Nad's M3 User's Manual
Contents
1. e e p a N so eo fme m GIGI 2 EJ 6 4 SPEAKERS 4 i a 1 12 PRESS IN AND LIFT TAB TO REMOVE PLACE BATTERIES INTO OPENING BATTERY COVER OUT FROM RECESS ENSURE THE CORRECT POLARITY IS OBSERVED 12 PRESS BATTERY COVER INTO PLACE UNTIL IT CLICKS CLOSED N RELEASE Identification of controls FRONT PANEL CONTROLS FIGURE 1 1 Standby Button The Standby Button turns on and to standby the M3 This button will only function when the Status Condition LED is either blue representing the on state or amber representing the standby state 2 Status Condition L E D Standby When this L E D is amber the M3 is in the standby state On When this L E D is blue the M3 is operating in the on state Protection When this L E D is red the M3 is in a protection state The M3 has sensors for abnormally high internal heat and signal level conditions that would damage either the M3 or speakers When these conditions return to normal the M3 reverts to the on state In the event the Status Condition L E D is red and PROTECT displays in the VFD for longer than 5 minutes switch off the M3 via the rear panel POWER switch check all speaker cables and connections for short circuits Resume normal operation If the Status Condition L E D continues to light red and PROTECT displays in the VFD contact qualified NAD service personnel for repair 3 Vacuum Florescent Display VFD The VF2. 67 0 lbs 30 5kg 1 From CD input to speakers output volume setting for 500mV in 8Q 1W out Minimum power per chnnel 20Hz 20kHz both channels driven with no more than rated distiortion 3 Maximum continuous power per channel 4Q and 8Q Gross dimensions include feet volume knob and extended speaker termianls Reference INPUT ORIGNAL NEW LABEL LABEL DISC DISC CD CD TUNER TUNER INPUT 4 INPUT 4 INPUT 5 INPUT 5 INPUT 6 INPUT 6 BALANCED BALANCED 19 www NADelectronics com 2005 NAD ELECTRONICS INTERNATIONAL A DIVISION OF LENBROOK INDUSTRIES LIMITED All rights reserved No part of this publication may be reproduced stored or transmitted in any form without the written permission of NAD Electronics International M3 Manual 08 05 Printed in China
3. 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 recommended by the manufacturer 9 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 11 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 e Main Power Disconnect When the power switch is in the Off position the integrated amplifier is not completely disconnected from the main power The primary method of isolating the integrated amplifier from the mains supply is to disconnect the mains plug Ensure that the mains plug remains accessible at all times When installing the
4. 7 FIGURE 6 FIGURE 7 c c mo a a a ie a i CROSSOVER FREQUENCY 9 biamp crossover frequency selection If one uses smaller shelf type speakers in H conjunction with a powered subwoofer refer to PRE OUT 2 section under Rear Panel FULL Connections and Controls the M3 allows the configuration of the speaker crossover frequency to match the bass response of the speakers Press the biamp button to toggle through the filter sequence A press longer than one second will advance the crossover r frequency selection as follows BIAMP CROSSOVER FULL RANGE HIGH PASS 40 Hz HIGH PASS 60 Hz HIGH PASS 80 Hz HIGH PASS 100 Hz and then return to FULL RANGE Release the biamp button to stop the sequence See figure 8 examples of the crossover frequency response diagram For connection of a subwoofer see Rear Panel Connections 4 20 30 40 50 60 7080 100 200 and Controls PRE OUT 2 Hz FIGURE 8 10 speakers The M3 has two sets of speaker terminals A and B One may switch on or off both sets together or separately Press the speakers button to toggle through the four speaker selections A press longer than one second will advance the speaker selection as follows SPEAKERS A SPEAKERS B SPEAKERS A B SPEAKERS Off and then return to the SPEAKER A selection Release the speakers button to stop the sequence Refer to biamp for setting up the crossover frequency above 11 volume set up Use the volu
5. Cable Socket Attach the M3 s power cable to this IEC socket first before connecting the power cable to the AC mains outlet Never disconnect the power cable from the IEC socket before disconnecting the power cable from the AC mains outlet Failure to follow this procedure may result in a possible electric shock hazard Always make sure that the POWER switch is in the OFF position and disconnect the power cable from the AC mains outlet before disconnecting or changing input connections on the back panel NOTE When connecting or disconnecting audio cables from the back panel of the M3 disconnect any auxiliary equipment from their AC mains outlets as well Failure to follow this procedure may result in possible damage to the either the M3 or other auxiliary equipment Operation M3 REMOTE CONTROL HANDSET FIGURE 3 The Remote Control handset handles all the key functions of the M3 and has additional controls to remotely operate both NAD DVD and CD machines see CD DVD Switch below It will operate up to a distance of 16ft 5m Alkaline batteries are recommended for maximum operating life Two AA R6 batteries should be fitted in the battery compartment at the back of the Remote Control handset When replacing batteries check that they have been put in the right way round as indicated on the base of the battery compartment Please refer to previous sections of the manual for a full description of individual functions When a command from t
