Model #1689-2 · Family: 1689
Year: 1978
This is a 1978 price list for the Adamas by Ovation guitar line, manufactured by Ovation Instruments Inc. of New Hartford, CT. The document lists all available Adamas models including standard, 12-string, wide neck, and electric variants in four colors (Red, Beige, Blue, Brown), with prices ranging from $2,200 to $2,550. All prices are F.O.B. New Hartford, CT, effective January 1, 1978, and include case and case cover.
Year: 1977
This internal Ovation/Kaman memorandum dated February 21, 1977 from B. Hinman to C. McDonough documents the serial number assignments and distribution of Adamas guitars. The document includes a detailed guitar number assignment log dating from 12/3/76 listing serial numbers, model numbers, and dispositions including notable recipients such as Glen Campbell, Neil Diamond, Cat Stevens, Nancy Wilson, and Wings. A list of dealer and customer addresses across the US is also provided, noting that serial #0058-93 had not yet been received.
Year: 2007
Comprehensive Adamas Custom Shop brochure showcasing four base model configurations with extensive customization options. Details the Adamas I Standard Model 1687, Adamas II Standard Model 1581, Adamas Model 1680 (woven carbon fiber), and Adamas Model 2080 (deep contour bowl). Covers all customizable features including top material, finishes, sound hole treatments, body configurations, neck options, fingerboard materials, electronics, and hardware. Printed by Kaman Music Corporation, catalog code KCG-680 01/07. Many thanks to Paul Moody from USA for his help and his kindness
Year: 1983
This is a single-page U.S. Suggested List Price sheet for Ovation's Adamas and Adamas II guitar lines, effective January 1, 1983. It covers seven Adamas models ranging from $1,995 to $2,390 and three Adamas II models ranging from $1,595 to $1,695, along with accessories including a molded hard case and leather look case cover. The document also details available finish colors and notes regarding left-handed models, wide neck configurations, and separate case pricing.
Year: 2007
Japanese-market price list for Adamas and Ovation USA guitars for 2007, distributed by Nakao Corporation (Tokyo). Includes specifications and pricing in Japanese Yen for Adamas, Adamas Re-issue, Custom Legend, Custom Elite, Legend, Elite, Elite Texture, Standard Elite, Standard Balladeer, Legend Nylon, Country Artist, Folklore, Elite Bass, Mandolin, and signature/anniversary models including Melissa Etheridge, Al DiMeola, Nikki Sixx, and Glen Campbell editions. Many thanks to Kazuhiro Gamo from Japan for his help and his kindness
Year: 2005
This Japanese-market catalog celebrates the 30th anniversary of Adamas guitars, which began in 1976 with Charlie Kaman's Operation Ovation. It showcases four limited edition models featuring exotic hardwoods, carbon fiber tops, and special anniversary designs. The document highlights both the latest and reissue models commemorating three decades of Adamas innovation.
Year: 1978
This brochure documents the development history of the Adamas guitar by Ovation Instruments Inc., detailing the engineering innovations including the carbon fiber 'Fibronic Soundboard' construction, the unique neck design with the 'Kaman Bar', and the progression from 6-string to 12-string versions. The document is signed by Charles H. Kaman and emphasizes the technical achievements in achieving superior sound quality, sustain, and frequency response.
Year: 1979
This is a single-page 1979 price list for the Adamas by Ovation guitar line, covering both acoustic and acoustic-electric models in standard, 12-string, and wide-neck configurations. All models were available in five colors (Red, Black, Beige, Blue, Brown) with acoustic prices starting at $2,200 and electric models at $2,395. Prices were effective August 1, 1979, F.O.B. Moosup, CT, and all listed prices included a case and case cover.
Year: 1982
Adamas guitar catalog featuring the full Adamas line including the Adamas, Adamas II, and Adamas Cutaway models. Details the carbon-graphite Fibronic Soundboard top, Kaman Bar neck reinforcing system, deep bowl body, stereo FET preamp electronics, exotic wood epaulets, and available finishes in Red, Black, Beige, Blue, and Brown. Includes full specifications table and accessories/warranty information. Published by Ovation Instruments, a Kaman Company, Bloomfield, CT.
Year: 1993
This is the official Ovation Adamas guitar owner's manual, printed in November 1993, covering the unique features of the Adamas line including the Fibronic Soundboard top, Kaman Bar neck reinforcement system, bridge setup, and electronics. The manual provides detailed maintenance instructions including neck adjustment procedures, action setup, battery replacement for the acoustic-electric system, and general care guidelines. It was published by Ovation Instruments, a division of Kaman Music Corporation, based in New Hartford, Connecticut.
