Meridian Audio G68 manual Introduction, Using a Sound Pressure Level meter

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C a l i b r a t i n g t h e s y s t e m

Calibrating the system

To help you to set up the installation to give the best possible sound with any particular

combination of associated equipment, the G68 Digital Surround Controller includes a built-in

calibration procedure.

This calibration procedure uses test signals to present a series of sounds, which you use to

adjust certain aspects of the system to their optimum settings.

You should use the calibration procedure the first time you set up the system, and whenever

you want to check the calibration, such as after changing the layout of the room.

Introduction

We recommend that you perform the calibration procedure using the MSR+ 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.

Each calibration test uses a test signal designed to give the best results.

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. These are 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 vertically. You should hold the meter with an outstretched arm to minimise reflections from your body.

You can choose to display and enter distances in either feet and inches or metres.

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Contents G68 Digital Surround Controller Installation Guide To avoid interference Safety warningsRefer all servicing to approved service personnel To avoid overheatingContents Tel +1 404 344 Fax +1 404 346 Part no GSC/1 Sales and service in the UKSales and service in the USA Copyright and acknowledgementsUnbalanced Digital Yes Digital surround controller modelsProduct Analogue outputs Digital outputs G68D Unbalanced DigitalFormats supported Video switchingSmart Source feature G68 Digital Surround ControllerMeridian Room Correction Multi-zone capabilitiesIntegral tuner Specifications If any of these items are missing please contact your dealer UnpackingUse this connector Audio inputsTo connect to this To connect to a digital source eg G07 24-bit CD Player G07 24-bit CD PlayerTo connect to an analogue source eg TV tuner G98DH DVD Audio Transport SACD/DVD-A player Analogue outputs Audio outputsDigital version G68D Digital outputs Zone 2 and 3 audio outputsDigital outputs Zone 2 and 3 audio outputs Analogue outputs Digital and analogue version G68ADVAnalogue version G68AXV Zone 2 and 3 audio outputs Unbalanced analogue outputsBalanced analogue outputs Zone 2 and 3 audio outputs Balanced analogue outputs Balanced analogue version G68XXVTo connect the G68D or G68ADV to Meridian DSP loudspeakers DSP5000CPatch box M33 G68ADV/AXV Digital Surround ControllerTo connect an active subwoofer eg Meridian M1500 or M2500 Subwoofer G68 Digital Surround ControllerVideo inputs Component outputs Video connectionsMain composite outputs Zone 2 & 3 video outputs Video outputsUse this input To connect to this Video outputsUse this output To connect to this Video inputsTelevision/monitor VCR To control a second room To record audio and videoUse this connection To connect to this Tuner and communications connectionsAuto To connect FM and AM antennae UK use a female Belling-Lee VCR connectorConfiguration Wizard Type Reset settingsReset all settings? To reset the configurationType Speakers Music Sub Logic Sub TypesTo change an option To configure the speakersSelect speakers OneOption Values Description Speaker optionsRadio Use Configure sourcesTo configure a source Press Source When you have finished configuring sourcesOption Values Source optionsTo change a setting Stage 4 Configuring other settingsOther settings To configure other settingsTuner region Fan is Distance measurement SettingsFollowing table summarises the product settings OptionPage Introduction Using a Sound Pressure Level meterLeft Level +0.0dB To start the calibration procedureTo exit from the calibration procedure To complete the calibration procedureCalibration tests LevelsDistance Left Distance Fine tuningLeft Phase Setting What it sounds likeLeft Size 5/28 Speaker sizeUsing the Sine/Sub/Sens controls Subwoofer crossover frequencySinewave sweep test 78.5Hz 88.5Hz81.5Hz Pause 80.0HzTV 2.0V Clip Setting up sourcesTo adjust the sensitivity of a source TV 1.4V PeakDSP presets Speaker layoutsLayout Description Parameter Range Default Standard parametersWhat it changes Parameter Options What it changes Music and Trifield DSP preset parametersMusic TrifieldAmbisonics and Super DSP preset parameters AmbisonicsSuper PLIIx Music MusicLogic DSP preset parameters Parameter OptionsPLIIx Music DSP preset parameters What it changes MusicLogicSurrounds Stereo and DirectDirect PLIIx Movie and PLIIx THXParameter Options Mono DSP preset parametersTV Logic MonoDiscrete and Cinema DSP preset parameters CinemaDiscrete 28dB to 0dB THXUsing dynamic range control To save the preset settings Defining your own presetsTo clear a user-defined preset StoredFor example, you could change the name to General operating problems Standby light not litErratic or unexpected system behaviour Hum on analogue input Audio problemsRemote not working Unit is overheatingCentre not working Audible hiss at high volume settingsThere is a hiss when starting DTS LaserDiscs or CDs Sound not clearRadio tuner problems Video problemsTo clean the audio and video connections MaintenanceCleaning To clean the case, display panel, and keypadService and guarantee ServiceGuarantee Academy DSP parameter 49 accessories Calibration procedure 35 moving between tests 36 startingCentre DSP parameter 44 Cinema DSP parameters DSP presets Depth THX Surround EXTHX Music Phase THX Ultra2 Cinema Trifield Rear Dynamic range controlD e Clearing 54 editing name Filter DSP parameter 45, 46 THX DSP preset 50D e D e

G68, G68 specifications

Meridian America G68 is a cutting-edge audio processing and distribution system that represents the pinnacle of home entertainment technology. With a focus on high-fidelity audio performance, the G68 is designed to deliver an immersive listening experience that caters to audiophiles and casual listeners alike. This device is an essential component for anyone looking to create a sophisticated and dynamic home theater setup.

At the core of the G68 lies its advanced digital signal processing (DSP) capabilities. This technology allows the unit to decode and process various audio formats, including stereo, multi-channel surround sound, and high-resolution audio. The G68 supports a wide array of audio formats, ensuring compatibility with virtually all modern audio sources, from CD players to streaming services. It also features Meridian's unique Apodizing filter, which helps to minimize distortion and enhance sound clarity, allowing users to enjoy their music and movies as intended by the creators.

One of the standout features of the G68 is its flexibility in system configuration. The unit can be easily integrated into existing audio and home theater setups, providing multiple inputs and outputs to accommodate various components. It supports both analog and digital connections, ensuring seamless integration with other Meridian products as well as third-party devices. This feature is particularly appealing for those looking to build a custom home entertainment system that meets specific needs.

In addition to its impressive audio capabilities, the G68 also boasts advanced room correction technology. This feature analyzes the acoustic properties of the listening environment and adjusts the output accordingly, optimizing sound quality regardless of the room's layout. The G68 employs proprietary algorithms to ensure that listeners experience even, balanced sound, making it an ideal choice for challenging acoustic environments.

Furthermore, the Meridian America G68 is designed with user-friendliness in mind. Its interface is intuitive, allowing for easy navigation and adjustment of settings. The unit can be controlled via a remote or integrated into a comprehensive home automation system, providing flexibility and convenience for users.

In summary, the Meridian America G68 stands out as a sophisticated audio processing solution, combining advanced technologies with exceptional performance. Its versatility, compatibility, and user-friendly features make it an exemplary choice for anyone seeking to elevate their home audio experience to new heights.
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