6. product ensure that the plug is easily accessible e Non use Period Unplug the AC power cord from the AC outlet if the unit will not be used for a long period of time such as 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 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 gr
7. refer to the IR IN section below 9 SPEAKERS A Connect speakers with impedance of 4 Ohms or greater Connect the right speaker to the terminals market 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 Connect the terminals marked L and L to the left speaker in the same way When using both SPEAKERS A and SPEAKERS B connect speakers of impedance 8 Ohms or greater 10 SPEAKERS B Connect speakers with impedance of 4 Ohms or greater Connect the right speaker to the terminals market 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 Connect the terminals marked L and L to the left speaker in the same way When using both SPEAKERS A and SPEAKERS B connect speakers of impedance 8 Ohms or greater NOTES When connecting both SPEAKERS A and B connect speakers with impedance no less than 8 Ohms Always use heavy duty 16 gauge 2 square mm or thicker stranded wire to connect loudspeakers to your M3 The high current binding post terminals can be used as a screw terminal for cables terminating in spade or pin connectors or for cables with bare wire ends SPADE CONNECTORS Figure 3 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
8. sure to leave a space around the unit from the largest outer dimensions including projections equal to or greater than shown below Left and Right Panels 10 cm Rear Panel 10 cm Top Panel 50 cm IMPORTANT INFORMATION FOR UK CUSTOMERS DO NOT cut off the mains plug from this equipment If the plug fitted is not suitable for the power points in your C home or the cable is too short to reach a power point then obtain an appropriate safety approved extension lead or consult your dealer If nonetheless the mains plug is cut off REMOVE THE FUSE and dispose of the PLUG immediately to avoid possible shock hazard by inadvertent connection to the mains supply If this product is not provided with a mains plug or one has to be fitted then follow the instructions given below IMPORTANT DO NOT make any connection to the larger terminal which is marked with the letter E or by the safety earth symbol or coloured GREEN or GREEN AND YELLOW The wires in the mains lead on this product are coloured in accordance with the following code BLUE NEUTRAL BROWN LIVE As these colours may not correspond with the coloured markings identifying the terminals in your plug proceed as follows The BLUE wire must be connected to the terminal marked with the letter N or coloured BLACK The BROWN wire must be connected to the terminal marked with the letter L or coloured RED When replacing the fuse only a correctly rated and approved type s
9. A press longer than one second will advance the source selection to the next input as follows OFF DISC CD TUNER INPUT 4 INPUT 5 INPUT 6 BALANCED LOCAL and then return to OFF Release the record Z2 button to stop the sequence Furthermore the ZR3 remote control will allow direct selection of inputs see ZR3 Remote Control NOTE The record Z2 can monitor all inputs The record Z2 will maintain its last state even if the M3 is set to standby The M3 must be in its on state in order to use the record Z2 10 Identification of controls 6 mode The mode selector function is a convenient way to test the set up of the M3 For example use the Mono mode to check the speakers phase Setting the mode to Left or Right allows one to easily balance left signal inputs with right signal inputs Press the mode button to toggle through the four listening modes A press longer than one second will advance the mode selection to the next state as follows STEREO MONO LEFT RIGHT and then return to the STEREO listening mode Release the mode button to stop the sequence 7 balance Adjust LEFT and RIGHT balance simultaneously using the volume set up control Both LEFT and RIGHT levels are adjustable between 9 5 dB To adjust balance press the balance button once and then within 5 seconds rotate the volume set up control to adjust the either the LEFT or RIGHT balance level After about 5 seconds the balance menu will switch o