Year: 2000
Japanese-market catalog for the Adamas CVT and SMT carbon fiber-top acoustic-electric guitar lines. Features crossweave carbon fiber (CVT) and unidirectional carbon fiber (SMT) soundboard technologies, the Melissa Etheridge signature 12-string model, detailed construction specs, and finish options. Printed in Japan, September 2000.
Year: 1977
Promotional booklet by Charles H. Kaman telling the story of the Adamas guitar development. Describes the 1972 origins of carbon graphite fiber top technology, the fibronic graphite soundboard construction, Lyrachord roundback heritage, and innovative upper-bout sound ports. Includes technical details on construction and sound quality. Published by Ovation Instruments Inc., a Kaman Music product, Made in U.S.A.
Year: 1978
This is an owner's manual for Adamas guitars by Ovation Instruments. It provides detailed information about the guitar's construction, including the Fibronic soundboard, Kaman Bar neck reinforcement, electronics, and maintenance procedures. The document includes technical specifications and care instructions for the Adamas line of acoustic-electric guitars.
Year: 1977
This is an owner's manual for Adamas guitars by Ovation Instruments Inc. It provides detailed information about the construction, features, maintenance, and specifications of Adamas acoustic and acoustic-electric guitars, including the innovative Fibronic soundboard, bowl design, neck construction, electronics, and accessories.
Year: 1989
This is a single-page French-language Ovation guitar price list from August 1989, distributed by CAMAC. It features the Adamas line of guitars with reference numbers and public prices in French Francs (TTC), along with a selection of Ovation cases (Etuis). The document is branded 'La Guitare des Stars' and includes images of an Adamas guitar and an Ovation gig bag. Many thanks to Rémy Loyant for this nice document Merci beaucoup à Rémy Loyant
Year: 1999
Full product line catalog for Ovation and Adamas acoustic-electric guitars for the Japanese market, featuring Adamas SMT, Adamas, Adamas II, Adamas III, Elite, Custom Elite, Elite Standard, Custom Legend, Legend, Standard Balladeer, Specialty Acoustics (Folklore, LongNeck, Mandolin, Mandocello), Viper, and Bass models. Includes complete Japanese translation pages. Distributed by Nakao Trading Co. (Tokyo). Signed by C.W. Kaman II, President, Ovation Instruments.
Year: 1983
This is the official owner's manual for the Ovation Adamas guitar, published in January 1983 by Ovation Instruments, Inc., a Kaman Company based in Bloomfield, CT. The manual covers the unique features of the Adamas guitar including the Fibronic Soundboard top, Kaman Bar neck reinforcement system, bridge adjustment, and built-in stereo acoustic-electric pickup and preamplifier system. It also provides guidance on care and maintenance, string recommendations, and warranty information.
Year: 1999
Official Japanese market price list for Ovation and Adamas guitars for 1999, covering the full product line including Adamas, Legend, Elite, Balladeer, Folklore, Longneck, Viper, Classic, Country, Mandolin, Mandocello, Collectors Edition, and Custom Shop collections with prices in Japanese Yen.
Year: 1981
This is a two-page French retail price list ('Tarif Public Conseille') dated 15 September 1981 for Ovation, Adamas, Applause, and Matrix brand guitars. It covers acoustic and electro-acoustic 6- and 12-string steel and nylon string guitars, solid body electrics, basses, cases, and strings with prices listed in French Francs. The document also includes color/finish codes and notes on left-handed model availability. Many thanks to my Friend Pascal Clément for that great document
Year: 1993
This is an Ovation Instruments Owner's Manual printed in May 1993 (dated 5/93, part number 990004-H), covering care, maintenance, and technical specifications for Ovation Roundback guitars. The manual includes sections on string care, neck adjustment (Truss Rod and Kaman Bar), bridge setup, and the acoustic-electric OP-24 preamp system. It was produced by Ovation Instruments, a division of Kaman Music Corporation, located at 37 Greenwoods Road, New Hartford, CT 06057.
