This Effect, available only in DC-1’s equipped with Dolby Digital process- ing, provides THX 5.1 Cinema enhancements for film soundtracks recorded in the Dolby Digital format. This processing compensates for the acoustical differences between large mixing theaters and the typically smaller home environment. In this effect the side and rear speakers are driven in parallel when you designate side speakers as STANDARD (LARGE or SMALL) in the Speaker Configuration menu.
THX 5.1
(Dolby Digital version)
Parameter | Initial Value | Range | THX 5.1 Parameters |
AC-3 STATUS (display only — not user adjustable) | | |
COMPRESSION | Off | Off, On, AUTO | |
RE-EQUALIZER | On | On, Off | |
LFE MIX LEVEL | +0.0dB | -10.0dB to 0.0dB | |
SUBWOOFER LVL | +0dB | -5 to +5dB | |
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.
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.
LFE MIX LEVEL allows separate level attenuation of the LFE channel, which is ultimately mixed to the subwoofer output. As the bass from as many as five other channels is added to the LFE, it can significantly raise subwoofer output levels — and create the risk of damage to a system. Careful adjustment of this parameter will allow you to achieve proper tonal balance and reduce the risk of damage.
SUBWOOFER LVL boosts or cuts the subwoofer output level. Although the normal subwoofer level is set during the calibration procedure, with some recordings it may be desirable to increase or decrease this deep bass level.
