Subwoofer

These claims are scientifically disputed and unresolved as of yet. With seconds to go and the prisoners down by five points, the ball is in the prisoners' possession on the guards' one-yard line, the "longest yard" of the title. They further claim that Kicker's square design puts too much stress on the corners of the cones. However, by this time the prisoners have rallied and their spirit cannot be broken. Sony claims that its pentagon shape reduces standing waves on the surface of the cone as well as improves the overall strength of the cone structure, reducing "cone flex". Nate, despite his bad knee, goes into the game to score a touchdown, and, after doing so, is immediately cut down at the knees by a guard, crippling him. The intent of the triangular design does not seem to be motivated by sound quality or intensity, but rather to encourage creativity in installation and provide flexibility for otherwise awkward positions. However, he quickly wins them back and, with the help of a quick touchdown and a drop kick, soon gets the "Mean Machine" back into the game.

However, a triangular design decreases the surface area of the woofer cone relative to a circular or square design in an enclosure of the same size. At first, the prisoners are angry with Crewe and provide him with no protection or aid. The increased surface area translates into moving more air and higher sound pressure levels. Pop states that, for himself at least, it was worth it, and Crewe goes back into the game with a renewed sense of purpose. In enclosures of the same size, it is possible to achieve more subwoofer cone surface area with a square design than a circular design. At this point, a stunned Crewe turns to Pop to ask him if it was worth it - trading the opportunity to strike the warden in exchange for a life sentence. The intent of a square subwoofer is to increase the surface area of the woofer's cone. With the prisoners demoralized, the guards as orderd take out their anger on the prisoners, causing several injuries.

However, they can be useful in creating unique 'looks' in a car audio system that is meant to be seen as much as heard, and to create brand distinction and recognition. Crewe quickly makes several deliberate mistakes putting the "Mean Machine" down by three touchdowns, then purposely takes himself out of the game. There is no known auditory advantage to these shapes. Will Knauer (Ed Lauter) to order his players to "inflict as much physical punishment on the prisoners as possible" as soon as they are ahead by 21 points. Other companies, such as Sony, have jumped on the bandwagon, producing non-round subwoofers of their own. However, the conniving warden secretly breaks this promise, telling the leader of the guards' team, Capt. Xtant has introduced a hexagonal subwoofer. Crewe obtains a promise from Hazen that if he cooperates and throws the game as ordered, the prisoners will not be harmed.

Bazooka has introduced a triangular subwoofer. He corners Crewe in the team locker room and says that the arsonist will testify Crewe had been an accessory to Caretaker's murder if the prisoners do not lose the game by at least 21 points. Stillwater Designs, nicknamed Kicker, released a square subwoofer several years ago, the Solo-Baric series, and recently, the Solo X. Hazen has always believed he must rule by fear, brutality and intimidation. Within the last few years, the car audio field has seen a variety of subwoofers utilizing non-round shapes. However, Warden Hazen is angry the prisoners have gained a newfound sense of self-respect, teamwork and accomplishment and are in a good position to win the game. Some waterproof models work underwater, or placed on the underside of a deck, to create sound. As the game starts, the "Mean Machine" does well, and at halftime the game is close.

They can be placed on a large flat surface create a large, though poor, loudspeaker. Unfortunately, the trap is accidentally sprung on Caretaker instead, who is killed in the blaze. These devices typically don't provide as much vibration per dollar as simply placing a reasonably priced subwoofer against the back of the furniture, so at their current prices are most useful for not disturbing anyone than vibrating to audio. However, before the game, a jealous homosexual arsonist named Unger (Charles Tyner) schemes to kill Crewe by setting off an incendiary device in his cell. However, some feel that the vibrations are a little disembodied from the rest of the auditory experience. With the help of the clever Caretaker, veteran former pro player Nate Scarboro (Michael Conrad), "Granny" Granville (Harry Caesar) and long term prisoner Pop (John Steadman) who remains prison far past his original sentence for having struck Warden Hazen when the warden was just a rookie guard, as well as being aided by the warden's amorous secretary, Crewe molds the otherwise violent, distrustful, rebellious men into a smoothly working football team which comes to be named the "Mean Machine". These have recently emerged as a device, called a tactile transducer by at least one brand, that attaches to furniture, such as one's seat, via which vibrations are transmitted to the body; they can be connected to an amplifier as per a normal loudspeaker. Among the most impressive are Samson (Richard Kiel), a huge prisoner and former professional weightlifter and Connie Shokner (Robert Tessier), a fearsome serial killer and martial arts expert.

Since much bass is felt, sub-bass can be augmented using tactile transducers. However, he builds trust amongst the cons, and all of them, including the black inmates, eventually come out to support Crewe and his cause. Indeed, hearing loss is one concern, alongside space considerations and neighbour relations. Many other prisoners are skeptical too mainly because they see it as an opportunity for the guards to beat on them harder and they are skeptical of Crewe for selling out his NFL teammates. Such "SPL wars" have drawn much attention to subwoofers in general, but subjective competitions of sound quality ("SQ") has not gained similar popularity. Adding to the difficulties, the black inmates at first refuse to play for they "no longer play ball for the Honkie's amusement" and want nothing to do with the white inmates who are playing. Naturally, these sound levels are not safe for humans. Crewe finds difficulties however because several of the people inside the prison have no football experience, and he has no idea if the prisoners have enough talent to take on the guards.

