JBL SYNTHESIS SDP-40HD - Manual (Page 150)

Mode Adjust JBL
5-42
LISTENING MODE MENU OPTION & PARAMETER DESCRIPTIONS (continued)
SURROUND EX AUTO, ON, OFF
Controls the THX Surround EX decoding feature, which can be used to
extract a rear channel from 5.1-channel Dolby Digital sources. When
ON is selected, THX Surround EX decoding is engaged for all
5.1-channel Dolby Digital sources. When OFF is selected, THX
Surround EX decoding is not engaged for all 5.1-channel Dolby Digital
sources. Available in THX ULTRA2, THX SurEX, and THX modes.
When AUTO is selected, THX Surround EX decoding is engaged
when a flagged 5.1-channel Dolby Digital source with THX
Surround EX encoding is detected. THX Surround EX decoding is
not engaged when a non-flagged 5.1-channel Dolby Digital source
with or without THX Surround EX encoding is detected.
Note:
The SDP-40HD cannot automatically detect THX Surround EX encoding in
non-flagged 5.1-channel Dolby Digital sources. A non-flagged input source
does not include information in the input signal that identifies THX
Surround EX encoding.
THX Surround EX listening modes are available when Dolby Digital
Surround EX decoding is engaged. THX or THX ULTRA2 listening
modes are available when THX Surround EX decoding is not
engaged. Refer to the THX ULTRA2, THX SurEX, & THX listening
mode descriptions that begin on page 5-18 or the 5.1mc THX
ULTRA2, 5.1mc THX SurEX, & 5.1mc THX listening mode descrip-
tions that begin on page 5-29 for more information.
Note the following:
• The SURROUND EX parameter AUTO setting is not available for
the 5.1mc THX listening modes.
• Toggling the SURROUND EX parameter setting produces low
level clicks in the front speakers.
• THX Surround EX decoding cannot be engaged unless both
side and rear speakers are present.
• When the Shift command bank is activated, pressing the
remote control THX button while a 5.1-channel Dolby Digital
source is present activates the THX ULTRA2, THX SurEX, or THX
listening mode. Subsequent presses adjust the SURROUND EX
parameter, cycling through the AUTO, ON, and OFF settings.
• When the Shift command bank is activated, pressing the
remote control THX button while a 5.1-channel PCM source is
present activates the 5.1mc THX ULTRA2, 5.1mc THX SurEX, or
5.1mc THX listening mode. Subsequent presses toggle the
SURROUND EX parameter between the ON and OFF settings.
SURROUND MIX -5 to +5dB
Controls the relative level of surround channel information sent to the
audio output connectors labeled Front L/R. It is recommended that
you set this parameter to +2dB or +3dB for all input sources. Available
in 5.1 2-CHANNEL, DTS(-ES) 2-CHAN, and 5.1mc 2-CHAN modes.
VOCAL ENHANCE +6.0dB, +3.0dB, +0.0dB
Controls the level of dialog boost in the audio output connector
labeled Center. Increase this setting to improve dialog intelligibility,
particularly at lower volume levels. Available in all Logic 7 modes.