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Meridian MConfig Configuration Manual

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Meridian Configuration Program Guide

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  • Page 1 Meridian Configuration Program Guide...
  • Page 2 Boothroyd|Stuart Meridian, Meridian, Meridian Digital Theatre, Meridian Lossless Packing, MHR, MHR Smart Link, the MHR logo, and MLP are registered trademarks of Meridian Audio Ltd. Microsoft, MS-DOS, Windows, Windows NT, and the Windows logo are either registered trademarks or trademarks of Microsoft Corporation.

  • Page 3: Table Of Contents

    i i i Contents C o n t e n t s Getting started Room Correction Explains how to install the Meridian Confi guration Program, Explains how to run the Meridian Room Correction program and gives a general overview of it key features and create profi...
  • Page 4 C o n t e n t s...

  • Page 5: Getting Started

    G e t t i n g s t a r t e d Getting started This chapter explains how to install the Meridian Configuration Program, and gives a general overview of its key features. Overview single configuration file representing the settings of each product in your system and the way they are interconnected.
  • Page 6 G e t t i n g s t a r t e d Benefits of using the Meridian Configuration Program Configuring your system with the Meridian Configuration Program offers several important benefits. In particular: • You can configure the entire system in a single operation. •...

  • Page 7: The Meridian Configuration Program

    G e t t i n g s t a r t e d The Meridian Configuration Program window The following illustration shows the key features of the Meridian Configuration Program window: Breadcrumb trail Information bar Tabs to add new products Products area Resource Bar Speakers...

  • Page 8: Installing The Meridian Configuration Program

    Installing the Meridian Configuration Program G e t t i n g s t a r t e d Requirements To use the Meridian Configuration Program you need: • A computer running Windows 95, 98, 2000, NT 4, ME, or XP. •...

  • Page 9: Quick Tour

    Q u i c k t o u r Quick tour This section is designed to give you a quick tour of the Meridian Configuration Program. It shows how to create a complete configuration for a typical simple system. At each stage the Quick tour shows information about some of the more advanced features of the Meridian Configuration Program in grey tinted boxes.

  • Page 10: Getting Help

    Q u i c k t o u r Starting a configuration To start creating a configuration from the Welcome page: • Click the Next link in the Breadcrumb trail: The Products page will then be displayed. This allows you to define the products in your system and indicate how they are connected together.

  • Page 11: Products: Adding A Controller

    Products: Adding a controller Q u i c k t o u r The controller is defined as the product that selects sources and • Click the No button to indicate that you do not want to fetch controls the volume for the system; it is the digital surround data from the digital surround controller: controller, preamplifier, or combination product.
  • Page 12 Q u i c k t o u r Advanced tips Performing other actions • Click with the right mouse button on most objects in the Adding products by dragging them from the Resource Bar Meridian Configuration Program window to display a The most flexible way of adding products is to drag an appropriate context menu of actions appropriate to that object: icon from the Resource Bar (to the left of the Products page)
  • Page 13 Q u i c k t o u r The Properties dialogue box shows a list of the properties Restoring a property to its default value associated with the product, and allows you to view or change • Click the property with the right mouse button and click Revert their values: to Default on the context menu: The menu option shows the default value.

  • Page 14: Products: Inserting A Source

    Products: Inserting a source Q u i c k t o u r The next step is to add the sources in your system. For this Quick The Meridian Configuration Program will use a set of connections tour we will assume a satellite receiver is required. which match the back panel screening of the controller to make wiring up straightforward •...
  • Page 15 Q u i c k t o u r Advanced tips The following dialogue box allows you to enter a new name: Showing a list of the recommended connections If you choose the Yes (recommended) option in the Connection Wizard dialogue box, you can preview the recommended connections.
  • Page 16 Q u i c k t o u r Showing and hiding connections If the connectors are incompatible a stop cursor will be displayed: You can choose whether or not source connections are displayed by clicking the View or hide source connections button in the toolbar: To display information about the style of each connection line: Removing a connection...
  • Page 17 Q u i c k t o u r A prompt allows you to choose whether to make a single or • Specify the type of connector using the Class and Type drop- multichannel connection. down list, enter a name, and choose Output or Input as appropriate: If you choose Yes the multichannel connection will automatically be made:...

  • Page 18: Products: Adding Speakers

    Products: Adding speakers Q u i c k t o u r The next step is to add the speakers in your system. • Click the Insert a Speaker link in the Information bar. The Insert Speaker dialogue box allows you to select which type of speaker you want to add, and the positions in which to add it.
  • Page 19 Q u i c k t o u r • In the Size section select Small to indicate that these speakers should not handle bass: • Click the OK button to add the speakers. The Meridian Configuration Program will automatically prompt you to add an amplifier to the layout to drive the passive speakers.
  • Page 20 Q u i c k t o u r Advanced tips • Click Speaker connections or Controller connections to display the appropriate list of connections: Adding a speaker by dragging it from the Resource Bar • Drag an icon from the Speakers panel of the Resource Bar (to the left of the Products page): Displaying or changing the speaker properties •...

