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5.1 Movie DSP preset parameters

Surr. Rear

Surr. Rear, Surr. Side, Switches the surround

Surr. All

signal between the 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

Top, Max, Mix

control; see opposite.

† Dolby Digital and Dolby Digital THX only.

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 can be set to one of the following options:

Off

No compression.

Low

Provides moderate 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.