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An electric guitar is a
guitar The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected strin ...
that requires external amplification in order to be heard at typical performance volumes, unlike a standard acoustic guitar (however combinations of the two - a
semi-acoustic A semi-acoustic guitar, hollow-body electric, or thinline is a type of electric guitar that was first created in the 1930s. It has a sound box and at least one electric pickup. The semi-acoustic guitar is different to an acoustic-electric guit ...
guitar and an electric acoustic guitar exist). It uses one or more pickups to convert the vibration of its strings into electrical signals, which ultimately are reproduced as sound by
loudspeakers A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or "l ...
. The sound is sometimes shaped or electronically altered to achieve different
timbres In music, timbre ( ), also known as tone color or tone quality (from psychoacoustics), is the perceived sound quality of a musical note, sound or tone. Timbre distinguishes different types of sound production, such as choir voices and musica ...
or tonal qualities on the amplifier settings or the knobs on the guitar from that of an acoustic guitar. Often, this is done through the use of
effect Effect may refer to: * A result or change of something ** List of effects ** Cause and effect, an idiom describing causality Pharmacy and pharmacology * Drug effect, a change resulting from the administration of a drug ** Therapeutic effect, a ...
s such as
reverb Reverberation (also known as reverb), in acoustics, is a persistence of sound, after a sound is produced. Reverberation is created when a sound or signal is reflected causing numerous reflections to build up and then decay as the sound is abs ...
, distortion and "overdrive"; the latter is considered to be a key element of electric blues guitar music and
jazz Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana in the late 19th and early 20th centuries, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a m ...
and
rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...
guitar playing. Invented in 1932, the electric guitar was adopted by jazz guitar players, who wanted to play single-note guitar solos in large
big band A big band or jazz orchestra is a type of musical ensemble of jazz music that usually consists of ten or more musicians with four sections: saxophones, trumpets, trombones, and a rhythm section. Big bands originated during the early 1910s ...
ensembles. Early proponents of the electric guitar on record include Les Paul, George Barnes (musician), Lonnie Johnson, Sister Rosetta Tharpe,
T-Bone Walker Aaron Thibeaux "T-Bone" Walker (May 28, 1910 – March 16, 1975) was an American blues musician, composer, songwriter and bandleader, who was a pioneer and innovator of the jump blues, West Coast blues, and electric blues sounds. In 2018 ''R ...
, and
Charlie Christian Charles Henry Christian (July 29, 1916 – March 2, 1942) was an American swing and jazz guitarist. Christian was an important early performer on the electric guitar and a key figure in the development of bebop and cool jazz. He gained nat ...
. During the 1950s and 1960s, the electric guitar became the most important instrument in
popular music Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training.Popular Music. (2015). ''Fu ...
. It has evolved into an instrument that is capable of a multitude of sounds and styles in genres ranging from pop and
rock Rock most often refers to: * Rock (geology), a naturally occurring solid aggregate of minerals or mineraloids * Rock music, a genre of popular music Rock or Rocks may also refer to: Places United Kingdom * Rock, Caerphilly, a location in Wales ...
to
folk Folk or Folks may refer to: Sociology *Nation *People * Folklore ** Folk art ** Folk dance ** Folk hero ** Folk music *** Folk metal *** Folk punk *** Folk rock ** Folk religion * Folk taxonomy Arts, entertainment, and media * Folk Plus or Fo ...
to
country music Country (also called country and western) is a genre of popular music that originated in the Southern and Southwestern United States in the early 1920s. It primarily derives from blues, church music such as Southern gospel and spirituals, ...
, blues and
jazz Jazz is a music genre that originated in the African-American communities of New Orleans, Louisiana in the late 19th and early 20th centuries, with its roots in blues and ragtime. Since the 1920s Jazz Age, it has been recognized as a m ...
. It served as a major component in the development of
electric blues Electric blues refers to any type of blues music distinguished by the use of electric amplification for musical instruments. The guitar was the first instrument to be popularly amplified and used by early pioneers T-Bone Walker in the late 1930 ...
,
rock and roll Rock and roll (often written as rock & roll, rock 'n' roll, or rock 'n roll) is a genre of popular music that evolved in the United States during the late 1940s and early 1950s. It originated from African-American music such as jazz, rhythm a ...
