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Mode Adjust JBL Performance
5-18
See “Listening Mode Menu Option & Parameter Descriptions” on page 5-29 for detailed
descriptions
.
The table below indicates the conditions in which THX Surround EX
and THX Ultra2 decoding are engaged.
• THX Surround EX decoding is engaged when the SUR-
ROUND EX parameter is set to ON, or the SURROUND EX
parameter is set to AUTO and a flagged 5.1-channel Dolby
Digital source with THX Surround EX encoding is detected.
• THX Ultra2 decoding is engaged when the SURROUND EX
parameter is set to OFF, or the SURROUND EX parameter is set
to AUTO and a non-flagged 5.1-channel Dolby Digital source
with or without THX Surround EX encoding is detected.
• Listening mode name differs depending on the encoding
present in the input source, the SURROUND EX parameter
setting and the speaker setup.
– The THX ULTRA2 listening mode is available when THX
Ultra2 decoding is engaged.
– The THX SurEX listening mode is available when THX Sur-
round EX decoding is engaged.
– The THX listening mode is available when neither THX
Ultra2 nor Surround EX decoding is engaged.
– The THX ULTRA2 and THX SurEX listening modes cannot be
activated unless side and rear speakers are present.
Note:
The AV1 cannot automatically detect THX Surround EX encoding
in non-flagged 5.1-channel Dolby Digital sources. A no flagged
source does not include information in the input signal that iden-
tifies THX Surround EX encoding.
Option/Parameter Default Setting Possible Settings
RE-EQUALIZER ON ON, OFF
SURROUND EX AUTO AUTO, ON, OFF
COMPRESSION OFF AUTO, ON, OFF
LFE MIX +0.0dB -10.0dB to +0.0dB
OUTPUT LEVELS -- --
CUSTOM -- --
Input Source
Parameter Setting 5.1-Channel Dolby Digital
5.1-Channel Surround EX-Encoded
Dolby Digital (Flagged)
5.1-Channel Surround EX-Encoded
Dolby Digital (Non-Flagged)
SURROUND EX: AUTO 5.1 THX ULTRA2 5.1 THX SurEX 5.1 THX ULTRA2
SURROUND EX: ON 5.1 THX SurEX 5.1 THX SurEX 5.1 THX SurEX
SURROUND EX: OFF 5.1 THX ULTRA2 5.1 THX ULTRA2 5.1 THX ULTRA2