Year: 1995
Comprehensive product catalog for Ovation and Adamas acoustic-electric guitars distributed in Japan by Nakao Corporation. Covers the full USA-made product line including Adamas, Adamas II, Custom Legend, Elite, Legend, Craftsman, Classic, Old Country Artist, and Viper series with detailed specifications, component details, and Adamas strings. Features bilingual English/Japanese content with full Japanese translations of all product descriptions. Many thanks to Kazuhiro Gamo from Japan for his help and his kindness
Year: 2007
Japanese-market Ovation USA catalog distributed by Nakao Corporation featuring the LX Series lineup including Custom Legend, Custom Elite, Legend, Elite, Standard Balladeer, Standard Elite, Al DiMeola Signature II, Elite T, Nikki Sixx Signature Bass, Balladeer & Elite Special, Specialties, and Traditional series models. Highlights Lyrachord GS bowl, Advanced Neck System, Scalloped X-Bracing, OP-PRO preamp, and OCP-1 pickup technologies. Includes artist photos of Al DiMeola, Steve Lukather, Melissa Etheridge, Nikki Sixx, and Godsmack.
Year: 1980
Many thanks to Bertrand Fritsch from France for these great photos.
Year: 2001
Japanese patent application for an improved composite top member (soundboard) for acoustic stringed instruments. Features a center-free flex edge design with paired composite material layers and a center layer, allowing the soundboard to vibrate more freely than conventional laminated tops. Reduces the need for internal bracing. Filed by Kaman Music Corporation with US priority 09/574356.
Year: 1977
Patent for a guitar body design featuring two discrete sound openings located on either side of the longitudinal center line in the upper bout, replacing the conventional single center sound hole. This construction allows for a thinner sound board with improved bracing patterns, enabling better acoustic response particularly in the first and second harmonic modes of vibration. The design is foundational to the Ovation Adamas guitar series.
Year: 2001
Japanese patent application for an acoustic stringed instrument with a composite material body and neck assembly. Features a neck block-free design where the neck member attaches at two points on the body inner wall, providing structural strength with reduced weight. Uses graphite fiber reinforced composite materials. Filed by Kaman Music Corporation with US priority 09/575320.
Showing items from all 1689 variants
Year: 1977
Comprehensive Ovation U.S.A. Price List with suggested list prices effective August 1, 1977. Covers the full Ovation product line: Acoustic Guitars, Acoustic/Electric Guitars (including the new Adamas series at $2,200-$2,350), Solid Body Guitars (Breadwinner, Deacon, Viper, Preacher), Solid Body Basses (Magnum 1 and 2), Matrix by Ovation, Cases, Strings, and Accessories. Published by Ovation Instruments Inc., New Hartford, CT 06057, a Kaman Company.
Year: 1983
This is a single-page U.S. Suggested List Price sheet for Ovation's Adamas and Adamas II guitar lines, effective January 1, 1983. It covers seven Adamas models ranging from $1,995 to $2,390 and three Adamas II models ranging from $1,595 to $1,695, along with accessories including a molded hard case and leather look case cover. The document also details available finish colors and notes regarding left-handed models, wide neck configurations, and separate case pricing.
Year: 1978
This is a 1978 price list for the Adamas by Ovation guitar line, manufactured by Ovation Instruments Inc. of New Hartford, CT. The document lists all available Adamas models including standard, 12-string, wide neck, and electric variants in four colors (Red, Beige, Blue, Brown), with prices ranging from $2,200 to $2,550. All prices are F.O.B. New Hartford, CT, effective January 1, 1978, and include case and case cover.
Year: 1979
This is a single-page 1979 price list for the Adamas by Ovation guitar line, covering both acoustic and acoustic-electric models in standard, 12-string, and wide-neck configurations. All models were available in five colors (Red, Black, Beige, Blue, Brown) with acoustic prices starting at $2,200 and electric models at $2,395. Prices were effective August 1, 1979, F.O.B. Moosup, CT, and all listed prices included a case and case cover.
Year: 1982
Adamas guitar catalog featuring the full Adamas line including the Adamas, Adamas II, and Adamas Cutaway models. Details the carbon-graphite Fibronic Soundboard top, Kaman Bar neck reinforcing system, deep bowl body, stereo FET preamp electronics, exotic wood epaulets, and available finishes in Red, Black, Beige, Blue, and Brown. Includes full specifications table and accessories/warranty information. Published by Ovation Instruments, a Kaman Company, Bloomfield, CT.
Year: 1977
This internal Ovation/Kaman memorandum dated February 21, 1977 from B. Hinman to C. McDonough documents the serial number assignments and distribution of Adamas guitars. The document includes a detailed guitar number assignment log dating from 12/3/76 listing serial numbers, model numbers, and dispositions including notable recipients such as Glen Campbell, Neil Diamond, Cat Stevens, Nancy Wilson, and Wings. A list of dealer and customer addresses across the US is also provided, noting that serial #0058-93 had not yet been received.
