JBL SYNTHESIS SDP-40HD - Manual (Page 129)

SDP-40HD Mode Adjust
5-21
DIGITAL & DIGITAL EX
These listening modes are designed to decode and playback 5.1
discrete channels from 5.1-channel Dolby Digital sources. The five
main channels are full frequency. The .1 channel, often referred to
as the LFE information, has a limited frequency range of 120Hz.
The mode name differs depending on the encoding present in the
input source, the EX DECODING parameter setting, and the
speaker setup.
The Dolby DIGITAL EX listening mode is recommended for Dolby
Digital sources recorded with Dolby Digital Surround EX encoding.
This listening mode can also be used with other types of
5.1-channel Dolby Digital sources with mixed results. The table at
the bottom of the page shows the conditions for the behavior of
the Dolby Digital EX mode when activated.
The Dolby DIGITAL EX listening mode is available when both the
side and rear speakers are present and Dolby Digital Surround EX
decoding is activated. Matrix decoding is then applied to derive a
surround back channel from the other surround channels.
• Dolby Digital Surround EX decoding is activated when the EX
DECODING parameter is set to ON or AUTO and a flagged
5.1-channel Dolby Digital source recorded with Dolby Digital
Surround EX encoding is detected.
• Dolby Digital Surround EX decoding is not activated when the
EX DECODING parameter is set to OFF or AUTO and a
non-flagged 5.1-channel Dolby Digital source recorded with or
without Dolby Digital Surround EX encoding is detected.
Note:
The SDP-40HD cannot detect Dolby Digital Surround EX encoding in
non-flagged 5.1-channel Dolby Digital input sources because they do
not include information in the input signal that identifies Dolby Digital
Surround EX encoding.
The Dolby DIGITAL listening mode is available when both the side
and rear speakers are present and Dolby Digital Surround EX
decoding is not activated.
MODE ADJUST OR DIGITAL EX DIGITAL
Input Source
Parameter Setting 5.1-Channel Dolby Digital
5.1-Channel Surround EX
(Flagged)
5.1-Channel Surround EX
(Non-Flagged)
EX DECODING: AUTO DOLBY DIGITAL DOLBY DIGITAL EX DOLBY DIGITAL
EX DECODING: ON DOLBY DIGITAL EX DOLBY DIGITAL EX DOLBY DIGITAL EX
EX DECODING: OFF DOLBY DIGITAL DOLBY DIGITAL DOLBY DIGITAL