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SPEAKER CONFIGURATION SETTINGS DURING INITIAL SET UP
The CENTER MODE switch should be set to match your speaker configuration. The NORMAL setting turns
the CENTER channel speaker ON. This setting removes the bass below 100 Hz from the CENTER speaker and
makes it available to the FRONT LEFT and FRONT RIGHT speakers.
The PHANTOM setting instructs the RSP 970 to turn the CENTER channel speaker OFF and divide the CENTER
channel signal equally between the FRONT LEFT and RIGHT channels. This setting is to be used only when
no center channel speaker is used.
The WIDE setting turns the CENTER channel speaker ON and instructs the RSP 970 to provide full range
frequency response, including bass below 100 Hz, to the CENTER channel. This full frequency range signal will
overload a small center channel speaker. We highly recommend that you listen to the sound quality for potential
bass overload from smaller CENTER channel speakers, if bass is played through them. WIDE should only be
chosen with a CENTER channel speaker that is a full frequency range design, capable of playing powerful
bass notes without overloading.
If you use a SUBWOOFER in your system, it should have a variable or defeatable crossover so that it can be
adjusted to match the front speakers at the crossover frequency. We suggest defeating the crossover built into
the subwoofer. The SUBWOOFER low pass filter output is -3 dB at 120 Hz. Bass below 120 Hz is offered to the
two SUBWOOFER outputs on the back panel. It is impossible to make an accurate suggestion for all combinations
of speakers and subwoofer settings in an owners' manual. You may also want to discuss this aspect of your
installation and speaker selection with your ROTEL/w fi AUTHORIZED DEALER.
SETTING CHANNEL BALANCE IN YOUR SURROUND SOUND SYSTEM
Using the remote control, choose DOLBY PRO LOGIC SURROUND MODE and then press the BAL CHK
button. The speaker settings will be displayed ON SCREEN. Each time the BAL CHK button is pushed, the
SPEAKER channel to be adjusted will change, sequentially. The selected channel will "flash' on and off in the ON
SCREEN display. During BALANCE CHECK, the range of volume adjustment available is from 0 to -12 dB for
each channel. Press the VOLUME ( <, > ) buttons to make the volume level change as needed. The level settings
will be displayed ON SCREEN as you change them. The volume for each successive channel should be
adjusted by using the remote control while sitting down in your favorite place. All of the channels should
be the same volume level from the main listening position. This does not mean that the ON SCREEN
number shown will always be the same value for all the channels. When you have adjusted all the channels,
or cycled through the settings, the display ON SCREEN will go off.
For best resuits, we suggest using a sound pressure level (SPL) meter when making the BALANCE
CHECK settings. An inexpensive ANALOG sound level meter (from Radio Shack®, for example) will be excellent
for this purpose. Listening by ear will not be as accurate. The meter controls should be set to "slow' and "C-
weighting." Holding the sound level meter head high at arms' length, set all channels to 75 dB SPL. The accurate
setting of channel balance is very important and will affect the potential for realistic playback from your system.
DELAY TIME settings should be set at this time. If you are sitting near the surround speakers, choose a longer
DELAY time. If you are equidistant from the FRONT and SURROUND speakers, choose the 15 millisecond delay
time. Add approximately 1 ms for every foot the surround speakers'are closer to you. Settings available are 15,
20, 25 and 30 milliseconds.
The delay time is included to establish the main and center speakers as the primary signals. The "Haas
precedence effect" is used to emphasize the front speakers. Because of the delayed signal to the surround
channels, you hear the front speakers first. They take precedence and localize the sound images as coming from
the front of the room. Some leakage of the front channels into the surrounds is inherent in the system. The delay
time masks this small amount of signal from the front appearing in the surround channels. This helps make the
surround sound experience more believable and enjoyable.
Sometimes the main signal will come from the SURROUND speakers during special effects. Typically though,
most of the sound will be from the FRONT LEFT. CENTER and FRONT RIGHT speakers. With most Dolby
Surround or Dolby Digital movie soundtracks, the SURROUND speakers will not be on all of the time. They will be
on most or all of the time when listening to music surround modes.
WHAT IS DOLBY SURROUND SOUND?
Thousands of popular movies have been released with Dolby Surround encoding in the soundtrack. Many compact
discs have music with Dolby Surround or other surround sound encoding on them also. Dolby Surround is a
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