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THX is a motion picture quality certification system (despite being branded as a "sound system" until 1997) founded by Tomlinson Holman and George Lucas in 1982 (in turn was then-owned by Lucasfilm Ltd. until 2002, when spun-off in its present-day company, THX Ltd. It's now owned by Creative Labs), named after the first film Lucas directed, THX 1138. The THX system was created for the theatrical release of "Star Wars: Episode VI - Return of the Jedi". And later appeared on the VHS release of most 20th Century Fox movies and the earliest DVD releases later on in 2002. THX officially stands for "Tomlinson Holman's EXperiment". THX has provided certified VHS, DVD, LaserDisc, and Blu-ray (and HD-DVD; Brave Story only) films from major studios such as Buena Vista/Walt Disney Pictures/Touchstone Pictures, 20th Century Fox, Paramount Pictures, WGBH, Metro-Goldwyn-Mayer, Searchlight Pictures, Universal Pictures, and Pioneer LDC, also when this was seen in theaters. They also certify video games, Dell PCs, TiVo Boxes, and other home theater equipment as well.


THX Tex2- Moo Can



1st logo (1983)

We start with a black screen before the following white text fades in: "For the past 35 years, motion picture loudspeaker systems have not changed..." Later it fades out and new white text appears reading "Lucasfilm, Ltd. and this theatre are pleased to introduce a new motion picture sound system." That text fades out and we wait for a while and the letters "THX", underlined and which have the slightly taller "T" stem extend over the other two letters, appear in a glassy sky blue color. The color fades in majestically with "LUCASFILM LTD." above it and "SOUND SYSTEM" below it, both in small text. It stays on screen for about 10 seconds, then slowly fades out with the text above and below the logo.

2nd logo (1984-2008)

On a black background, we see a blue outline of a rectangle. The gray text "The Audience is Listening" fades inside the outline, then fades out. A few seconds later, the THX logo in silver appears, the blue rectangle outline fades out, and


appears above and below, respectively. The THX logo shines.


Throughout the years, this trailer had many different variants:

  • 1995 A: The audio was remixed digitally in Dolby Digital and DTS with then-new technology.
  • 1995 B: Probably the most recognizable THX trailer variant. It was exclusive to home video releases and revised a bit more. The gray text reading "The Audience is Listening" is replaced with "Digitally mastered for optimal video and audio performance" in Arial font in white and arranged in the center of the outline. That text appears longer than the regular version, and "DIGITALLY" appears above the THX logo and "MASTERED" appears below that logo. Those texts fade in with the THX logo instead of appearing after the blue outline disappears, and they sparkle while the THX logo shines.
  • 1995 C: Both the audio and the trailer is shorter than the standard 1983-1997 theatrical version. The audio (in this, and both 1995 A & B variants) is also in +2 higher (on VHS & LD; +3 on PAL releases), or sometimes -1.5 lower on DVDs.
  • On LaserDisc releases from THX, the blue rectangle appears as usual, but with a difference: the message reads "Mastered and Duplicated for Audio and Video Performance" in Arial Narrow font. When the THX logo appears, [LASER I/ DISC] appears under THX. The logo shines after the blue rectangle fades out. The pitch is +2 pitches higher (on E note), like the VHS variant.
  • From 1997-2006, an alternate version appeared where the original text above (and above only) the THX logo was "LUCASFILM LTD." This appeared only on Buena Vista releases until it was officially replaced with the "DIGITALLY MASTERED" (as described above) text when Lucasfilm Ltd. spun off THX into its present-day company.
  • For the Dell PC's THX Picture and Sound Optimizer disc, "The Audience is Listening" tagline is replaced with "Your Dell PC is THX Certified". "Dell" is in its usual font. "SOUND SYSTEM" is replaced with "BEST PICTURE. BEST SOUND." Afterwards, the URL is seen with the trademark and a disclaimer at the bottom.
  • 2010: The trailer is remastered, or recreated, in high definition. The blue rectangle is wider and glows, "The Audience Is Listening" text is in a white Imprint shadow font and the THX logo glows and shines slowly. Below is a THX Ltd. copyright notice.
  • 2010 A: "The Audience is Listening" text is replaced with "Digitally mastered for superior sound and picture quality," in the same Arial font (a la 1995 B). Debuted on home entertainment releases starting with Star Wars: The Original Trilogy Blu-ray.
  • On the Apollo 13 DTS LaserDisc, the Deep Note on the THX LaserDisc logo is the -1.5 pitch Deep Note like the DVD/Tex.
  • On some LaserDisc prints of the Stargate widescreen AC-3 and Species, the Deep Note on the THX LaserDisc logo is a short version of the 1983 Deep Note (blending in with the fade out of Dolby Ghost Train), though other prints use the +2 pitch Deep Note.
  • On the 1994 LaserDisc of Night of the Living Dead, the Elite Entertainment logo fades to the THX LaserDisc logo.
  • The 2000 UK DVD of Aliens (1986) has the +1 PAL pitch version of the -1.5 DVD Deep Note. It was recently spotted.