10. D provides visual information on all of the M3 s important modes settings and functions for both main and second zone locations 4 listen input selection Press the listen button to select an input A press longer than one second will advance the input selection to the next input as follows DISC CD TUNER INPUT 4 INPUT 5 INPUT 6 BALANCED and then return to DISC Release the listen button to stop the sequence Assigning User Names input selection Renaming inputs is advantageous when using auxiliary equipment not representing the default inputs For example a CD player with balanced outputs would connect to the balanced input Rename the balanced input to CD Player as follows Press and hold simultaneously the listen and record Z2 buttons until the curser flashes Rotate the volume set up control to the letter C then press the listen button to lock the selection and advance the curser Continue the procedure for the remaining letters of the name Press the record Z2 button to save the new user name NOTES e There is a maximum of 20 letters to each name The variables are lowercase letters uppercase letters numbers and miscellaneous punctuation symbols e Record each name you assign into the chart on page 17 to aid you for future reference in the event you wish to change the hook up and assignment of the inputs 5 record Z2 second zone output Press the record Z2 button to select the input as the recording source
11. M3 Dual Mono Integrated Amplifier Owners Manual Manuel d Installation Bedienungsanleitung Gebruikershandleiding Manual del Usuario Manuale delle Istruzioni Manual do Propriet rio Bruksanvisning ia Kiwi os Kus wa isl km muse IMPORTANT SAFETY INSTRUCTIONS e Save these instructions for later use e 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 wet 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
12. TORS U 4 ES a SERVICE ENTRANCE p EGUIPMENT GROUND CLAMPS 4 a GROUND WIRE gt g gt GI POWER SERVICE GROUNDING ANTENNA K UNIT HA gt ELECTRODE SYSTEM I GROUND e g Interior metal water pipe BONDING JUMPER y WIRE gt 1O PATERNAL Te 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 Introduction WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO CAUTION ALERT THE USER TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE WITHIN THE PRODUCT S DO NOT OPEN ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK TO CAUTION TO REDUCE THE RISK OF PERSONS ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PARTS INSIDE REFER SERVICING TO PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE SERVICING INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE CAUTION Changes or modifications to this equipment not expressly approved by NAD Electronics for compliance could void the users authority to operate this equipment QUALIFIED SERVICE PERSONNEL CAUTION REGARDING PLACEMENT To maintain proper ventilation be
13. bare metal from spade connectors touching the back panel or another connector as this may cause damage BARE WIRES AND PIN CONNECTORS Figure 3 Bare wires and pin connectors should be inserted into the hole in the shaft of the terminal Unscrew the speaker terminal s plastic 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 speaker cables touching the back panel or another connector Ensure that there is only 1 2 1cm of bare cable or pin and no loose strands of speakers wire 11 IR OUT 1 amp IR OUT 2 Use either one or both of these 3mm mini jack connectors to pass commands to other units fitted with a similar IR infrared input To function with other units connect the M3 s IR OUT to the IR input on the other unit Daisy chain the IR connections output to input so that control of a whole system from a single remote control facility is from one unit A single IR connection from a hi fi system in the main room will allow remote control of multi room systems NOTE Your custom installer or dealer can assist you in the proper setup and configuration of infrared multi room hi fi systems 13 Setup DB 9 Pin Function 2 Transmit Data 3 Receive Data 5 Signal Ground DB 9 pin out Assingment 14 12 IR IN Use this 3mm mini jack connector to pass commands from other unit
14. button The transport buttons now control NAD CD players ZR3 REMOTE CONTROL HANDSET FIGURE 5 1 ON OFF The M3 must be in its on state in order to use the ZR3 remote control Press ON to turn on the REC 2Z output press OFF to turn off the REC 2Z output Once the REC 2Z output is on one can select the source inputs NOTE the REC 2Z output is a fixed line level output The volume control of the M3 does not control the level of this output 2 Source Buttons There are 8 source buttons for direct input selection press the appropriate input button once the REC 2Z is in the on state 3 SOURCE Press the 4 or gt buttons to select the input as the recording source A press longer than one second will advance the source selection to the next input as follows OFF RECORD DISC RECORD CD RECORD TUNER RECORD INPUT 4 RECORD INPUT 5 RECORD INPUT 6 RECORD BALANCED RECORD LOCAL RECORD and then return to OFF RECORD Release the 4 or b buttons to stop the sequence 4 LOCAL Press this button to directly select the source the main zone is set to The REC Z2 output will automatically follow the input selection 16 Reference Problem NO SOUND NO SOUND ONE CHANNEL WEAK BASS DIFFUSE OR NO STEREO IMAGE REMOTE CONTROL HANDSET NOT WORKING POWER PROTECTION LED STAYS RED UPON TURNING POWER ON POWER PROTECTION INDICATOR TURNS RED DURING OPERATION Cause Power AC lead unplugged or power not switched on Incorrect M