,
rock music Rock music is a broad genre of popular music that originated as " rock and roll" in the United States in the late 1940s and early 1950s, developing into a range of different styles in the mid-1960s and later, particularly in the United States an ...
, heavy metal music and many other genres of music. Electric guitar design and construction varies greatly in the shape of the body and the configuration of the neck, bridge, and pickups. Guitars may have a fixed
bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...
or a spring-loaded hinged bridge, which lets players "bend" the pitch of notes or chords up or down, or perform
vibrato Vibrato ( Italian, from past participle of " vibrare", to vibrate) is a musical effect consisting of a regular, pulsating change of pitch. It is used to add expression to vocal and instrumental music. Vibrato is typically characterised in terms ...
effects. The sound of an electric guitar can be modified by new playing techniques such as
string bending String bending is a guitar technique where fretted strings are displaced by application of a force by the fretting fingers in a direction perpendicular to their vibrating length. This has the net effect of increasing the pitch of a note (or notes ...
,
tapping Tapping is a playing technique that can be used on any stringed instrument, but which is most commonly used on guitar. The technique involves a string being fretted and set into vibration as part of a single motion. This is in contrast to stand ...
, and hammering-on, using
audio feedback Audio feedback (also known as acoustic feedback, simply as feedback) is a positive feedback situation which may occur when an acoustic path exists between an audio input (for example, a microphone or guitar pickup) and an audio output (for exa ...
, or slide guitar playing. There are several types of electric guitar, including: the
solid-body thumb , Sound sample of solid-body electric guitar. A solid-body musical instrument is a string instrument such as a guitar, bass or violin built without its normal sound box and relying on an electromagnetic pickup system to directly detect th ...
guitar; various types of hollow-body guitars; the
six-string guitar The guitar is a fretted musical instrument that typically has six strings. It is usually held flat against the player's body and played by strumming or plucking the strings with the dominant hand, while simultaneously pressing selected strin ...
(the most common type), which is usually tuned E, A, D, G, B, E, from lowest to highest strings; the
seven-string guitar The seven-string guitar adds one additional string to the more common six-string guitar, commonly used to extend the bass range (usually a low B) or also to extend the treble range. The additional string is added in one of two different ways: b ...
, which typically adds a low B string below the low E; the
eight-string guitar An eight-string guitar is a guitar with eight strings, or one more than the Russian guitar's seven. Eight-string guitars are less common than six- and seven-string guitars, but they are used by a few classical, jazz, and metal guitarists. The ...
, which typically adds a low E or F# string below the low B; and the
twelve-string guitar A twelve-string guitar (or 12-string guitar) is a steel-string guitar with 12 strings in six courses, which produces a thicker, more ringing tone than a standard six-string guitar. Typically, the strings of the lower four courses are tuned in o ...
, which has six pairs of strings. In pop and rock, the electric guitar is often used in two roles: as a rhythm guitar, which plays the chord sequences or progressions, and
riff A riff is a repeated chord progression or refrain in music (also known as an ostinato figure in classical music); it is a pattern, or melody, often played by the rhythm section instruments or solo instrument, that forms the basis or acc ...
s, and sets the
beat Beat, beats or beating may refer to: Common uses * Patrol, or beat, a group of personnel assigned to monitor a specific area ** Beat (police), the territory that a police officer patrols ** Gay beat, an area frequented by gay men * Battery (c ...
(as part of a rhythm section); and as a
lead guitar Lead guitar (also known as solo guitar) is a musical part for a guitar in which the guitarist plays melody lines, instrumental fill passages, guitar solos, and occasionally, some riffs and chords within a song structure. The lead is the featu ...
, which provides instrumental melody lines, melodic instrumental fill passages, and solos. In a small group, such as a
power trio A power trio is a rock and roll band format having a lineup of electric guitar, bass guitar and drum kit (drums and cymbals), leaving out a second rhythm guitar or keyboard instrument that are often used in other rock music bands that are quart ...
, one guitarist switches between both roles. In large rock and Metal bands, there is often a rhythm guitarist and a lead guitarist.


