of voxx international industry audio founded 1946 as klipsch and associates headquarters indianapolis indiana u.s. key people paul w. klipsch founder paul jacobs president products loudspeakers headphones website www.klipsch.com klipsch audio technologies kl p also referred to as klipsch speakers or klipsch group inc. is an american loudspeaker company based in indianapolis indiana . founded in hope arkansas in 1946 as klipsch and associates by paul w. klipsch the company produces loudspeaker drivers and enclosures as well as complete loudspeakers for high end high fidelity sound systems public address applications and personal computers . on january 6 2011 audiovox announced that the company had signed a term sheet to purchase all the shares of klipsch group inc . 1 the sale was completed march 1 2011 . 2 contents 1 horn loading 2 products 2.1 the klipschorn 2.2 other legacy speakers 2.3 current speakers 2.3.1 multi media speakers 2.3.2 klipsch used in theaters 2.4 headphones 2.5 other products 3 references 4 external links horn loading edit since its inception klipsch has promoted the use of horn loaded speakers as part of its goal to produce speakers which are high in efficiency more formally called sensitivity meaning that they can be driven by relatively low powered amplifiers are low in distortion which paul klipsch believed was very important 3 have wide dynamic range meaning that they accurately reproduce both soft and loud sounds exhibit controlled directivity meaning that the radiation pattern is directional rather than diffuse have a flat frequency response meaning that there is no unnatural emphasis in the bass mid range or treble . the company advocates the superiority of horns for the aforementioned properties but historically horns have a reputation for a coloring of the sound sometimes described as honkiness . the exact causes of this coloration are still being researched 4 5 but one cause is vibration of the horn material itself . early klipsch designs utilizing metal throated horns whose material could be energized by the sound within and ring or buzz . klipsch subsequently introduced horns of braced fiberglass which were said to alleviate resonances that colored the earlier metal designs . another cause of honkiness is acoustic resonances and reflections when the horn shape causes poor transitions in the acoustic wave expanding from the horn driver . in addition to the direct acoustic effects these resonances and reflections transform into peaks and dips in the electrical impedance making problems for the passive crossover network . in 1989 klipsch introduced a midrange horn with a tractrix flare which was said to reduce honkiness and create a more open sound quality compared to earlier designs . klipsch also moved away from silk diaphragms to different driver diaphragm materials like phenolic aluminum and titanium to inject a purer sound into the horn in the first place . midrange horns made entirely of formed wood were used into the 1950s . historically klipsch speakers were designed based on principles originating at bell labs in the 1930s . objectives included wide soundstage and frequency range from about 30 hz to 15 khz and the speakers were designed to be placed in a room with no single dimension a multiple of another . for competitors who disregarded this old research klipsch made a special bullshit button inspired by paul klipsch s extensive usage of the word . 6 7 products edit the klipschorn edit klipshorn speaker system the klipschorn or k horn loudspeaker is the flagship product of klipsch audio technologies . it was patented by founder paul w. klipsch in 1946 and has been in continuous production in the company s hope arkansas plant since then the longest run in speaker production history . although the klipschorn s basic design is more than sixty years old it has received periodic minor modifications . it was offered for years in kit form through seattle kit manufacturer speakerlab . 8 the klipschorn s large 51 h 129 cm x 31 w 79 cm x 28 d 72 cm enclosure houses a three way design separate drivers the woofer the squawker and the tweeter respectively handle the bass midrange and treble portions of the sound signal . two rectangular horn lenses coupled to compression drivers handle the midrange and treble while a 15 cone woofer is mounted in a folded bass bin compartment below . the folds open at the rear of the horn cabinet structure utilizing the room walls and floor as continuations of horn structure thereby increasing the effective length and size of the horn thus lowering its cut off frequency and likewise its lowest usable tone . the body of the speaker cabinet forms a horn . the k horn shape is like a baseball diamond the pointy rear is open and exposed the flat front covered with a wood panel and the top enclosed in cloth . the speaker sits in the corner of two adjoining walls using the walls and floor boundaries as extensions of the horn . technically speaking the k horn s folded bass corner horn can be described as a bifurcated trihedral floor and two walls to form the trihedral corner exponential wave transmission line . this design results in extremely high efficiency . one watt rms produces a 105 decibel per meter sound pressure level spl which is approximately 14 20 decibels higher than conventional speakers . such sensitivity requires less amplifier power to achieve the same loudness . paul klipsch demonstrated that the klipschorn could reproduce concert level dynamics powered by as little as 1 watt per channel . the k horn encourages the use of low powered amplifiers . the growing popularity in the audiophile community of single ended valve vacuum tube amplifiers has sparked renewed interest in the klipschorn and other highly sensitive klipsch models . citation needed utilizing the room walls and floor boundaries as extensions of the bass horn helps extend the speaker s frequency response down into the 35 hz range considerably