15. e continuously on each channel and adjusts the power supply voltage for maximum undistorted dynamic power into the connected speaker at all times and under all operating conditions The signal processor also continuously measures temperature and average long term power and based on this information chooses the optimum voltage PowerDrive allows the M3 to sound far more powerful than its already impressive 180 watt per channel rating would suggest Totally effortless sound even at elevated levels is the hallmark of the PowerDrive amplifier The M3 utilizes a wideband current mode Class A voltage amp featuring large open loop compensated bandwidth and running from low nolse stabilised power supplies NAD s patented current amp output stage starts with lt 0 02 static and dynamic distortion open loop before feedback even into 3 ohms at 20 20k at all levels By utilizing small amounts of feedback the circuit returns distortion levels at all audible frequencies that are at limit of measurement less than 0 002 The super rugged output stage features 4 pairs of 150W discrete bipolar output transistors per channel for 50A peak undistorted output current Massive heat sinking assures a lifetime of trouble free operation Introduction MAIN FEATURES e Discrete high input impedance balanced input amp with greater than 70dB Common Mode rejection ratio across the entire frequency range e High input impedance class A amplifiers in the ma
16. ear sources of heat and damp Do not locate adjacent to or directly above the amplifier a turntable especially one with a moving coil pick up cartridge or a TV should since the M3 s power transformers generate a significant magnetic hum field The heat sink fins make it awkward to lift the M3 by grasping the left and right sides You may find it more practical to place your hands under the front and rear panels Much of the M3 s weight is near the front panel CAUTION The amplifier s weight must always rest on its bottom feet Never put the amplifier down on its rear panel with its front panel facing up Doing so risks damage to the input output connectors The integrated amplifier generates some heat even when idling requiring internal and external ventilation Allow adequate ventilation Do not place it in an enclosed position such a bookcase or cabinet that may impede the air flow through the ventilation slots Do not obstruct by papers or articles of clothing the ventilation slots on the top cover Furthermore it you want to locate the amplifier on a carpeted floor place a board under the amplifier in order to prevent it from sinking into the carpet blocking the air inlets on its bottom identification of controls 4 5 6 7 8 9 10 10 11 5 15 5 13 15 14 12 10 K CA identification of controls
17. esult of some very sophisticated analog engineering and rather surprisingly the use of digital control Freed of the constraints of traditional analog switches NAD s Director of Advanced Development Bjorn Erik Edvardsen devised an architecture using precision 1 resistors controlled by digital switches for all the level adjustments required for volume control balance control and tone control Yes we still believe in tone controls more on that later Input selection is via precision sealed reed relays A major advantage of this architecture in addition to its extremely precise performance is the ability to place controls in the most advantageous physical position within the circuit The signal never has to travel to the front panel for switching as with traditional amplifier designs Getting to the infinitesimal levels of noise and distortion of the M3 requires very careful circuit layout as only tiny changes in the signal path can have large effects on performance Keeping signal paths as short as possible is also greatly aided by the use of SMD miniature surface mount components and multi layer PCBs circuit boards LUXURIOUS STYLING AND INTELLIGENT CONTROL The design brief reads The industrial design must create a physical presence that is powerful dynamic and solid yet refined and elegant We wanted a design that will still look fresh and new a decade from now a design with classic proportions and understated details We al
18. ff saving the balance settings in memory BASS FREQUENCY RESPONSE 8 tone Press the tone button to activate or deactivate the tone controls A press longer than one second will toggle the tone option between TONE ACTIVE and TONE DEFEAT To bypass bass treble and spectral tilt controls completely select TONE DEFEAT direct bypass ti of all analogue filters To enable TONE ACTIVE toggle the tone button to display TONE 5 0 ACTIVE and then release the tone button Then within a few moments the tone controls will display Then press the tone button to toggle through bass treble and tilt functions Selecting TONE ACTIVE allows one to adjust the bass treble and spectral tilt settings of the M3 via the volume set up control Bass and treble levels are adjustable between DR E e 5dB The spectral tilt adjustment allows for simultaneous 3dB bass and treble offsets When adjusting bass and treble levels the spectral tilt value will remain OdB When N NSE adjusting the spectral tilt the bass and treble values will follow the spectral tilt adjustment simultaneously See figures 6 amp 7 examples of bass treble and tilt frequency response gt dlagrams 2 A TILT FREQUENCY RESPONSE i 0
