Meridian Audio Digital Surround Controller G61 用户手册

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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.

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

• Press  More until the bottom line of the display shows:

Sine/Sub/Sens.

Clear

Store

Radio Trifield    65

• Press Sine/Sub/Sens.

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

Sine -Xover+

-Sens.+

Radio Trifield    65

   Subwoofer  crossover  frequency

The G61 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.

• 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.+

CD    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 G61 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.

• 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