3rd logo (1988-2003)

A small gray box appears in the center of the screen. Then, the hand of a conductor, holding a baton, moves up in the box. The hand flicks the baton, blasting out a blue "hyperspace". It turns red, and when it fully turns red, we see a 3D THX logo zoom towards us against a black screen with red dots. Then, we see some text saying "The Audience is Listening" in the same font and color used in "Broadway". A few seconds, a subtitle reading "Lucasfilm, Ltd. Sound System" fades in too.


  • This trailer was remixed in Dolby Digital in 1995. This variant had slight changes. At the start, text fades in reading "Dolby Digital sound in a THX Theatre," and at the end the Recorded in Dolby Digital logo was added at the left-bottom of the screen.
  • On Laserdisc releases starting with Twister, the words "Mastered and duplicated for optimal video and audio performance" fades with the red dots. Then, it fades to the 3D THX logo. Once it's finished zooming, the THX Laserdisc logo from "Broadway" fades and zooms inside the silver outlined rectangle. The THX Laserdisc logo and the silver outlined rectangle shine. This was used until 2001.

4th logo (1993-1999)

On a black background, we see some white text that reads "This auditorium is equipped with a THX sound system." A few seconds later, the background turns into a red-black cloudy background. We see some white text that reads "The Audience Is Listening." After that, the red-black background turns slowly turns blue, somewhat similar to the previous background. Seconds after, a light with lens flares moves upward and a 90° turned THX logo rotates to its front in a blue-black gradient background, with "LUCASFILM LTD" over and "SOUND SYSTEM" below.


  • The 2001 Fox Five-Star Collection DVD of 'Speed replaces "The Audience Is Listening" text with "Best Picture. Best Sound. You're watching a THX Certified Feature." and "SOUND SYSTEM" with "BEST PICTURE. BEST SOUND." appearing below the logo at the end.
  • The Dell PC DVD version replaces "The Audience Is Listening" with "Your Dell PC is THX Certified." and "SOUND SYSTEM" with "BEST PICTURE. BEST SOUND." "Dell" is in its usual font and the url appears at the end with a copyright notice.
  • OnThe THX Ultimate Demo Disc (the THX Ultra 2 and THX story featurettes), a digital 4:3 version of this trailer can be spotted.

5th logo (1994, 1996-1997; 2001-2007)

We see a film marquee with the text "SISKEL & EBERT: THE MOVIE" on it, with ""TWO THUMBS UP" - SISKEL & EBERT" below it. We then cut to many Simpsons characters appearing in theater seats. The light dims, and then brightens a bit. Then we cut to the movie screen, then a white screen with "THX" on it (not the same as the other trailers, obviously to avoid being sued) appears, with "SOUND SYSTEM" and "THE AUDIENCE IS LISTENING" under it. The sound shakes the theater/cinema, propelling people backwards, breaking glasses and teeth, blowing up an exit sign, crumbling the ceiling and even a man's head. After the chaos ensues, we cut back to the screen as the audience cheers for the logo. We then cut to Grandpa, who yells "Turn it up! TURN IT UP!".

6th logo (1996-2009)

The THX logo fades in as it usually would. All of a sudden, the logo sputters and then breaks down as if due to an electrical failure. A light is switched on as a robot named Tex rolls in from off-camera. Tex opens a panel on the "X", grabs a rocket pack, and flies off screen, pulling out a hammer just before he goes off screen, muttering "Oh, George..." (referring to George Lucas.) Tex hammers at something on the right side of the screen, drills at something on the left side and then flies over to the T and moves a large switch. The switch causes the logo to re-activate and complete its usual sequence with the "LUCASFILM LTD." and "SOUND SYSTEM" text. Tex realizes the door in the "X" is still open and kicks the logo, which shuts the douyy9or, causing a black screen to fall reading "The Audience Is Listening".


  • On DVD or LaserDisc releases, the messages from the Broadway Trailer, which are "Digitally Mastered for Optimal Audio and Video Performance", or "Mastered and Duplicated for Optimal Audio and Video Performance" appears without the blue rectangle outline. Then, the animation plays as usual.
  • Between 1996 and 1997, the "sound system" title appears under THX (as well as Lucasfilm Ltd. on the top). After 1997 the "sound system" name was removed.
  • There is an extended version in which after Tex drills something he starts to saw, then hits a hard object and yells "Ow", muttering afterward. The rest of the trailer plays like normal. This only appears on Fox Demo Disc #1 and disc 2 of the North American DVD release of Finding Nemo.
  • On the THX Vimeo page and DVD releases such as Toy Story 2 Special Edition, the black screen that reads "The Audience is Listening." is replaced with the THX website URL. The "LUCASFILM LTD." and "SOUND SYSTEM" text are absent.
  • On the Toy Story CAV laserdisc, the only LD release to use this trailer, [ LASER I/ DISC ] from the Broadway Laserdisc trailer shines under THX. The "Mastered and Duplicated" message appears prior to THX appearing. The DTS and standard Dolby Laserdiscs of Toy Story just use the "Broadway" trailer.
  • A "Dell PC" version exists.
  • A rare version with the words "Digitally Mastered" is rumored to exist.

