5.1 Logic 7 (Dolby Digital version)
5.1Logic 7 combines all the features of Dolby Digital AC-3 with enhance- ments by Lexicon and LucasFilm. This effect uses Logic 7 matrix technology to enhance the steering between the side speakers and the rear speakers, so sounds intended to come from behind the listener actually do come from behind. This effect also includes the adaptive decorrelation and re-equalizaer features of THX 5.1.
5.1Logic 7 provides the ultimate in film reproduction. It brings out all the increased excitement and spaciousness a 7 channel speaker system can produce.
5.1 Logic 7 Parameters | Parameter | Initial Value | Range |
| AC-3 STATUS (display only — not user adjustable) | |
| COMPRESSION | Off | Off, On, AUTO |
| DIALOG ENHANCE | +0.0dB | +0.0dB, +3.0dB, +6.0dB |
| RE-EQUALIZER | Off | On, Off |
| REAR DELAY OFFSET | 0ms | 0-20ms |
| SURROUND LEVEL | +3dB | -5 to +5dB |
| LFE MIX LEVEL | +0.0dB | -10.0db to0.0dB |
| SUBWOOFER LVL | +0dB | -5 to +5dB |
| EFFECT LEVEL | 0dB | -30dB to +05dB |
| CUSTOM | | |
| | | |
AC-3 STATUS displays the current status of incoming AC-3 data. The displayed items are not user adjustable.
COMPRESSION enhances the intelligibility of Dolby Digital material at low volume levels (-6dB or lower). When set to AUTO, this control auto- matically limits peak signals and boosts low level signals. The amount of compression increases proportionately as volume is decreased. This is quite useful when listening to Dolby Digital soundtracks at low output levels. When set to ON, full compression is applied, regardless of volume.
DIALOG ENHANCE boosts dialog in the center channel. By targeting specific frequencies, it can boost only dialog, without raising the entire center channel level (which would alter the output balance achieved during calibration).
RE-EQUALIZER equalizes the left, center, and right channel outputs to match the overall frequency balance of the original recording. Without this re-equalization, many films and some television programs will sound too bright.
REAR DELAY OFFSET is an additional delay added to the rear channels. This delay increases the apparent size of the listening space by increasing the rear delay time. Feel free to experiment to find the setting that works best.
