NAD T 747 Owner's Manual - page 26
SETTING SPEAKER LEVELS AT TEST MODE
While at “Speaker Levels” menu, press the AVR 3 remote’s “Test” key
activating the T 747’s Speaker Levels balancing test signal. You will hear
a Test tone. To test each channel, use AVR 3’s [
] keys to move up or
down the speaker channels. If you do not hear the Test tone, check your
speaker connections or “Speaker Configuration” settings.
To adjust the level of a particular channel, press [ ] to display “^ν” on
the extreme right of the selected channel. Adjust the selected channel to
desired level by pressing [
] – the level will change by 1 dB increments
up to ±12 dB. After adjusting a channel, press [ ] to effect the change in
level. Press [
] to select the next channel for adjustment.
You can exit “Test” mode at any time by pressing the [ ] key, bringing you
back to “Speaker Setup” menu.
NOTES
• Allspeakersmustbeintheirfinallocationsbeforelevel-setting.
• Ifyouarebalancinglevels“byear”,chooseonespeaker—usuallythe
center—asareferenceandadjusteachoftheothersinturnto“sound
as loud” as the reference. Be sure that you remain in the primary
listening position while balancing all channels.
• Yoursubwoofer(ifany)shouldbesetwithitsintegralcrossoverdefeated,
or if undefeatable, set to its highest-possible frequency if you are using the
T747’sSubwooferoutput.Finalsubwoofer-leveladjustment“by-ear”,using
music and film sound material, is frequently useful.
• Duetotheeffectsofroomacoustics,matched-pairspeakers(front;
surround;back)willnotalwayscalibratetoexactlythesameleveloffset
readings.
SPEAKER DISTANCE
Your system’s speaker distance settings are a subtle but important
refinement of your setup. Informing the T 747 of the loudspeaker-to-
listener dimensions of each speaker automatically imposes the correct
delays, optimizing imaging, intelligibility and surround-sound ambience.
Enter your dimensions with precision within about 1 foot (30 cm).
SETTING SPEAKER DISTANCE
While at “Speaker Distance” menu, use the [
] keys to individually
set Front Left, Center, Front Right, Surround Right, Back Right, Back Left,
Surround Left and Subwoofer to the distance measuring from your
principal listening position to the front surface of their corresponding
loudspeakers. Distance can be set up to 30 feet or 9 meters.
Distance can be displayed as feet or meters selectable at the “Unit of
Measure” item.
ADJUSTING THE VOLUME
In addition to the front panel VOLUME knob, use the AVR 3’s [VOL
] to
adjust the volume of the T 747, raising or lowering all the channels together.
A momentary keypress will change the master volume by 1 dB increments.
If you hold down [VOL
] the volume change will “run-on” until the key
is released.
Since recordings vary considerably in overall average level, there is no
imperative to listen at any particular volume setting. A setting of -20 dB
may sound “as loud” from one CD or DVD as -10 dB does from another.
The T 747 will power-up from Standby mode at whatever master volume
setting was last used; however, if the prior setting was greater than –10 dB,
the T 747 will power up at –10 dB. This prevents inadvertently beginning a
session at excessive volume.
MUTING THE SOUND
Use the AVR 3’s “Mute” key to silence all channels completely. Muting is
always available regardless of the source or listening mode selections.
NOTES
• Changinginputorlistening-modeselectionsdoesnotreleasemuting.
• AdjustingthevolumelevelviatheAVR3orthefrontpanelvolumeknob
will automatically release the mute function.
OPERATION
USING THE T 747 – SETUP MENU
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