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Direct Digital Amplifier

1. loop button enabled there will be no audio output if any erminal as the active input connection from the above loop setup example is broken i e no connection to OPTICAL OUT not looped to OPTICAL LOOP IN etc Press 6 COAX 2 Select the source connected to the COAX 2 rear panel loop button again to deactivate or turn off the loop feature LOOP erminal as the active input is extinguished in the VFD thus returning to normal audio listening of a selected source input 7 OPTICAL 1 Select the source connected to the OPTICAL 1 rear panel erminal as the active input NOTE This digital processor loop feature can be applied to all analog and 8 OPTICAL 2 Select source connected to the OPTICAL 2 rear panel digital audio input signal sources Optical 1 2 Coax 1 2 AES EBU erminal as the active input BALANCED and SINGLE ENDED 9 AES EBU Select the source connected to the AES EBU IN rear panel connector as the active input 13 MENU Toggle to view the available options such as LEVEL TRIM and SAMPLE RATE options for BALANCED and SINGLE ENDED input signal as well as selections for SPEAKER COMPENSATION and POLARITY These menu options are accessed by pressing the MENU button and then rotating the VOLUME control knob clockwise or counterclockwise to select desired level or setting Release the VOLUME knob when you reach your preferred level or setting The change will take effect after a few seconds when the disp
2. sr GROUND CLAMP lazy H SERVICE 7 ENTRANCE CONDUCTORS STAND OFF INSULATORS gt S MAST ee if ANTENNA SERVICE ENTRANCE Lcrouno crans LEAD IN WIRE A GROUND WIRE gt D ANTENNA gt 5 D a DISCHARGI LAr PSCAROE a eee POWER SERVICE ELECTRODE SYS GROUNDING z TEM ae e g interior metal water pipe BONDING JUMPER GROUND WiRE gt TO EXTERNAL ENNA GROUND TERMINALS CLAMPS OF PRODUCT OPTIONAL ANTENNA GROUND ING ELECTRODE DRIVEN 8 FEET 2 44M INTO THE EARTH IF REQUIRED BY LOCAL CODES SEE NEC SECTION 810 21 1 15 Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or cable system This will prevent damage to the product due to lightning and power line surges 16 Power Lines An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits or where it can fall into such power lines or circuits When installing an outside antenna system extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal 17 Overloading Do not overload wall outlets extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock 18 Object and Liquid Entry Never push objects of any kind into this product
3. NAD Direct Digital Amplifier Owner s Manual IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS FOR LATER USE FOLLOW ALL WARNINGS AND INSTRUCTIONS MARKED ON THE AUDIO EQUIPMENT 1 Read instructions All the safety and operating instructions should be read before the product is operated 2 Retain instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the product and in the operating instructions should be adhered to 4 Follow Instructions All operating and use instructions should be followed 5 Cleaning Unplug this product from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 6 Attachments Do not use attachments not recommended by the product manufacturer as they may cause hazards 7 Water and Moisture Do not use this product near water for example near a bath tub wash bowl kitchen sink or laundry tub in a we basement or near a swimming pool and the like 8 Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing serious injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Any mounting of the product should follow the manufacturer s instructions and should use a mounting accessory
4. INSIDE IDENTIFICATION OF CONTROLS FRONT PANEL 1 2 3 4 a M2 direct digital amplifier A H NAD NAD M2 NA coax1 coax2 optical optical2 aes ebu balanced single ended loop menu 3 l J 2 5 6 7 8 9 10 11 12 13 c NAD M2 1 STANDBY LED This indicator will light up amber when M2 is in 10 BALANCED Select the source connected to the BALANCED L and standby state When M2 is at ON state this indicator will illuminate blue BALANCED R rear panel connectors as the active input 2 STANDBY BUTTON Press this button to switch ON the M2 The 11 SINGLE ENDED Select the source connected to the SINGLE ENDED L Standby LED indicator will turn from amber to blue and illuminate the and SINGLE ENDED R rear panel terminals as the active input VFD Pressing the STANDBY button again turns the unit back to standby mode 12 LOOP DIGITAL PROCESSOR LOOP Allow the insertion of external digital filters into the signal path This is the digital equivalent of the IMPORTANT NOTICE analog Tape Monitor Loop An example on how to take advantage of The rear panel POWER switch must be set to ON position for the this feature is illustrated below STANDBY button to activate After pressing the STANDBY button there a Connect a digital input to the rear panel s OPTICAL 1 TosLink optical will be a delay before the M2 will be completely enabled Please wait terminal until the initial NA