  • Page 21: Soft Keys

    Soft keys Q u i c k t o u r The Soft keys page allows you to customise the soft keys for each of the G Series products in the system starting with the controller. In this example the only applicable product is the G68ADV. An initial recommended layout is provided for each product;...

  • Page 22: Bass Management

    Bass management Q u i c k t o u r The Bass management page specifies how bass is handled in the system for each of the three speaker layouts. The settings are automatically set to recommended values and can be ignored for a simple configuration.
  • Page 23 Q u i c k t o u r Advanced tips If you include two or more subwoofers in the layout, irrespective of the size of the main speakers the subwoofers will handle the bass Meridian digital surround controllers allow you to define three and LFE for the system.

  • Page 24: Speaker Distances

    Speaker distances Q u i c k t o u r The Speaker distances page gathers information about the relative positions of the speakers in your system, and the distance of each speaker from the listening position. First choose the units you would like to work in.

  • Page 25: Pre-Calibration Store

    Pre-calibration store Q u i c k t o u r The Pre-calibration Store page stores the settings you When the store has completed successfully the calibration have created to the G68 Digital Surround Controller and then procedure will start automatically and you will hear a noise signal automatically starts the calibration sequence so you can tune your from the first speaker in your layout.

  • Page 26: Post-Calibration Fetch

    Post-calibration fetch Q u i c k t o u r The Post-calibration fetch page fetches the calibrated settings from the digital surround controller so you can complete the configuration. • Click the Start button to start the fetch. When the fetch is complete: •...

  • Page 27: Speaker Properties

    Speaker properties Q u i c k t o u r The Speaker properties page allows you to check or edit the calibration of the speakers in the system. This allows you to review the changes made during the calibration, and you should not normally need to alter the settings.

  • Page 28: Room Correction Store

    Room Correction store Q u i c k t o u r The Room Correction Store page runs the Meridian Room Correction procedure. This is optional and you can skip this stage by clicking the Next link in the Breadcrumb trail For information about running the Room Correction procedure see the chapter Room Correction , page 29.

  • Page 29: Preset Properties

    Preset properties Q u i c k t o u r The Preset properties page shows the list of the presets available to the digital surround controller, and allows you to edit the values of each preset. For a simple configuration you can skip this page. •...

  • Page 30: Preset Mapping

    Preset mapping Q u i c k t o u r The Preset mapping page allows you to specify the default DSP preset selected for each source, and each audio format. You can skip this page for a simple configuration. •...

  • Page 31: Store Settings

    Store settings Q u i c k t o u r This page stores the settings to the G68. • Connect the serial cable. For more information see Pre-calibration Store , page 21. • Click the Start button to store the settings. When the store has completed: •...

  • Page 32: Finish

    Finish Q u i c k t o u r The Finish page confirms that you have successfully completed the configuration of your system. Save a copy of your configuration It is recommended that you save a copy of the final configuration document on your PC, with an appropriate name, so that you can refer to it again at a later date, if necessary.

  • Page 33: Room Correction

    R o o m c o r r e c t i o n Room Correction The G68 Digital Surround Controller incorporates room correction, which takes advantage of advanced digital signal processing techniques to compensate for room artefacts, including resonances and reflections, to give a significant improvement in the sound. This chapter explains how to run the Meridian Room Correction program and use it to create profiles for use with the digital surround controller.
  • Page 34 R o o m c o r r e c t i o n initial short test sequence, designed to check that the microphone Other problems that can be corrected by room correction are is set up correctly, a series of test signals are presented to each imbalances between the speakers due to positioning constraints.

  • Page 35: Auto Set Up

    R o o m Auto set up c o r r e c t i o n This section explains how to create a basic room correction using The next page allows you to set up the input for microphone or default settings.
  • Page 36 R o o m c o r r e c t i o n • Click the Test mic button to run a test to check that the The MRC set up wizard will then indicate whether the test was microphone is connected correctly: successful: The following dialogue box will count down to the test:...
  • Page 37 R o o m c o r r e c t i o n The Automatic option is recommended unless you are The Room Correction program will then present a test tone to each experienced in using the Meridian Room Correction program: loudspeaker in turn for each of the distinct layouts defined in the digital surround controller Configuration file: Depending on the number of channels and layouts in your...
  • Page 38 R o o m c o r r e c t i o n When the measurements have been completed the Build filters • Click the Close button to close the dialogue box. dialogue box will be displayed showing the filters being built for each channel and each speaker layout in turn: You will then be given the option of saving the settings: •...
  • Page 39 R o o m c o r r e c t i o n Each preset will be assigned the profile designed for the layout used with the preset. The wizard creates profiles called Mus, Log, and Mov for the Music, Logic, and 5.1 Movie Speaker layouts respectively.

