Meridian G68 Guía de instalación descargar pdf (Pagina 46)

C a l i b r a t i n g

t h e s y s t e m

4 2

This section explains how to use the Sine/Sub/Sens controls

to check for room resonances, adjust the subwoofer crossover

frequency, or adjust the sensitivity of the analogue sources.

To display the Sine/Sub/Sens controls

• If necessary, unlock the digital surround controller as described in

Configuration Wizard

, page 27.

• Select a source and press

More until the bottom line of the

display shows:

3INE3UB3ENS

2ADIO4RIFIELD

• Press Sine/Sub/Sens.

The bottom line of the display shows the Sine/Sub/Sens controls:

3INE 8OVER 3ENS

2ADIO4RIFIELD

Subwoofer crossover frequency

The G68 Digital Surround Controller allows the crossover frequency

for any subwoofers which you have to be adjusted between 30 and

150Hz. The crossover can be set independently for Music, Logic,

and 5.1 Movie layouts. The default is the THX standard of 80Hz.

To adjust the subwoofer crossover frequency

• Select a source, then display the

Sine/Sub/Sens controls as

described above.

• Press

Xovr- or Xovr+ to decrease or increase the crossover

frequency.

The display shows the current crossover frequency:

Sine -Xover+ -Sens.+

D Xover 85Hz

For THX loudspeaker systems you should not adjust these settings;

they should be left at 80Hz. 80Hz is also the recommended setting

for all movie listening. You may prefer, however, to lower the

crossover frequency for music if the main speakers have good bass

handling down to, say, 50Hz.

Sinewave sweep test

The G68 includes a sinewave signal test, to help you set the

subwoofer crossover frequencies, or check for room resonances. To

avoid possible damage to the speakers the volume is reduced to

50, if necessary, on entering the test.

Warning: This test is very loud. Bass protection is turned

off during this test, and very loud low-frequency signals

may damage the speakers.

To use the sinewave sweep test

• Select a source, then display the

Sine/Sub/Sens controls as

described above.

• Press

Sine to turn on the sinewave signal.

Using the Sine/Sub/Sens controls

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Meridian G68 Guía de instalación Pagina 46

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