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3 Ch Stereo Mode
The 3 Channel Stereo mode is used only when
there are no surround speakers in the room or
when the user wishes to eliminate the sound com-
ing from the surround speakers. The front three
speakers will still get the normal sound field as
processed by the Pro Logic circuit. The subwoofer
will also be active in this mode.
The 3 Ch Stereo mode has one optional filter in
addition to the variable Acoustical Parameters set
for each Input Label. This is the Auto Balance
filter which can be set to either on or off. When
the Auto Balance filter is on, the right and left chan-
nel input levels will automatically balance within 3
dB of each other. To set the Auto Balance feature
when in the 3 Ch Stereo mode:
Step 1
Repeatedly press the SETUP MODE button until the display reads either "AUTO
BAL ON" or "AUTO BAL OFF".
Step 2
Use the VOL UP or VOL DN buttons to change between the two Auto Balance
settings (on or off).
Step 3
Press the INPUT SELECT button to exit the programming mode.
Phantom & Phantom Plus Modes
While ADA does not recommend using the SSD-66 (5.1) in a system without a center chan-
nel, there two modes can be used to redirect the center channels information to the front right
and left channels. As this is a mode based on Dolby Pro Logic decoding, the center channels
information is its own even though it is being redirected to the front right and left channels.
The surround channels operate as though they were standard Pro Logic Channels. The
PHANTOM PLUS mode is identical to PHANTOM , however, in this mode, the Dolby Rear
Channel Noise Reduction filter is off. Thus the surround channels in Phantom Plus receive a
bandwidth of 20-20KHz while the surround channels in Phantom receive a bandwidth of 20-
15KHz. The active speakers are diagrammed on page 40.
The Phantom and Phantom Plus modes have one optional filter in addition to the variable
Acoustical Parameters set for each Input Label. This is the Auto Balance filter which can be
set to either on or off. When the Auto Balance filter is on, the right and left channel input levels
will automatically balance within 3 dB of each other. To set the Auto Balance feature when in
either Phantom or the Phantom Plus mode:
Step 1
Repeatedly press the SETUP MODE button until the display reads either "AUTO
BAL ON" or "AUTO BAL OFF".
Step 2
Use the VOL UP or VOL DN buttons to change between the two Auto Balance
settings (on or off).
Step 3
Press the INPUT SELECT button to exit the programming mode.
CENTER
FRONT (LEFT)
SUBWOOFERS
SUR. (LEFT)
- 53 -
FRONT (RIGHT)
SPEAKER ON
SPEAKER OFF
SUR. (RIGHT)
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