Meridian Audio G68 manual Thx, 28dB to 0dB

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D S P p r e s e t s

THX

As with the PLIIx THX DSP preset, THX re-equalises the signals to suit domestic listening conditions, and applies frequency-response correction and decorrelation to the surround channels to make the surround sound more realistic. It can be used whether or not your other equipment is THX approved.

THX DSP preset parameters
Parameter	Options	What it changes
Surround	Surr. Rear, Surr. Side, Surr. All	Switches the surround signal between the side and rear speakers.

PLIIx Mov6, THX Surround EX, PLIIx Mus6, THX Ultra2

Cinema, and THX Music

These presets are available if you have four surround speakers. They use Dolby Pro Logic IIx, Dolby Surround EX, and THX Ultra2 Cinema processing to generate multiple signals for larger home theatres.

PLIIx Mov6 uses extended PLII technology from Dolby to generate four surround signals from traditional multichannel source material like Dolby Digital 5.1. It is intended for use with movie soundtracks.

PLIIx Mus6 also creates four surround signals; it is intended for multichannel music playback from sources such as DVD-A or SACD music discs.

THX Ultra2 Cinema and THX Music use a THX proprietary process called advanced speaker array to provide a mix of ambient and directional surround sounds using four surround speakers. Optimum performance of THX Ultra2 Cinema and THX Music is produced when the two rear speakers are placed close together behind the listening position. THX Ultra2 Cinema is recommended for movie soundtracks that are not Dolby Surround EX encoded, and THX Music is recommended for listening to multichannel music.

EX, THX Surround EX, EZ, THX Ultra2 Cinema, and THX Music DSP preset parameters

Parameter	Options	What it changes
LFE	-28dB to 0dB	The relative level of the LFE bass channel.