Audio Design Associates Cinema Reference Mach II PTM-8150 - Manual (Page 91)

Page 90
Adaptive Decorrelation™ - In a movie theater, a large number of surround speakers help create an
enveloping surround sound experience, but in a home theater there are usually, only two speakers.
This can make the surround speakers sound like headphones that lack spaciousness and envelop-
ment. The surround sounds collapse into the closest speaker as you move away from the middle
seating position. Adaptive Decorrelation slightly changes on surround channel’s time and phase rela-
tionship with respect to the other surround channel. This expands the listening position and creates-
-with only two speakers--the same spacious surround experience as in a movie theater.
When you select a mode that includes THX Enhancements, all three enhancements are active (On).
When you select a non-THX mode, these filters are off.
While the THX modes permit instant access to certain THX enhancements, the Cinema Reference
Mach II also permits you to selectively turn the Re-EQ, Timbre Match, and Decorrelation enhance-
ments to on or off. If you are interested in adjusting the effects of Re-EQ, Timbre Match, and
Decorrelation, you can do so following the steps below.
1 While playing a source, select a non-THX mode.
2 Turn the Mode knob clockwise until the display’s second line reads SETUP MENU and press
the Mode knob.
3 The display’s second line will now read RE-EQUALIZE. To turn THX Re-Equalization on or off,
press the Mode knob. To adjust other THX filters, skip to step 4.
4 While the display’s top line reads RE-EQUALIZE, you can activate (IS ACTIVE) or deactivate
(IS INACTIVE) the Re-EQ filter by turning the Mode knob. Then press the Mode knob.
5 Turn the Mode knob clockwise one click until the display’s second line will now read TIMBRE
MATCH. To turn THX Timbre Match on or off, press the Mode knob. To adjust other THX
filters, skip to step 6.
6 While the display’s top line reads TIMBRE MATCH, you can activate (IS ACTIVE) or deactivate
(IS INACTIVE) the Timbre Match filter by turning the Mode knob. Then press the Mode
knob.
7 Turn the Mode knob clockwise one click until the display’s second line will now read
DECORRELATE. To turn THX Decorrelation on or off, press the Mode knob.
6 While the display’s top line reads DECORRELATE, you can activate (IS ACTIVE) or deactivate
(IS INACTIVE) the Decorrelation filter by turning the Mode knob. Then press the Mode
knob to continue with other setup menu options. To completely exit the setup menu, turn
any knob other than Mode.