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DSP
PRESETS
Discrete Digital DSP preset parameters
* Dolby Digital and Dolby Digital THX only.
† See below.
Using dynamic range control
Because Dolby Digital is a digital format it allows dynamic range control
without the distortion involved in analogue methods. The Compress
parameter allows you to set one of the following options:
Parameter Options What it changes
Surr. Rear Surr. Rear, Surr. Side, Switches the surround signal between the
Surr. All side and rear speakers.
LFE 0 to -30dB The relative level of the LFE bass channel.
Max SPL† 105 to 120dB SPL The peak-level limit for an LFE subwoofer.
Limit† -15 to -5dBFS The peak-level limit of the total bass signal
added to the main speakers.
Compress* Off, Low, Med, The dynamic range control; see opposite.
Top, Max, Mix
Option Description
Off No compression.
Low Provides a moderate amount of bottom-up compression. This raises quiet
sounds above the background noise, which is ideal for demonstration and
quiet listening.
Med Provides moderate amounts of both bottom-up and top-down
compression.
Top Provides a moderate amount of top-down compression. This reduces loud
sounds.
Max Provides full bottom-up and top-down compression. Quiet sounds are
raised to be audible and loud passages are minimised to avoid
disturbance, which is useful for late-night listening.
Mix Bypasses dialogue normalisation and references the sound pressure level
in the studio where the material was mixed.