7th logo (1998-2007)

We see Tex the robot from the previous trailer, as he appears out of nowhere right in front of us. He has a can in his hand which has a picture of a cow on a field and says "moo" (which is in a bubble cloud, as if the cow were saying it), and the only way we see it is that Tex zooms it up towards us closer. He takes it back, and turns it upside down, and dips it, realizing the can is empty. After flipping it right side up again, Tex gives us a "one minute" signal. He flies to a lifeless THX logo, opens a hatch, and then pulls some sort of cable from it. He then returns with the "moo can". This time, however, the cable is revealed to be a power plug in his opposite hand, and plugs it into the can. After that, we hear the sound of cows mooing, and, beside that, the THX logo appears sliding up from the middle of the screen to nearly the top. Tex points to the text, but suddenly the THX logo begins to rumble and shake. Tex sees this, and he nervously flies off with the can and the plug. The THX logo jolts to the left side for a moment before going back to it's normal position, and the cable is pulled back into the logo, the hatch closes, and, like the last trailer, the black screen with the text "The Audience is Listening" falls to the screen.


  • Most of the time, the THX logo is already seen at the very beginning of the trailer before the animation begins, which means that, in this variant, Tex is basically doing all of his animation right in front of the logo. On a few alternate occasions between 1997 and 2005, the Lucasfilm Ltd. name was seen on top of THX; then the screen falls as usual, but replaces "The Audience Is Listening" with "The Best Sound, The Best Picture. You're Watching a THX Certified Feature." (as seen in the "Cavalcade" trailer).
  • In 2009, when Monster joined THX, the trailer became slightly updated. When Tex gets the cord, the camera zooms in to reveal a Monster HDMI cable. When he plugs it in, the graphics on the moo can change it into a Monster Moo Can. "Monster" in 3-D font fades and slides up to the top at the same time as the THX logo. When the THX logo rumbles, the Monster logo rumbles and the black screen shows the THX Monster logo in white and the THX Monster trademark in white.
  • A "Dell PC" version exists.
  • The video game Lair for PS3 has a special variant. After the logo finishes, the creatures from the game run under the URL for THX ( The last "Moo" sound can still be heard.

8th logo (1999-2008)

We see a pitch black screen (a la the 1983 "Broadway" trailer), then we see the text "Let's see it in" appearing in separate words zooming in the center of the screen. Then we see the THX logo with the Lucasfilm Ltd. notice at the top of THX. The logo shines and we fade-out.

9th logo (2000; 2001-2010)

In a darkly-lit environment, we zoom in toward a glassy blue sphere, which has clouds rolling and lightning flickering. As the environment illuminates, we see that the sphere is barely hovering over a textured blue floor. Suddenly, the glassy blue sphere shatters, and the sky is revealed to contain several rolling gray clouds. The glass then melts. and gathers in the center. Some lightning strikes it and forms a silver THX logo. Then, the environment fades to black as a shimmering blue rectangle is drawn clockwise around it (like a laser). The logo fades out as the URL fades in.


  • There is an early variant where the THX web address is absent.
  • On some releases, after the THX logo fades out, the text "Digitally Mastered for Optimal Audio and Video Performance" (from the Broadway trailer) appears in the blue line. At one point from 2001 (when Lucasfilm still owned it), "Lucasfilm Ltd." was seen (exactly the way it was in the 1995 Broadway variant) above the THX logo.
  • On the DVD release of Terminator 2, the metallic rectangle with the T2 logo carved out appears, zooming toward us. Then, the rectangle gets blown by T-800 with the shotgun, as seen on the reflection. Pieces turn into T-1000 liquid metal and forms the THX logo. After that, the THX logo fades out, and then it contains a message reading "The Best Sound, The Best Picture. You're Watching a THX Certified Feature" appears one by one as each text fades out before the other. Also, the Deep Note in this variant (the Terminator 2 variant) is the same as Broadway 2000 version. This is also on the Blu-ray release with some differences: the THX logo fades into the standard logo, the "DIGITALLY" and "MASTERED" (a la Broadway '95) are replaced with "CERTIFIED," and URL with a copyright notice appears. This is the basis of Cavlacade. It appears on the Ultimate, eXtreme and Skynet editions of this film.
  • On the DVDs of The Final Countdown, Fox Demo Disc #1, and The THX Ultimate Demo Disc, the logo fades out before we get to the "Digitally Mastered for Optimal Audio and Video Performance" text.

10th logo (2001, 2003-late 2000s)

The THX logo starts up like any other, but just as the Deep Note is about to get loud, the logo suddenly crashes down revealing Shrek and Donkey creating the Deep Note with many instruments. The two look at the screen (with Shrek also nervously saying "Uh-oh..."), before looking at each other and smiling awkwardly as they raise the logo (apparently made out of cardboard) up. The Deep Note starts again (albeit less louder than before) and the logo shimmers in green from left to right. While the Deep Note is playing, Donkey comes out and plays a kazoo over the last few seconds. Shrek yells "Donkey!" at him, and as Donkey mutters "Okay, okay! Chill, Shrek..." the two walk off-screen. The screen fades to black as the words "illuminate your senses" fades in on the top and shines, a smaller THX logo in the middle, and copyright info on the bottom.

