NAD M-4 Brochure

Masters Series – M4 Analogue/Digital Tuner

The NAD M4 is the most advanced tuner ever developed by NAD. Matching the style, build quality and performance of our award winning Masters Series components, the M4 performance is at the outer limits of radio broadcast quality. Combining a highly sensitive FM/AM tuning section with the latest digital broadcast technology, the M4 extracts maximum sound quality from every radio format.

PERFORMANCE

Whether listening to an analogue broadcast on the FM or AM bands, or a digital broadcast, the M4 offers the highest levels of interference free reception. In the FM Tuner section a shielded multi-stage MOSFET RF features tuning in 0.0125 MHz steps for accurate tuning and the ability to compensate for multi-path contaminated signals. The M4 features a crystal controlled synthesized phase lock loop with IF counter for accurate VCO tuning, and a two stage loop ﬁlter for PLL output. In addition, the oscillator to synthesizer stage is buffered to keep spurious responses extremely well suppressed. Excellent sensitivity combined with high overload margins result in good station pulling power and clear reception, even in urban areas. Excellent selectivity and capture ratio allow clear reception of all stations on the often crowded FM dial. The IF stage features three ceramic ﬁlter stages for low distortion and excellent channel separation. Sound quality is not overlooked, with a double tuned FM detector for low distortion and frequency response correction and MPX ﬁlter to give improved audio frequency response without sacriﬁcing MPX rejection.

AM performance, while never able to achieve the low noise and distortion of FM broadcasting, is never-the-less highly sensitive with noise levels well suppressed. More importantly, it sounds open and dynamic.

- 40 Preset Station Memory

- RDS function displays Station ID and Radio Text from broadcast compliant stations

- FM Mute eliminates inter-station tuning noise

- FM Blend reduces noise of distant or “fringe” stations by reducing high frequency separation

- High sensitivity AM tuner

- Supports DAB Band III and L Band (230V version)

- XM Ready input for external XM Satellite module (120V version)

- Audiophile quality Burr Brown Digital to Analogue converters

- Audio speciﬁc Burr Brown OP Amps

- Separate power supplies for Digital Control and Audio stages

- RS-232 port interfaces with external control systems (Crestron and AMX certiﬁed)

- Rear panel IR Input allows easy interface to external IR sensors

- NAD Build Artistry construction

- M4 Remote Control

Digital Audio Broadcast combines noise-free performance with an unprecedented selection of stations. Since DAB uses audio compression (MP2) to maximize station selection, it is critical that the decoding and conversion to analog be as accurate as possible. Operating at a 48kHz sampling rate and 24 bit word length, DAB broadcasts have low distortion and wide dynamic range. The M4 excels at extracting the maximum sound quality from digital broadcast using premium quality devices and advance circuit design in the digital and analogue stage.

SIMPLICITY

By combining all broadcast formats in one elegant component the M4 is the perfect way to add radio to a Masters Series stereo or surround sound system. Auto tuning ﬁnds all the stations available in your locale and the station preset memory allows you to save your favourites for fast and easy recall. These can be accessed from the front panel or via the supplied IR remote control. Additionally, an RS-232 port, IR input and 12V trigger allow

the M4 to be fully integrated with advanced automated control systems.

The clear two line dot matrix display shows information about the broadcasts being received, which may include station ID and song and artist information.

230V Version Only

Speciﬁcations

FM Tuner Section

Tuning Range (0.0125MHz steps) Usable Sensitivity Signal/Noise Ratio Mono Stereo Frequency Response (20 Hz - 15 kHz) Channel Separation 30 Hz 1 kHz 10 kHz Capture Ratio AM Suppression Image Rejection I.F. Rejection Pilot Suppression

AM Tuner Section

Tuning Range North America (10kHz steps)

Usable Sensitivity S/N Ratio Total Harmonic Distortion IF Rejection Image Rejection Selectivity Loop Sensitivity 999 /1000 kHz 603/600 kHz 1404/1400 kHz Frequency response Audio Output

Europe (9kHz steps)

87.5MHz - 108.5MHz 13 dBμ

72 dB 66 dB ±1.0 dB

33 dB 42 dB 32 dB 3 dB 65 dB 85 dB 78 dB 60 dB

530kHz - 1710Mhz 531kHz - 1602Mhz 30dBμ 38dB 3% 36dB 28dB 17dB

66dB 66dB 66dB ±6 DB 130 mV ±20mV

VALUE

Compared with other tuners of similar performance and capability the M4 stands apart for its superb style, build quality and affordable price.

DAB Tuner Section - Band III

Tuning Range Maximum input signal Usable Sensitivity Far-off Selectivity Adjacent Channel rejection Total Harmonic Distortion S/N Ratio Frequency Response Sampling Frequency

DAB Tuner Section - Band L

Tuning Range Maximum input signal Usable Sensitivity Far-off Selectivity Adjacent Channel rejection Total Harmonic Distortion S/N Ratio Frequency Response Sampling Frequency

Physical Speciﬁcations

Net Dimensions (W x H x D)

Gross Dimensions*

Net Weight Shipping Weight

*includes volume knob, speaker terminals, connectors

& feet. Note: Installers should allow a minimum clear-

ance of 4 inches for wire management.

174MHz – 240MHz

-10 dBm

-100dBm typical 40dB 40dB

0.01% 100dB ±0.3dB 48kHz

1452 - 1492MHz

-16 dBm

-97dBm typical 40dB 40dB

0.01% 100dB

0.3dB 48kHz

17 1/8 x 3 7/8 x 11 4/5” (435 x 100 x 300mm) 17 1/8 x 4 1/2 x 12 1/4” (435 x 115 x 312mm)

19.75 lbs (8.97kg)

31.5 lbs (14.3kg)

NAD Electronics International reserves the right to change specications or features without notice as design improvements are incorporated. NAD is a registered trademark of NAD Electronics International. All rights reserved. No part of this publication may be reproduced, stored or transmitted in any form whatsoever without written permission of NAD Electronics. International. Printed in Canada 12/07. www.NADelectronics.com