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THX Audio Setup
With the “SurrBack Speaker Spacing” setting, you can
specify the distance between your surround back speakers.
You can then apply THX’s Boundary Gain Compensation
(BGC) to compensate the perceived exaggeration of low
frequencies for listeners sitting very close to a room
boundary (i.e., wall).
You can also set the THX Loudness Plus. When the
“Loudness Plus” is set to “On”, it is possible to enjoy
even subtle nuances of audio expression at low volume.
This result is only available when the THX listening mode
is selected.
■SurrBack Speaker Spacing
`< 1ft (< 0.3m):
Select this if your surround back speakers are
between 0 and 1 foot (0–30 cm) apart.
`1 ft - 4 ft (0.3 m - 1.2 m):
Select this if your surround back speakers are
between 1 and 4 feet (0.3–1.2 m) apart.
`> 4ft (> 1.2m):
Select this if your surround back speakers are more
than 4 feet (1.2 m) apart.
Note
• Cannot be set if “Surr Back Ch” is set to “1ch” (➔ 39), “Surr
Back” is set to “No” (➔ 39), or Powered Zone 2 is being used
(➔ 54).
■BGC
`Off
:
Select this to turn off BGC.
`On:
Select this to turn on BGC.
■Loudness Plus
`Off:
Select this to turn off Loudness Plus.
`On
:
Select this to turn on Loudness Plus.
■Preserve THX Settings
`Ye s
:
Audyssey Dynamic EQ
®
/
Audyssey Dynamic Volume
®
will not be active in
THX listening mode.
`No:
Audyssey Dynamic EQ /
Audyssey Dynamic Volume will be active in THX
listening mode depending on the setting.
Note
• This setting is fixed at “Yes” if “Loudness Plus” is set to “On”.
This setting is NOT set automatically by
Audyssey 2EQ
®
Room Correction and Speaker Setup
function (➔ 23).
THX Loudness Plus
THX Loudness Plus is a new volume control technology
featured in THX Ultra2 Plus™ and THX Select2 Plus™
Certified receivers. With THX Loudness Plus, home
theater audiences can now experience the rich details in
a surround mix at any volume level. A consequence of
turning the volume below Reference Level is that cer-
tain sound elements can be lost or perceived differently
by the listener. THX Loudness Plus compensates for the
tonal and spatial shifts that occur when the volume is
reduced by intelligently adjusting ambient surround
channel levels and frequency response. This enables
users experience the true impact of soundtracks regard-
less of the volume setting. THX Loudness Plus is auto-
matically applied when listening in any THX listening
mode. The new THX Cinema, THX Music, and THX
Games modes are tailored to apply the proper THX
Loudness Plus settings for each type of content.