Front panel controls

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1Standby/On

Switches the unit between Standby mode (indicated by dim power LED) and On (indicated by bright power LED). Standby is a low power mode. The unit may be left in Standby mode when not in use.

2Phones

Allows for the connection of stereo headphones with a 6.35mm/¼" Jack plug. Headphones with an impedance of between 32 and 600 ohms are recommended.

Note: Plugging in headphones will automatically mute the main and pre-amp outputs and select a 2-channel stereo down-mix to be created for headphone use.

3Tuning +/-

Used to tune FM frequencies and skip presets in Tuner mode.

4Mode/Store

Press to cycle between Tuner modes and for storing presets (refer to the ‘Operating Instructions’ of this manual for more information).

5Tuner FM/AM

Press to select the tuner for output through the 650R. Once in Tuner mode also use this button to switch between FM and AM modes.

6Display

Displays the status of the unit. The IR receiver is also mounted behind this window. A clear unobstructed line of sight between the remote control and the sensor is required.

7BD/DVD

Press to select the source equipment connected to the BD/DVD input.

8Video 1

Press to select the source equipment connected to the Video 1 input.

9Video 2

Press to select the source equipment connected to the Video 2 input.

10Recorder 1

Press to select the recording device connected to the Recorder 1 input.

11Aux

Press to select the source equipment connected to the Aux input.

12CD

Press to select the source equipment connected to the CD input.

13Recorder 2

Press to select the recording device connected to the Recorder 2 input.

147.1 Direct

Press to select a 7.1, 6.1 or 5.1 source (DVD-A or SACD player etc) connected to the 7.1 Direct In sockets.

Note: The 650R remembers the audio and video input type and processing mode for each individual source input. These are recalled each time a source is selected.

15Audio input type

Press this button to select between analogue, digital (optical/coaxial) or HDMI input types as the source of the audio for the currently selected source input.

The choices available depend on the connections that source support on the rear panel and whether a HDMI input has been assigned to that source.

16Stereo modes

Press to listen to a source in either digitally processed stereo or stereo and sub modes.

17Pro Logic/Neo/DSP surround modes

Press to select between various Pro Logic II/IIx, DTS Neo:6 effects for matrix encoded analogue or digital material or for post-processing DD/DTS material (Note: The 650R is unable to auto-detect this kind of source material as it does not include embedded encoding type flags so manual selection is required). Also selects various DSP created surround sound modes for uncoded stereo sources.

18Dolby Digital/DTS surround modes

Press to select Dolby Digital or DTS surround modes (with suitably encoded digital source material). These modes can only be decoded from digital audio sources (via Coaxial, Optical or HDMI inputs).

19Video input type

Press to select the video input type (Composite, S-Video, Component Video or HDMI) you wish to use as the source of video for the current source input.

Note: The choices available depend on the connections that source supports on the rear panel and whether a HDMI input has been assigned to that source. The 650R cannot simultaneously receive HDMI audio and analogue video from the same source.

For any HDMI audio sources selecting analogue video will then cause the unit to switch to analogue audio as well. Digital audio via SPDIF/Toslink can then also be selected via the Audio Input Type button but not HDMI audio. Returning to HDMI video will allow selection of HDMI audio (or analogue or digital audio) again. All normal sources with HDMI audio output will have HDMI video output.

20Analogue Stereo Direct

Press to listen directly to the analogue inputs for the current source with no analogue to digital or DSP processing for highest possible stereo sound quality.

21Volume

Use to increase/decrease the level of the sound from the outputs of the 650R.

22Mute/Display

Press to mute the sound from the main and pre-amp outputs of the 650R. Press again to cancel mute.

Note: Selecting a new source always cancels mute.

Press and hold to re-display the current decoding mode.

23Video 3 source button

Press to select a video camera recorder/video games console connected to the Video 3 input sockets.

24Video 3 input sockets

Connect a video camera recorder/video games console to the 650R. Audio/Video and digital optical inputs are provided.

Note: The L audio input is also used for the supplied auto setup microphone. Refer to the ‘Auto setup’ section of this manual for more information.

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Cambridge Audio 650R user manual Front panel controls
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650R specifications

The Cambridge Audio 650R is a high-performance AV receiver designed to deliver an immersive audio-visual experience suitable for both home theater enthusiasts and casual viewers alike. With a blend of style, functionality, and state-of-the-art technology, it stands out in the crowded market of home audio equipment.

One of the standout features of the 650R is its impressive amplification capabilities. With 7.1 channels of amplification, it can deliver a powerful output of 100 watts per channel, allowing users to enjoy crisp and dynamic sound reproduction. This capability ensures that both dialogue and action sequences are clear and impactful, making movies, music, and gaming experiences truly captivating.

The 650R incorporates advanced audio technologies, including the renowned Dolby TrueHD and DTS-HD Master Audio, providing users with a lossless audio experience that truly captures the nuances of the original recording. This ensures that content is played back in the way it was intended to be heard, enhancing the overall enjoyment of movies or music.

Another significant feature is the onboard HDMI connectivity, which supports 3D video and 4K pass-through, offering compatibility with the latest video formats. The receiver is equipped with multiple HDMI inputs, allowing easy integration with various devices such as Blu-ray players, gaming consoles, and streaming services, ensuring a seamless user experience.

Cambridge Audio also utilizes its proprietary Adaptive Gain Control technology within the 650R. This feature intelligently adjusts the audio output levels depending on the source material, providing users with a consistent listening experience across different types of media. Additionally, the 650R includes a high-quality DAC (Digital-to-Analog Converter), enhancing audio clarity, and ensuring that even the most minute details of the soundscape are brought to life.

The design of the 650R is not only aesthetically pleasing but also user-friendly. The intuitive interface and easy-to-navigate menus make setup and operation straightforward, serving both novices and audiophiles. Furthermore, the receiver is optimized for versatility, supporting various speaker configurations, including bi-wiring and bi-amping, which allows for greater customization based on individual preferences.

Overall, the Cambridge Audio 650R stands as a testament to quality engineering in the realm of home audio. Its combination of powerful amplification, advanced audio processing, versatile connectivity options, and elegant design makes it a prime choice for anyone looking to enhance their home entertainment system. Whether watching movies, listening to music, or gaming, the 650R ensures a rich and engaging experience that is hard to match.
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