User guide
58
Configuring the G65
Digital Surround
Controller
Calibration tests
Levels
These tests allow you to adjust the output level to
each speaker individually, and it follows the general
guidelines from Dolby Laboratories and THX.
In each test the display shows the speaker being
tested, and the current relative level. For example:
Left Level +0.0dB
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Press More for help
Use > and < to move between each of the speakers
in the layout in the sequence: Left, Centre, Right,
Side R, Rear R, Rear L, Side L, and subwoofers.
Use A and V to adjust the level of the speaker.
Ignore any tonal difference.
For correct THX reproduction you should adjust each
speaker to 75dB SPL using an SPL meter. Even if
the speakers are not THX approved this setting is
recommended.
If you have Meridian DSP loudspeakers they cannot be
set above +0dB.
Note: You cannot set the level of a subwoofer by ear,
because low-frequency noises sound quieter. To set the
subwoofer correctly either use an SPL meter, or set it
by ear and then reduce the subwoofer gain by 15dB to
correct for human hearing.
When you have completed the Levels section press
> to proceed to the next test.
Distance
These tests allow you to adjust the delay of each of the
speakers in the layout to time-align the system so that
sounds are coincident when they arrive at the listening
position.
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Before setting up the speaker outputs you need
to measure the distance to each speaker from the
listening position:
CentreSub
Left Right
Left
Side
Right
Side
Left Rear Right RearSurround Sub
Measure from ear height at the listening position to
the tweeter on each speaker (where applicable), in the
distance units you have chosen; see
Settings
, page 52.
Use > and < to move between each of the speakers
in the layout.
The display shows the speaker being tested, and the
distance:
Left Distance 18'0
Units ìî ïñ öõú óòô
Press More for help
Use A and V to change the distance.
You can press Units to change between feet/inches
and metres.
Repeat this for each of the speakers in your layout.
Press > to proceed to the next calibration stage.
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