Year: 1984
This is a 4-page German-language wholesale (Brutto) price list dated 2/84 (second edition 1984) covering the full Ovation guitar lineup distributed in Germany. The catalog includes Applause, Ultra, Ovation electro-acoustic western and nylon string models, Adamas and Super Adamas series, Cutaway models, Ovation electric guitars (E-Gitarren) and basses, along with cases and strings. Prices are listed in Deutsche Mark and the document notes left-handed models, available colors, and electronics configurations.
Year: 1984
This is a 1984 Ovation Instruments product catalog dedicated entirely to the Adamas series of acoustic and acoustic-electric guitars, featuring the Adamas, Adamas II, and Adamas Cutaway models. The brochure details the innovative carbon-graphite composite Fibronic Soundboard, the Kaman Bar neck reinforcement system, piezoelectric stereo pickup system, and the distinctive multi-soundhole epaulet design. Available in five finishes (Red, Black, Beige, Blue, Brown), the catalog includes full specifications, model listings, accessories, and warranty information, and was published by Ovation Instruments, Inc., a Kaman Company, based in Bloomfield, Connecticut.
Year: 1979
This is a three-page commercial invoice and shipment document from Ovation Instruments Inc. (a Kaman Company) dated March 2, 1979, for an order shipped to Des Moines Music House in Des Moines, Iowa. The order (Sales Order T51945, placed 08/30/78) includes multiple Adamas acoustic-electric guitars and cases totaling $3,525.00, with payment due by 09/02/79. The shipment document includes serial numbers for the shipped guitars and notes the package as an 'Adamas Package Display.'
Year: 2007
Comprehensive Adamas Custom Shop brochure showcasing four base model configurations with extensive customization options. Details the Adamas I Standard Model 1687, Adamas II Standard Model 1581, Adamas Model 1680 (woven carbon fiber), and Adamas Model 2080 (deep contour bowl). Covers all customizable features including top material, finishes, sound hole treatments, body configurations, neck options, fingerboard materials, electronics, and hardware. Printed by Kaman Music Corporation, catalog code KCG-680 01/07. Many thanks to Paul Moody from USA for his help and his kindness
Year: 2007
Japanese-market price list for Adamas and Ovation USA guitars for 2007, distributed by Nakao Corporation (Tokyo). Includes specifications and pricing in Japanese Yen for Adamas, Adamas Re-issue, Custom Legend, Custom Elite, Legend, Elite, Elite Texture, Standard Elite, Standard Balladeer, Legend Nylon, Country Artist, Folklore, Elite Bass, Mandolin, and signature/anniversary models including Melissa Etheridge, Al DiMeola, Nikki Sixx, and Glen Campbell editions. Many thanks to Kazuhiro Gamo from Japan for his help and his kindness
Year: 2005
This Japanese-market catalog celebrates the 30th anniversary of Adamas guitars, which began in 1976 with Charlie Kaman's Operation Ovation. It showcases four limited edition models featuring exotic hardwoods, carbon fiber tops, and special anniversary designs. The document highlights both the latest and reissue models commemorating three decades of Adamas innovation.
Year: 1978
This brochure documents the development history of the Adamas guitar by Ovation Instruments Inc., detailing the engineering innovations including the carbon fiber 'Fibronic Soundboard' construction, the unique neck design with the 'Kaman Bar', and the progression from 6-string to 12-string versions. The document is signed by Charles H. Kaman and emphasizes the technical achievements in achieving superior sound quality, sustain, and frequency response.
Year: 1993
This is the official Ovation Adamas guitar owner's manual, printed in November 1993, covering the unique features of the Adamas line including the Fibronic Soundboard top, Kaman Bar neck reinforcement system, bridge setup, and electronics. The manual provides detailed maintenance instructions including neck adjustment procedures, action setup, battery replacement for the acoustic-electric system, and general care guidelines. It was published by Ovation Instruments, a division of Kaman Music Corporation, based in New Hartford, Connecticut.
Year: 2000
Japanese-market catalog for the Adamas CVT and SMT carbon fiber-top acoustic-electric guitar lines. Features crossweave carbon fiber (CVT) and unidirectional carbon fiber (SMT) soundboard technologies, the Melissa Etheridge signature 12-string model, detailed construction specs, and finish options. Printed in Japan, September 2000.
