NAD 917 - Page 11

TAPE 2. Selects Tape 2 as the active input.
CD. Selects CD as the active input.
MUTE. Mutes all outputs and displays MUTE on the
Display Panel. Pressing MUTE again, restores sound
at the original level.
TEST. Starts the Surround Set-up Test procedure.
CDR. Switches the Controlied Dynamic Range (CDR)
circuit on or off.
PRESET AV. Switches 917 to Tuner and pages
through the Preset stations on AM or FM.
SEARCH AY . Starts the Tuner Search function
moving up or down the frequency band.
TUNE AY. Selects the Manual Tune function, step-
ping up or down the frequency band.
VOLUME A*V | increases or decreases the Volume
setting, using the motorised front panel Volume con-
trol.
SURROUND AV. Adgiusts the reiative level of the
Surround speakers.
SUB WOOFER AV. Adjusts the relative level of the
Sub Woofer.
CENTER A¥ Adjusts the relative level of the Center
channel speaker.
PRO LOGIC. Switches Dolby Pro Logic mode on or
off.
GB)
STADIUM. Switches Stadium mode on or off.
HALL. Switches Hail mode on or off.
CLUB. Switches Club mode on or off.
SIBILANCE FILTER. Switches Sibilance Filter on or
off.
CASSETTE DECK CONTROL (for use with NAD
Cassette Deck)
STOP. Stops Play or Recording.
REC. Starts Recording.
PLAY. Starts Play.
4<4. Rewind.
>P . Fast Forward.
PAUSE. Pauses Play or Record Modes.
CD PLAYER CONTROL (for use with NAD CD
Player)
STOP.Stops Play.
44. Scan back.
PP. Scan forward.
PLAY PAUSE. Play and Pause. :
NEXT DISC. Next disc. (for NAD CD changers)
APPENDIX
A SHORT GUIDE TO SURROUND
SOUND.
Since the middle of the 1970's, film companies have
been making movies in increasing numbers in Dolby
Stereo, the four channel surround sound system
available in most movie theaters today.
Fortunately it is a simple operation to take the film’s
Dolby Stereo soundtrack and place it on a stereo
VHS video tape, Laser Disc or Video-CD. The sound
track does require some conversion for home use,
and the domestic version of Dolby Stereo is cailed
Dolby Surround.
Today, most video copies of movies also contain this
surround information originally designed for the
movie theater. As well as videos, Doiby Surround is
also being used on TV programmes and on music
CDs, and all of these can be decoded using your
917.
Unlike the quadraphonic systems which tried to pro-
duce pin-point sounds coming from all directions,
Dolby Surround is designed to give you a clear front
image with the Surrounds filling the room with atmos-
pheric sound.
For best results, the Surround loudspeakers should
not beam the sound directly at the listener. One way
of achieving this is to use ‘dipole’ Surround speakers
which aim the sound down the walls rather than
directly into the room. An alternative is to use stan-
dard small loudspeakers for Surrounds, but not to
point them directly at the listening position. It is
always worth experimenting with various Surround
speaker positions to see which works best in your
room.
WHY HAVE A CENTER SPEAKER?
The Dolby Pro Logic decoder produces three sepa-
rate outputs for the Front signals - Left, Center and
Right. On most soundtracks, the sound effects and
music are spread across all three Front channels but
the dialogue is mainly fed to the Center channel only.
Using a separate Center channel speaker will allow
the dialogue to cut through even the biggest sound
effects and musical scores. Having the sound spread
across three Front speakers also stabilises the stereo
image, making the usable listening area much bigger.
If you are using the 917 with only two front speakers,
setting the rear panel switch to PHANTOM will place
the center information on both the Left and Right
speakers. This creates the impression of a center
channel sound source.
For best results, you should consider using a Center
speaker. Ideally it should be the same type as the
Left and Right speakers, although there are now
many new speakers such as the NAD 808CC, which
are specifically designed as Center channel add-ons
for existing stereo systems.
CAUTION: Ensure that any speaker that is to be
used near a TV or monitor is of the magnetically
shielded type (see loudspeaker’s instruction manual).
Unshieided speakers used too close to a TV or moni-
tor may cause colour distortions of the TV picture. (It
is not normally possible to modify an unshielded
speaker to work very close to a TV or monitor)
SPEAKER PHASE
in a home theatre system it is important that the three
front speakers are ail in phase compared to each
other and that the surround speakers are in phase