5. Soft Clipping circuitry on all channels At ON position Soft Clipping gently limits the output of the M2 to minimize audible distortion should the amplifier be over driven Soft Clipping may simply be left ON at all times to reduce the likelihood of audible distortion from excessive volume settings However for critical listening and to preserve optimum dynamics you may wish to defeat it by setting this switch to OFF position OFF AUTO TRIGGER SWITCH When at AUTO position the front panel STANDBY button is disabled and M2 remote control s ON OFF button non functional At this condition the M2 can only be switched ON from standby mode or back to standby mode when 12V DC is applied or cut off at the 12V TRIGGER IN jack Slide the OFF AUTO switch to OFF setting for the M2 to be normally switched ON or back to standby mode using the front panel STANDBY button or M2 remote control s ON OFF button NOTE The rear panel POWER switch must be set to ON position for the STANDBY button to activate Switch the rear panel POWER switch to ON position in order to make use of the 12V TRIGGER IN and OFF AUTO TRIGGER SWITCH features as well as the front panel STANDBY button 9 12V TRIGGER IN This input allows the M2 to be switched remotely to standby mode or ON by ancillary equipment such as an amplifier preamp AV processor etc The controlling device must be equipped with a 12 V trigger output to use this feature 10 12V TRIGGER
6. the lower section of the VFD and with D flashing Note that DIGITAL OPTICAL 1 is also shown at upper section of the VFD 2 Within 5 seconds rotate the VOLUME control knob clockwise or counterclockwise to select the first character B from the alphabetical list The ranges of characters available are 0 9 _ space and A Z 3 Press the front panel loop button to select the character and at the same time move on to the next character Repeat steps 2 and 3 for each character in sequence 4 Complete the renaming process by pressing the front panel menu button to save the new source input name NOTES Renaming of a source input can only be done using the front panel buttons Ifno change is made within 5 seconds or if the front panel button of the source input being renamed is pressed the renaming process will be automatically terminated with any renamed characters made not saved You can terminate the renaming process by pressing any other front panel buttons except loop menu or the current source input being renamed The renamed characters at the time of terminating the process will be saved IDENTIFICATION OF CONTROLS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 m fa Fa SJ SS I ANALOG AUDIO 5 wwo _ SPEAKERS fn ever ove Pac SPEAKERS om ss ON A ce no oF aiio f RIGHT lz POWER tazuo A soeone L LEFT 47 EN a C oCo i out e g
7. 1 3 rated power 75Q coaxial 1100 AES EBU 32 kHz to 192 kHz gt 90dB ref 10 kHz 40 1 3 rated power gt 200W gt 250W gt 300W lt 0 01 ref 100mW rated power lt 0 02 ref 20HZ 20kHz 100mW rated power gt 250W ref 1 kHz 80 0 1 THD 300W gt 450W gt 600W gt 27A gt 95dB A weighted ref 1W gt 118dB A weighted ref 200W gt 2000 ref 20Hz 200Hz 0 3dB ref 10 Hz FS 2 FS 32 kHz 96 kHz 192 kHz 500W ref 100 240V AC 50 60 Hz 1W 100W 435 x 133 x 454 mm Net 435 x 148 x 502 mm Gross 20 2 kg 25 8 kg Specifications are subject to change without prior notice For updated documentation and features please log onto www NADelectronics com for the latest information about M2 13 www NADelectronics com 2009 NAD ELECTRONICS INTERNATIONAL A DIVISION OF LENBROOK INDUSTRIES LIMITED All rights reserved NAD and the NAD logo are trademarks of NAD Electronics International a division of Lenbrook Industries Limited No part of this publication may be reproduced stored or transmitted in any form without the written permission of NAD Electronics International M2 Owner s Manual Issue 1 10 09 09
