Custom Installation C.I. USE | Cambridge Audio 840C specs

CUSTOM INSTALLATION (C.I.) USE

The 840C	features a	Control Bus	RS232C IR Emitter	Control Bus
input/output	that allow	un-modulated
			In	In	Out
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 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. An RS232 port is also featured which allows the 840C to be controlled by C.I. systems.

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 and RS232 protocol 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.

18Azur upsampling compact disc player

840C specifications

The Cambridge Audio 840C is a high-performance CD player and digital-to-analog converter (DAC) that has garnered attention from audiophiles and music lovers since its release. This player stands out for its blend of cutting-edge technology and elegant design, making it a sought-after component in many high-end audio systems.

One of the standout features of the 840C is its ability to handle a variety of digital sources. It includes inputs for USB, coaxial, and optical connections, allowing users to easily integrate it with their digital audio devices. This versatility ensures that the 840C can serve as a central hub for a modern audio setup, including direct connections to computers, tablets, and other digital sources.

At the heart of the 840C is Cambridge Audio's proprietary "ATF" (Adaptive Time Filtering) technology. This innovation upscales lower-resolution digital audio to 24-bit/192kHz, enhancing the overall sound quality and allowing listeners to experience their music in greater depth and detail. This technology, combined with a highly regarded Wolfson DAC, ensures that the 840C delivers exceptional audio performance that captures the nuance and dynamics of any musical genre.

The 840C also boasts a precision clocking system, which minimizes jitter – a common issue in digital audio that can compromise sound quality. By ensuring more accurate timing of the audio signal, the 840C creates a more coherent soundstage and improves the overall listening experience.

Another notable aspect of the 840C's design is its robust construction. Built with high-quality components and a solid chassis, this player not only minimizes internal vibration but also ensures durability. The aesthetically pleasing brushed aluminum finish adds to its appeal, allowing it to fit seamlessly into a variety of audio setups.

Audio enthusiasts will appreciate the 840C's user-friendly interface, which makes navigation through tracks, playlists, and settings straightforward. The remote control further enhances usability, offering quick access to essential functions.

In summary, the Cambridge Audio 840C is an exemplary piece of audio equipment that combines advanced technology with high-quality sound reproduction. Its versatile outputs, state-of-the-art DAC capabilities, robust design, and user-friendly operation make it an ideal choice for anyone looking to elevate their audio experience. Whether enjoying CDs or streaming high-resolution digital files, the 840C promises to satisfy even the most discerning listeners.