Year: 1977
Promotional booklet by Charles H. Kaman telling the story of the Adamas guitar development. Describes the 1972 origins of carbon graphite fiber top technology, the fibronic graphite soundboard construction, Lyrachord roundback heritage, and innovative upper-bout sound ports. Includes technical details on construction and sound quality. Published by Ovation Instruments Inc., a Kaman Music product, Made in U.S.A.
Year: 1978
This is an owner's manual for Adamas guitars by Ovation Instruments. It provides detailed information about the guitar's construction, including the Fibronic soundboard, Kaman Bar neck reinforcement, electronics, and maintenance procedures. The document includes technical specifications and care instructions for the Adamas line of acoustic-electric guitars.
Year: 1977
This is an owner's manual for Adamas guitars by Ovation Instruments Inc. It provides detailed information about the construction, features, maintenance, and specifications of Adamas acoustic and acoustic-electric guitars, including the innovative Fibronic soundboard, bowl design, neck construction, electronics, and accessories.
Year: 1989
This is a single-page French-language Ovation guitar price list from August 1989, distributed by CAMAC. It features the Adamas line of guitars with reference numbers and public prices in French Francs (TTC), along with a selection of Ovation cases (Etuis). The document is branded 'La Guitare des Stars' and includes images of an Adamas guitar and an Ovation gig bag. Many thanks to Rémy Loyant for this nice document Merci beaucoup à Rémy Loyant
Year: 1999
Full product line catalog for Ovation and Adamas acoustic-electric guitars for the Japanese market, featuring Adamas SMT, Adamas, Adamas II, Adamas III, Elite, Custom Elite, Elite Standard, Custom Legend, Legend, Standard Balladeer, Specialty Acoustics (Folklore, LongNeck, Mandolin, Mandocello), Viper, and Bass models. Includes complete Japanese translation pages. Distributed by Nakao Trading Co. (Tokyo). Signed by C.W. Kaman II, President, Ovation Instruments.
Year: 1983
This is the official owner's manual for the Ovation Adamas guitar, published in January 1983 by Ovation Instruments, Inc., a Kaman Company based in Bloomfield, CT. The manual covers the unique features of the Adamas guitar including the Fibronic Soundboard top, Kaman Bar neck reinforcement system, bridge adjustment, and built-in stereo acoustic-electric pickup and preamplifier system. It also provides guidance on care and maintenance, string recommendations, and warranty information.
Year: 1999
Official Japanese market price list for Ovation and Adamas guitars for 1999, covering the full product line including Adamas, Legend, Elite, Balladeer, Folklore, Longneck, Viper, Classic, Country, Mandolin, Mandocello, Collectors Edition, and Custom Shop collections with prices in Japanese Yen.
Year: 1981
This is a two-page French retail price list ('Tarif Public Conseille') dated 15 September 1981 for Ovation, Adamas, Applause, and Matrix brand guitars. It covers acoustic and electro-acoustic 6- and 12-string steel and nylon string guitars, solid body electrics, basses, cases, and strings with prices listed in French Francs. The document also includes color/finish codes and notes on left-handed model availability. Many thanks to my Friend Pascal Clément for that great document
Year: 1980
This is a two-page service/parts document from Ovation Instruments, Inc. for the model 1689 Adamas (wide neck) Acoustic Electric guitar. It includes an exploded-view diagram of all components with reference numbers and a corresponding parts list covering the bridge assembly, onboard electronics (FET amplifier, volume and tone pots, output jacks, choke), hardware washers and nuts, and battery compartment components. The document is intended for technicians or repair personnel needing to identify and order replacement parts for this model.
Year: 1980
This two-page document from Ovation Instruments, Inc. provides an exploded parts diagram and corresponding parts list for the Adamas wide neck guitar models 1189 and 1689 equipped with the Kaman Bar tremolo system. The document covers all major assemblies including the neck, bowl, top, and access door components, each identified by item number and part number. It is intended as a service and replacement parts reference for technicians and owners.
Year: 1993
This is an Ovation Instruments Owner's Manual printed in May 1993 (dated 5/93, part number 990004-H), covering care, maintenance, and technical specifications for Ovation Roundback guitars. The manual includes sections on string care, neck adjustment (Truss Rod and Kaman Bar), bridge setup, and the acoustic-electric OP-24 preamp system. It was produced by Ovation Instruments, a division of Kaman Music Corporation, located at 37 Greenwoods Road, New Hartford, CT 06057.