8. D M2 display in the VFD is extinguished before you b Connect the rear panel s OPTICAL LOOP OUT to a compatible select any of the source input or features of your M2 OPTICAL IN of a Mac or any processor where the signal can be subjected to a wide library of crossover filters equalization or room 3 VACUUM FLUORESCENT DISPLAY VFD Display visual information correction programs Check if your Mac or processor has these about the selected source input menu options volume level and other feature capabilities related information and settings c Send out the processed signal from your Mac or processor s corresponding Optical Out port into M2 s OPTICAL LOOP IN thereby 4 VOLUME Use this control to adjust M2 s overall amplification or volume completing the signal loop path level Turn clockwise to increase the volume setting counter clockwise d Press front panel s loop button to select your OPTICAL 1 s to lower it The M2 features a velocity sensing volume control rapid processed input signal When loop feature is engaged LOOP will movement changes the volume in large steps slow movement increments be continuously displayed at the lower left corner of the VFD after a the volume in 0 5dB steps The VOLUME knob is also used to select options brief display of sample rate setting of the source or adjust settings when MENU button is activated IMPORTANT NOTICE 5 COAX 1 Select the source connected to the COAX 1 rear panel With
9. D indicator will turn from amber to blue and illuminate the VFD 5 Press the corresponding front panel input button of your preferred source input INTRODUCTION GETTING STARTED SAVE THE PACKAGING Please save the box and all of the packaging in which your M2 arrived Should you move or otherwise need to transport your M2 this is by far the safest container in which to do so We ve seen too many otherwise perfect components damaged in transit for lack of a proper shipping carton so please Save that box NOTES ON INSTALLATION Your NAD M2 should be placed on a firm level surface Avoid placing the unit in direct sunlight or near sources of heat and damp Allow adequate ventilation Do not place the unit on a soft surface like a carpet Do not place it in an enclosed position such a bookcase or cabinet that may impede the air flow through the ventilation slots Make sure the unit is switched off before making any connections Use high quality leads and sockets for optimum performance and reliability Ensure that leads and sockets are not damaged in any way and all sockets are firmly pushed home For best performance use quality speaker leads of 16 gauge 1 5mm thickness or more Should water get into your NAD M2 shut off the power to the unit and remove the plug from the AC socket Have the unit inspected by a qualified service technician before attempting to use it again DO NOT REMOVE THE COVER THERE ARE NO USER SERVICEABLE PARTS
10. IVE The M2 uses NAD s proprietary Digital PowerDrive amplifier technology that allows substantial additional power for short periods of time Research has shown that the peak to average power required to faithfully reproduce music can be a factor of ten for well recorded performances Digital PowerDrive uniquely satisfies this requirement Music sounds more dynamic and open with PowerDrive because the musical transients that are present in a live performance are not reduced in amplitude or compressed 10 DIGITAL BALANCED SINGLE ANALOG REPEAT REPEAT RANDOM IDENTIFICATION OF CONTROLS M2 REMOTE CONTROL 1 ON Switch M2 ON 2 OFF Switch M2 OFF 3 COAX 1 2 OPT 1 2 AES EBU Select Coaxial Optical or AES EBU digital source input 4 PRO LOOP Activate or deactivate loop feature 5 BALANCED Select BALANCED source input SINGLE ENDED Select SINGLE ENDED source input 6 MUTE Temporarily shuts down audio output 7 DIM Reduce or restore VFD brightness 8 VOLA Increase or decrease the loudness level 9 DEVICE SELECTOR 1 2 Switch between DVD and CD control functions Set to position 1 for applicable CD control button functions compatible with NAD models like C 515BEE C 545BEE C 565BEE and M5 Set to position 2 for applicable DVD control button functions compatible with NAD models like T 535 M55 T 585 an
11. OF WASTE BATTERIES DIRECTIVE 2006 66 EC OF THE EUROPEAN PARLIAMENT AND THE COUNCIL OF EUROPEAN UNION FOR EUROPEAN CUSTOMERS ONLY Batteries bearing any of these symbols indicate that they should be treated as separate collection and not as municipal waste It is encouraged that Pb necessary measures are implemented to maximize the separate collection of waste batteries and to minimize the disposal of batteries as mixed municipal waste Hg Cd End users are exhorted not to dispose waste batteries as unsorted municipal waste In order to achieve a high level of recycling waste batteries discard waste batteries separately and properly through an accessible collection point in your vicinity For more information about collection and recycling of waste batteries please contact your local municipality your waste disposal service or the point of sale where you purchased the items By ensuring compliance and conformance to proper disposal of waste batteries potential hazardous effects on human health is prevented and the negative impact of batteries and waste batteries on the environment is minimized thus contributing to the protection preservation and quality improvement of the environment RECORD YOUR MODEL NUMBER NOW WHILE YOU CAN SEE IT The model and serial number of your new M2 are located on the back of the cabinet For your future convenience we suggest that you record these numbers here NAD is a trademark
