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. Products The Klipschorn 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 seventy years old, it has received periodic minor modifications. A "knockoff" (Model K) was offered for years in kit form through Seattle kit manufacturer SpeakerLab. 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 at 1 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