Meridian Audio 808.2I manual Signal Processing, Integrated preamplifier, System integration

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Introduction

The 808.2 Signature Reference CD Player

 

The 808.2 Signature Reference CD Player takes Compact Disc playback to an entirely new level, with a heritage that includes the multiple award winning 508 and 800, and two dozen optical disc players from 1984 to the present day. The 808.2 is specifically designed as a CD-optimised machine, able to play audio CDs, CD-Rs, and CD-R/Ws. It also plays the CD layer of an SACD disc.

At the heart of the 808.2 are fully-integrated electronics and a computer-style CD/DVD-ROM drive. The drive normally operates at standard CD speed, but is capable of much faster reading, using multiple high-speed re‑reads to ensure accurate recovery of data from even the most difficult disc. This capability alone provides over ten times the error correction of a conventional CD player.

Signal Processing

Once the digital data stream has been recovered from the disc, powerful on-board digital signal processing (DSP) with a capability of an impressive 150 MIPs upsamples the digital information from the 16-bit 44.1kHz signal of conventional CD to a 24-bit signal with a sample rate of 176.4kHz. This signal is fed

to the latest DVD-Audio quality delta-sigma DACs to drive the analogue outputs, while a digital signal at an 88.2kHz sample rate is supplied to the digital outputs. Upsampling is performed with very high-accuracy filters which minimise pre-echo arising from ADCs and DACs used in the recording and replay process so that the total chain closely represents transmission of sound through air, for ultimate transparency from a CD source.

The 808.2 employs a triple buffering system to minimise jitter, and therefore maximise HF transparency and stereo image precision and stability. This, and

the digital electronics as a whole, are driven by a new design of high-stability clocking system which further reduces jitter and ensure that the highest level of detail

is recovered from a disc. All digital data is accurately re-clocked.

Multiple power supplies ensure that digital and analogue circuitry are kept apart and can provide the required power when called upon to do so.

Integrated preamplifier

The 808.2i version of the 808.2 Signature Reference CD Player includes a built-in stereo preamplifier with the ability to handle six stereo analogue inputs, three digital coaxial S/PDIF inputs, and two Toslink optical digital inputs, making it ideal as the heart of a superb stereo system.

System integration

The 808.2 Signature Reference CD Player provides balanced and unbalanced analogue outputs for connecting to an external power amplifier or preamplifier. Alternatively, it provides SpeakerLink and coax digital outputs, allowing it to drive Meridian DSP Loudspeakers directly. The digital outputs support MHR (Meridian High Resolution) and operate at up to 2 x CD sample rate (88.2kHz), 24-bit.

Meridian Comms sockets (2 x DIN) allow communication with other Meridian components, while an RS232 interface provides full remote control capability as well as the ability to configure the unit with Meridian’s innovative Windows-based graphic configuration application. Three programmable trigger outputs are provided for direct control of external devices, for example powering-up amplifiers, etc.

The Meridian 808.2 Signature Reference CD Player is supplied with the MSR+ learning/programmable remote control, which not only operates all Meridian products but also includes an extensive database of third-party products and the capability to learn commands from existing remotes.

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Contents 808.2/808.2i Signature Reference CD Player User Guide To avoid overheating Important safety instructionsSafety warnings To avoid interferenceContents Copyright and acknowledgements Sales and service in the UKSales and service in the USA Designed and manufactured in the UKIntroduction Signal Processing Integrated preamplifierSystem integration Audio in and out SpecificationsDrive ControlsIntroduction Using the 808.2 Signature Reference CD Player Front panel keys Signature Reference CD PlayerMSR+ keys OFFTo switch to standby Switching on and offTo switch on from standby To insert a discTo restart the current track Playing a discTo play the disc To move to the next trackTo stop playback Stopping and pausing playTo continue after pausing To pause playbackRepeat To cancel A-B repeatTo cancel the repeat function To continuously repeat a discScanning a disc To scan through a disc1237 To make a selection by omitting tracks To choose a track to programmeTo make a selection by adding tracks To add or remove a track from a selection+ Phase Changing the absolute phaseTo display the phase setting To change the phase settingChanging the front-panel display To change the contrast or brightnessTo change the displayed information Using Signature Reference CD Player Using the CD player preamplifier features Selecting a source To select a sourceRadio To restore the sound Adjusting the system volumeTo change the volume To mute the soundChanging the balance To change the balanceBalance Installing the CD player Unpacking Back panelAudio outputs Audio inputs 808.2i onlyCommunications connections Applications To connect to an analogue preamplifier Type 1 orSpeakerLink lead DSP loudspeaker Slave M5 lead To connect the 808.2/808.2i to a power amplifier Type 0 or Series, 500 Series, or 800 Series unit Configuring the CD player Choosing a standard setting To select a standard settingType To turn off Gain mode Setting up sourcesTo turn on Gain mode To adjust the sensitivity of a sourceConfiguring the CD Player Index Unpacking Volume, adjusting

808.2I specifications

Meridian Audio is a renowned name in high-performance audio equipment, and the Meridian 808.2i is a prime example of the brand's commitment to audio excellence. This state-of-the-art CD player and digital source component is engineered for audiophiles who demand unparalleled sound quality and advanced digital technologies.

The Meridian 808.2i features a high-precision CD transport that ensures accurate playback of CDs, minimizing errors and artifacts that might otherwise compromise sound quality. The player is equipped with a sophisticated digital-to-analog converter (DAC) that utilizes Meridian's proprietary technologies to deliver a rich, detailed audio experience. The DAC section is designed to handle high-resolution audio formats, making the 808.2i a versatile addition to any audiophile's collection.

One of the standout features of the 808.2i is its capability to upsample audio data. This process involves converting the original audio signal to a higher sampling rate, allowing the player to produce a more detailed and clearer sound. The 808.2i supports up to 24-bit / 192kHz audio resolution, ensuring that it can deliver the full depth and detail of high-quality recordings.

In addition to its impressive sonic performance, the Meridian 808.2i incorporates a variety of digital inputs, including USB and S/PDIF, making it compatible with a wide range of digital audio sources such as computers, streaming devices, and external digital sources. This flexibility allows users to enjoy their digital music collections with the same fidelity as high-end CD playback.

The player also features Meridian's innovative "Smart" technology, which optimizes playback based on the characteristics of the speakers and the listening environment. This technology adjusts the audio output to ensure the best possible sound quality, regardless of the setup. Furthermore, the 808.2i supports various digital audio formats, providing users with the flexibility to enjoy their favorite music in any format.

The design of the Meridian 808.2i is both elegant and functional, featuring a refined chassis that minimizes vibration and enhances sonic performance. Its user-friendly interface makes it easy to navigate between different playback options and settings, ensuring that listeners can easily access their favorite music.

In summary, the Meridian 808.2i is a high-end audio player that combines advanced technologies, exceptional build quality, and stunning sound performance. It represents the pinnacle of Meridian's commitment to delivering the ultimate listening experience for audiophiles. Whether for use as a standalone CD player or as part of a comprehensive digital audio system, the 808.2i sets a new standard in high-fidelity sound reproduction.
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