12. OUT The 12V TRIGGER OUT is used for controlling external equipment that is equipped with a 12V trigger input This output will be 12V when the M2 is ON and OV when the unit is either OFF or in standby mode 1 RIGHT SPEAKERS Connect the right speaker to the terminals marked R and R ensuring that the R is connected to the terminal on your loudspeaker and the R is connected to the loudspeaker s terminal There are two sets of RIGHT SPEAKER outputs and these are identical in function parallel connection and are provided for ease of Bi wiring with heavy audiophile cables Double check your speaker connections before powering up the M2 Always use heavy duty 16 gauge 1 5mm or thicker stranded wire to connect loudspeakers to your M2 The high current binding post terminals can be used as a screw terminal for cables terminating in spade or pin sockets or for cables with bare wire ends BI WIRING Most modern high quality loudspeakers offer the option of Bi wiring This separates the HF crossover from the LF crossover and offers enhanced performance by preventing LF return currents from affecting the HF performance If you decide to bi wire be sure to remove the links at the loudspeaker that connect the LF and HF sections these are provided for convenience when single wire connection is used Your loudspeaker instruction manual should cover this subject as well WARNING The M2 employs a f
13. OWER ERROR The VFD displays START UP ERROR POWER OFF The VFD displays OVERHEAT No power M2 always at standby mode cannot be switched ON using the front panel STANDBY button or remote control No sound No sound one channel M2 does not respond to remote control commands 12 POSSIBLE CAUSES Left output short circuit Right output short circuit Left and right output short circuit Left channel internal error Right channel internal error Left and right channel internal error Error with the internal power supply Internal initialization error when powered on The M2 is too hot due to insufficient ventilation The power cord is disconnected POWER switch shut down OFF AUTO TRIGGER switch set to AUTO position Power AC lead unplugged or power not switched ON The selected source input has no applied input signal at the corresponding rear panel input socket Volume control set to minimum level LOOP feature is enabled and a connection in loop setup is broken i e no connection to OPTICAL OUT not looped to OPTICAL LOOP IN etc Speaker not properly connected or damaged Input lead disconnected or damaged The remote control batteries are dead Batteries incorrectly inserted IR transmitter window on the remote control or IR receiver window on the front panel is obstructed M2 fr
14. VE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The equipment draws its nominal non operational power from the AC outlet with its POWER switch at the ON position The socket outlet shall be installed near the apparatus and shall be easily accessible CAUTION Changes or modifications to this equipment not expressly approved by NAD Electronics for compliance could void the user s authority to operate this equipment CAUTION REGARDING PLACEMENT To maintain proper ventilation be sure to leave a space around the unit from the largest outer dimensions including projections that is equal to or greater than shown below Left and Right Panels 10 cm Rear Panel 10 cm Top Panel 50 cm IMPORTANT SAFETY INSTRUCTIONS NOTES ON ENVIRONMENTAL PROTECTION At the end of its useful life this product must not be disposed Kw of with regular household waste but must be returned to a collection point for the recycling of electrical and electronic a equipment The symbol on the product user s manual and packaging point this out The materials can be reused in accordance with their markings Through re use recycling of raw materials or other forms of recycling of old products you are making an important contribution to the protection of our environment Your local administrative office can advise you of the responsible waste disposal point INFORMATION ABOUT COLLECTION AND DISPOSAL
