NAD T760 Owner's Manual page 21

In Dolby Pro logic surround mode, the rear channel
delay time can be set from 15ms to 30ms and 1ms
per step. In DTS surround mode, the channel delay
time cannot be adjusted.
• When both delays have been entered, choose
"SAVE & EXIT" to save the settings and return to the
Main Menu.
Channel Balance:
The output levels of each of the speakers connect-
ed to the T 760 may need to be adjusted so that there
is an even balance of sound from all the speakers in
the system. If, for instance, the relative volume level
to the Left and Right speakers and the center speak-
er is set too low, most of dialogue may be difficult to
follow. If, on the other hand it is set too loud, the over-
all balance will sound unnatural.
To adjust the channel balance the T 760 is
equipped with a TEST button (No. 6) to help assess
the loudness levels of each speaker. Before adjusting
the channel balance level make sure the master vol-
ume is turned down to a normal listening level.
Pressing the TEST button engages the Test signal
generator to allow for adjustment of all speaker lev-
els, so that each channel can be adjusted for equal
loudness at your listening position. The test signal
scrolls automatically with 5 second intervals from
Left, Center, Right, Rear Right, Rear Left, to sub-
woofer in continuous cycles. If an adjustment in set-
ting is made for one of the speakers, scrolling will
stop until 5 seconds after the adjustment was made.
Both display panel and OSD show which speaker is
being fed with the test signal. Use the cursor 1 and 2
button to respectively increase or decrease the level
for the current speaker.
NOTE:
There is no output in the Subwoofer during noise
sequencer operation; therefore it is difficult to adjust
the level in test mode. The Subwoofer level can be
adjusted in the OSD setup menu with musical input.
The Channel Balance for each speaker can be
adjusted in 1dB increments. Continue to calibrate the
level for each speaker until equal loudness is
achieved at your listening position. A more accurate
adjustment can be made using a sound level meter, if
available. Set the meter to "Slow" and "C-weighted"
modes and re-check the settings with the meter
placed in several different positions in the general lis-
tening area.
Press the TEST button again to leave or cancel the
Test mode, any changes will be memorized automati-
cally.
The loudspeaker levels can also be individually
adjusted with the OSD setup menu:
• Call up the SETUP menu of the On Screen
Display (Fig. 7).
Select the channel for which you wish to adjust and
set the level so that it matches the other speakers.
For best results it is best to start with the Left channel
set at 0dB and to match the other speakers to it.
Normally, if the Right speaker is located at the same
distance from the listening position to the Left speak-
er it should be set at the same level as the Left
speaker.
NOTE:
If no level adjustments were made, press TEST
again to return to the selected source. Any changes
in the Channel Balance Setting, under the test mode,
will be memorized automatically.
LFE (Low Frequency Effects, with a Dolby Digital
source, the subwoofer channel) can be set from
+10dB to -10dB.
The Delay time for the Surround speakers also
needs to be correctly set for your normal listening
position. Refer to the section "Channel Delay" in this
chapter for more information.
GB
NAD
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