History

Many experiments with electrically amplifying the vibrations of a string instrument were made dating back to the early part of the 20th century. Patents from the 1910s show telephone transmitters were adapted and placed inside violins and banjos to amplify the sound. Hobbyists in the 1920s used carbon button microphones attached to the
bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...
; however, these detected vibrations from the bridge on top of the instrument, resulting in a weak signal.Wheelwright, Lynn; Carter, Walter (28 April 2010)

''Vintage Guitar''. Retrieved 10 July 2014.
Electric guitars were originally designed by acoustic guitar makers and instrument manufacturers. The demand for amplified guitars began during the big band era; as orchestras increased in size, guitar players soon realized the necessity in guitar amplification and electrification. The first electric guitars used in jazz were hollow
archtop An archtop guitar is a hollow electric or semi-acoustic guitar with a full body and a distinctive arched top, whose sound is particularly popular with jazz, blues, and rockabilly players. Typically, an archtop guitar has: * Six strings * An ar ...
acoustic guitar bodies with electromagnetic
transducer A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and cont ...
s. The first electrically amplified stringed instrument to be marketed commercially was a cast
aluminium Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...
lap steel guitar nicknamed the "Frying Pan" designed in 1931 by George Beauchamp, the general manager of the National Guitar Corporation, with Paul Barth, who was vice president. George Beauchamp, along with Adolph Rickenbacker, invented the electromagnetic pickups. Coils that were wrapped around a magnet would create an electromagnetic field that converted the vibrations of the guitar strings into electrical signals, which could then be amplified. Commercial production began in late summer of 1932 by the Ro-Pat-In Corporation (Electro-Patent-Instrument Company), in Los Angeles, a partnership of Beauchamp,
Adolph Rickenbacker Adolph Rickenbacker (April 1, 1887 – March 21, 1976) was a Swiss-American electrical engineer who co-founded the Rickenbacker guitar company along with George Beauchamp and Paul Barth. Rickenbacker was born in Basel, Switzerland as Adolf Ric ...
(originally Rickenbacher), and Paul Barth. In 1934, the company was renamed the
Rickenbacker Rickenbacker International Corporation is a string instrument manufacturer based in Santa Ana, California. The company is credited as the first known maker of electric guitars – a steel guitar in 1932 – and today produces a rang ...
Electro Stringed Instrument Company. In that year Beauchamp applied for a United States patent for an ''Electrical Stringed Musical Instrument'' and the patent was later issued in 1937. By the time it was patented, other manufacturers were already making their own electric guitar designs. Early electric guitar manufacturers include Rickenbacker in 1932; Dobro in 1933; National,
AudioVox Voxx International is an American consumer electronics company founded as Audiovox Corporation in 1960, and renamed Voxx in 2012. It is headquartered in Orlando, Florida. The company specializes in four areas: OEM and after-market automotive ...
and Volu-tone in 1934;
Vega Vega is the brightest star in the northern constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively close at only from the Sun, a ...
,
Epiphone Epiphone is an American musical instrument brand that traces its roots to a musical instrument manufacturing business founded in 1873 by Anastasios Stathopoulos in Smyrna, Ottoman Empire, and moved to New York City in 1908. After taking over his f ...
(Electrophone and Electar), and
Gibson Gibson may refer to: People * Gibson (surname) Businesses * Gibson Brands, Inc., an American manufacturer of guitars, other musical instruments, and audio equipment * Gibson Technology, and English automotive and motorsport company based * Gi ...
