Meridian Audio 565 manual Audio problems, Hum on analogue input, Poor sound quality

Page 59

Audio problems

Hum on analogue input

There is no reason for the 565 to produce hum on the analogue input.

❍Check the source equipment. Disconnect each source in turn.

❍If the hum originates from a ground loop an antenna or cable supply may be the cause, in which case an antenna-lead isolator should be fitted.

❍If the 565 seems to be the cause of hum consult your dealer.

Poor sound quality

Poor sound quality will usually result from driving an analogue input too hard.

❍Turn down the analogue input level.

❍To optimise this use the ADC Check procedure; see ADC Check, page 43.

There is radio interference

The 565 is a digital audio and computing device which has been designed to very high standards of electromagnetic compatibility.

If this equipment does cause or suffer from interference to/from radio or television reception then the following measures should be tried:

❍Reorient the receiving aerial (or antenna) or route the antenna cable of the receiver as far as possible from the 565 and its cabling.

❍Ensure that the receiver uses well-screened antenna cable.

❍Relocate the receiver with respect to the 565.

❍Connect the receiver and this product to different AC outlets.

❍If the problem persists contact you dealer.

Troubleshooting

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Contents Meridian 565 Digital Surround Processor Manufactured in the UK by PrefaceContents Calibrating the system Setting up sourcesTroubleshooting Introduction IntroductionThree-channel surround system Layout G or L, No Surrounds Planning a systemIntroduction Introduction Surround system with full-range speakers Layout L Using the 565 with Meridian DSP LoudspeakersPlanning sources Using an analogue preamplifierUsing a Digital Control Unit Using a LaserDisc playerSetting up the digital surround processor Radio interference Setting up the digital surround processorUnpacking To position the digital surround processorVideo connections Connecting the digital surround processorSetting Rear panelAudio outputs Audio inputsRS232 connection Communications connectionsOn-screen display Connecting videoSetting up the digital surround To connect to Meridian Active Loudspeakers Connecting speakersTo connect to Meridian DSP Loudspeakers eg DSP5000 Subwoofer To connect to a 519 Demodulator Connecting sourcesTo use the digital surround processor as a preamplifier To connect to a 562 or 562V Digital Control Unit Surr Analogue Tape OUT A4 in Audio Inputs Digital Optical To connect to other Meridian 500 Series equipment Connecting to other Meridian equipmentConfiguring the digital surround processor Processor Choosing standard settingsTo select a standard setting Standard settings Specifying the speaker layout How to use the table of speaker layoutsConfiguring the digital surround processor Small main speakers Speaker layouts Digital surround To set the speaker layoutTo define the shape of the speaker layout Configuring the digital surround processor To select a 5.1 LFE subwoofer To set other configuration optionsTo time-align the system Setting up the speaker outputsDigital To set up a speaker outputTo change the settings for a speaker To select the output typeTo set the output delay Digital surround processor To set up speaker protection for 5.1 sourcesTo specify the output precision To specify the type of subwoofer Calibrating the system Calibrating the systemUsing a Sound Pressure Level meter Using the calibration procedureTo move between the calibration tests To start the calibration procedureTo exit from the calibration procedure Levels Calibration testsMain Centre Phase Front-Rear Surround Sides Subwoofers LRS Other subwoofersSystem ADC CheckWhat next? To test for room vibrations Test signalsTo select a different test signal Setting up sources Setting up sourcesDTS THX Mpeg THX Standard source settingsTo change an option To configure a sourceOption Initial value Alternative values Explanation MPEG, Mpeg THX To change a source label Examples of configuring the sourcesTo use a source key to change DSP preset To set up a system with two Meridian CD players Setting up sources Troubleshooting TroubleshootingCommunications not working with other Meridian products General operating problemsStandby point not lit Remote not workingThere is radio interference Audio problemsHum on analogue input Poor sound qualityCrackling on optical inputs Audible hiss at high volume settingsCentre not working There is a hiss when starting DTS LaserDiscsSound not clear TV does not work using Poor picture quality Video problemsIndex IndexLayouts Optical Types
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565 specifications

The Meridian Audio 565 is a landmark in the realm of high-fidelity audio processing. Launched as a digital surround sound processor, it has captivated audiophiles and home theater enthusiasts with its innovative technology and exceptional sound quality. The 565 serves as a definitive solution for those looking to enhance their audio experience, boasting a range of features that solidify its status in the industry.

One of the main features of the 565 is its advanced digital signal processing capabilities. It utilizes Meridian’s proprietary Apodizing filter technology, which significantly improves frequency response and effectively reduces time-domain distortion. This technology enables precise sound reproduction, allowing listeners to experience their favorite music and movies as intended by the creators.

The Meridian 565 is equipped with multiple inputs and outputs, supporting various audio formats. It features both balanced and unbalanced audio connections, ensuring compatibility with a wide range of audio equipment. This flexibility allows users to seamlessly integrate the 565 into their existing audio systems, whether they are aiming for stereo or surround sound configurations. The device supports multi-channel audio formats, giving users the opportunity to experience immersive soundscapes.

Another noteworthy characteristic of the 565 is its user-friendly interface. It comes with a well-organized remote control and an intuitive on-screen display that simplify the process of configuring and operating the device. Users can easily adjust settings, switch between different input sources, or fine-tune audio parameters to suit their personal preferences.

The build quality of the Meridian 565 is also commendable. Typically housed in a robust chassis, the device is designed to minimize interference from external electromagnetic sources, thus preserving audio integrity. This attention to detail in construction reiterates Meridian’s commitment to delivering high-performance audio solutions.

In conclusion, the Meridian Audio 565 is an exceptional digital surround sound processor that combines advanced technology with user-friendly features. Its unique technologies, such as Apodizing filtering, flexible connectivity options, and robust build quality, make it a top choice for audiophiles and home theater enthusiasts alike. Whether for casual listening or an immersive cinematic experience, the 565 stands as a testament to Meridian's dedication to excellence in audio engineering.
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