Ada SSD-66 User Manual page 44

Dolby digital surround ac-3/dts preamplifier
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No Redirect (Center Wide) - Used when all front speakers are of equal size. No redirection
will keep each channels bass information directed to only that speaker. If the speaker
is not capable of processing low frequencies, the 80Hz Cutoff Filter will already
have been turned off during the Global Speaker Configuration Setup (pages 24-
27). To provide the subwoofer with bass information, the previously discussed
Bass Summing filter is used. No redirection is the ideal setting for non-digital (AC-
3 or DTS) playback such as Pro Logic or music playback.
C To LF/RF(Center Normal) - Used when the center speaker is smaller than the front right and
left speakers and the front right and left speakers are larger-full range speakers.
This sends the center channels bass information to the front right and left speak-
ers.
LRF/C To Sub - Used only if the subwoofer has an active crossover. This setting sends the
front right, center, and front left speakers bass information to the subwoofer and is
ideally used when all front speakers are smaller speakers, not capable of handling
low frequencies and the subwoofer has an active filter. If the subwoofer does not
have an active filter, the sub will receive wide band bass signal.
C To Sub - Used only if the subwoofer has an active crossover. This setting will send the
center channel's bass information to the subwoofer. If the subwoofer does not
have an active filter, the sub will receive wide band bass signal.
While you will most likely set all Input Labels to the same bass redirection option, depending
on the source component being used, you may opt for different bass redirection options per
Input Label in particular when the Input Label is set to either AC-3 or DTS decoding. Use the
chart below to set the bass sum and bass redirect. The best way to determine alternate bass
redirection options will be through trial and error, since each room, speaker package, etc. will
vary from project to project. If you are in a rush to setup the system, use one of the three
following options and set them up for each Input Label.
Please note, that in order to set bass redirection for an Input Label, you cannot be in
either the "STEREO" or "QUAD BYPASS" modes.
CENTER
MODE
SPEAKER
PRO LOGIC & AC-3
SMALL
PRO LOGIC & AC-3
LARGE
PRO LOGIC & AC-3
SMALL
PRO LOGIC & AC-3
SMALL
DTS
SMALL
DTS
LARGE
DTS
SMALL
DTS
SMALL
AC-3
LARGE
DTS
LARGE
FRONT
SURROUND
SPEAKERS
SPEAKERS
REDIRECT
SMALL
SMALL
NO REDIRECT
LARGE
LARGE
NO REDIRECT
LARGE
SMALL
C TO LF/RF
LARGE
LARGE
C TO LF/RF
SMALL
SMALL
LARGE
LARGE
LARGE
SMALL
LARGE
LARGE
LARGE
LARGE
NO REDIRECT
LARGE
LARGE
- 45 -
BASS
BASS SUMMING
LCRS+LFE=SUB
Use when the front speakers are of size.
LCRS+LFE=SUB
Use when the front speakers are of size.
Use when the center channel is smaller
LCRS+LFE=SUB
Use when the center channel is smaller
LCRS+LFE=SUB
N/A
SUM-10DB=SUB
N/A
SUM-10DB=SUB
N/A
SUM-10DB=SUB
N/A
SUM-10DB=SUB
Use to recreate theater like bass, where
LFE ONLY=SUB
the bass is its own signal. Please note,
some digital software may not contain
any bass signal and with these settings,
N/A
LFE ONLY=SUB
no bass will be created from the sub.
NOTES
than the front channels.
than the front channels.
Use for any Multi-Pin Input Label
Use for any Multi-Pin Input Label
Use for any Multi-Pin Input Label
Use for any Multi-Pin Input Label

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