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or ⇓ key.
In the config sub-menus, even more settings can be activated as described in the
following paragraphs:
6.1 Speakers
The SPHERE AV100/120 contains extensive bass management adjustments, so
that the bass signal can be re-routed to those loudspeakers specifically capable of
handling low-frequency information.
The following selections can be made in the config.speaker menu by using the
navigation keys described above:
Left speaker (L): SMALL or LARGE
Right speaker (R): SMALL or LARGE
Centre speaker (C): SMALL or LARGE or OFF
Surround left speaker (SL): SMALL or LARGE or OFF
Surround right speaker (SR): SMALL or LARGE or OFF
Subwoofer (SUB): ON or OFF
When a speaker is selected as SMALL, the bass signal will be re-routed to the -
subwoofer or the L&R speakers (bass management).
If a speaker is turned off, the sound signal will be sent to the remaining speakers,
which are selected as active (down-mixing).
Special attention should be given to the subwoofer management:
For Dolby Digital 3/2 and DTS input signals, a special low frequency channel (LFE)
is normally included in the bitstream, which is indicated with a “.1” after the input
stream indication, e.g. 3/2 .1 . The LFE channel produces an output signal for the
subwoofer. This means even if all speakers are selected as LARGE, where no
signal normally should be sent to the subwoofer by the bass management, the LFE
input channel overrides this setting and sends out its own subwoofer signal.
For Stereo and ProLogic II,
no LFE channel is present. If all speakers are chosen as
LARGE, the bass management will not send any signal to the subwoofer. To obtain
a subwoofer signal in this case, the user can select the subwoofer – max bass ON
option under the config.cross freq menu. Now, the AV100/120 takes the
accumulated full range signal from the L and R channels and sends it to the
subwoofer.
When activating the subwoofer for Stereo and Pro Logic modes, you can decide
between the two following options:
a ) Select L & R (or L,R,C,SL,SR in Pro Logic II) as SMALL. The bass management
will now send the L & R low frequencies to the subwoofer. You can choose
between six different crossover frequencies in the config.cross freq menu.
or
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