11th logo (2003-2006)

On a black background we see out-of-focus movie clips on a THX logo. Some of these clips include Star Wars: Episode I, Alien and Jurassic Park. The logo then starts to shine as the blue outline from the Broadway trailer appears around the screen and the words "CERTIFIED CINEMA" appear under the THX logo. Everything except the blue outline fades out and is replaced by the THX website URL on the top, copyright notices on the bottom and the phase "20 Years of Making Great Movies Come Alive."

12th logo (2005-early 2010s)

We first see a pitch black screen, but then we see the words "THE SCIENCE OF SENSATION" (in capital letters) coming at us each two words at a time (like the "Broadway 2000" trailer) and as a faint shine appears on the 'O', the words suddenly fade out by spreading apart. Then, the THX logo and the text "CERTIFIED CINEMA" appears, with a faint shine where the 'O' used to be. The logo shines with a "shinemark" coming down on the "T". WWW.THX.COM and the copyright at the bottom appear.


  • A 4:3 version is used on full-screen DVDs and the UK VHS of Star Wars: Episode III – Revenge of the Sith.
  • The UK VHS of the above simply shows "CERTIFIED" under THX.
  • Certified DVDs show "CERTIFIED DVD" under THX.

13th logo (2006-early 2010s)

On a black background, we see the metallic outlines of the THX logo fade in. Then the shiny silver color fades inside the THX logo. The THX logo glows and makes a big shine with some sparkles. Then below the THX logo is the disclaimer: "THX and the THX logo are trademarks of THX Ltd., which may be registered in some jurisdictions. All Rights Reserved."

14th logo (2006)

On a gray background, we see a clapperboard on screen. The clapperboard claps, and then disappears off-screen. The camera then zooms out and turns, revealing the background to be a gray BMW car with the iconic "kidney grille". Tex flies on screen and stops in front of the car, giving a "stop" signal. Tex then tries to fly away, but ends up getting sucked into the car. He gets flung around the car's engine uncontrollably, and is eventually able to stop and regain his balance. He then looks up, and sees part of the engine spraying. After spraying for a few seconds, it explodes, and Tex gets covered in black ash. Another part of the engine then pushes Tex up, and he gets chased by another explosion. He manages to escape from the car just in time, but then he loses control, and hits the THX logo off-screen. He then stands back up, shakes his arms and foot, looks back at the THX logo, and does a "Ta-dah!" pose. A copyright notice fades in and out on the bottom right.

15th logo (2007-2012)

We start out with an octagon shape figure rising out of liquid (a la a ripple effect), and forms into another figure, which looks like petals from a flower (in fact is a blue passion flower) because we're looking at it from the top. Inside the "flower" is a crown shape figure that has wings on top of it, slowly spinning around, producing the held organ note sound, as we zoom in on it. Then, the scene changes. We now see another set of wings that also spin around, but faster. A ring is spinning around with it and goes down towards the bottom of the screen, producing the buzzer. And the scene changes again. The same set of wings from the first scene is shown, once again spinning slowly, with shades seen on the left side of the screen. As the scene changes again, a tulip is seen zooming in towards us as it opens up it's front, producing the deep brass sound. Then we zoom in on a mushroom as it bumps up a bit and makes drum beats. Then a set of butterflies fly by (with some stopping in front center of the screen), producing some flapping sound, we see the flowerhead-like plant with dragonfly wings as petals, it pushes one-by-one clockwise, making dolphin chirping sounds, then we a lotus seed head opening and closing its holes as it makes a melody played on glockenspiel. Intact with the drumbeats of the jingle, we see a variety of mushrooms as they "beat" and bump up the the drumbeats, and then the scene changes to swirly-like circles which vibrate, as we zoom from one to another, making the bass horn stab. We zoom into another tulip, making another deep brass sound, and suddenly, we fly over all of the above mentioned items. As the camera tilts toward the front and zooms back, we see the plant-covered structure evolve to the THX logo. This version looks slightly (but also noticeably) different than the other trailers of the past. The text zooms back.

16th logo (2008)

On a black background, we see this odd speck that talks in a familiar voice to Horton (from Horton Hears a Who). It turns out to be the mayor impersonating him. Then, the mayor says "Kinda losing ya", causing Horton to drop the THX logo, and he shouts "How about this? I've got him real close! Can you read me?" knocking the mayor off-screen, then followed by the Deep Note. Horton then turns to the audience, winks and then goes off-screen. The THX logo shines as usual. Then the screen transitions to a message reading "THE AUDIENCE IS HEARING" (spoofing the "The Audience is Listening" motto, with "HEAR" in the same font as the movie). On the side of the screen we see the mayor peek out of the side of the screen, with his clothes blowing.

17th logo (2010-2012)

On a deep cloudy background, we see a light tunnel of many colors as well as a shadow in the distance. The shadow then emerges to reveal a silver and shining THX logo as well as a crystal blue rectangle outline from the Broadway trailers, which zoom slowly at us. A small copyright notice is seen below the THX logo.