15. d DVD section of L 54 VISO FIVE and VISO TWO CD PLAYER CONTROL for use with compatible NAD CD or SACD CD Players Set the DEVICE SELECTOR to 1 in order to gain access to these buttons REPEAT Repeat track file or whole disc RANDOM Play tracks or files in random mode 4 Open or close disc tray H Stop playback Il Pause playback temporarily 4 Go to beginning of current previous track or file gt Start playback PPI Go to next track or file DVD PLAYER CONTROL for use with compatible NAD DVD Players Set the DEVICE SELECTOR to 2 in order to gain access to these buttons TITLE Display DVD title menu MENU Access menu on a DVD disc DISP Access on screen display RTN Exit from a menu window A Y 4 gt Select an item in a menu ENTER Acknowledge menu selection 4 Open or close disc tray E Stop playback Il Pause playback temporarily I Go to the beginning of current previous track file or chapter gt Start playback PPI Go to next track file or chapter 11 REFERENCE TROUBLESHOOTING CONDITION The VFD displays PROTECTION LEFT AMP SHORT The VFD displays PROTECTION RIGHT AMP SHORT The VFD displays PROTECTION LEFT AND RIGHT SHORT The VFD displays PROTECTION LEFT CHANNEL ERROR The VFD displays PROTECTION RIGHT CHANNEL ERROR The VFD displays PROTECTION LEFT AND RIGHT ERROR The VFD displays MAIN P
16. e ON rE j ili GEP TA N A Se LS EO y OPTICAL 2 GS acer S rC Or Gus 8 ae lt OUT SINGLE ENDED S te pewre le BI WIRE i NAD M2 CIQ BALANCED 1 fii m D00000 ION a 0 DO0000000 Serial NoNo e Series 16 17 ATTENTION Please make sure that the M2 is powered OFF or unplugged before making any connections It is also advisable to power down or unplug all associated 1 components while making or breaking any signal or AC power connections BALANCED Connect XLR audio source to these connectors Ensure that proper pin configurations are followed Pin 1 Ground Pin 2 Positive signal live and Pin 3 Negative signal return SINGLE ENDED Use a twin RCA to RCA lead to connect to these sockets the left and right analog output of a CD player preamplifier or processor DIGITAL AUDIO COAX 1 2 Connect to the corresponding coaxial S PDIF format digital output of sources such as SACD CD players HDTV or satellite tuners and other components DIGITAL AUDIO OUT COAXIAL OUT Connect COAXIAL OUT to the corresponding S PDIF digital input of compatible devices such as CD recorders receivers computer soundcard or other digital processors DIGITAL AUDIO OPTICAL 1 2 Connect to the corresponding optical S PDIF format digital output of sources such as SACD CD players HDTV or satellite tuners and ot
17. e manufacturer or have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards 21 Safety Check Upon completion of any service or repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition 22 Wall or Ceiling Mounting The product should be mounted to a wall or ceiling only as recommended by the manufacturer 23 Heat The product should be situated away from heat sources such as radiators heat registers stoves or other products including amplifiers that produce heat WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE WITHIN THE PRODUCT S ENCLOSURE THAT MAYBE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO PERSONS THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USERTO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE SERVICING INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMO
18. eaker impedance This will result in perfectly flat frequency response at 20 kHz The effect of this filter may not be audible but it is measurable and it compensates for the small effect of the digital reconstruction filter that eliminates the 288 kHz sampling frequency of the amplifier The exception may be some electrostatic speakers that have very low impedance at high frequency The lower the HF impedance the greater the deviation from flat response POLARITY POSITIVE REVERSED Allow compensation for recordings that have reversed polarity Positive A positive sine wave at the input remains positive at the output Reversed A positive sine wave at the input is negative inverted or reversed at the output IMPORTANT NOTICE For all of the above menu options a chosen option or level setting will not immediately take effect upon selection There will be a slight delay or pause before the corresponding action or response is realized IDENTIFICATION OF CONTROLS FRONT PANEL RENAMING A SOURCE INPUT A particular source input can be renamed according to your preference You can use up to 20 characters in renaming a source input Below is the procedure on how to rename a source input Example Rename DIGITAL OPTICAL 1 to BD PLAYER 1 Press the front panel optical 1 button to select DIGITAL OPTICAL 1 input Then press and hold the front panel optical 1 button until DIGITAL OPTICAL 1 is shown in
