JBL SDP-40HD manual Surround EX, Surround MIX, Vocal Enhance

Mode Adjust JBL

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.

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