19. g all attenuation at the ideal point in the circuit architecture Low impedance stepped tone controls provide 5 db of boost cut in the bass and treble regions or can be configured to provide variable slope or spectrum tilt at 3dB per octave Biamp function allows the use of a second amplifier or active subwoofer PREOUT 1 and offers a high pass filter function on PREOUT 2 with selectable 40Hz 60Hz 80Hz 100Hz or Full Range options These are analog 2nd order filters configured around the low impedance differential Class A output stage of the preamp This output stage also employs proprietary distortion cancellation circuitry A balanced line input is also provided using identical JFET buffers feeding a discrete differential amp and yielding common mode rejection in excess of 80dB Separately regulated DC supplies are derived from the dual mono power supply Copper buss bars and discrete regulators keep circuit noise to an absolute minimum throughout The display and digital functions operate from an independent power supply to prevent any interference with the analog signal path POWER AMP HIGHLIGHTS The M3 features a Dual Mono design with separate unregulated and discrete regulated supplies for different stages of the 2 channels The custom wound Toroidal transformers use proprietary magnetic shielding technology High current rectifiers feed low ESR 105C filter capacitors NAD s PowerDrive technology measures load impedanc
20. he remote control is received the Status Condition L E D will blink 1 ON OFF The ON OFF buttons turn on and to standby the M3 These buttons will only function when the Status Condition LED is either blue representing the on state or amber representing the standby state To turn on the second zone output first enable the REC Z2 button 3 as shown by the red LED beside the REC Z2 button then press the ON button To turn off the second zone output enable the REC Z2 button then press the OFF button For further explanation of the second zone output controls see REC Z2 button below 2 Source Buttons There are source buttons as well as a REC Z2 button For direct input selection press the appropriate input button 3 REC Z2 Select this button to switch the remote control to a second zone remote control The Source Buttons for the second zone will be active as shown by the red LED beside the REC Z2 button There is a 3 second window for selecting a source before this button times out Select the source within this duration 4 SPEAKERS A 8 B Select to enable either speaker A B or both A amp B 5 MODE Press the MODE button to toggle through the four listening modes A press longer than one second will advance the mode selection to the next state as follows STEREO MONO LEFT RIGHT and then return to the STEREO listening mode Release the MODE button to stop the sequence 6 MUTE Press the MUTE Button to temporarily swi
21. hould be used and be sure to re fit the fuse cover IF IN DOUBT CONSULT A COMPETENT ELECTRICIAN This product is manufactured to comply with the radio interference requirements of EEC DIRECTIVE 89 68 EEC and 73 23 EEC NOTES ON ENVIRONMENTAL PROTECTION At the end of its useful life this product must not be disposed of with regular household waste but must be returned to a collection point for the recycling of electrical and electronic 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 RECORD YOUR MODEL NUMBER NOW WHILE YOU CAN SEE IT The model and serial number of your new Integrated Amplifier located on the back of the cabinet For your future convenience we suggest that you record these numbers here Model No Serial No Introduction ANALOG SOUND DIGITAL CONTROL The M3 is NAD s concept of the ideal musical companion capable of transporting the listener to that place where the music simply exists in its own perfect space For this task we have pushed classical analog circuit design to unprecedented levels of performance The total lack of audible noise and distortion is the r
22. in signal path e Proprietary stepped distributed low impedance volume control for ultra low noise distortion at all volume levels e PowerDrive current mode power amplifier and NAD s patented output stage with ultra low distortion that drive low impedance loads e Separate low noise low impedance regulated supplies for each channel s inputs and driver stages WHAT S IN THE BOX Packed with your M3 Dual Mono Integrated Amplifier you will find e A removable AC cable e The M3 remote control with batteries e The ZR3 second zone remote control with battery e This Owner s Manual SAVE THE PACKING Please save the box and all of the packaging in which your M3 arrived Should you move or otherwise need to transport your integrated amplifier 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 QUICK START 1 Connect the speakers to the rear Speaker sockets and sources to the relevant rear input sockets 2 Plug in the AC Mains cable to the back IEC socket of the M3 3 Switch to ON the POWER button on the rear panel to turn the M3 to standby 4 Press power button on the front panel to turn on the M3 5 Press and toggle the listen button to select the source A NOTE ON INSTALLATION Install this unit on any level surface that is strong enough to support its weight Avoid placing the unit in direct sunlight or n
