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DVD99
13
ENGLISH
Channel Delay
For best surround-sound effects it is desirable to adjust the channel
delay so that sounds from each speaker arrive at the listener at the
same time. This is done by measuring the distance from the listening
position to the Left or Right Front speaker (which should be equidistant
from the listener), distance from the listening position to the Centre
Speaker and similarly to the Right Rear Speaker, Left Rear Speaker and
Subwoofer. See diagram below:
The measurements are not too critical so do not worry if your front
speakers are slightly asymmetric or about making very precise
measurements (+/- a foot or 30cm or so is fine).
The channel delay o be entered for each speaker is then the difference
between the distance to the Front Speakers and the speaker to be
configured.
So for instance if the Front Speakers are 5 ½ feet from the listener and
the Centre speaker 3 feet from the listener the channel delay to be
entered for the Centre Speaker is 2 ½ feet. Similarly if the Right Rear
Surround is 3 ½ feet from the listener the channel delay would then be
2 feet.
Note: The distance between the surround speakers and the listener
must be shorter than or equal to that between the front speakers and
the listener.
The units are feet for units sold in North America / Canada and metres
for units sold in Europe / Australasia.
Use to select each speaker in turn and to enter a distance
value.
The DVD99 uses this to calculate and use the correct delay time for each
channel so that each channel reaches the listener at the same moment.
Channel Trim
Use to set the volume of each individual channel.
Press the buttons to select the channel to be adjusted and use the
buttons to raise or lower the volume of the selected channel in 0.5dB
increments. Press the ENTER button to confirm the settings and return to
the Audio Setup Page.
Channel trim is generally not required since most A/V receivers have the
capability to adjust channel trim and compensate for speaker sensitivity
differences. However if your receiver does not have such functions, you
may adjust channel trim on the DVD player. For most accurate results, it is
recommended that you use test tones from a calibration disc, such as AVIA
Guide to Home Theater, and a SPL (Sound Pressure Level) meter.
1
2
4
3
1 = Front Left & Right speakers
2 = Centre speaker
3 = Surround Left speaker
4 = Surround Right speaker
5 = Subwoofer
Diagram shows 5.1 channel setup.
5