Front panel display

azur 640R

Loudspeaker connections

1Tuner mode indicators

4 5

To avoid damaging the speakers with a sudden high-level signal, be sure	ENGLISH
to switch the power off before connecting the speakers. Check the

impedance of your speakers. Speakers with an impedance of between 4 and 8 ohms (each) are recommended.

The coloured speaker terminals are positive (+) and the black speaker terminals are negative (-). Make sure correct polarity is maintained at each speaker connector or the sound can become weak and “phasey” with little bass.

Prepare the speaker cords for connection by stripping off approximately

Shows Memory/Store active, Stereo mode active, AutoScan active and RDS On.

2Tone control indicator

Lights when Bass and Treble controls are active.

3Direct indicator

Lights when the 640R is in a Direct mode - Analog Stereo Direct or 7.1 Direct.

4Frequency type

Indicates the tuned frequency in AM or FM Tuner mode.

5Decoding mode indicators

Shows the current decoding mode, Dolby Digital, Dolby Digital EX etc. In conjunction with the Output Channel indicators these give full details of the current processing mode.

6Main information display

Shows the current source selected, also the surround mode and station name/frequency when in tuner mode etc.

7Balance indicator

Lights when the Front Left and Right speaker outputs have been set to different levels in the OSD, i.e. a balance adjustment has been made.

8Digital/Analog indicators

Indicates the current source input type - digital or analog.

9Output channel indicators

Shows the currently active channels depending on decoding mode and source material. Icons lit indicate active channels in the source material. Icons with a box around them indicate actual channels being output separately.

Display examples

- Indicates a 5.1 Dolby Digital source being played back as 5.0 (Sub off). LFE indicates a low frequency effects channel is present in the source material. When this icon isn’t boxed it indicates the LFE channel is not being reproduced separately.

- Indicates a 7.1 playback of DTS ES material.

- Indicates a 2.1 output created in the digital domain from analog input material.

10mm (3/8”) or less (no more than 10mm, as this could cause a short- circuit) of the outer insulation. Twist the wire tightly together so there are no loose ends. Unscrew the speaker terminal knob, insert the speaker cable, tighten the knob and secure the cable.

Note: All connections are made via loudspeaker cable, except if using an active subwoofer which would be connected via a standard RCA phono cable. Banana Plugs (4mm standard) connected to the speaker cable are recommended for direct insertion into the speaker terminals.

Please refer to the ‘Speaker Configuration’ section of this manual for more information on 5.1, 6.1 and 7.1 speaker setups.

Powered subwoofer

Centre speaker

Phono/RCA cable

Receiver

Max Power Consumption: 1400W

TV/Mon Out

DVD

Video 1

Recorder 1

7.1 Direct In

7.1 Preamp Out

Power Rating: 230V AC

50Hz

Designed in London, England

Manufactured in an

Cb/Pb

ISO9002 approved facility

w.cambridge-audio.com

Component

complies with

rules

Cr/Pr

SBL/SB

SBR

SBL/SB

SBR

Control

Bus

Power

Video 2

Multi-Room

Off

	PSU 24V DC In	Keypad 1	Keypad 2				In	In
	approved						In	In
	Use							Power AC
	PSU only							Power AC
		International Patent Pending LeisureTech Electronics Pty Ltd IR1		IR2	IR3	1 Video Out	2	Out
			Speaker Impedance 4-8 Ohms				Emitter
			Speaker Impedance 4-8 Ohms
	Surround	Surround		Surround		Surround	Front	Front
	Back Right	Back Left/	Centre	Right		Left	Right	Left
	Back Right	Surround Back		Right		Left	Right	Left
		Surround Back
tric shock. Do not open. Do not obstruct ventilation.
ectrique. Ne pas ouvrir. Ne pas obstruer la ventilation.								Serial No. label fitted on underside
gërates. Netzstecker ziehen. Ventilation nicht verschließen.	7.1	6.1				5.1		Serial No. label fitted on underside
	7.1	6.1				5.1

Surround back	Surround	Front
speakers	speakers	speakers

640Razur specifications

The Cambridge Audio 640R is a high-fidelity AV receiver that has gained recognition for its remarkable performance and sophisticated features. Engineered to deliver a premium audio experience, this receiver excels in both music and home theater applications.

One of the standout features of the 640R is its ability to handle a wide range of audio formats. With support for advanced surround sound formats such as Dolby TrueHD and DTS-HD Master Audio, the receiver is capable of producing high-definition audio that enhances the clarity and detail of films and music. The 640R also supports standard formats like Dolby Digital and DTS, making it highly versatile.

At the heart of the 640R is Cambridge Audio's proprietary components, including high-quality capacitors and resistors, designed to minimize noise and distortion. This ensures that the audio output remains clean and transparent, providing a true representation of the source material. The receiver offers a robust power output, ensuring effortless dynamic range and delivering impactful sound, whether it's a subtle dialogue or explosive action scenes.

Another key feature of the Cambridge Audio 640R is its extensive connectivity options. It boasts multiple HDMI inputs, allowing users to connect various devices such as Blu-ray players, gaming consoles, and streaming devices. Additionally, the receiver supports HDMI video scaling, enabling the upscaling of standard definition signals to 1080p, which enhances the viewing experience on high-definition screens.

The 640R also includes multiple analog and digital inputs, ensuring compatibility with legacy devices alongside modern technology. A dedicated preamp output allows for the addition of external amplifiers, enhancing the system's scalability for audiophiles looking to create a bespoke setup.

Moreover, the Cambridge Audio 640R features an intuitive user interface and remote control, making it user-friendly even for those new to home audio systems. The on-screen display simplifies the selection of sources and adjustment of settings, while the advanced configuration options allow for precise customizations.

In summary, the Cambridge Audio 640R stands out as an exceptional AV receiver, combining audiophile-grade components with modern features. With its powerful performance, advanced surround sound capabilities, and extensive connectivity, it caters to both music lovers and home theater enthusiasts, making it a compelling choice for anyone looking to enhance their audio experience.