19. he fuse holder Only replace the fuse with the same type size and specification IMPORTANT NOTICE Do not use any substitute fuses of different types ratings or values Failure to observe this precaution may cause damage to the amplifier circuits and may create a fire hazard and or defeat the safety built into the M2 thus voiding the warranty 15 LEFT SPEAKERS Connect the left speaker to the terminals marked L and L ensuring that the L is connected to the terminal on your loudspeaker and the L is connected to the loudspeaker s terminal There are two sets of LEFT SPEAKER output and these are identical in function parallel connection and are provided for ease of Bi wiring with heavy audiophile cables Refer also to RIGHT SPEAKERS above 16 RS 232 Connect this interface via RS 232 serial cable not supplied to any Windows compatible PC to allow remote control of the M2 through NAD s proprietary PC software or other compatible external controllers NAD is a certified partner of AMX Control4 Crestron and Savant and fully supports these external devices See your NAD audio specialist for more information 17 IRIN This input is connected to the output of an IR infrared repeater Xantech or similar or the IR output of another component to allow control of M2 from a remote location 18 GROUND TERMINAL The M2 requires a grounded AC receptacle or a separate earth ground Use this terminal to pro
20. her components IMPORTANT NOTICE For high end sources with higher sampling rates like 176kHz and 192kHz it is highly recommended that such sources be interfaced with the AES EBU IN connector The AES EBU IN is well suited to handle sources with ultra high sampling rates DIGITAL AUDIO OPTICAL LOOP OPTICAL LOOP OUT OPTICAL LOOP IN Connect OPTICAL LOOP OUT to the corresponding S PDIF digital input of compatible devices such as CD recorders receivers computer soundcard or other digital processors This OPTICAL LOOP OUT terminal is the same digital output that can be fed to a Mac or processor where the signal can be subjected to a wide library of third party crossover filters equalization or room correction programs The processed signal from the Mac or processor is then sent out through their corresponding Optical Out port into M2 s OPTICAL LOOP IN thereby completing the signal loop path Refer also to the item above about LOOP DIGITAL PROCESSOR LOOP under IDENTIFICATION OF CONTROLS FRONT PANEL AES EBU IN Digital audio stream from professional audio sources like SACD CD Players or processors can be connected to this XLR connector For high end sources with higher sampling rates like 176kHz and 192kHz it is highly recommended that such sources be interfaced with the AES EBU IN connector The AES EBU IN is well suited to handle such sources with high sampling rate DIGITAL SOFT CLIPPING Enables NAD s proprietary
21. lay returns to show the default information selected input and volume setting Press MENU button again to select another menu option LEVEL TRIM Adjust the BALANCED or SINGLE ENDED input signal level from 9dB to OdB or FIXED 9dB to OdB Increase or decrease the input signal level from 9dB to OdB This attenuates the signal before the Analog to Digital A D Converter If the analog input signal sounds distorted the input should be attenuated NOTE Attenuating too much can reduce the potential resolution of the A D Converter FIXED This setting should be selected when M2 is connected to the output of a preamplifier and is used primarily as a power amplifier Output level is fixed and the M2 s Volume Control is bypassed Adjust the level using the source signal s preamplifier volume or input level control SAMPLE RATE 48 kHz 96 kHz 192 kHz Select the user s preference for sample rate of the A D Converter Higher sampling rates allow for anti aliasing filters to take effect further outside the audible frequency range and are generally considered to sound better especially in the high frequencies You may need to reduce the sampling rate if you are using the Digital Processor Loop as many external devices will not operate at 96 kHz or 192 kHz SPEAKER COMPENSATION 2 Ohms 4 Ohms 5 Ohms 6 Ohms 7 Ohms 8 Ohms gt 8 Ohms Digital impedance compensation filter allows fine tuning of the top octave to match the sp
