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41
5 Setting the THX Audio—THX AUDIO SETUP
These settings are required to
obtain the optimum effect from
the THX modes.
Note:
When “SUBWOOFER” is set to “NO” on the SPEAKER SETTING
submenu (see page 38), this submenu is not available in the following
cases:
– If and “SURR BACK SP” is also set to “NONE,” or
– If “SURR BACK OUT” is also set to “1SPK.”
7
THX ULTRA2 SUBWOOFER?
A THX Ultra2 certified subwoofer can reproduce very low bass
sounds (up to 20 Hz) and, if it is used at home, the subwoofer
sounds may be reinforced unsuitably because of resonance and
reflection caused by the floor and walls (boundary gain).
Using this function, you can compensate for this over-enhanced
bass sound through the subwoofer.
Select one of the following.
YES : Select when a THX Ultra2 subwoofer is used.
NO : Select when a conventional subwoofer is used.
7
BOUNDARY GAIN COMPENSATION
When the subwoofer sounds are unsuitably enhanced by so-
called boundary gain, compensate for it using this function.
Select one of the following:
ON : Select to apply the compensation.
OFF : Select when no compensation is required.
Note:
If “THX ULTRA2 SUBWOOFER?” is set to “NO,” this function is
not available.
7
SBACK SP POSITION
Register the installation position of the surround back
speakers—whether they are placed close to each other or apart
from each other.
This setting takes effect only for the THX modes:
APART : Select when two surround back speakers are
placed apart from each other (more than 120
cm)—recommended for THX Ultra2 Cinema
and THX Music modes.
CLOSE : Select when two surround back speakers are
placed close to each other (from 30 cm to 120
cm)
TOGETHER: Select when two surround back speakers are
placed adjacent to each other (less than 30 cm).
7
BASS PEAK LIMIT
When this setting is “ON,” Bass Peak Limit functions so that
sounds exceeding the preset peak level (see below) will be cut
off.
When this setting is “ON,” you can set the bass peak level using
the bass test tone (see below) to eliminate bass sound distortion.
Select one of the following:
ON : Normally select this.
OFF : Select when not using Bass Peak Limit.
Note:
If “THX ULTRA2 SUBWOOFER?” is set to “YES,” this function is
not available.
7
BASS TEST TONE
Only when “BASS PEAK LIMIT” is “ON,” you can emit the
bass test tone through the subwoofer and/or other speakers
(depending on your settings on the SPEAKER SETTING
submenu), and adjust the bass peak level (see below).
• The bass test tone can be emitted when one of the Surround/
THX/DSP modes is in use.
Select one of the following:
ON : Select to emit the bass test tone.
OFF : Select to stop the bass test tone.
Notes:
• If “BASS PEAK LIMIT” is set to “OFF,” this function is not
available.
• While transmitting the bass test tone, Parametric Equalizer and
Midnight Mode will be canceled temporarily.
7
BASS PEAK LVL
Only when “BASS PEAK LIMIT” is “ON,” you can set the bass
peak level so that sounds exceeding the peak level will be cut off
to prevent the bass sound distortion.
Adjust the bass peak level as follows:
• While listening to the bass test tone, press and hold # (RIGHT)
to increase the bass test tone output level, and stop increasing
the level just before the test tone is distorted. The level where
you stop can be memorized as the bass peak level.
• Each time you press # (RIGHT) or @ (LEFT), the bass peak
level changes by ± 1 dB.
• You can adjust the level within the range of “––– dB
(minimum),” and “–71 dB” to +18 dB.” When shipped from
the factory, the level is set at “–10 dB.”
Notes:
• When you set “BASS TEST TONE” to “ON,” the bass peak level
is reset to “– – – dB” (minimum).
• If “THX ULTRA2 SUBWOOFER?” is set to “YES,” this function
is not available.