Bryston SP1.7 Series Instructions Manual page 11

12. THX Button
Pressing this button will engage the SP1.7's default THX listening mode. The default mode is selected using the
"EX Control" menu (see page 26).
NOTE: THX Surround EX™ decoding is only available in the THX listening mode.
If the "EX Control" Option is set to OFF, selecting this function (LED green) will automatically incorporate the
THX post processing option for all surround modes. Dolby Digital 5.1, DTS 5.1 and DTS-ES 6.1 bitstreams will
be decoded and presented with THX post-processing.
If the "EX Control" Option is set to ON, selecting this function (LED green) will engage THX Surround EX™
decoding for back channel speaker(s), and incorporate THX post processing, for Dolby Digital 5.1 bitstreams
only. For DTS bitstreams, the signal will be decoded and presented with THX post-processing. THX Surround
EX™ is only available if the back speakers are engaged. If THX Surround EX™ is unavailable, an error message
will appear on the LCD.
If the "EX Control" Option is set to AUTO, selecting this function (LED illuminated) will engage THX
Surround EX™ decoding only for bitstreams that are flagged as having EX encoded content.
NOTE: not all DVDs that are recorded with THX Surround EX contain this flag.
Pressing the THX button repeatedly will toggle between the ON and
DISABLE settings for THX Surround EX™. The default THX
mode will only be engaged when entering the THX mode from
another listening mode (such as Surround or Stereo)
For 2-channel source material, the SP1.7 will synthesize surround
information based on the chosen Surround Mode (see 31. for
Surround Mode information), and add THX post-processing.
THX
NOTE: If the THX listening mode is engaged, PLII Music and
NEO:6 Music are not available, due to THX requirements.
(please SEE Appendix B FOR MORE Information about THX post processing)
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