in 1935 and many others by 1936. By early-mid 1935, Electro String Instrument Corporation had achieved success with the "Frying Pan", and set out to capture a new audience through its release of the Electro-Spanish Model B and the
Electro-Spanish Ken Roberts Manufactured by Ro-Pat-In Corporation, Rickenbacker, the Electro-Spanish Ken Roberts is considered the pioneering "grandfather" to the modern electric guitar as it was the first commercially produced, full-scale (twenty-five inch) electric guitar ...
, which was the first full 25-inch scale electric guitar ever produced. The Electro-Spanish Ken Roberts was revolutionary for its time, providing players a full 25-inch scale, with easy access to 17 frets free of the body. Unlike other lap-steel electrified instruments produced during the time, the Electro-Spanish Ken Roberts was designed to play while standing upright with the guitar on a strap, as with acoustic guitars. The Electro-Spanish Ken Roberts was also the first instrument to feature a hand-operated vibrato as a standard appointment, a device called the "Vibrola," invented by
Doc Kauffman Doc Kauffman (born Clayton Orr Kauffman May 4, 1901, died June 26, 1990) was a lap steel guitar, electric guitar engineer, inventor and pioneer of the world's first patented guitar vibrato system. The patent for ''"Apparatus for producing tremo ...
. It is estimated that fewer than 50 Electro-Spanish Ken Roberts were constructed between 1933 and 1937; fewer than 10 are known to survive today. The
solid-body thumb , Sound sample of solid-body electric guitar. A solid-body musical instrument is a string instrument such as a guitar, bass or violin built without its normal sound box and relying on an electromagnetic pickup system to directly detect th ...
electric guitar is made of solid wood, without functionally resonating air spaces. The first solid-body Spanish standard guitar was offered by Vivi-Tone no later than 1934. This model featured a guitar-shaped body of a single sheet of plywood affixed to a wood frame. Another early, substantially solid Spanish electric guitar, called the Electro Spanish, was marketed by the Rickenbacker guitar company in 1935 and made of Bakelite. By 1936, the Slingerland company introduced a wooden solid-body electric model, the Slingerland Songster 401 (and a lap steel counterpart, the Songster 400). Gibson's first production electric guitar, marketed in 1936, was the ES-150 model ("ES" for "Electric Spanish", and "150" reflecting the $150 price of the instrument, along with matching amplifier). The ES-150 guitar featured a single-coil, hexagonally shaped "bar" pickup, which was designed by Walt Fuller. It became known as the "
Charlie Christian Charles Henry Christian (July 29, 1916 – March 2, 1942) was an American swing and jazz guitarist. Christian was an important early performer on the electric guitar and a key figure in the development of bebop and cool jazz. He gained nat ...
" pickup (named for the great jazz guitarist who was among the first to perform with the ES-150 guitar). The ES-150 achieved some popularity but suffered from unequal loudness across the six strings. A functioning solid-body electric guitar was designed and built in 1940 by Les Paul from an Epiphone acoustic archtop as an experiment. His " log guitar" — a wood post with a neck attached and two hollow-body halves attached to the sides for appearance only — shares nothing in common for design or hardware with the solid-body Gibson Les Paul, designed by
Ted McCarty Theodore McCarty (October 10, 1909 – April 1, 2001) was an American businessman who worked with the Wurlitzer Company and the Gibson Guitar Corporation. In 1966, he and Gibson Vice President John Huis bought the Bigsby Electric Guitar Company. At ...
and introduced in 1952. The feedback associated with amplified hollow-bodied electric guitars was understood long before Paul's "log" was created in 1940; Gage Brewer's Ro-Pat-In of 1932 had a top so heavily reinforced that it essentially functioned as a solid-body instrument.


