NEDERLANDS Owner’s Manual SVENSKA DEUTSCH ITALIANO ESPAÑOL FRANÇAIS Direct Digital DAC ENGLISH M51 РУССКИЙ ®
IMPORTANT SAFETY INSTRUCTIONS ENGLISH SAVE THESE INSTRUCTIONS FOR LATER USE. FOLLOW ALL WARNINGS AND INSTRUCTIONS MARKED ON THE AUDIO EQUIPMENT. FRANÇAIS ESPAÑOL ITALIANO DEUTSCH NEDERLANDS SVENSKA 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.
FRANÇAIS THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. ESPAÑOL When the power supply cord or plug is damaged. If liquid has been spilled, or objects have fallen into the product. If the product has been exposed to rain or water. If the product does not operate normally by following the operating instructions.
IMPORTANT SAFETY INSTRUCTIONS ENGLISH 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. FRANÇAIS The materials can be reused in accordance with their markings.
INTRODUCTION As with all our products, NAD’s “Music First” design philosophy guided the M51 design that it can confidently promise you both state-of-the-art technology and audiophile-quality music listening for years to come. We encourage you to take a few minutes now to read right through this manual. Investing a little time here at the outset might save you a good deal of time later, and is by far the best way to ensure that you make the most of your investment in the M51.
IDENTIFICATION OF CONTROLS FRONT PANEL ENGLISH M51 direct digital DAC input © NAD M51 FRANÇAIS 1 2 ESPAÑOL 1 STANDBY BUTTON • Press this button to switch ON the M51 from standby mode. The Standby LED indicator will turn from amber to blue and illuminate the VFD. • Pressing the STANDBY button again turns the unit back to standby mode. NOTE In order to turn ON the M51 from standby mode or back to standby mode, the rear panel POWER switch must be in the ON position.
IDENTIFICATION OF CONTROLS 2 CHANNEL AUDIO OUT R BALANCED DIGITAL AUDIO INPUT ENGLISH REAR PANEL 100-240V ~ 50/60Hz L BALANCED L +12V TRIGGER OUT IR IN RS 232 +12V TRIGGER POWER ON R UNBALANCED AES/EBU COAXIAL OPTICAL USB HDMI 1 HDMI 2 HDMI VIDEO OUT IN UPGRADE 1 2 3 4 5 6 7 8 9 10 11 12 FRANÇAIS © NAD M51 13 5 USB • Using Type A to Type B cable connector (not supplied), interface computer audio to this asynchronous Type B USB input to directly stream 24/192 content fr
IDENTIFICATION OF CONTROLS REAR PANEL ENGLISH FRANÇAIS 10 +12V TRIGGER IN With this input triggered by a 12V DC supply, the M51 can be switched ON remotely from standby mode by compatible devices such as amplifiers, preamplifiers, receivers, etc. If the 12V DC supply is cut off, the M51 will return to standby mode. • Connect this +12V Trigger input to the remote device’s corresponding +12V DC output jack using a mono cable with 3.5mm male plug.
IDENTIFICATION OF CONTROLS ENGLISH M50 REMOTE CONTROL 1 ON: Switch ON M51 from standby mode. OFF: Switch M51 to standby mode. 1 6 VOL 5/6: Increase or decrease loudness level. If “Volume Setup” is set to “Fixed” setting, [VOL 5/6] will have no effect and effectively disabled. MUTE: Temporarily mutes audio output or restores audio from mute mode. If “Volume Setup” is set to “Fixed” setting, [MUTE] will have no effect and effectively disabled.
USING THE M51 OTHER FEATURES ENGLISH NAD USB AUDIO POLARITY In order to stream your computer audio via M51, ensure that the Sound or Audio device setting of your computer is set to “NAD Audio 2.0 Output”. Allow compensation for recordings that have reversed polarity. Positive: A positive sine wave at the input remains positive at the output. Polarity is defaulted to “Positive” setting. Reversed: A positive sine wave at the input is negative (inverted) or reversed at the output.
REFERENCE No USB audio. POSSIBLE CAUSES POSSIBLE SOLUTIONS • NAD USB Audio is not installed in your PC. • Download NAD USB Audio driver from NAD website and install to your PC. • Sound or Audio device setting of your PC or Mac is not set to “NAD Audio 2.0 Output”. • Set your PC or Mac Audio or Sound device setting to “NAD Audio 2.0 Output”. • No music files being played back from your PC or Mac. • Playback a music file from your computer. • Mac OS not updated to include NAD USB Audio.
REFERENCE SPECIFICATIONS ENGLISH OVERALL SPECIFICATIONS Rated distortion (THD+N with AES 17 filter) <0.0005% (ref. 1 kHz 0 dBFS) <0.002% (ref. 1 kHz -60 dBFS) FRANÇAIS IM distortion <0.0001% Signal-to-noise ratio < -123 dB (ref. 0 dBFS 2V out) Channel separation > -115 dB (ref. 0 dBFS Volume -1dB) Sample rate 32 kHz to 192 kHz (USB and digital S/PDIF) Frequency response ±0.5 dB (ref. 20 Hz – 96 kHz @ 192 KHz sample rate) Output level 2V (ref.
РУССКИЙ SVENSKA NEDERLANDS DEUTSCH ITALIANO ESPAÑOL FRANÇAIS ENGLISH
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