Gibson J-45

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Gibson J-45
A 1967 Gibson J-45 Guitar.
Manufacturer	Gibson
Period	1942-present
Construction
Body type	Jumbo
Neck joint	Dovetail
Scale	24 3/4
Woods
Body	Sitka Spruce top Mahogany back and sides
Neck	Mahogany
Fretboard	Rosewood
Hardware
Bridge	Rosewood
Colors available
Natural, Heritage Cherry Sunburst, Vintage Sunburst

The Gibson J-45 is a guitar manufactured by the Gibson Guitar Corporation. Generally regarded as Gibson's most famous and widely used acoustic guitar model, it is considered the workhorse of guitars. The Jumbo guitar is signified by the "J" and not to be confused with C.F. Martin & Company's Dreadnought body style. In 1934 the jumbo was Gibson's competing response to Martin's "D" line body shape of 1930s. The jumbo is distinctive from Martin's dreadnoughts: The Gibson J-45 body depth remains over 4″ deep from endpin to neck heel, it also features a slightly larger body than a Martin D-28 as well as the shape of the two competing body styles being quite different; Squarish upper bouts on the Martins opposed to a rounded or “sloped shoulder” on The Gibson. While Martin did produce the first sloped shoulder guitar the specs of the J-45 are dissimilar.

The J-45 is noted for its sunburst finish, warm bass and good projection, and outstanding playability.^{[citation needed]} The structurally similar naturally finished J-50 first appeared in 1942, but did not enter continuous production until 1947.

Introduced in 1942 to replace the inexpensive Great Depression-era flattop J-35, the J-45 standardized the company's approach to the dreadnought guitar. With a list price of $45, it nonetheless initially only varied slightly, with strengthened internal bracing and a new teardrop-shaped pickguard. A headstock decal with the Gibson logo replaced both the old stark white silkscreened 'Gibson' of the thirties and the slogan "Only a Gibson Is Good Enough." It also had a more rounded, "baseball bat" style neck, as opposed to the "V" shape of the J-35 neck. The version produced today is substantially similar to the 1942 model.

Cosmetically, the J-45 was understated, intended as a durable no-frills "workhorse guitar" (its nickname given by the manufacturer). Although a few triple-bound top types were initially produced, the standard single binding was simple, soundhole ring austere, and neck only sported modest dot-shaped mother of pearl fretboard position markers. Gibson used a sunburst finish to cover up imperfections in the wood joins.^[1] The top was solid spruce, the back and sides solid mahogany. Over time the sunburst has become iconic, with collectors preferring the J-45 to the higher-end J-50s of the same era. Apart from a small batch of natural-finish J-45s produced in 1942, the model was offered only in sunburst.

Starting in 1968 Gibson made J-45s as square-shouldered dreadnought-shaped guitars with a longer scale (25.5"), similar to the Gibson Dove. Serial numbers tell us that during '68 and '69 both slope-shouldered and square-shouldered J-45s were made before the model changeover was complete. In the '70s the J-45 was re-labeled as the J-45 Deluxe. A short run of slope-shouldered J-45 Celebrity models were made in 1984. By the late '90s the slope-shouldered body style returned for good.

The J-50 guitars is essentially a natural-finish J-45, with a triple rather than single-bound top and other minor differences in trim. Gibson produced a handful in 1942 using high quality wood laid up before World War II-induced shortages took hold. By 1947 supplies had resumed, resulting in the model's official introduction. There are mid-1960s J45 guitars with a natural finish and adjustable bridges and this can be checked by the stamp on the back seam brace.

• Gruhn, George; Walter Carter (March 2008). "The Gibson J-45". Vintage Guitar magazine. 22 (5): 46.

Wikimedia Commons has media related to Gibson J-45.

• Official website
• J-45 at Vintage Guitars website
• Gibson J-45 on Fretbase - includes specs, photos and videos
• Jumbo at VintageGuitar.com