Meridian Audio 565 manual Using the calibration procedure, Using a Sound Pressure Level meter

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Using the calibration procedure

Calibrating the system

We recommend that you perform the calibration procedure using the Meridian System Remote and from the listening position.

As you run the calibration procedure the name of each calibration test is shown on the front panel display, followed by the parameters adjusted in the test. The on-screen display also provides additional text explaining what to do, and these displays are reproduced in the following sections for reference. For information about setting up the on-screen display refer to Video connections, page 9.

Each calibration test uses a test signal designed to give the best results. For information about choosing an alternative test signal, or one of the 565 inputs, see To select a different test signal, page 44.

Using a Sound Pressure Level meter

Although you can perform the calibration procedure by ear, it is recommended that you perform the tests using a Sound Pressure Level meter, available fairly cheaply from Tandy/Radio Shack, or your Meridian dealer may be able to lend you one.

Set the Sound Pressure Level meter to C weighted, and slow. Take readings with the meter at the listening position, pointing vertical. You should hold the meter with an outstretched arm to minimise reflections from your body.

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Contents Meridian 565 Digital Surround Processor Preface Manufactured in the UK byContents Calibrating the system Setting up sourcesTroubleshooting Introduction IntroductionPlanning a system Three-channel surround system Layout G or L, No SurroundsIntroduction Introduction Using the 565 with Meridian DSP Loudspeakers Surround system with full-range speakers Layout LUsing a LaserDisc player Using an analogue preamplifierUsing a Digital Control Unit Planning sourcesSetting up the digital surround processor To position the digital surround processor Setting up the digital surround processorUnpacking Radio interferenceRear panel Connecting the digital surround processorSetting Video connectionsAudio inputs Audio outputsCommunications connections RS232 connectionOn-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 Connecting to other Meridian equipment To connect to other Meridian 500 Series 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 set other configuration options To select a 5.1 LFE subwooferSetting up the speaker outputs To time-align the systemTo select the output type To set up a speaker outputTo change the settings for a speaker DigitalTo 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 the calibration procedure Using a Sound Pressure Level meterTo move between the calibration tests To start the calibration procedureTo exit from the calibration procedure Calibration tests LevelsMain Centre Phase Front-Rear Surround Sides Subwoofers Other subwoofers LRSSystem ADC CheckWhat next? To test for room vibrations Test signalsTo select a different test signal Setting up sources Setting up sourcesStandard source settings DTS THX Mpeg THXTo configure a source To change an optionOption 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 TroubleshootingRemote not working General operating problemsStandby point not lit Communications not working with other Meridian productsPoor sound quality Audio problemsHum on analogue input There is radio interferenceAudible hiss at high volume settings Crackling on optical inputsCentre not working There is a hiss when starting DTS LaserDiscsSound not clear Video problems TV does not work using Poor picture qualityIndex 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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