The Ovation Guitar Company is a manufacturer of string instruments. Ovation primarily manufactures steel-string acoustic guitars (both 6 and 12-string versions) and nylon-string guitars, often with pickups for electric amplification.^[5] In 2015, it became a subsidiary of Drum Workshop after being acquired from KMCMusicorp.^[6]

The company's Ovation and Adamas guitars are known for their round backs, which gives them a recognizable shape. The latter are also well known for the use of carbon fiber tops (instead of the typically wood tops for acoustic guitars). Apart from guitars, the company currently produces acoustic basses, mandolins and ukuleles.^[3]

Founder Charles Kaman (1919–2011) developed the first prototypes of the Ovation guitar in 1965–1966.^[7][8][9] Kaman, an amateur guitarist from an early age, worked on helicopter design as an aerodynamicist at United. Eventually, he founded a helicopter design company, Kaman Aircraft, in 1945.^[10]

The Kaman Corporation soon diversified, branching into nuclear weapons testing, commercial helicopter flight, development and testing of chemicals, and helicopter bearings production. In the early 1960s, however, financial problems from the failure of its commercial flight division forced it to expand into new markets, such as entertainment and leisure. Charles Kaman, still an avid guitar player, became interested in making guitars.^[7][11]

From 1966 to 2007, Ovation guitars, and later on Adamas guitars, were a brand of KMCMusicorp, which itself was a subsidiary of Kaman Aircraft.

In 2008, KMCMusicorp (and with that the Ovation brand) was sold to the Fender Musical Instruments Corporation.^[12] In 2014, Fender announced that they were closing the Ovation guitar factory in New Hartford, Connecticut, leaving all production of Ovation guitars overseas.^[13] Before that announcement, Fender established a U.S. production of various acoustic guitars in the New Hartford factory. Alongside Ovation and Adamas guitars, which were produced there for decades, Fender started a U.S. production of other Fender-owned brands in that factory, as is known, Guild (Guild Guitar Company) and Fender Acoustic Custom Shop.^[14]

Shortly after closing the New Hartford factory on April 30, 2014, it was announced that the Ovation brand had been sold to the company Drum Workshop, alongside a few other previously Fender-owned brands. The announcement was made on January 7, 2015. In addition to the Ovation brand, Drum Workshop also opened a smaller New Hartford factory near the old facility and reinstated the previously ceased U.S. production of Ovation and Adamas guitars.^[15]

In 2022, the German-based GEWA company acquired the brand and assets of Ovation and Adamas from Drum Workshop and moved production to a smaller shop in New Hartford, Connecticut. In January 2024, Ovation and Adamas guitars were displayed at the NAMM Show in Anaheim, CA as part of the larger GEWA family of brands.

Charles Kaman put a team of employees to work to invent a new guitar in 1964.^[7][16] For the project, Kaman chose a small team of aerospace engineers and technicians, several of whom were woodworking hobbyists as well. One of these was Charles McDonough, who created the Ovation Adamas model.^{[history 1]} Kaman founded Ovation Instruments, and in 1965 its engineers and luthiers (guitar makers) worked to improve acoustic guitars by changing their conventional materials. The R&D team spent months building and testing prototype instruments. Their first prototype had a conventional "dreadnought" body, with parallel front and back perpendicular to the sides. The innovation was the use of a thinner, synthetic back, because of its foreseen acoustic properties. Unfortunately, the seam joining the sides to the thin back was prone to breakage. To avoid the problem of a structurally unstable seam, the engineers proposed a synthetic back with a parabolic shape. By mid-1966, according to Ovation, they realized that the parabolic shape produced a desirable tone with greater volume than the conventional dreadnought.^[17]

Once the engineers had settled on a parabolic shape, they turned their attention to developing a substance that could be molded into this bowl-like shape. Using their knowledge of high-tech aerospace composites, they developed Lyrachord, a patented material comprising interwoven layers of glass filament and bonding resin.

The first successful design, built by luthier Gerry Gardner, went into production soon after the company was established.^[18]

The first Ovation guitar made its debut in November 1966. Its Lyrachord body gave the instrument, according to the company, unprecedented projection and ringing sustain.^{[history 2]} Compared to modern Ovation Guitars, the initial instruments had a shiny bowl that was used again, for example, in the Balladeer 40th anniversary re-issue.

The introduction and promotion of the first Ovation was closely associated with two performing artists, the blues-performer Josh White and the country-music singer Glen Campbell.

This section possibly contains original research. (October 2012)

Ovation guitar design reflects its founder's engineering training and development of Kaman helicopters. Ovation guitars replace the instrument's conventional back and sides with composite synthetic bowls. Kaman felt there were structural weaknesses in the orthogonal joining of the sides, and that a composite material could provide a smooth body. Ovation claims the parabolic bowls dramatically reduce feedback, allowing greater amplification. Improved synthetics techniques from helicopter engineering control vibrations in the bowl. Ovation developed a thin neck, striving for the feel of an electric guitar's neck, but with additional strength from layers of mahogany and maple reinforced by a steel rod in an aluminum channel.^[5] The composite materials and thin necks reduced weight.