18th logo (2012)

On a black background, we see a blue trail of light fly around. It flies to an atmosphere with a purple hue. A pink, blue, purple, and green trail of light follows the blue trail and flies around with it. We then see a closeup shot of the two trails of light flying. The multicolored trail of light makes some shapes with its light, while the blue trail flies around the shapes and makes some mini shockwaves. We then cut to a white background but is revealed to be the back of the blue trail of light in the purple atmosphere. The multicolored trail of light joins the blue trail and the two trails fly towards the THX logo, which is seen in the distance. Everything is in slow motion for a split-second, and then the two trails quickly charge towards the THX logo and reveal it. This version looks noticeably different than the other trailers of the past.The THX logo shines as the two trails of light into the bottom line of the logo and cause a bright light to appear. This bright light takes up the entire screen.

19th logo (2015-)

We start off in a shooting starfield. Then, a large black eclipse fades in, glows and spins. Then, many shiny white/black sticks and veins appear all over the eclipse, representing the iris of the human eye, and we zoom further into it as the sticks and veins move around and form in different ways. Suddenly, a large shock wave appears in the middle and we zoom through it, revealing the THX logo, which is black and has dark shines on it. The text "see you on the other side" wipes in underneath the THX logo.


  • There is also a longer 45-second version in which some of the sticks and veins move around slower, and we zoom through the large ring faster. It can be seen here.
  • There's an even longer 60-second version.
  • A 4K resolution version exists.
  • With Razer's acquisition of THX, a few modifications were made to this trailer. First, we see the text "THX IS EVOLVING" fade in at the beginning of the logo. A few seconds later the text fades out. Another line of text fades in, this time saying "HELLO". Below is Razer's print logo. After the text fades out the trailer continues as normal until the THX logo zooms in to the screen. The text "CERTIFIED BY" wipes in above the logo. The "see you on the other side" slogan wordmark is omitted and the copyright notice fades in during the logo and not after the logo.

20th logo (2015-late 2010s)

On a black background, we see either one of these:

  • On normal displays, their slogan "The Audience is Listening" appears.
  • On 4K displays, the THX 4K Display logo fades in.

Then either object disappears by sliding to the right. The background becomes black-gray-green gradient. A black line with blue marks slides to the right of the screen and starts to gently shake. It becomes liquid and breaks up into small circles. We zoom through the liquid. Multiple grouped lines start swirling around in a circular motion, then forms into a 4-layered sphere, hence the nickname. A blue glow surrounds the sphere. It becomes liquid and opens up, revealing blue electric lines. It later explodes to fill the background with black, then zooms out in the form of the THX logo. It later fills up with metallic material, making it look normal. Some of the blue lines remain, then later disappear completely. Finally, either one of these appear below.


  • 2 copyright notices "THX and the Deep Note sound are trademarks of THX Ltd. registered in certain jurisdictions. All rights reserved." "This THX trailer is the property of THX Ltd. All rights reserved".
  • At the end of the "making of" video, showing the process of mixing the logo to a 7.1 sound format, the words "see you on the other side" appear bellow the logo.

21st logo (2019-)

A large purple smoke cloud explodes on the screen, and the camera zooms out to reveal a nebula. We continue to zoom out through the space-like background as a mountain range appears below. The mountains then appear reflected in a waterdrop on a dragonfly's wings. The dragonfly beats its wings in slow-motion clearing the waterdrops, and flies through a new background, featuring some plants that appeared in the "Amazing Life" trailer. The camera dips down into a pool of water and emerges to reveal a city at night, as a helicopter flies past. The city is revealed to be inside a snowglobe on a table of various items. The camera pans back to reveal two similar tables with blue holographic domes on them. Then, Tex appears from the left and flies to a table in the front and loads up a similar holographic dome over the table and flies off. The camera continues to zoom out, revealing that Tex is aboard a star cruiser of some sort. The ship makes a light-speed jump, and the camera pans through the space station the ship was docked at. It is then revealed that the space station is in the shape of the THX logo, which becomes a more traditional silver color. The space background fades to blue, and then everything gradually fades out.

22nd logo (2020-)

In a glassy room in the same spaceship from "THX Genesis" Tex and a drone (Bob) attempt to place an orb in a socket, they are in front of a window with a floating THX logo in the background, They fight over who gets to put the orb in, the orb flies through the room and both chase it, causing the camera to fall, tex places the camera back into position, they compromise and Tex lets the drone slam dunk the orb into the socket, this causes the THX logo to power up and light up, both robots move to the side as the camera zooms up to the THX logo, we fade to the THX print logo, the text "SPATIAL AUDIO" fades underneath it.


A synthesized crescendo sound effect known as "Deep Note". It starts off with a group of 30 descending synthesized voices reminiscent of the sound of an airplane flying. Each voice moves slowly and randomly in a frequency sweep between 200hz and 400hz. This part of the Deep Note then repeats, and eventually the voices proceed to their target notes, a drastic change of three octaves. The lower notes grow deeper, and the higher voices grow more shrill, becoming an ascending dramatic sound until the sounds stop in one pitch. Three voices are heard per note, slightly detuned. Two more voices are heard in the bass. It was coded by James Andy Moorer. The version available online (via THX) has a noticeable audio dropout at 0:23.

