Subwoofer Wikipedia. A driver is commonly installed in an enclosure often a wooden cabinet to prevent the sound waves coming off the back to cancel out the sound waves being generated from the front of the subwoofer. A subwoofer or sub is a woofer, or a complete loudspeaker, which is dedicated to the reproduction of low pitched audio frequencies known as bass. The typical frequency range for a subwoofer is about 2. Hz for consumer products,1 below 1. Hz for professional live sound,2 and below 8. Hz in THX approved systems. Subwoofers are intended to augment the low frequency range of loudspeakers covering higher frequency bands. While the term subwoofer technically only refers to the speaker driver, in common parlance, the term often refers to a subwoofer driver mounted in a speaker enclosure cabinet. Subwoofers are made up of one or more woofers mounted in a loudspeaker enclosureoften made of woodcapable of withstanding air pressure while resisting deformation. Pro Subwoofer Design Software' title='Pro Subwoofer Design Software' />Subwoofer enclosures come in a variety of designs, including bass reflex with a port or vent, using a subwoofer and one or more passive radiator speakers in the enclosure, acoustic suspension sealed enclosure, infinite baffle, horn loaded, and bandpass designs, representing unique trade offs with respect to efficiency, low frequency range, cabinet size and cost. Passive subwoofers have a subwoofer driver and enclosure and they are powered by an external amplifier. Active subwoofers include a built in amplifier. The first subwoofers were developed in the 1. Subwoofers came into greater popular consciousness in the 1. Sensurround in movies such as Earthquake, which produced loud low frequency sounds through large subwoofers. With the advent of the compact cassette and the compact disc in the 1. As well, during the 1. DVDs were increasingly recorded with surround sound processes that included a low frequency effects LFE channel, which could be heard using the subwoofer in home theater systems. During the 1. 99. PA systems. By the 2. Historyedit. View of the underside of the downward firing Infinity Servo Statik 1, showing the size of the 1. This article originally appeared in the July, 2017 issue of Pro Sound News. Innovations is a monthly column where different pro audio manufacturers are invited to. Design software for solving the required calculations for building bandpass, sealed and vented speaker and subwoofer box designs. Build, plan and design your own. Find the JL Audio Subwoofer Systems at the official JL Audio site. Subwoofer box design software for building bandpass, vented, ported and sealed audio speaker enclosures, cabinets and boxes. Get the guaranteed best price on Powered Stage Subwoofers like the QSC KSub Powered Subwoofer at Musicians Friend. Get a low price and free shipping on thousands of. CSC Ceiling Speaker Configurator Software v2. Now includes 8138 Model CSC is a general sales estimation and engineering tool for selecting ceiling speakers. Free speaker design software allows easy variation of box dimensions to determine enclosure and port resonances. Also prints panel cutting size list. Requires that. Cerwin Vega driver in relation to a can of Diet Coke, to show scale. In September 1. 96. Raymon Dones, of El Cerrito, California, received US patent 3. Able to reproduce distortion free low frequencies down to 1. Hz, a specific objective of Dones invention was to provide portable sound enclosures capable of high fidelity reproduction of low frequency sound waves without giving an audible indication of the direction from which they emanate. Best Subwoofer Design SoftwareDones loudspeaker was marketed in the US under the trade name The Octavium6 from the early 1. The Octavium was utilized by several recording artists of that era, most notably the Grateful Dead, bassist Monk Montgomery, bassist Nathan East, and the Pointer Sisters. The Octavium speaker and Dones subwoofer technology was also utilized, in a few select theaters, to reproduce low pitch frequencies for the 1. Subwoofer Design Software Free' title='Subwoofer Design Software Free' />Aj Audio Subwoofer Design SoftwareEarthquake. During the late 1. Dones Octavium was favorably reviewed by audiophile publications including Hi Fi News and Audio Magazine. Another early subwoofer enclosure made for home and studio use was the separate bass speaker for the Servo Statik 1 by New Technology Enterprises. Designed as a prototype in 1. Arnold Nudell and airline pilot Cary Christie in Nudells garage, it used a second winding around a custom Cerwin Vega 1. Stereo Review. 