Speaker Distance; Adjusting The Volume - NAD T747 Owner's Manual

OPERATION
USING THE T 747 – SETUP MENU
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 [
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 [
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 [
level. Press [ ] to select the next channel for adjustment.
You can exit "Test" mode at any time by pressing the [
back to "Speaker Setup" menu.
NOTES
• All speakers must be in their final locations before level-setting.
• If you are balancing levels "by ear", choose one speaker—usually the
center— as a reference and adjust each of the others in turn to "sound
as loud" as the reference. Be sure that you remain in the primary
listening position while balancing all channels.
• Your subwoofer (if any) should be set with its integral crossover defeated,
or if undefeatable, set to its highest-possible frequency if you are using the
T 747's Subwoofer output. Final subwoofer-level adjustment "by-ear", using
music and film sound material, is frequently useful.
• Due to the effects of room acoustics, matched-pair speakers (front;
surround; back) will not always calibrate to exactly the same level offset
readings.
6

SPEAKER DISTANCE

] keys to move up or
] to display "^ν" on
] to effect the change in
] key, bringing you
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 [
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 Volume knob, use the AVR 3's [VOL
"master volume" of the T 747 raising or lowering the channels altogether. A
momentary keypress will change the master volume by 1 dB increments.
If you hold down [VOL
the key is released.
Since recordings vary considerably in overall average level, there is no
imperative to listen at any particular master-volume setting. A setting of -20
may sound "as loud" from one CD or DVD as -10 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
• Changing input or listening-mode selections does not release muting.
• Adjusting the volume level via the AVR 3 or the front panel volume knob
will automatically release the mute function.
] keys to individually
] to adjust the
] the master-volume change will "run-on" until