In international car stereo competitions, over 100 subwoofers driven by some 100,000 watts have been used to generate over 180 decibels. He is allowed to recruit the most dangerous and violent prisoners. Curiously, some car stereo enthusiasts seem intent on producing ultra-high sound pressure levels in the confines of their vehicle's cabin. Eventually, under pressure, Crewe relents and agrees to form a prisoner team to play the guards' team in an exhibition game. Typically, subwoofers are installed in the trunk. The guards at this prison are also very different from those at other prisons in that they are all big and fast enough to make an NFL roster. The automobile is ideal for the "hidden" subwoofer approach due to space limitations of locations such as doors (ignoring the acoustic problems of a car interior). You could have robbed banks, sold dope or stole your grandma's pension checks and none of us would have minded, but shaving points on a football game, well that's un-American!" Moreover, the sadistic, power-hungry warden Rudolph Hazen, (Eddie Albert), a football fanatic who operates a semi-pro team made up of the prison's guard force, wants Crewe to form an inmates' team, but Crewe refuses and is harassed by the guards and given backbreaking work as punishment.

All of these subwoofers tend to have in-built amplification. You on the other hand, had it all and threw it away. These can be purchased separately, to be added to an existent system or when considering a set of speakers; or as part of a high-end speaker package. As his only friend, an inmate nicknamed Caretaker (James Hampton) put it, "Most of these boys have nothin', never had anything to start with. On the other hand, high-end domestic subwoofers are manufactured by companies such as M&K, HSU, Velodyne, SVS, and REL. The convicts despise him because he was caught point shaving, the reason he was dismissed from the league. Further, small satellites systems typically cross over the bass above 90 Hz, introducing the subwoofer "localization effect". He has difficulty getting along with the guards as well as with his fellow inmates.

They are too weak to play any real deep bass. After a fight with her, he gets drunk and steals and then wrecks her expensive Maserati car (the car in the film is a Citroen SM; Citroen owned Maserati back in the 1970s), crimes landing him in prison for a 3 - 5 year sentence. Most multimedia "subwoofers" should probably have been called "woofers". The protagonist is Paul "Wrecking" Crewe (Burt Reynolds), former star pro football quarterback living with his wealthy girlfriend in Palm Beach, Florida. Particularly among low cost systems, however, it may be little more than a marketing device: it's not likely that a small woofer in a compact cabinet will have better bass performance than good speakers; as mentioned, the term "subwoofer" is no guarantee of particular bass performance. Green Bay Packers legend Ray Nitschke appeared in the 1974 version. The physically separate subwoofer/satellite arrangement has been popularised by lifestyle systems, such as those manufactured by Bose, and multimedia speakers, examples of which include the Klipsch ProMedia. The 1974 original was also the basis for the 2001 movie Mean Machine, starring Vinnie Jones as Danny Meehan, based on the character of Paul Crewe, and featuring Soccer instead of American football.

("Bass management" or "Small" mode for the satellite speakers is common among equipment such as Dolby Digital surround processors/receivers.). Burt Reynolds played the hero, Paul 'Wrecking' Crewe in the original, and the coach Nate Scarboro in the 2005 remake starring Adam Sandler, Chris Brown, and Nelly. All low frequency information is sent to the subwoofer. The Longest Yard was a 1974 movie about inmates at a prison who play American football against their guards. Note that only one subwoofer need be used, even when using 5 or more satellite speakers—e.g., for surround sound.
. Harmonics at higher frequencies (from the satellites) can then be used, by the auditory system, to calculate the directional information. "I think I broke his freakin' neck!" - Samson after clotheslining one of the guards.

(e.g., it has been suggested subwoofer(s) be placed in the corner of the room, far from large room openings, and closer to the listener.) This is possible since low bass frequencies have a long wavelength; hence there is little difference between the information reaching our left and right ears, and we are unable to easily locate their direction below 90 Hz. Let's do it!'" - Paul 'Wrecking' Crewe in the huddle for the last play. Physical separation of subwoofer and "satellite" speakers not only enables placement in an inconspicuous location, but since sub-bass frequencies are particularly sensitive to location (e.g., due to room resonance and 'modes'), the best position of the subwoofer may not be where the "satellite" speakers are located. For Caretaker.. (e.g., some speakers include a subwoofer in the lower portion of the cabinet.). For Nate.. Thus, subwoofers may be part of a package that includes satellite speakers, purchased separately, or built into the cabinet of a conventional loudspeaker. "For Granny..