  • The theatrical version uses a louder version of the Deep Note which excludes the looped portion of the beginning.
  • The DVD/VHS/LaserDisc version has a shorter and quicker version of the Deep Note that starts at the rapid pitch change. The VHS and most of the LaserDisc versions have a +2/higher-pitched (E note) Deep Note, which was stolen for Laser Video Russia's 3rd logo. The DVD version has a -1.5/lower-pitched (C♯ note) version that is often re-used in some of the future logos listed below. On THX-certified PAL releases (namely UK VHS tapes, but also including video CDs using THX-Certified masters from PAL VHS tapes), the VHS variant is at a higher pitch (+3, at an F note).
  • The HD version, or "Broadway Classic (Restored)," has the remastered Deep Note used in the "Science of Sensation" logo
  • The 2000 UK DVD of Aliens has the +1 PAL pitch version of the -1.5 DVD Deep Note.

  • On early prints, an orchestra warms up, then a big descending synth note followed by an orchestra crescendo. When the THX logo appears the descending synth is played again,followed by a rising string note for the THX logo, representing the Deep Note.
  • After some theatres complained about the above music messing up their speakers, it was being replaced with a new orchestral piece done by James Horner. We hear an orchestra warm up at the start, then a rousing orchestral cue with some whistling sounds (not in the original version of WOW! except for the 2002 & Vimeo releases), and then a beautiful composition of twinkles and ascending notes when the THX logo appears (representing the Deep Note). A whoosh is heard as the THX logo zooms in (not in the original version of WOW!), followed by twinkles. This music debuted in the Cimarron trailer shown at the end of the THX WOW! (1990) LaserDisc.
  • The LaserDisc variant has thunder and a shorter version of the Dolby remix music and sounds.

Some chimes and wind howling. When the background opens, wind whistles, then various ascending notes and sounds, until a Star Wars laser-gun sound and a whooshing sound occur as the THX logo appears and ends with a choir-like version of the Deep Note. The sound for this trailer was apparently created at Skywalker Sound and, according to The THX Ultimate Demo Disc, designed by David Slusser and Marco d'Ambrosio.

The atmosphere, dialogue, and the Deep Note.

The Deep Note in -1.5 lower pitch (from the Broadway DVD variant), Tex's dialogue, and sounds corresponding to the animation. The sound design is by Gary Rydstrom, according to The THX Ultimate Demo Disc. See "Trailer" for the rest.

Same as the previous trailer, except the Deep Note is replaced by cows mooing it (if you really listen carefully, a high pitched voice is heard towards the end of the mooing, which sounds like someone yelling "STOP!" before the sound of rumbling and cracking). The sound design is by Gary Rydstrom and Marco d'Ambrosio (who did the cow chord) according to The THX Ultimate Demo Disc. A variant of the Monster THX logo (website intro only) uses some electrical sounds from the Terminator 2 THX trailer, of which Gary Rydstrom also did the sound design.

Music/Sound Variant

On some releases, the logo is slightly louder, and more mooing sounds are added in, and the moo noise heard at the end is heard later.

A shorter version of the Deep Note that begins right before the rapid pitch change. However, new voices are added to the Deep Note and drown out most of the original voices except for the lower ones.

Thunderclaps/electric shocking sounds, followed by glass shattering, then the Deep Note. A laser-like sound is heard as the rectangle is formed. It also can be heard in PAL pitch if you have a PAL DVD with this logo.

Music/Sounds Variant

In the T2 variant, music from Terminator 2 is heard which fades into the Deep Note used in Broadway 2000; the sound design and mix is by Gary Rydstrom at Skywalker Sound according to the credits of the T2 Ultimate Edition DVD.

The Deep Note (the descending part at first with it falling over), the instruments, and the dialogue.

In this order, sound/dialogue clips from the following movies are heard:

  • Apocalypse Now Redux
  • Jurassic Park *1 *2
  • Die Hard *2
  • Jurassic Park(again) *1 *2
  • Nightmare on Elm Street *2 (LD)
  • Star Wars: Episode I *1 *2
  • Fight Club *1 *2
  • Alien *2
  • Star Wars: Episode I(again) *1 *2
  • Pulp Fiction *2 (LD)
  • Back To The Future trilogy
  • Lord of The Rings trilogy *1
  • The Fast and the Furious
  • Speed *1 *2After this the THX Deep Note starts playing as the final sound clips play from:
  • Alien(again) *2
  • Ghost
  • The Mask *2 (LD)Sound Design was by Gary Rydstrom and Steve Boeddeker of Skywalker Sound. *1 denotes Skysound title *2 denotes THX-certified title

A remastered Deep Note, some shining sounds, and whooshes. In this remastered Deep Note, some voices are reminiscent of the newer ones from the Broadway 2000 version, and some of the voices reach their final pitches before the others do.

The -1.5/low-pitched Deep Note from Tex and Broadway (DVD variant) trailers.

A guy saying "And...action!" when the clapperboard is on screen, Tex's voice, some car sounds and other sound effects, and the -1.5/low-pitched Deep Note from before.

A variety of instruments playing in sync with each plant, performed by Lost in the Sky. This ends with a less noisy version of the Deep Note, accompanied by the swoosh. Unlike the previous THX trailers, the music starts at the ending note (blended into the background instrumentation at first) and comes to a quick end rather than fading out smoothly. Mixed by Gary A. Rizzo at Skywalker Sound.