22. loating ground design External devices such as speaker switching or headphone adaptors that connect the left and right channels together must not be used with the M2 Left and right channels must never be connected to each other 12 POWER SWITCH The POWER switch supplies the master AC mains power for the M2 When this switch is at ON position the M2 is in standby mode as shown by the amber status condition of the standby LED Toggle the front panel s STANDBY button to switch ON the M2 or back to standby mode If you intend not to use the M2 for long periods of time such as when on vacation switch the POWER switch to the OFF position When the POWER switch is at OFF position the front panel STANDBY button or M2 remote control cannot activate the M2 13 AC MAINS INPUT The M2 comes supplied with a separate AC Mains cable Before connecting the cable to a live wall socket ensure that it is firmly connected to the M2 s AC Mains input socket first Always disconnect the AC Mains cable plug from the live wall socket first before disconnecting the cable from the M2 s Mains input socket IDENTIFICATION OF CONTROLS REAR PANEL 14 FUSE HOLDER In the unlikely event a fuse may need to be replaced unplug the AC cord from the wall Then remove all connections from the amplifier Use a flathead screw driver or similar to open the fuse holder via the slot indicated With the screw driver in place push and turn counterclockwise to open t
23. n to deactivate or turn off the loop feature LOOP is extinguished in the VFD thus returning to normal audio listening of a selected source input Check connections and speakers Check leads and connections Replace the remote control batteries Follow correct battery insertion setup Check IR windows and ensure clear line of sight from remote control to M2 Reduce sunlight room lighting ANALOG INPUT BALANCED SINGLE ENDED Input impedance Input sensitivity Maximum input level Frequency response A D Converter section Channel Separation DIGITAL INPUT COAXIAL OPTICAL AES EBU Input impedance Sample rate Channel Separation GENERAL SPECIFICATIONS Continuous output power ref 20 Hz 20 kHz rated THD N 80 40 20 Rated distorsion SMPTE CCIF IM T I M distortion Rated distortion THD N with AES17 and AP passive 20kHz LP filters Clipping power IHF Dynamic power 8 Q 40 20 Maximum output current Signal Noise ratio Damping factor Frequency response POWER CONSUMPTION Normal operation Standby power Idle power DIMENSION AND WEIGHT Dimensions W x H x D Net weight Shipping weight Gross dimensions include feet volume knob and extended speaker terminals REFERENCE SPECIFICATIONS 36 kQ 200 pF 296 mV ref 100W 418 mV ref rated power 5 6 Vrms at 9cB level trim setting 0 3dB ref 10 Hz FS 2 FS 48 kHz 96 kHz 192 kHz gt 80dB ref 10 kHz 40
24. of NAD Electronics International a division of Lenbrook Industries Limited Copyright 2009 NAD Electronics International a division of Lenbrook Industries Limited QUICK START In case you simply cannot wait to experience the performance of your new NAD M2 Direct Digital Amplifier we provide the following QUICKSTART instructions to get you underway Please make all the connections to your M2 with the unit unplugged from the AC outlet It is also advisable to power down or unplug all associated components while making or breaking any signal or AC power connections 1 Connect your speakers to the LEFT and RIGHT speaker terminals and input sources to the applicable M2 rear panel input sockets WARNING The M2 employs a floating ground design External devices such as speaker switching or headphone adaptors that connect the left and right channels together must not be used with the M2 Left and right channels must never be connected to each other 2 Make sure that the OFF AUTO trigger switch at the M2 rear panel is set to OFF Connect the AC cord to M2 s AC Mains input and then plug into an AC outlet WARNING For optimal performance the M2 requires a grounded AC receptacle or a separate earth ground Ensure the proper grounding of your system 3 Set the rear panel POWER switch to the ON position The Standby LED will illuminate amber standby mode 4 Press the front panel STANDBY button to turn ON the M2 The Standby LE
25. ont panel is in very bright sunlight or ambient light POSSIBLE SOLUTIONS Shut down M2 by turning off the rear panel POWER switch If there is no action undertaken the M2 will shut down itself go to standby mode within 10 seconds the fault happened Check for any short circuit at the left and or right channel output or LEFT and or RIGHT speakers before restarting the M2 again Shut down M2 by turning off the rear panel POWER switch If there is no action undertaken the M2 will shut down itself go to standby mode within 10 seconds the fault happened Restart again the M2 by switching ON the rear panel POWER switch if you have shut down the M2 via the POWER switch and then pressing the front panel STANDBY button or remote control s ON button Shut down M2 by turning off the rear panel POWER switch Ensure that there is adequate space below above and to the sides of the M2 to allow proper air flow After the M2 has cooled down normal operation will be restored Plug the power cord into the wall outlet securely Set the POWER switch to ON position Slide the OFF AUTO TRIGGER to OFF position Check if AC lead is plugged in and POWER switched ON Check that there is active input signal applied at the corresponding rear panel input socket Turn Volume control up to audible level Check your loop connection setup Press loop button agai