lower than would be possible otherwise . because of the folded horn the woofer cone moves no more than a few millimeters . as the only speaker in the world to be in continuous production for 60 years the klipschorn has remained relatively unchanged since its inception . circa 1970 diode overload protection was added across voice coils to prevent burnout from clipping produced by an overdriven amplifier . the midrange horn was originally made entirely from formed wood . some fibreglas bells were used on the midrange horn as well as metal in the late 1950s . eventually the midrange horn was changed from metal to braced fiberglass and the tweeter was front mounted in the 1980s . both of these changes reduced the already low distortion . citation needed in 2005 the company made some minor cosmetic and functional revisions to this legendary speaker including the elimination of the inset collar or spacer between the upper and lower cabinets for a cleaner appearance . a horizontal wall seal was added to improve the low frequency horn s connection to the wall . the crossover which includes some equalization was revoiced in the early 2000s . in 2006 klipsch offered the 60th anniversary klipschorn a separate model from the standard klipschorn . 2 other legacy speakers edit other noteworthy klipsch speakers include la scala belle klipsch cornwall chorus promedia heresy forte quartet legend reference two of these models the la scala and the belle klipsch are fully horn loaded and have extremely high sensitivity similar to the klipschorn but their w shaped folded bass horns do not require corner placement in the listening room . the la scala ii which uses the same drivers as the klipschorn but has a smaller bass chamber and less bass extension was voted into stereophile magazine s recommended components in the a class for speakers with restricted extreme low frequency . citation needed other models including the cornwall and heresy use horn tweeters and midranges in conjunction with direct radiating woofers and also have unusually high sensitivity although not as high as the fully horn loaded models . all of the models cited above feature separate horn loaded tweeter and midrange . as of 2006 the majority of current klipsch models are two way designs utilizing a tractrix horn for the upper midrange and treble . wood finishes available until about 1990 were macassar ebony zebrawood rosewood teak cherry oak oil oak lacquer walnut oil walnut lacquer raw birch birch lacquer and black lacquer . many dealerships displayed wood samples to let customers view and custom order these finishes . in a letter sent to its dealers at that time klipsch cited concern over the responsible use of exotic woods from the rainforests and as a result retired the ebony zebrawood rosewood and teak veneers . current speakers edit the palladium line introduced in 2007 is a high end luxury line of premium speakers . these are sold through special qualified dealers only . the three icon series lines x w and v are diverse products designed to satisfy a variety of tastes and budgets . x modern technology contemporary beauty ; w modern technology classic beauty ; v modern technology value driven performance . the trademark of all three is the use of the new 90 degree by 90 degree xt tractrix horn . the synergy line is sold by major mass market retailers . the reference line tends to be carried by audio specialty stores and custom installers . one feature of the reference line is the use of the trademark cerametallic woofers . these are a combination of materials that produce a very stiff highly controlled cone movement . the newer 2015 reference premier series continues improvements with their hybrid tractrix horn linear travel suspension lts titanium tweeter spun copper cerametallic woofers and an all new tractrix port for the cleanest most powerful low frequency response on the market . thx ultra ii series is a line of dedicated theater speakers and subwoofer . the klipschorn la scala ii cornwall iii and heresy iii comprise the heritage line which is available through select authorized klipsch dealers and klipsch direct often by special order . multi media speakers edit the company also manufactures products for multimedia purposes ; its promedia line of computer speakers has been sold since 1999 and it produces ipod marketed speakers like the igroove with an angled form factor . klipsch used in theaters edit klipsch also features its speaker designs in the hard rock cafe line of restaurants and in several amc and regal theaters . citation needed krikorian theatres have digital sound featuring the klipsch kmx sound system . 9 theaters such as hollywood s bm theater house are using klipsch theater systems for the 18000 audience capacity movie house . on a smaller scale cinemas like golden village singapore used klipsch custom speakers for their gv grand and imax theaters . headphones edit in ear headphones or earphones using balanced armature technology were launched in november 2007 . these headphones use patented contour ear gels invented by mark blanchard of klipsch group 10 which are anatomically designed to accurately fit inside the human ear canal . these oval shaped silicone tips reduce ear fatigue by minimizing pressure to any one area of the ear canal wall . the patented ear tips are designed to be inserted in the ear canal to acquire an air seal for noise isolation and a proper frequency response . in addition to several in ear image models klipsch launched its first on ear model the image one in 2010 . 11 other products edit klipsch group inc. the parent company of klipsch audio technologies also owns the danish loudspeaker firm jamo and in 2006 acquired the brands of mirage athena and energy speakers from audio products international api of canada . in 2001 it acquired the company mondial designs manufacturers of electronics under the aragon and acurus brand names but subsequently discontinued those product