23. lume level of the PRE OUT 1 Adjust the biamp high pass frequency settings for PRE OUT 2 using the biamp Crossover Frequency Selection to match the frequency response of the speakers connected to the M3 s speakers A or B terminals Biamp Connection If you choose to use the biamp feature of the M3 first power off the M3 and then disconnect the M3 from the mains voltage Disconnect the MAIN IN PREOUT 1 jumper Figure 9 1 for each channel Connect the PRE OUT 1 output left and right to an active subwoofer Figure 9 2 using high quality RCA type patch cables Using a set of short high quality RCA type patch cables jumper from PREOUT 2 to MAIN IN both left and right channels Figure 9 3 If available on the subwoofer match the subwoofer crossover settings with the biamp crossover settings of the PRE OUT 2 Refer to Front Panel Controls section biamp control for the selection of crossover frequencies available FIGURE 9 INPUT6 MAININ PRE OUT 1 PRE OUT 2 REC Z2 2 23 gE i N A Jump RCA Jumpers N aR 12 Setup 8 REC Z2 This output is a steady state line level output Connect this output to recording equipment such as an audio tape deck or an A D Converter recorder One may also connect this output to an auxiliary piece of audio equipment such as an integrated amplifier for multi zone operation In such a case use this output in conjunction with the ZR 3 remote control and IR IN
24. me set up control for volume control balance adjustment tone controls and renaming inputs The default turn on volume level setting for the volume is 20 dB The turn on volume level will always revert to 20 dB if the volume level is set to greater than 19 dB before switching to standby 11 Setup REAR PANEL CONNECTIONS AND CONTROLS FIGURE 2 1 DISC Connect line level audio Left and Right to this input from a video disc or DVD player 2 CD Connect line level audio Left and Right to this input from a CD player 3 TUNER Connect line level audio Left and Right to this input from a tuner radio 4 INPUT 4 6 Connect any audio source to these line level audio Left and Right inputs Reassign new names by following the Assigning User Names procedure under the Front Panel Controls section 5 BALANCED Connect XLR audio source to these inputs Make sure the configuration is standard as follows pin 1 is chassis ground earth pin 2 is signal live and pin 3 is signal return Reassign a name to this input by following the Assigning User Names procedure under the Front Panel Controls section 6 MAIN IN PRE OUT 1 The primary link between the M3 s dual mono block preamplifier and dual mono block amplifier is by these jumpers This connection supplies the full frequency range output NOTE The biamp Crossover Frequency Selection settings do not affect this output PRE OUT 2 This secondary preamplifier output follows the vo
25. ng thick 2mm mild steel plates with a front panel employing extruded aluminium and die cast zinc in its construction Special attention was paid to the control of mechanical resonance as this can affect sonic performance Special isolation feet use aluminium and silicon rubber in a vibration damping configuration All signal connectors are heavy duty gold plated types specifically engineered for the NAD Masters Series components Finished inside and out the M3 utilizes powder coating and advanced automotive paint finishes creating an enduring and elegant mechanical package PREAMP DESIGN The preamp uses all discrete low noise high impedance J FET buffer amps and very high quality reed relay switches at the preamp input Special high current low output impedance Class A gain modules provide tremendous dynamic headroom and high output current combined with a exceptional S N ratio in excess of 100dB IHF Introduction The volume attenuator is very unique in that it uses discrete 1 precision resistors that keep impedance and noise very low It is arrayed in 3 stages to reduce the residual noise in each amplifying stage and prevent the cascade effect of noise that is present in most preamp designs This circuit also provides the balance control and as a result channel separation is superb and inter channel cross talk is virtually eliminated These resistor arrays are switched using 15 volt digital switches under software control keepin