Types


Solid-body

Unlike acoustic guitars,
solid-body thumb , Sound sample of solid-body electric guitar. A solid-body musical instrument is a string instrument such as a guitar, bass or violin built without its normal sound box and relying on an electromagnetic pickup system to directly detect th ...
electric guitars have no vibrating soundboard to amplify string vibration. Instead, solid-body instruments depend on electric pickups (microphones) and an
amplifier An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It may increase the power significantly, or its main effect may be to boost t ...
(or amp) and
speaker Speaker may refer to: Society and politics * Speaker (politics), the presiding officer in a legislative assembly * Public speaker, one who gives a speech or lecture * A person producing speech: the producer of a given utterance, especially: ** I ...
. The solid body ensures that the amplified sound reproduces the string vibration alone, thus avoiding the wolf tones and unwanted feedback associated with amplified acoustic guitars. These guitars are generally made of hardwood covered with a hard
polymer A polymer (; Greek '' poly-'', "many" + ''-mer'', "part") is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic a ...
finish, often polyester or lacquer. In large production facilities, the wood is stored for three to six months in a wood-drying
kiln A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay int ...
before being cut to shape. Premium custom-built guitars are frequently made with much older, hand-selected wood. One of the first solid-body guitars was invented by Les Paul.
Gibson Gibson may refer to: People * Gibson (surname) Businesses * Gibson Brands, Inc., an American manufacturer of guitars, other musical instruments, and audio equipment * Gibson Technology, and English automotive and motorsport company based * Gi ...
did not present their Gibson Les Paul guitar prototypes to the public, as they did not believe the solid-body style would catch on. Another early solid-body Spanish style guitar, resembling what would become Gibson's Les Paul guitar a decade later, was developed in 1941 by O.W. Appleton, of Nogales, Arizona. Appleton made contact with both Gibson and Fender but was unable to sell the idea behind his "App" guitar to either company. In 1946, Merle Travis commissioned steel guitar builder
Paul Bigsby Paul Adelburt Bigsby (1899–1968) was an American inventor, designer, and pioneer of the solid body electric guitar. Bigsby is best known for having been the designer of the Bigsby vibrato tailpiece (also mislabeled as a tremolo arm) and prop ...
to build him a solid-body Spanish-style electric. Bigsby delivered the guitar in 1948. The first mass-produced solid-body guitar was
Fender Esquire The Fender Esquire is a solid-body electric guitar manufactured by Fender. The Esquire was the first solid-body guitar sold by Fender, debuting in 1950.. Shortly after its introduction, a two- pickup version was built. It was soon renamed the ''B ...
and
Fender Broadcaster The Fender Telecaster, colloquially known as the Tele , is an electric guitar produced by Fender. Together with its sister model the Esquire, it is the world's first mass-produced, commercially successful Les Paul had built a prototype solid bo ...
(later to become the
Fender Telecaster The Fender Telecaster, colloquially known as the Tele , is an electric guitar produced by Fender. Together with its sister model the Esquire, it is the world's first mass-produced, commercially successful Les Paul had built a prototype solid bo ...
), first made in 1948, five years after Les Paul made his prototype. The Gibson Les Paul appeared soon after to compete with the Broadcaster. Another notable solid-body design is the
Fender Stratocaster The Fender Stratocaster, colloquially known as the Strat, is a model of electric guitar designed from 1952 into 1954 by Leo Fender, Bill Carson, George Fullerton, and Freddie Tavares. The Fender Musical Instruments Corporation has continuousl ...
, which was introduced in 1954 and became extremely popular among musicians in the 1960s and 1970s for its wide tonal capabilities and more comfortable ergonomics than other models. Different styles of guitar have different pick-up styles, the main being 2 or 3 ‘
single-coil A single coil pickup is a type of magnetic transducer, or pickup, for the electric guitar and the electric bass. It electromagnetically converts the vibration of the strings to an electric signal. Single coil pickups are one of the two most po ...
’ pick-ups or a double humbucker, with the Stratocaster being a triple single-coil guitar. The history of Electric Guitars is summarized by Guitar World magazine, and the earliest electric guitar on their top 10 list is the Ro-Pat-In Electro A-25 "Frying Pan" (1932) described as 'The first-fully functioning solid-body electric guitar to be manufactured and sold'. The most recent electric guitar on this list is the Ibanez Jem (1987) which featured '24 frets', 'an impossibly thin neck' and was 'designed to be the ultimate shredder machine'. Numerous other important electric guitars are on the list including Gibson ES-150 (1936), Fender Telecaster (1951), Gibson Les Paul (1952), Gretsch 6128 Duo Jet (1953), Fender Stratocaster (1954), Rickenbacker 360/12 (1964), Frankenstrat, Van Halen Frankenstrat (1975), Paul Reed Smith Custom (1985) many of these guitars were 'successors' to earlier designs. Electric Guitar designs eventually became culturally important and visually iconic, with various model companies selling miniature model versions of particularly famous electric guitars, for example, the Gibson SG used by Angus Young from the group AC/DC.


Chambered-body

Some solid-bodied guitars and some others, such as the Gibson Les Paul Supreme, the PRS Guitars, PRS Singlecut, and the Fender Telecaster Thinline, are built with hollow chambers in the body. These chambers are designed to not interfere with the critical bridge and string anchor point on the solid body. In the case of Gibson and PRS, these are called ''chambered bodies''. The motivation for this may be to reduce weight, to achieve a semi-acoustic tone (see below) or both.