26. perly ground your M2 A ground lead wire or similar can be used to connect the M2 to ground via this ground terminal After insertion tighten the terminal to secure the lead BARE WIRES AND PIN CONNECTORS Bare wires and pin connectors should be inserted into the hole in the shaft of the terminal Unscrew the terminal s bushing until the hole in the screw shaft is revealed Insert the pin or bare cable end into the hole and secure the cable by tightening down the terminal s bushing Avoid any danger of bare metal from the cables touching the rear panel or another connector SPADE CONNECTORS These should be slotted under the terminal s screw bushing which is then fully tightened Ensure the connector is tightly secured and there is no danger of bare metal from spade connectors touching the rear panel or another connector as this may cause damage IDENTIFICATION OF CONTROLS REAR PANEL EXAMPLE ILLUSTRATION OF GROUNDING THE M2 VIA THE REAR PANEL GROUND TERMINAL NOTES The above illustration shows the M2 being connected to ground via a metal water pipe There maybe other grounding conductor points in your home Consult with a licensed electrician to properly locate or correctly install a grounding conductor in your home NAD is not responsible for any malfunction damage or costs associated with the installation connection or grounding of your M2 The grounding wire is not supplied with your M2 DIGITAL POWERDR
27. recommended by the manufacturer A product and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the product and cart combination to overturn 10 Ventilation Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to 1 Power Sources This product should be operated only from the type of power source indicated on the marking label If you are not sure of the type of power supply to your home consult your product dealer or local power company The primary method of isolating the amplifier from the mains supply is to disconnect the mains plug Ensure that the mains plug remains accessible at all times Unplug the AC power cord from the AC outlet if the unit will not be used for several months or more 12 Grounding or Polarization This product may be equipped with a polarized alternating current line plug a plug having one blade wider than the other This plug will fit into the power outlet only one way This is a safety feature If you are unable
28. through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill liquid of any kind on the product WARNING THE APPARATUS SHOULD NOT BE EXPOSED TO DRIPPING OR SPLASHING AND OBJECTS FILLED WITH LIQUIDS SUCH AS VASES SHOULD NOT BE PLACED ON THE APPARATUS AS WITH ANY ELECTRONIC PRODUCTS USE CARE NOT TO SPILL LIQUIDS INTO ANY PART OF THE SYSTEM LIQUIDS CAN CAUSE A FAILURE AND OR A FIRE HAZARD IMPORTANT SAFETY INSTRUCTIONS 19 Damage Requiring Service Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions a When the power supply cord or plug is damaged b If liquid has been spilled or objects have fallen into the product c If the product has been exposed to rain or water d If the product does not operate normally by following the operating instructions Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation If the product has been dropped or damaged in any way f when the product exhibits a distinct change in performance this e indicates a need for service 20 Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by th
29. to insert the plug fully into the outlet try reversing the plug If the plug should still fail to fit contact your electrician to replace your obsolete outlet Do not defeat the safety purpose of the polarized plug 13 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the product 14 Outdoor Antenna Grounding If an outside antenna or cable system is connected to the product be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV system installer s attention to Section 820 40 of the NEC which provides guidelines for proper grounding and in particular specifies that the cable ground shall be connected to the grounding system of the building as close to the point of cable entry as practical 3 ee _ _

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