7 In 1. Infinity. 7 The subwoofer was reviewed positively in Stereophile magazines winter 1. SS 1 by Infinity. The SS 1 received very good reviews in 1. High Fidelity magazine. A display of Cerwin Vega speaker enclosures at the 1. Audio Engineering Society meeting. Another of the early subwoofers was developed during the late 1. Ken Kreisel, the former president of the Miller Kreisel Sound Corporation in Los Angeles. When Kreisels business partner, Jonas Miller, who owned a high end audio store in Los Angeles, told Kreisel that some purchasers of the stores high end electrostatic speakers had complained about a lack of bass response in the electrostatics, Kreisel designed a powered woofer that would reproduce only those frequencies that were too low for the electrostatic speakers to convey. Infinitys full range electrostatic speaker system that was developed during the 1. The first use of a subwoofer in a recording session was in 1. Steely Dan album Pretzel Logic when recording engineer. Roger Nichols arranged for Kreisel to bring a prototype of his subwoofer to Village Recorders. Further design modifications were made by Kreisel over the next ten years, and in the 1. John P. DArcy record producer. Daniel Levitin served as a consultant and golden ears for the design of the crossover network used to partition the frequency spectrum so that the subwoofer would not attempt to reproduce frequencies too high for its effective range, and so that the main speakers would not need to handle frequencies too low for their effective range. Subwoofers received a great deal of publicity in 1. Earthquake which was released in Sensurround. Initially installed in 1. U. S. theaters, the Cerwin Vega Sensurround system used large subwoofers which were driven by racks of 5. Four of the subwoofers were positioned in front of the audience under or behind the film screen and two more were placed together at the rear of the audience on a platform. Powerful noise energy and loud rumbling in the range of 1. Hz to 1. 20 Hz was generated at the level of 1. BSPL. The new low frequency entertainment method helped the film become a box office success. More Sensurround systems were assembled and installed. By 1. 97. 6 there were almost 3. Sensurround systems leapfrogging through select theaters. Simcity Games No'>Simcity Games No. Other films to use the effect include the WW II naval battle epic Midway in 1. Rollercoaster in 1. Deep bass speakers were once an exotic commodity owned by audiophiles. By the mid 1. 99. For owners of 3. 3 rpm LPs and 4. Some hi fi aficionados solved the problem by using reel to reel tape players which were capable of delivering accurate, naturally deep bass from acoustic sources, or synthetic bass not found in nature. With the popular introduction of the compact cassette and the CD, it became possible to add more low frequency content to recordings, and satisfy a larger number of consumers. Home subwoofers grew in popularity, as they were easy to add to existing multimedia speaker setups and they were easy to position or hide. Construction and featureseditLoudspeaker and enclosure designedit. Cross section of a subwoofer drive unit. Subwoofers use speaker drivers woofers typically between 8 inch 2. Apache Tomcat Server For Netbeans. Some uncommon subwoofers use larger drivers, and single prototype subwoofers as large as 6. On the smaller end of the spectrum, subwoofer drivers as small as 4 inch 1. Small subwoofer drivers in the 4 inch range are typically used in small computer speaker systems and compact home theatre subwoofer cabinets. The size of the driver and number of drivers in a cabinet depends on the design of the loudspeaker enclosure, the size of the cabinet, the desired sound pressure level, the lowest frequency targeted and the level of permitted distortion. The most common subwoofer driver sizes used for sound reinforcement in nightclubs, raves and poprock concerts are 1. The largest available sound reinforcement subwoofers, 2. American Pie 6 Beta House Legendado. The efficiency of a speaker driver is given by 042. Fs. 3Vasc. 3Qes1.