Custom installation (C.I.) use

The 740C features a Control Bus input/output that IR Emitter

Control Bus

allow un-modulated remote control commands

 

 

 

(positive logic, TTL level) to be received electrically

 

 

 

by the unit and looped to another unit if desired.

 

 

 

These control commands are typically generated

In

In

Out

by custom installation (multi-room) systems or

remote IR receiver systems. The Control Bus sockets are colour-coded orange.

An IR Emitter Input is also provided that allows modulated IR remote control commands to be received electrically by the unit. Commands on this input operate the unit only and are not looped out demodulated on the Control Bus Output. This feature is useful for multi-room systems (such as the Cambridge Audio Incognito multi-room system) which feature routed I.R. emitter outputs. Instead of using window emitters stuck over the CD players front panel IR receiver, a mono 3.5mm mini- jack to 3.5mm mini-jack lead can be used for a more reliable electrical connection.

In addition the units feature 'direct' IR/Control codes as well as toggle codes for some of their features to simplify programming custom installation systems. Special direct On/Off and Mute commands can be accessed on the supplied remote control for teaching into C.I. systems as follows:

1.Press and hold the Standby button. The remote first generates it's standby (toggle) command. Keep the button held down, after 12 seconds a CD player “On” command will be generated. If the button is kept held down for a further 12 seconds, a CD player “Off” command is generated.

A full code table for this product is available on the Cambridge Audio website at www.cambridge-audio.com.

Troubleshooting

There is no power

Ensure the AC power cord is connected securely.

Ensure the plug is fully inserted into the wall socket and is switched on.

Check fuse in the mains plug or adaptor.

The player will not read the disc

Check the disc is not loaded upside down.

Check that the disc is not too scratched or dirty.

There is no sound

Ensure that the amplifier is set correctly.

Check that the interconnects are inserted correctly.

The disc is skipping

Check that the disc is not too scratched or dirty.

Ensure the player is on a firm surface and not subject to vibrations.

There is a hum coming from the speaker

Ensure that all cable connections are secure.

The remote handset will not function

Check that the batteries have not expired.

Ensure that nothing is blocking the remote sensor.

 

azur

740C

Technical specifications

 

D/A converters

Dual Wolfson

 

 

WM8740 24 bit DACs

 

Digital filter

Analog Devices Black Fin

 

 

ADSP-BF532 32 bit DSP

 

 

Performing ATFTM

 

 

upsampling to 24 bit 384kHz

Analog filter

2 Pole Dual Differential Bessel

 

Double Virtual Earth Balanced

Frequency response

20Hz to 20kHz (+/-0.1dB)

 

THD @ 1kHz 0dBFs

< 0.0008%

 

THD @ 1kHz -10dBFs

< 0.0005%

 

THD @ 20kHz 0dBFs

< 0.001%

 

IMD (19/20kHz) 0dBFs

< 0.0006%

 

Linearity @ -90dBFs

+/- 0.5dB

 

Stopband rejection (>24kHz)

> 115dB

 

S/N ratio, A weighted

> 113dB

 

Total correlated jitter

< 130pS

 

Crosstalk @1kHz

< -130dB

 

Crosstalk @20kHz

< -110dB

 

Output impedance

< 50 ohms

 

Digital input word widths supported

 

 

16 - 24 bit

 

Digital output word widths supported

 

 

16, 20, 24 bit

 

Digital input sampling frequencies supported

 

 

32kHz, 44.1kHz, 48kHz, 88.2kHz,

 

96kHz, 176.4kHz, 192kHz

 

Digital output sampling frequencies supported

 

 

32kHz - 192kHz pass through

 

(Including 44.1kHz for CD)

 

 

48kHz, 96kHz, 192kHz upsampled

Audio output upsampling

Fixed 24 bit, 384kHz

 

Dimensions - H x W x D

115 x 430 x 315mm

 

 

(4.5 x 16.9 x 12.4”)

 

Weight

6.4Kg (14.1Lbs)

 

ENGLISH

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Cambridge Audio 740C user manual Custom installation C.I. use, Troubleshooting, Technical specifications

740C specifications

The Cambridge Audio Azur 740C is a high-performance CD player that exemplifies the brand's commitment to exceptional audio quality and engineering excellence. Designed to provide an immersive listening experience, the 740C incorporates advanced technologies and thoughtful features that cater to audiophiles and casual listeners alike.

At the heart of the 740C's design is its sophisticated audio processing capabilities. The player employs a high-quality Wolfson WM8740 DAC (Digital-to-Analog Converter) that ensures precise signal conversion, resulting in a rich and detailed sound reproduction. With a 24-bit processing capability, the 740C can handle a wide dynamic range, allowing for the clear depiction of even the most subtle nuances in music.

One of the standout features of the 740C is its unique upsampling capability. This feature allows users to enhance the sound quality of standard CDs by converting the audio signal to 24-bit/192kHz, effectively improving the overall listening experience. The player also includes a range of digital filters, enabling users to tailor the sound signature to their personal preferences. This flexibility in sound customization is a significant advantage for discerning listeners who appreciate a personalized audio experience.

In addition to its impressive playback capabilities, the Cambridge Audio 740C offers versatile connectivity options. It features both coaxial and optical digital outputs, allowing it to be integrated into various audio systems seamlessly. The player is also equipped with an asynchronous USB input, enabling it to function as a high-quality DAC for digital audio sources, providing a comprehensive solution for all types of listening setups.

To enhance user convenience, the 740C includes a well-structured remote control, giving users easy access to all of its features from a distance. The intuitive front panel is designed with a clear display, making it easy to navigate through tracks and settings.

The elegant design of the Cambridge Audio 740C complements its performance, featuring a robust build quality that minimizes resonance and enhances durability. Available in a sleek black or silver finish, it can easily blend with any audio system decor.

In summary, the Cambridge Audio 740C CD player offers a unique combination of state-of-the-art technology and outstanding audio performance. With features like high-quality DACs, upsampling capabilities, and versatile connectivity, it stands as a top choice for anyone seeking to elevate their music listening experience. Whether you are playing your favorite CDs or utilizing its advanced digital input features, the 740C consistently delivers sound quality that impresses.