THX sound is like a quality standard
proposed by Lucas Film for the optimal playback system of sound
effects in either the film studio or the dubbing studio and the
theatre. In other words, with this system the sound effects
devised by a filmmaker can be played back in any theatre with a
certain consistent level of quality maintained. THX is the
standard for the sound effects, not for the soundtrack formats as
with Dolby Digital and DTS. Therefore, the two standards can be
used simultaneously. If THX films recorded using Dolby Digital or
DTS are played back with a Dolby Digital or DTS amp that is uses the THX system, the result is even better
The consumer-format THX system incorporates the various techniques
used in the theatre system so users can enjoy the full cinematic
experience in their own home.
History of THX
The first movies were silent, with "talkies* introduced later.
Cinemascope and stereo sound effects were subsequently developed,
followed by the Dolby system featuring Surround Sound.
Unfortunately, the sound systems of movie theatres lagged far
behind those of these technologically advanced sound systems.
Lucas Film created a wonderful sound mix in the film "Return of
the Jedi' (of the Star Wars series). When the film was tested in
an ordinary movie theatre, however, there were some sounds that
could not be heard in the theatre but were audible in the dubbing
studio. In order to make such sounds audible in the theatre
setting as well, THX was developed. The name 'THX' comes from
George Lucas' film 'THX 11 38' and the X-over (cross over or
crossover frequency filter) of the THX filter developer, Tomlinson
Configuration of THX
The THX Sound System has a variety of regulations involving the
recording studios, playback equipment, theatres' sound system and
acoustic conditions, and other factors. Inspections to ensure
compliance with these regulations are carried out every 6 months.
However, at home, using only the THX processor and speakers for
THX, you can enjoy the impact of THX sound. The THX system for
home use is designed to be unaffected by the room's acoustical