Semi hollow-body

Semi hollow-body guitars have a hollow body similar in depth to a solid-body guitar rather than an acoustic guitar, and electronic pickups mounted on the body. They work in a similar way to solid-body electric guitars except that because the hollow body also vibrates, the pickups convert a combination of string and body vibration into an electrical signal. Whereas chambered guitars are made, like solid-body guitars, from a single block of wood, semi- and full-hollow-body guitar bodies are made from thin sheets of wood. Many models have a solid block running through the middle of the soundbox designed to reduce acoustic feedback. They do not provide enough acoustic volume for live performance, but they can be used unplugged for quiet practice. Semi-hollow guitars are noted for being able to provide a sweet, plaintive, or funky tone. They are used in many genres, including blues, funk, sixties pop, and indie rock. They generally have cello-style F-shaped sound holes, which can be blocked off to further reduce feedback. These guitars are also known as ''semi-acoustic'' guitars, although this term may also be more generally applied to any electric guitar with a hollow body (see below).


Full hollow-body

Full hollow-body guitars have large, deep bodies made of glued-together sheets, or "plates", of wood. They can often be played at the same volume as an acoustic guitar and therefore can be used unplugged at intimate gigs. They qualify as electric guitars inasmuch as they have fitted pickups. Historically, archtop guitars with retrofitted pickups were among the very earliest electric guitars. The instrument originated during the Jazz Age, in the 1920s and 1930s, and are still considered the classic jazz guitar (nicknamed "jazzbox"). Like semi-acoustic guitars, they often have f-shaped sound holes. Having humbucker pickups (sometimes just a neck pickup) and usually strung heavily, jazz boxes are noted for their warm, rich tone. A variation with single-coil pickups, and sometimes with a Bigsby vibrato tailpiece, Bigsby tremolo, has long been popular in country music, country and rockabilly; it has a distinctly more twangy, biting tone than the classic jazz box. The term ''
archtop An archtop guitar is a hollow electric or semi-acoustic guitar with a full body and a distinctive arched top, whose sound is particularly popular with jazz, blues, and rockabilly players. Typically, an archtop guitar has: * Six strings * An ar ...
'' refers to a method of construction subtly different from the typical acoustic (or steel string guitar, "folk" or "western" or "steel-string" guitar): the top is formed from a moderately thick () piece of wood, which is then carved into a thin () domed shape, whereas conventional acoustic guitars have a thin, flat top.


Electric acoustic

Some steel-string acoustic guitars are fitted with Pick up (music technology), pickups purely as an alternative to using a separate microphone. They may also be fitted with a piezoelectric pickup under the bridge, attached to the bridge mounting plate, or with a low-mass microphone (usually a condenser mic) inside the body of the guitar that converts the vibrations in the body into electronic signals. Combinations of these types of pickups may be used, with an integral mixer/preamp/graphic equalizer. Such instruments are called electric acoustic guitars. They are regarded as acoustic guitars rather than electric guitars because the pickups do not produce a signal directly from the vibration of the strings, but rather from the vibration of the guitar top or body. Electric acoustic guitars should not be confused with semi-acoustic guitars, which have pickups of the type found on solid-body electric guitars, or solid-body hybrid guitars with piezoelectric pickups.