26. ode selected Mute on Rear Pre out Main in amp links not fitted No speakers selected Balance control not centred Speaker not properly connected or damaged Input lead disconnected or damaged Mode selected to Left or Right or Mono channel Speakers wired out of phase Biamp mode selected with high pass filter Mode set to Left or Right or Mono channel Batteries flat or incorrectly inserted IR transmitter or recelver windows obstructed IR receiver in direct sun or very bright ambient light ZR3 remote used with M3 in Standby Loudspeakers cabling has a short circuit Amplifier has over heated Overall impedance of loudspeakers too low Solution Check if AC lead is plugged in and power switched on Select Stereo Mode Switch off Mute Fit links Select the appropriate speakers A B Centre Balance control Check connections and speakers Check leads and connections Select Stereo Mode Check connections to all speakers in the system Set biamp to FULL RANGE Select Stereo Mode Check or replace batteries Remove obstruction Place unit away from direct sun reduce amount of ambient light Turn on M3 M3 must be in ON to use ZR3 Turn amplifier off and check loudspeaker cable connections for both speakers at amplifier s back panel and loudspeakers Turn amplifier on Turn amplifier off Make sure ventilation slots on top and bottom of amplifier aren t blocked After amplifier has cooled down turn back on Ens
27. oduct 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 e If the product has been dropped or damaged in any way f when the product exhibits a distinct change in performance this indicates a need for service 20 Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by the 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 SERVICE 7 ENTRANCE lh b CONDUC
28. ounding electrodes and requirements for the grounding electrode NOTE TO CATV SYSTEM INSTALLER e 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 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 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 pr
29. s fitted with a similar IR infrared output To function with other units connect the M3 s IR IN to the IR output on the other unit Daisy chain the IR connections input to output so that control of a whole system from a single remote control facility is from one unit A single IR connection from a hi fi system in a second room will allow remote control of multi room system For multi room systems without auxiliary audio equipment one may connect the IR IN to an IR repeater Xantech or similar to allow hi fi system control from a remote location NOTE Your custom installer or dealer can assist you in the proper setup and configuration of infrared multi room hi fi systems 13 12 V TRIGGER OUT This 12V TRIGGER OUT will follow the powered state of the M3 Use this 3mm mini jack connector to pass 12 volts at a maximum current of 50 milliamps to auxiliary equipment such as a subwoofer or other audio equipment When the M3 is in standby the output of this jack will be O Volts When the M3 is in the on state the output will be 12 volts NOTES The centre conductor hot of the 3 mm jack is the control signal The outside conductor shield is the ground return path Your custom installer or dealer can assist you in the proper setup and configuration of the 12V TRIGGER OUT interface 14 RS 232 Using a Windows operating system personal computer one can remotely control the M3 with NAD s proprietary interface control software This remo
30. so wanted an amplifier that was not only easy to operate but also very flexible and complete in its control options Unlike many high performance amplifiers the M3 includes a full suite of convenience features Speaker switching for two pairs of speakers and very flexible tone controls are provided as is a Zone 2 output with its own independent set of commands and dedicated ZR3 remote control Front panel controls use a multi function knob and buttons to quickly navigate all amplifier functions All operating conditions are clearly displayed on a 2 line dot matrix VFD display Direct access is available to many functions via the M3 remote handset The M3 handset also features basic controls for the matching NAD DVD SACD player Performance features include a multi stage precision volume attenuator with 0 5dB steps and a range of 87 5dB a remote balance control with 0 5dB steps and a Mode control that allows stereo left only right only and mono settings Tone controls offer bass and treble adjustment as well as a spectral tilt option that is highly effective at correcting the tonal balance of many recordings by simultaneously increasing the bass and decreasing the treble and vice versa to create a warmer or cooler balance We have also included a second set of preamp outputs and a switchable high pass filter for the internal amplifier to allow easy implementation of an active subwoofer or biamplification The rugged chassis is built usi