The characters talking, sound effects corresponding to the animation, and the Deep Note.

The 2005 Deep Note.

Sound effects accompanying the atmosphere, followed by the Deep Note.

A redone version of the Deep Note, also done by James Andy Moorer. It sounds more synthesized than before, and is even louder than before. It starts off with the synths ascending and descending over and over again until they rapidly change their pitches. During the rapid pitch change, the clashing pitches of the lower synths cause a "rumbling" sound as the Deep Note gets louder, and the final pitch gets louder and louder as more and more synths join them at the final chord. The highest synths on the final chord create a synth organ-like sound, while the lowest synths create a deep humming sound. Mixed by Lora Hirschberg (w/support from Gary Rydstrom?) at Skywalker Sound.

Music/Sounds Variant

In the longer versions, after the synths switch back and forth between ascending and descending, the louder synths are stretched out until the final chord.

First, the beginning half of the original Deep Note plays, then gets interrupted by whooshes, liquid sound effects, and a low synth note, followed by a choir. During the glow, the Deep Note resumes, followed by another whoosh, and an explosion.

Music/Sounds Variant

During the "making of" video, there was no Deep Note.

Sounds accompanying the environments, along with descending sounds invoking the Deep Note. When we start panning through the space station. we hear the 2005 Deep Note, with multiple stop-starts during the early stages. The stop-starts get faster and faster until the Deep Note converges into a single sound.

Whirring of the flying drones, pinging, balls flying and hitting things, Robot grunts a slammimg noise and then the Deep Note (-1.5/low-pitched as heard on DVD, Tex, Ziegfeld, and Tex 3).

Scare Factor

1st logo

Medium to high, because of the dark atmosphere and the Deep Note. This has been known to cause a fear of the THX logo and the Deep Note dubbed by logo fans as "THX phobia". It only got worse from here, though...

2nd logo

  • Theatrical/Dell variants: Medium to high, due to the dark atmosphere and the Deep Note.
  • Stargate and Species LaserDisc variant: Low to medium. The shorter Deep Note in the logo sounds a little tamer due to being more like the theatrical version. It starts out much quieter too, like the DVD variant.
  • VHS/LaserDisc variants: High to nightmare, thanks to the quicker, higher-pitched and louder Deep Note. Additional factors include audio quality if the VHS is damaged because of this situation, and sudden appearance after being seen after any miscellaneous logo/bumper, format screen, promo, etc. Paramount LaserDiscs start out with this logo. The sudden fading transition from the Elite Entertainment logo to the THX logo on the 1994 LaserDisc of Night of The Living Dead could raise the scare factor as a logo usually fades to a black screen. Possibly even higher if people can find the remote and mute the TV as it comes on at any time, especially with the darker atmosphere. Despite these factors and the chilling Deep Note, some people have recognition with this variant, especially on Disney or Fox VHS tapes.
  • Video CD/UK VHS variants: Nightmare to off the scale. The even higher pitched, more chilling than ever Deep Note will definitely haunt many first-time and unexpected viewers. It really doesn't help when it comes out of nowhere, either, after a video piracy warning, warning screen, trailer, promo or even a format screen like the VHS variant.
  • DVD/Apollo 13LaserDisc variants: Low to medium. The Deep Note is a little tamer and it starts out much quieter, but it still feels rather ominous.
  • Aliens UK DVD Variant: Low to high, due to the slightly higher Deep Note some wouldn't expect.

Nevertheless, this trailer is very popular and is a favorite of many, especially for nostalgic purposes, like with the VHS variant.

3rd logo

Depending on the variant:

  • Dolby Digital variant: Low to medium. The dark atmosphere and giant THX logo flying towards the screen, along with the thunder sound in the LaserDisc variant, could raise up the scare factor a little, but the incredible animation and music has made this a favorite of many.
  • With the original music: Medium to high, since the jarring soundtrack of the wormhole may startle viewers.

4th logo

Low to medium. The sounds can catch you off-guard, and the dated red background can be an eyesore to some, but the Deep Note sounds much more calmer on this trailer. This is also a favorite of many.

5th logo

Low to high, because of the Deep Note and subject matter (the exploding head doesn't help), but it's a hilarious trailer and a favorite of Simpsons fans.

6th logo

Low to medium. We still have the Deep Note, but it's intended to be funny, and is a favorite of many, especially among the Pixar crowd.

7th logo

None, unless you have THX-phobia or are scared of Tex. The actual Deep Note isn't there and it's meant to be funny. It’s yet again a favorite of many, including Pixar’s fanbase.

8th logo

Medium to high, because of the dark atmosphere and the Deep Note. Not much when compared to what's next, though...

9th logo

Low to nightmare. The sphere shattering, in addition to the ominous atmosphere and the Deep Note will certainly scare people. People with THX-phobia or a fear of thunderstorms probably shouldn't watch this in the dark at all. Nevertheless, it’s another favorite of many.

10th logo

Low to medium. The Deep Note's presence is still ominous, but it's a hilarious trailer, and might also be a favorite among Shrek's parodic "Brogre" fandom.

11th logo

Medium to high. Again, it can cause THX-phobia.