For its soundboards, Ovation uses Sitka spruce, a wood that Kaman engineers used in helicopter blades. In the 1970s, Ovation developed thinner soundboards with carbon-based composites laminating a thin layer of birch in its Adamas model. The Adamas model dispersed the sound-hole of the traditional soundboard among 22 small sound holes in the upper chamber of the guitar, which Ovation says yields greater volume and further reduces feedback during amplification (pioneered in the Adamas model in 1977).^[5] Although the area of the multiple sound holes is equal to the area of a single-soundhole, the altered position allows a new style of guitar bracing (e.g. Adamas Bracing). The design strengthens the soundboard, reducing the traditional design's bracing and hence weight. In the 1980s, Ovation introduced shallow-bowl guitars to appeal to electric guitarists.

In 1977–1978, Gypsy, an Ovation performing and recording artist, designed the first stereo pre-amplifier for the Adamas 12 string and used it on his album "Ladies Love Outlaws." At the same time, Ovation provided small doors that blocked the sound holes from the inside in order to dampen feedback in the presence of loud stage monitors. Gypsy had also requested the addition of a round hatch in the back of the body of pre-Adamas guitars to facilitate changing the on-board battery, a feature that was then adopted for all the "round holes." Before this time, the strings on the round-hole guitars had to be removed to do this. On-board electronics let guitarists move about the stage rather than stay in front of a microphone. On-board electronic tuning, availability, uniformity, and frugal costs facilitated performances by guitar ensembles like Robert Fripp's Guitar Craft students. Ovation has also produced solid-body electric guitars and active basses.

Ovations reached the height of their popularity in the 1980s, where they were often seen during live performances by touring artists, such as Rush's Alex Lifeson or Paul Simon in The Concert in Central Park. Ovation guitars' synthetic bowl-shaped back and early use (1971) of pre-amplifiers, onboard equalization and piezo pickups were particularly attractive to live acoustic musicians who constantly battled feedback problems from the high volumes needed in live venues.^{[citation needed]}

This section possibly contains original research. (October 2012)

The Ovation Guitar Company produces guitars under the names Ovation and Adamas.

Ovation guitars have been also produced in China, South Korea and Indonesia. Import models generally have a wooden top. Recently, Ovation significantly reduced U.S. production. From 2010 on, better models—Legend, Elite, Custom Legend, Custom Elite—were made both in the U.S. and in Korea. Before that, these models were U.S. made. In recent years, many U.S. made are identifiable by "LX" in the product name (e.g., Legend 2077LX), whereas Korean versions have "AX" in the model name (e.g., Legend 2077AX). Ovation does not use this convention on all models (e.g., Ovation 1617ALE). Currently, Ovation produces only a few U.S. made models, mostly signature and limited edition models (e.g., Custom Legend 1769-ADII Al DiMeola). Production of the standard model range of Ovation guitars in the U.S. had been ceased under the ownership of Fender Musical Instruments Corporation, but is planned to be reinstated by the new owner Drum Workshop.^{[15] [23]}

The Adamas name mainly stands for guitars with a carbon fiber top, although there are exceptions (one is the Adamas 2081WT - WT stands for woodtop). Until the closure of the New Hartford, Connecticut factory in June 2014, all Adamas models were produced in the U.S.^[24] LX does not only stand for U.S. made. Originally LX indicated an Ovation guitar that included new features not available on previous models.

Back in 2007 Ovation explained on its website that new features included the new OP-Preamp, an advanced neck system (lightweight dual-action truss rod, carbon fiber stabilizers), a patented pickup (made of 6 elements), inlaid epaulets, scalloped bracing, and a new hard composite Lyrachord GS body.^{[model 8]} Back then, there was no AX model line. The first AX models appeared on the Ovation-website in 2010. Based on the website's history, the LX features were introduced in 2004.

• Kaman Music Corporation
• Kaman Aircraft
• Ovation UKII

• Anonymous, Music Trades (October 1, 2004). "Ovation's encore: How a host of product refinements have rekindled growth at Kaman Music's flagship guitar division". The Music Trades. The Guitar Market. Archived from the original on February 28, 2011. Retrieved May 1, 2012.
• Carter, Walter (1996). Eiche, Jon (ed.). The history of the Ovation guitar. Musical Instruments Series (first ed.). Milwaukee, WI: Hal Leonard Corporation. pp. 1–128. ISBN 978-0-7935-5876-6. HL00330187, ISBN 978-0-7935-5876-6, ISBN 0-7935-5876-X (softcover), ISBN 0-7935-5948-0 (hardcover).
• Cruice, Valerie (December 8, 1996). "From the ratcheting of helicopters to a guitar's hum". The New York Times.
• Denyer, Ralph (1992). "Ovation guitars (Acoustic guitars)". The guitar handbook. Special contributors Isaac Guillory and Alastair;M.;Crawford;>Robert Fripp (foreword) (Fully revised and updated ed.). London and Sydney: Pan Books. p. 48. ISBN 0-330-32750-X.
• Marks, Brenda (May 30–31, 1999). "Connecticut firm makes guitars, helicopter blades from same fiberglass". Waterbury Republican-American. New Hartford, Conn.: Knight Ridder/Tribune Business News. Archived from the original on February 23, 2016. Retrieved April 24, 2012.
• Tamm, Eric (1990). "Ten Guitar Craft". Robert Fripp: From Crimson King to crafty master (Progressive Ears ed.). Faber & Faber (1990). Archived from the original on October 26, 2011.