Construction

Electric guitar design and construction vary greatly in the shape of the body and the configuration of the neck, bridge, and pickups. However, some features are present on most guitars. The photo below shows the different parts of an electric guitar. The headstock (1) contains the metal machine heads (1.1), which use a worm gear for tuning. The nut (string instrument), nut (1.4)—a thin fret-like strip of metal, plastic, graphite, or bone—supports the strings at the headstock end of the instrument. The frets (2.3) are thin metal strips that stop the string at the correct pitch when the player pushes a string against the fingerboard. The truss rod (1.2) is a metal rod (usually adjustable) that counters the tension of the strings to keep the neck straight. Position markers (2.2) provide the player with a reference to the playing position on the fingerboard. The neck (guitar), neck and fretboard (2.1) extend from the body. At the neck joint (2.4), the neck is either glued or bolted to the body. The body (3) is typically made of wood with a hard, polymerized finish. Strings vibrating in the magnetic field of the Pickup (music technology), pickups (3.1, 3.2) produce an electric current in the pickup winding that passes through the tone and volume potentiometer, controls (3.8) to the output jack. Some guitars have Piezoelectric pickup#Piezoelectric pickups, piezo pickups, in addition to or instead of magnetic pickups. Some guitars have a fixed
bridge A bridge is a structure built to span a physical obstacle (such as a body of water, valley, road, or rail) without blocking the way underneath. It is constructed for the purpose of providing passage over the obstacle, which is usually somethi ...
(3.4). Others have a spring-loaded hinged bridge called a ''whammy bar, vibrato bar'', ''tremolo bar'', or ''whammy bar'', which lets players bend notes or chords up or down in pitch or perform a
vibrato Vibrato ( Italian, from past participle of " vibrare", to vibrate) is a musical effect consisting of a regular, pulsating change of pitch. It is used to add expression to vocal and instrumental music. Vibrato is typically characterised in terms ...
embellishment. A plastic pickguard on some guitars protects the body from scratches or covers the control cavity, which holds most of the wiring. The degree to which the choice of woods and other materials in the solid-guitar body (3) affects the sonic character of the amplified signal is disputed. Many believe it is highly significant, while others think the difference between woods is subtle. In acoustic and archtop guitars, wood choices more clearly affect tone. Woods typically used in solid-body electric guitars include alder (brighter, but well rounded), swamp ash (similar to alder, but with more pronounced highs and lows), mahogany (dark, bassy, warm), Poplar tree, poplar (similar to alder), and basswood (very neutral).Warmoth Custom Guitars
(retrieved 16 December 2013)
Maple, a very bright tonewood, is also a popular body wood but is very heavy. For this reason, it is often placed as a "cap" on a guitar made primarily of another wood. Cheaper guitars are often made of cheaper woods, such as plywood, Pine wood, pine, or agathis—not true hardwoods—which can affect durability and tone. Though most guitars are made of wood, any material may be used. Materials such as plastic, metal, and even cardboard have been used in some instruments. The guitar output jack typically provides a monaural signal. Many guitars with active electronics use a jack with an extra contact normally used for Stereophonic sound, stereo. These guitars use the extra contact to break the ground connection to the on-board battery to preserve battery life when the guitar is unplugged. These guitars require a mono plug to close the internal switch and connect the battery to ground. Standard guitar cables use a High impedance, high-impedance mono plug. These have a tip and sleeve configuration referred to as a Phone connector (audio), TS phone connector. The voltage is usually around 1 to 9 millivolts. A few guitars feature stereo output, such as
Rickenbacker Rickenbacker International Corporation is a string instrument manufacturer based in Santa Ana, California. The company is credited as the first known maker of electric guitars – a steel guitar in 1932 – and today produces a rang ...
guitars equipped with ''Rick-O-Sound''. There are a variety of ways the "stereo" effect may be implemented. Commonly, but not exclusively, stereo guitars route the neck and bridge pickups to separate output buses on the guitar. A stereo cable then routes each pickup to its signal chain or amplifier. For these applications, the most popular connector is a high-impedance plug with a tip, ring, and sleeve configuration, also known as a Phone connector (audio), TRS phone connector. Some studio instruments, notably certain Gibson Les Paul models, incorporate a low-Electrical impedance, impedance three-pin XLR connector for balanced audio. Many exotic arrangements and connectors exist that support features such as MIDI, midi and Guitar synthesizer#Roland GK interface, hexaphonic pickups.


