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1  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).

2  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.

3  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.

4  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 other 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.

5  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.

6  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.

7  digital Soft clipping™:

 Enables NAD’s proprietary 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.

8  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.

IDENTIFICATION OF CONTROLS

rear panel

16

17

18

1

8

7

5

6

4

3

2

9 10

11

12

13

14

15

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 
components while making or breaking any signal or AC power connections.

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Summary of Contents for M2 - CONNECTING A SUBWOOFER

Page 1: ...ENGLISH FRANÇAIS ESPAÑOL ITALIANO DEUTSCH NEDERLANDS SVENSKA РУССКИЙ Owner s Manual M2 Direct Digital Amplifier ...

Page 2: ...ly 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 u...

Page 3: ...nded 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 ARROWH...

Page 4: ...municipal waste 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 servic...

Page 5: ... LED indicator will turn from amber to blue and illuminate the VFD 5 Press the corresponding front panel input button of your preferred source input 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 dama...

Page 6: ...N rear panel connector as the active input 10 BALANCED Select the source connected to the BALANCED L and BALANCED R rear panel connectors as the active input 11 SINGLE ENDED Select the source connected to the SINGLE ENDED L and SINGLE ENDED R rear panel terminals as the active input 12 LOOP DIGITAL PROCESSOR LOOP Allow the insertion of external digital filters into the signal path This is the digi...

Page 7: ...nstruction 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 a...

Page 8: ... IDENTIFICATION OF CONTROLS FRONT PANEL 6 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...

Page 9: ...st Always disconnect the AC Mains cable plug from the live wall socket first before disconnecting the cable from the M2 s Mains input socket 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 ...

Page 10: ...rounding wire is not supplied with your M2 DIGITAL POWERDRIVE 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 Mus...

Page 11: ...2 REMOTE CONTROL 4 1 3 5 2 6 7 8 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 Open or close disc tray Stop playback Pause playback temporarily Go to beginning of current previous track or file Start playback Go to next track ...

Page 12: ...own normal operation will be restored No power The power cord is disconnected Plug the power cord into the wall outlet securely POWER switch shut down Set the POWER switch to ON position M2 always at standby mode cannot be switched ON using the front panel STANDBY button or remote control OFF AUTO TRIGGER switch set to AUTO position Slide the OFF AUTO TRIGGER to OFF position No sound Power AC lead...

Page 13: ...0kHz LP filters 0 02 ref 20Hz 20kHz 100mW rated power Clipping power 250W ref 1 kHz 8Ω 0 1 THD IHF Dynamic power 8 Ω 300W 4 Ω 450W 2 Ω 600W Maximum output current 27A Signal Noise ratio 95dB A weighted ref 1W 118dB A weighted ref 200W Damping factor 2000 ref 20Hz 200Hz Frequency response 0 3dB ref 10 Hz FS 2 FS 32 kHz 96 kHz 192 kHz Power Consumption Normal operation 500W ref 100 240V AC 50 60 Hz ...

Page 14: ...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 ...

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