Rather, the intention may be to use small main ("satellite") speakers (of which there are 2 for stereo, and 5 or more for surround sound) and locate ("hide") the subwoofer elsewhere; to augment an existent speaker to relieve it of reproducing bass and gain output level and/or quality; or because high levels of low bass are required and using a dedicated amplifier and speaker provides the output level and quality required. A conventional woofer may reproduce frequencies up to 200, 300, or in a two-way speaker a mid-woofer (paired with a tweeter) also handles midrange, up to 3,000 hertz or more. It should be noted that a subwoofer does not necessarily provide superior bass performance to large conventional loudspeakers; they are merely subwoofers because they ought to reproduce only the lowest frequencies. Considering they operate outdoors and the average listener is hundreds or even thousands of feet away from the devices, they are impressive.

People who are accustomed to bass in home audio systems and car audio many times think that the subs in a concert PA system aren't putting out that much. On average, music applications generally require less capability than movie soundtracks in the very lowest octave, but modern popular music is changing this preconception and this is reflected in the design attention given to the subwoofer section of the PA system nowadays compared to a couple of decades ago. Pro Audio subs have to be capable of very high output levels – after all, concert venues may seat 10,000s of individuals outdoors. A large horn-loaded version called the BassTech-7 can be found in venues such as theme park rides.

Another extreme pro audio device is the ServoDrive ContraBass, where the driver's cone is moved using a belt-drive coupled servo motor. Intended for applications such as night club installations and concert sound reinforcement this cabinet is still popular with PA system equipment rental companies. A now-discontinued but popular Electro-Voice subwoofer employs a "Manifold Technology" configuration to fit four 18-inch drivers into a relatively compact enclosure. One of the most powerful subs manufactured can play as low as 25 Hz and can cover thousands of feet and uses two 12-inch woofers on a 13-foot (4 m) long folded horn (the EAW bh822e or KF940).

12-inch drivers in very large folded horns are also becoming popular now. For electronic music events with at least a thousand audience members there are often more than 20 double-18-inch cabinets on either side of the stage. They are usually direct radiating in a ported enclosure built of 13-ply birch. The 18-inch woofer driver is the primary majority device for pro audio applications.

Similar popular PA systems are made by JBL, Electro-Voice, EAW and Meyer Sound. Popular sub systems in use currently are made by companies such as EAW but usually the subs will be made by the manufacturer of the rest of the PA system such as L-Acoustics and their V-Dosc Line Array with its matching dual 18-inch sub cabinets. Many times the subs are not part of the entire sound mix but are specifically fed just kick drum, bass guitar and other low-frequency content from a separate output on the main mixing console. Similar systems are used in theme park rides, such as "Days of Thunder," which uses sound to simulate a physical impact.

This was simply a set of large sub-woofers designed to create infra-bass (felt but not heard). An unusual example of the use of sub-woofers came with the release of Earthquake in 1974 where they used a system called Sensurround to create a feeling of an earthquake. The bulk of the sound system is usually "flown" (suspended from the ceiling by chain hoists) and the subs are usually stacked on the stage or the ground in front of the stage to the left and right of the performance space. Large concert sound systems always use subwoofers (referred to as "subs" by the engineers and crew).

Note that movie theatre speakers (situated behind a perforated screen) typically use 15" drivers (woofers), so the use here is only to reproduce the lowest frequencies at high sound pressure levels. Some of these applications require subwoofers designed for very high sound levels, such as the JBL 4645 – certified for THX movie theatres – which uses an 18" driver (woofer). Subwoofers are found in professional applications such as live concerts, movie theatres, various other sound reinforcement applications (ranging from nightclubs to theme restaurants) and studios. This track is often used aggressively by mixing artists.

The .1 channel is usually dedicated to extended bass frequencies, for example, the low frequencies of a gunshot, string bass, or thunder. The need to reproduce these frequencies has increased since older formats, such as vinyl records, have been displaced by digital formats, such as CD, and particularly 5.1 formats such as Dolby Digital, in which the ".1" channel is dedicated solely to the subwoofer. Subwoofers are usually powered by a high power amplifier, and often an electronic crossover ensures that higher frequencies will not be directed to the subwoofer. Diameter tends to be advantageous because low frequencies involve shifting a great deal of air; a recent trend has been for high excursion, i.e., how far the cone can linearly travel from its resting position; for example, some can move as much as 2.5" in or out, yielding an overall displacement of 5" (this is controlled movement range).

Subwoofers use drivers (woofer) with cones typically coming in 10" or 12" sizes, but can be as large as 34", and as small as 4". . It is difficult for small loudspeakers to reproduce frequencies below 40 Hz, especially above 100 dB, and so it is often advantageous to use a loudspeaker dedicated to this task. So-called subwoofers which reproduce frequencies from about 35 Hz to about 150 Hz are more properly described as bass modules than true subwoofers.

Frequencies 16 Hz or lower are more felt than heard. A subwoofer is a loudspeaker which reproduces bass frequencies from about 5 Hz to about 90 Hz.