12th logo

Medium to nightmare, because of the long, dark atmosphere and the Deep Note, which might unsettle more than a few people, especially if it comes out of nowhere. High to nightmare for the PAL variant, as the high-toned Deep Note makes it worse, and appearing after a static black screen (along with possible video hiss) on the UK VHS of Revenge Of The Sith doesn't help either. What also doesn't help is that it's the very first thing that pops on on said VHS so it can catch some off-guard.

13th logo

Medium to high, due to the flashing atmosphere and the Deep Note. Can catch people of guard if they weren't expecting this logo, since it comes without warning.

14th logo

Low to medium. Like the 6th trailer, it's intended to be funny but it can scare those with "THXphobia." And again, it may be a favorite among the Pixar crowd.

15th logo

Low to high, once again, may be even higher for those that have trypophobia (fear of holes), although some with THX phobia might even like this one for its wonderful animation and somewhat tame Deep Note.

16th logo

Medium to high. The "CRASH!" sound and the Deep Note might startle a more than few viewers, but it's intended to be funny.

17th logo

Medium to high. This trailer may cause "THX phobia" which could worsen now that it's in 3D. Admittedly, however, the bright lights call a lot of attention to the logo unlike many of the black-background THX trailers.

18th logo

Low to high, due to the accompanied sound effects, atmosphere, and Deep Note. However, the colours and wisps make it a lot tamer. Still not much compared to the next trailer...

19th logo

High to nightmare for the 30 and 45-second variations and nightmare for the 60-second variation. The even louder Deep Note and especially the darkness can cause scares for many. However, the scare factor is lower for those used to it, and it's otherwise a very excellently-animated and scored logo.

20th logo

Medium to high. The animation, sounds and the Deep Note can startle more than a few, but they're wonderful otherwise and better than before. Low for the "Making Of" variant, as the absence of the Deep Note makes this a lot tamer.

21st logo

Low to medium (of course, higher if you have THXphobia). We still have the deep note here, and the closeups and vortex at the start might also scare some. Otherwise, this is a great trailer by THX, thanks to the CGI and the references to "Amazing Life" and the appearance of Tex.

22nd logo

Low to medium. Again, the Deep Note is still present, but it's also quite a humorous logo. It's also a good logo for spatial audio.


  • Additionally, the THX logo also has gotten its own nicknames, such as "The loudest noise of your childhood", "The Deep Note", "That One Loud Logo That Appears Before Several of Your Favourite Movies" and "Your Childhood's Worst Nightmare Before the Movie Starts".
  • In addition, it is also considered as one of the loudest logos, along with Colombiana de Television, Amaco Productions, Ismail Productions, DTS and Ramsay Films, but considering that they're a sound system company, this was all intentional.
    • The Deep Note is also supposed to let the audience know that the movie's sound is in the highest quality available, although it can unintentionally scare many people, especially kids and THXphobics.
  • It's also well known to have its own parodies, such as from The Simpsons (from the episode Burn's Heir), Tiny Toon Adventures (known as "THUD") and even Bluey (which was named "BRM")
    • Adding to that, THX even liked the Simpsons THX gag and made into a real trailer.


CAUTION: Do not watch the Amazing Life logo if you have trytophobia (which is a fear of holes

Warning: don't watch the cavalcade logo if you scared of lightning

warning: these logos are loud so turn down your volume

Dream variants

1st logo

There is a digitally mastered variant with the digitaly mastered text in arial, the text on the thx logo can be lucasfilm above only or digitally mastered. after, the best sound best picture text from grand or cavalcade appears. a copyright notice appears below.

there is an DELL version where your dell pc is thx certified appears, then best picture. best sound., then the lucasfilm above logo.

on laserdiscs, the mastered and duplicated text appears, then the [ LASER |/ DISC ] box appears in blue under the thx logo.

on VHS, it uses the digitally mastered version.

There is a remastered version where the text is in arial and the thx logo is the coparate one in blue, shining. a copyright notice appears in blue below.

There is a bluray version where the logo is hd and certified is under the logo. after, the URL appears.

2nd logo

There is a DELL version of the hd version where the text from the old version appears, and the URL fades in along with the copyright notice.

there is a combo version with the 3rd logo.

3rd logo

there is a short wersion starting with the 3d thx logo. then the broadway thx logo appears in a silver rectangle. then the end text appears on a black background.

the combo version with the 2nd logo starts in space, where the adiorum text from grand appears, then we fly backwards through the vortex, then the conductor puts down his baton. then we zoom in on a box as it turns into a blue outline, then it acts like broadway. the end text appears on a black background.

there is a bluray version that starts like the short version, but the digitally mastered text appears at the begining.

on dvds, the digitally mastered text appears on the 2d logo.

there is a DELL version where the begining text is replased by your dell pc is thx certified. after, the best picture best sound text appears, followed by the URL.

4th logo

there is a digitally mastered version where he adiorum text is replaced by the digitally mastered text.

there is a laserdisc version where the background quickly turns blue, and after the thx logo appears, the background fades to black as the broadway rectangle appears, and [LASER|/DISC] is under the logo.

there is an enhanced version where the real deep note is here, the auduience is listening zooms in, and the thx logo appears in the broadway rectangle.