About HDMI

Designed to meet the increased demands of digital TV, HDMI (High Definition Multimedia Interface) is a new digital interface standard for connecting TVs, projectors, Blu-ray Disc/DVD players, set-top boxes, and other video compo- nents. Until now, several separate video and audio cables have been required to connect AV components. With HDMI, a single cable can carry control signals, digital video, and up to eight channels of digital audio (2-channel PCM, multichan- nel digital audio, and multichannel PCM).

The HDMI video stream (i.e., video signal) is compatible with DVI (Digital Visual Interface)*1, so TVs and displays with a DVI input can be connected by using an HDMI-to-DVI adapter cable. (This may not work with some TVs and displays, resulting in no picture.)

The AV receiver uses HDCP (High-bandwidth Digital Content Protection)*2, so only HDCP-compatible components can display the picture.

The AV receiver’s HDMI interface is based on the following:

Audio Return Channel, 3D, x.v.Color, Deep Color, Lip Sync, DTS-HD Master Audio, DTS-HD High Resolution Audio, Dolby TrueHD, Dolby Digital Plus, DSD and Multichannel PCM

Supported Audio Formats

2-channel linear PCM (32–192 kHz, 16/20/24 bit)

Multichannel linear PCM (up to 7.1 ch, 32–192 kHz, 16/20/24 bit)

Bitstream (DSD, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD High Resolution Audio, DTS-HD Master Audio)

Your Blu-ray Disc/DVD player must also support HDMI output of the above audio formats.

About Copyright Protection

The AV receiver supports HDCP (High-bandwidth Digital Content Protection)*2, a copy-protection system for digital video signals. Other devices connected to the AV receiver via HDMI must also support HDCP.

*1 DVI (Digital Visual Interface): The digital display interface standard set by the DDWG*3 in 1999.

*2 HDCP (High-bandwidth Digital Content Protection): The video encryption technology developed by Intel for HDMI/DVI. It’s designed to protect video content and requires a HDCP-compatible device to display the encrypted video.

*3 DDWG (Digital Display Working Group): Lead by Intel, Compaq, Fujitsu, Hewlett Packard, IBM, NEC, and Silicon Image, this open industry group’s objective is to address the industry’s requirements for a digital connectivity specification for high-performance PCs and digital displays.

Note

The HDMI video stream is compatible with DVI (Digital Visual Interface), so TVs and displays with a DVI input can be connected by using an HDMI-to-DVI adapter cable. (Note that DVI connections only carry video, so you’ll need to make a separate connection for audio.) However, reliable operation with such an adapter is not guaranteed. In addition, video signals from a PC are not supported.

The HDMI audio signal (sampling rate, bit length, etc.) may be restricted by the connected source component. If the picture is poor or there’s no sound from a component connected via HDMI, check its setup. Refer to the connected component’s instruction manual for details.

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Onkyo SR308 instruction manual About Hdmi, Supported Audio Formats, About Copyright Protection

SR308 specifications

The Onkyo SR308 is a versatile and powerful 5.1-channel home theater receiver designed to elevate your audio experience. Engineered with a robust set of features, it plays a significant role in delivering high-quality sound reproduction and accommodating modern entertainment systems.

One of the main features of the Onkyo SR308 is its capability to output 100 watts per channel, ensuring dynamic and impactful sound for movies and music. This power output allows the receiver to drive speakers efficiently, delivering clear dialogues and rich music without distortion, even at higher volumes.

The SR308 supports multiple audio formats, including Dolby TrueHD and DTS-HD Master Audio, which brings a cinematic feel to home entertainment. The built-in decoding for these high-definition formats enhances the listening experience, making it possible to enjoy every nuance of the soundtracks in your favorite films.

Connectivity is another strong point of the Onkyo SR308. It offers four HDMI inputs, which allow for multiple high-definition devices to be connected simultaneously. This feature is particularly beneficial for users with a variety of devices such as Blu-ray players, gaming consoles, and streaming devices. The HDMI output supports 3D video pass-through and can handle 4K resolution, ensuring the receiver is future-proof for upcoming technologies.

In addition to HDMI connectivity, the SR308 includes traditional audio inputs such as optical and coaxial digital inputs, as well as analogue stereo inputs. This variety ensures compatibility with a wide range of audio sources, whether they be older devices or the latest offerings.

Onkyo’s proprietary technologies, such as Audyssey Dynamic EQ and Audyssey Dynamic Volume, are integrated into the SR308 to enhance social listening levels. Audyssey Dynamic EQ optimizes sound based on the volume level, maintaining clarity and detail without overwhelming distortion. Meanwhile, Audyssey Dynamic Volume intelligently adjusts audio levels during playback, preventing sudden loud spikes while preserving the overall dynamic range.

The receiver also has an intuitive on-screen setup guide, making it easier for users to configure their home theater setup without much hassle. This user-friendly design extends to the remote control, which provides quick access to a range of functions, including sound field processing and input selection.

With its blend of power, connectivity, and advanced audio technologies, the Onkyo SR308 represents an excellent choice for those looking to enhance their home theater audio experience, catering to both casual viewers and audiophiles alike.