31. tch off the sound to the speakers The word MUTE will continuously display in the VFD Press MUTE again or the volume control to restore sound The mute function does not affect recordings made using the REC Z2 output but will affect the signal going to both Preamp outputs 7 VOL Volume Press the VOL A or W buttons to respectively increase or decrease the loudness level Release the button when the desired level is reached The VFD on the front panel will indicate the level set The Master Volume buttons do not affect recordings made using the REC Z2 outputs but only affect the signals going to the Preamp outputs 8 BALANCE Press the balance button once and then within 5 seconds press the VOL A or W buttons respectively to adjust the either the LEFT or RIGHT balance level After about 5 seconds the balance menu will switch off saving the balance settings in memory 9 TONE Press the TONE button to activate or deactivate the tone controls Release the TONE button to stop the sequence To bypass bass treble and spectral tilt controls completely select TONE DEFEAT direct bypass of all analogue filters Selecting TONE ACTIVE allows one to adjust the bass treble and spectral tilt settings of the M3 by pressing the VOL A or W buttons respectively Bass and treble levels are adjustable between 5dB The spectral tilt adjustment allows for simultaneous 3dB bass and treble offsets When adjusting bass and treble levels the spectral tilt
32. te control facility employs a functional image of the M3 s front panel as the GUI graphical user interface This connector is a standard DB 9 RS 232 configuration Use an off the shelf DB 9 RS 232 serial cable to connect between your Windows PC s DB 9 RS 232 connector and the M3 s RS 232 connector NOTES Refer to the Installation and Operation of M3 Control Software section Use a standard DB 9 male to DB 9 female RS 232 serial cable between your Windows PC and the M3 Do not use a null modem type of RS 232 cable Some Windows PC s may not have RS 232 serial connectors In this event use a standard off the shelf RS 232 to USB adaptor to connect to your Windows PC Follow the instructions that come with the RS 232 to USB adaptor for setting up the adaptor Your custom installer or dealer can assist you in the proper setup and configuration of the RS 232 interface Neither a DB 9 RS 232 serial cable nor a RS 232 to USB adaptor is supplied with the M3 15 POWER Switch The POWER switch supplies the master AC mains power for the M3 When this switch is in the ON position the M3 is in standby as shown by the amber Status Condition L E D above the power switch on the front panel If you intend not to use the amplifier for long periods of time switch the POWER switch to the OFF position NOTE When the POWER switch is in the OFF position neither remote control ZR3 M3 nor the front panel Power switch will activate the M3 16 IEC Power
33. ure the overall loudspeaker impedance isn t below 4 ohms Check loudspeaker cables for short circuits 17 Reference SPECIFICATIONS PRE AMP SECTION Line level inputs Input impedance R C Balanced Input impedance R C Input sensitivity rated power Frequency response 5Hz 70kHz LINE LEVEL OUTPUTS Output impedance Tape Signal noise ratio TONE CONTROLS Bass Treble Spectral Tilt 12VOLT TRIGGER OUT Output Voltage Minimum Output Current Maximum Short Circuit Current POWER AMP SECTION Continuous output power into 4 80 Rated Distortion THD 20Hz 20kHz Clipping power IHF dynamic headroom at 8Q IHF dynamic power at 8Q IHF dynamic power at 4Q IHF dynamic power at 2Q Damping factor ref 80 50Hz Input impedance Input Sensitivity for rated power into 8Q Voltage gain Frequency response 20Hz 20kHz Frequency response at gt 80kHz Signal noise ratio ref 1W Signal noise ratio ref rated power PHYSICAL SPECIFICATIONS Dimensions W x H x D Net Gross Net Weight Shipping Weight 150kQ 500pF 120kQ 100pF 446mV lt 0 3dB 1000 Source Z 1kQ gt 110dB AWTD 50B 50B 30B 12V 20 gt 40mA lt 60mA 180W 23dBW 0 004 220W 23 4dbW 3dB 300W 24 7dBW 520W 27 2dBW 700W 28 4dBW gt 150 20kQ 680pF 1 38V 29dB 0 03dB 30B gt 107dB AWTD gt 130dB 17 2 x 5 3 x 15 2 435 x 135 x 386mm 17 2 x 5 8 x 17 2 435 x 147 x 435mm 51 8 Ibs 23 5 kg
34. value will remain OdB When adjusting the spectral tilt the bass and treble values will follow the spectral tilt adjustment simultaneously 15 Operation 10 BI AMP Press the BI AMP button to toggle through the filter sequence A press longer than one second will advance the crossover frequency selection as follows BIAMP CROSSOVER FULL RANGE HIGH PASS 40 Hz HIGH PASS 60 Hz HIGH PASS 80 Hz HIGH PASS 100 Hz and then return to FULL RANGE Release the BI AMP button to stop the sequence 11 DVD CD Switch Inside the battery compartment is a selection switch for the M3 remote control see figure 4 Position 1 setting controls the NAD DVD players while position 2 setting controls NAD CD players Using a paper clip select either position 1 or 2 taking care not to damage the switch with excessive force 12 Navigation Transport Buttons DVD With the DVD CD Switch set to the position 1 setting the navigation buttons amp W lt and ENTER will allow navigation of DVD on screen menus The TITLE MENU DISP display and RTN return buttons function as they do on an NAD DVD s remote control The transport buttons now control NAD DVD players 12 Navigation Transport Buttons CD With the DVD CD Switch set to the position 2 setting the navigation buttons will be inoperative The TITLE button will become a Repeat function button the MENU button will become a Random function button and the DISP button will become a Time function
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