliability An exceptionally robust frame houses only the best available non custom and non SMD components Each channel can be accessed by two different input connectors DB25 and XLR allowing hassle free connections to professional DAW via a standar
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