Onkyo HT-R990 Manuel D'instructions page 46

THX Audio Setup
■
Surr Back Speaker Spacing
<1ft (<0.3m)
1ft-4ft (0.3m-1.2m)
>4ft (>1.2m)
You can specify the distance between your surround back
speakers.
Note
• Cannot be set if:
– "Surround Back Ch" is set to "1ch"
– "Surround Back" is set to "No"
– "Powered Zone 2" is set to "Yes"
turned on (➔ page 60).
■
BGC
Off
On
You can 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).
Note
• If the "Subwoofer" setting is set to "No", this setting cannot be
selected (➔ page 44).
■
Loudness Plus
Off
On
When the "Loudness Plus" is set to "On", it is possible to
enjoy even subtle nuances of audio expression at low
volume.
This is only available when the THX listening mode is
selected.
■
Preserve THX Settings
Yes
No
If this setting is set to "Yes", Dynamic EQ and Dynamic
Volume have no effect in THX listening mode.
Note
• This setting is fixed to "Yes" if "Loudness Plus" is set to "On".
En
46
page 44).
(➔
(➔ page 44).
(➔ page 43) and Zone 2
THX Loudness Plus
THX Loudness Plus is a new volume control
technology featured in THX Ultra2 Plus™, THX
Select2 Plus™ and THX I/S 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 certain 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 regardless of the volume
setting. THX Loudness Plus is automatically 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.