Year: 1995
Comprehensive product catalog for Ovation and Adamas acoustic-electric guitars distributed in Japan by Nakao Corporation. Covers the full USA-made product line including Adamas, Adamas II, Custom Legend, Elite, Legend, Craftsman, Classic, Old Country Artist, and Viper series with detailed specifications, component details, and Adamas strings. Features bilingual English/Japanese content with full Japanese translations of all product descriptions. Many thanks to Kazuhiro Gamo from Japan for his help and his kindness
Year: 2007
Japanese-market Ovation USA catalog distributed by Nakao Corporation featuring the LX Series lineup including Custom Legend, Custom Elite, Legend, Elite, Standard Balladeer, Standard Elite, Al DiMeola Signature II, Elite T, Nikki Sixx Signature Bass, Balladeer & Elite Special, Specialties, and Traditional series models. Highlights Lyrachord GS bowl, Advanced Neck System, Scalloped X-Bracing, OP-PRO preamp, and OCP-1 pickup technologies. Includes artist photos of Al DiMeola, Steve Lukather, Melissa Etheridge, Nikki Sixx, and Godsmack.
Year: 1979
Many thanks to David from France for these photos.
Year: 1980
Many Thanks to Claude Menu from France for these so nice pictures.
Year: 1978
Many thanks to "Pilotman" from Kansas for these nices photos.
Year: 1982
Many Thanks to Frank Sponagel from Germany for these pictures.
Year: 1979
Adamas I 1689-7 Wide Neck #1012. Many Thanks to Gilles from France for these nice photos. The model number on the label is 1687-7 but this is 1689-7 wide neck.
Year: 1978
Adamas I 1689-7 Wide Neck #325. Many Thanks to my friend Karl from Germany for those very nice photos.
Year: 1980
Many Thanks to Rémy Ginoux from France for these pictures.
Year: 1984
Many Thanks to Elias Argyris from USA for these pictures.
Year: 1976
Many Thanks to Paul Moody from USA for this nice photo . (08/1976)
Year: 1976
Adamas Original Slothead #0057-95 1689-8. Many Thanks to Sam Stathakis from Atlanta/USA for the wonderful photos of this guitar. (12/3/1976)
Year: 1978
Adamas Slothead 1689-7 Wide Neck #519. So many thanks to Rémy Loyant from France for these outstanding photos. This unique guitar has been ordered to the factory in 1978 by Marcel Dadi.
Year: 1980
Many thanks to Bertrand Fritsch from France for these great photos.
Year: 2000
This document is a personal photo catalog of an extensive private Ovation guitar collection, likely belonging to a German collector, showcasing instruments spanning from 1968 to 2007. The collection is organized into series including Carbon-Top (Adamas models), Wood-Top (Balladeer, Josh White, Custom Legend, Elite), and Specialty instruments (Bass, Mandolin, Mandocello, Ukulele, Elite Long Neck). Each instrument is carefully labeled with model name, model number, and year of manufacture, with group photos taken against backdrops of firewood stacks and gardens. This outstanding collection belongs to my friend Karl in Germany Many Thanks Karl for these splendid pictures and for your help .
Year: 2001
Japanese patent application for an improved composite top member (soundboard) for acoustic stringed instruments. Features a center-free flex edge design with paired composite material layers and a center layer, allowing the soundboard to vibrate more freely than conventional laminated tops. Reduces the need for internal bracing. Filed by Kaman Music Corporation with US priority 09/574356.
Year: 1977
Patent for a guitar body design featuring two discrete sound openings located on either side of the longitudinal center line in the upper bout, replacing the conventional single center sound hole. This construction allows for a thinner sound board with improved bracing patterns, enabling better acoustic response particularly in the first and second harmonic modes of vibration. The design is foundational to the Ovation Adamas guitar series.
Year: 2001
Japanese patent application for an acoustic stringed instrument with a composite material body and neck assembly. Features a neck block-free design where the neck member attaches at two points on the body inner wall, providing structural strength with reduced weight. Uses graphite fiber reinforced composite materials. Filed by Kaman Music Corporation with US priority 09/575320.
Adamas 1689-7 Epaulet
Adamas I 1689-7 Bridge
Year: 1976
This is an internal Ovation guitar engineering and quality control data sheet dated 3/15/76 for a custom guitar built for M. Dadi, identified as item #37, Model #1689-8, S/N 0037. The document records detailed construction specifications including top angle, brace dimensions, bridge measurements, and rim width. It also contains three successive measurement test entries (#37-1, #37-2, #37-3) tracking resonance levels (RL), signal-to-noise (SN), and other acoustic parameters at various load points (.25, .50, 1.0) across multiple dates in March and June 1976.