  • Page 40: Viewing And Repeating Measurements

    R o o m Viewing and repeating measurements c o r r e c t i o n The Measurements panel shows a measurement for each of • Click the Measurements tab. the speaker layouts set up in the digital surround controller configuration.
  • Page 41 R o o m c o r r e c t i o n You can select one of the following three graph types from the Low frequency response Graph type drop-down list. All three views of the measurement are calculated from the same measured test signal: Impulse response Shows the loudspeaker-room response to a low frequency sine wave, swept between 0 and 250Hz.
  • Page 42 R o o m c o r r e c t i o n Waterfall plot To compare two measurements The Plot measurement window allows you to display a particular graph type for two different profiles, or show the effect of one profile compared to the original uncorrected room.
  • Page 43 R o o m c o r r e c t i o n To change the axes The following dialogue box allows you to select which channels • Click the Axes… button in the Plot measurement window. you want to repeat: The Set axes dialogue box allows you to set the range of the x, y, and z (waterfall plot only) axes: •...
  • Page 44 R o o m c o r r e c t i o n The following dialogue box then indicates how long the selected measurements will take, and gives you an opportunity to leave the room before the test sequence begins: To create multiple measurements You can create additional measurement sets to take account of different configurations of the room, such as with curtains open or...

  • Page 45: Creating Multiple Profiles

    R o o m Creating multiple profiles c o r r e c t i o n After creating a measurement set you need to create a profile for To build the filters for a profile each of the speaker layouts in each of the measurement sets. •...
  • Page 46 R o o m c o r r e c t i o n Choosing a shorter decay time will lead to a profile with more As the filters are calculated the response will be displayed in filters, and filters which are deeper, which will take more bass the lower half of the dialogue box.
  • Page 47 R o o m c o r r e c t i o n After building filters for a profile the Active profiles list shows The following dialogue box confirms that the profiles have been the number of filters used for the profile, and the number of stored: remaining filters available: •...

  • Page 48: Editing Filters

    R o o m Editing filters c o r r e c t i o n After building the filters for a profile you can edit the filters The columns give the filter number, centre frequency (Hz), numerically or graphically to adjust their parameters, or change the gain (dB), and filter bandwidth (Hz), and you can adjust these response of each filter.
  • Page 49 R o o m c o r r e c t i o n • Select the filter you want to edit by clicking on the square above Gain the filter trough: • Drag the handle at the base of the filter: Alternatively if the filters are close together you can select a Bandwidth specific filter using the Filter field below the Filter response curve.

  • Page 50: Changing Settings At A Later Date

    R o o m Changing settings at a later date c o r r e c t i o n This section describes how to change the room correction or • Select the Profiles tab, and proceed as described in Editing configuration settings of the digital surround controller at a later filters , page 44, or Creating multiple profiles , page 41.
  • Page 51 R o o m c o r r e c t i o n The newly created file will contain the profile labels and these If you want to keep the original settings: can be used to choose the profile you want to use with a given preset.

  • Page 52: Troubleshooting

    R o o m Troubleshooting c o r r e c t i o n This section gives suggested solutions to typical problems that The following sections describe some of the most likely problems may occur when using the Meridian Room Correction program. which will cause the Power and SNR values to go outside these If problems still persist after working through the following steps ranges.
  • Page 53 R o o m c o r r e c t i o n • The lead from the SPL meter is intact. The most likely cause of this problem is that an analogue source is • The SPL meter is switched on and set to the 90dB band, or the connected to the input chosen for the microphone.
  • Page 54 R o o m c o r r e c t i o n Repeated measurements due to poor SNR SPL meter is set on a low band Measurements are retried until the SNR is larger than 39 (35 for The following graph shows an impulse response obtained when a subwoofers) or the maximum number of retries have been made.
  • Page 55 R o o m c o r r e c t i o n Loudspeaker is running in a non-linear range Hum in the system The effects of a loudspeaker running in a non-linear range is most The effect of hum on the measurement is most easily observed in easily observed in the impulse response.
  • Page 56 R o o m c o r r e c t i o n...

  • Page 57: Index

    I n d e x Auto set up 31 measurements comparing 38 displaying 36 multiple 40 Bass management page 18 repeating 39 Breadcrumb trail 5 Measurements panel 36 Meridian Configuration Program window 3 configuration saving 28 Options (View menu) 21 starting 6 Connection Wizard 10 controller, adding 7...
  • Page 58 I n d e x room correction profiles 29 creating 41 filters 41, 44 Room Correction program 29 Auto set up 31 changing settings 46 filters 41, 44 profiles 29, 41 troubleshooting 48 Room Correction store page 24 serial cable, connecting 21 settings, storing 27 Soft keys page 17 source, inserting 10...

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