5.1 THX SURROUND EX or 5.1 THX
MODE ADJUST 
5.1 
SUR EX
The SURROUND EX parameter activates and deactivates the 5.1 THX SURROUND EX listening mode, provided both side and rear speakers are selected (see page 3-18). The default value of this parameter is ON, which activates the 5.1 THX SURROUND EX listening mode. When set to OFF, the 5.1 THX SURROUND EX listening mode becomes 5.1 THX. Toggling the setting of the SURROUND EX parameter produces low-level clicks in the front speakers.
5.1 THX SURROUND EX
•Designed for playback of Dolby Digital Surround EX encoded sources.
•Similar to 5.1 THX, but utilizes Dolby Pro Logic to decode three surround channels from Dolby Digital Surround EX-encoded input types.
•Applies re-equalization and timbre matching. Re-equalization simulates the high-frequency rolloff that occurs in a movie the- ater as sound travels from the speakers to the listeners. Most films are mixed for movie theaters, and may sound too bright when played back in a home theater without re-equalization. Timbre matching helps minimize the timbre differences between the front and side channels, which results in smoother sound movements between these channels.
•Recommended for Dolby Digital Surround EX encoded sources.
5.1 THX
•Designed for playback of 5.1-channel Dolby Digital encoded sources.
•Utilizes Dolby Digital to decode 5.1 discrete channels from 5.1 Dolby Digital encoded input types.
•Applies re-equalization, timbre matching, and adaptive decorrelation. Re-equalization simulates the high-frequency rolloff that occurs in a movie theater as sound travels from the front speakers to the listeners. Most films are mixed for movie theaters, and may sound too bright when played back in a home theater without re-equalization. Timbre matching helps minimize the timbre differences between the front and side channels, which results in smoother sound movements between these channels.
Adaptive decorrelation increases the perceived width of the listening space. Since movie theaters utilize surround speaker arrays and most home theaters do not, decorrelation of the mono surround channel increases the perceived width of the surround field in a home theater.
•Recommended for Dolby Digital encoded sources.
| Default | |
Parameter | Value | Values |
| | |
RE-EQUALIZER | ON | ON, OFF |
| | |
SURROUND EX | ON | ON, OFF |
| | |
COMPRESSION | OFF | AUTO, ON, OFF |
| | |
LFE MIX | +0.0dB | -10.0 to +0.0dB |
| |
OUTPUT LEVELS | See page 5-17 for more information |
| |
CUSTOM | See page 5-17 for more information |
An alphabetical listing of parameter descriptions begins on page 5-20.