Bridge and tailpiece systems

The bridge and tailpiece, while serving separate purposes, work closely together to affect playing style and tone. There are four basic types of bridge and tailpiece systems on electric guitars. Within these four types are many variants. A stoptail bridge, hard-tail guitar bridge anchors the strings at or directly behind the bridge and is fastened securely to the top of the instrument. These are common on carved-top guitars, such as the Gibson Guitar Corporation, Gibson Les Paul and the PRS Guitars, Paul Reed Smith models, and on slab-body guitars, such as the Music Man (company), Music Man Albert Lee and Fender Musical Instruments Corporation, Fender guitars that are not equipped with a vibrato arm. A ''floating'' or ''trapeze'' tailpiece (similar to a violin's) fastens to the body at the base of the guitar. These appear on
Rickenbacker Rickenbacker International Corporation is a string instrument manufacturer based in Santa Ana, California. The company is credited as the first known maker of electric guitars – a steel guitar in 1932 – and today produces a rang ...
s, Gretsches,
Epiphone Epiphone is an American musical instrument brand that traces its roots to a musical instrument manufacturing business founded in 1873 by Anastasios Stathopoulos in Smyrna, Ottoman Empire, and moved to New York City in 1908. After taking over his f ...
s, a wide variety of archtop guitars, particularly jazz guitars, and the 1952 Gibson Les Paul. Pictured is a ''tremolo arm'' or ''Vibrato systems for guitar, vibrato tailpiece-''style bridge and tailpiece system, often called a ''whammy bar'' or ''trem''. It uses a lever ("vibrato arm") attached to the bridge that can temporarily slacken or tighten the strings to alter the musical pitch, pitch. A player can use this to create a vibrato or a portamento effect. Early vibrato systems were often unreliable and made the guitar go out of tune easily. They also had a limited pitch range. Later Fender designs were better, but Fender held the patent on these, so other companies used older designs for many years. With the expiration of the Fender patent on the Stratocaster-style vibrato, various improvements on this type of internal, multi-spring vibrato system are now available. Floyd Rose introduced one of the first improvements on the vibrato system in many years when, in the late 1970s, he experimented with "locking" nuts and bridges that prevent the guitar from losing tuning, even under heavy vibrato bar use. The fourth type of system employs string-through body anchoring. The strings pass over the bridge saddles, then through holes through the top of the guitar body to the back. The strings are typically anchored in place at the back of the guitar by metal ferrules. Many believe this design improves a guitar's sustain and timbre. A few examples of string-through body guitars are the Fender Telecaster Thinline, the Fender Telecaster Deluxe, the B.C. Rich IT Warlock and Mockingbird, and the Schecter Guitar Research, Schecter Omen 6 and 7 series.


Pickups

Compared to an acoustic guitar, which has a hollow body, electric guitars make much less audible sound when their strings are plucked, so electric guitars are normally plugged into a guitar amplifier and speaker. When an electric guitar is played, string movement produces a signal by generating (i.e., inductance, inducing) a small electric current in the magnetic pickups, which are magnets wound with coils of very fine wire. The signal passes through the tone and volume circuits to the output jack, and through a cable to an Guitar amplifier, amplifier. The current induced is proportional to such factors as string density and the amount of movement over the pickups. Because of their natural qualities, magnetic pickups tend to pick up ambient, usually unwanted electromagnetic interference or EMI. This mains hum results in a tone of 50 or 60 cycles per second depending on the Utility frequency, powerline frequency of the local alternating current supply. The resulting Hum (sound), hum is particularly strong with single-coil pickups. Double-coil or "humbucker" pickups were invented as a way to reduce or counter the sound, as they are designed to "buck" (in the verb sense of ''oppose'' or ''resist'') the hum, hence their name. The high combined inductance of the two coils also leads to the richer, "fatter" tone associated with humbucking pickups.


Guitar necks

Electric guitar necks vary in composition and shape. The primary metric of guitar necks is the ''scale length'', which is the vibrating length of the strings from nut to bridge. A typical Fender guitar uses a scale length, while Gibson uses a scale length in their ''Gibson Les Paul, Les Paul''. While the scale length of the Les Paul is often described as 24.75 inches, it has varied through the years by as much as a half inch. Frets are positioned proportionally to scale length—the shorter the scale length, the closer the fret spacing. Opinions vary regarding the effect of scale length on tone and feel. Popular opinion holds that longer scale length contributes to greater amplitude. Reports of playing feel are greatly complicated by the many factors involved in this perception. String gauge and design, neck construction and relief, guitar setup, playing style, and other factors contribute to the subjective impression of playability or feel. Necks are described as ''bolt-on neck, bolt-on'', ''set-in neck, set-in'', or ''neck-through'', depending on how they attach to the body. Set-in necks are glued to the body at the factory. This is the traditional type of joint. Leo Fender pioneered bolt-on necks on electric guitars to facilitate easy adjustment and replacement. Neck-through instruments extend the neck to the length of the instrument so that it forms the center of the body. While a set-in neck can be carefully unglued by a skilled luthier, and a bolt-on neck can simply be unscrewed, a neck-through design is difficult or even impossible to repair, depending on the damage. Historically, the bolt-on style has been more popular for ease of installation and adjustment. Since bolt-on necks can be easily removed, there is an after-market in replacement bolt-on necks from companies such as Warmoth and Mighty Mite. Some instruments—notably most Gibson models—continue to use set-in glued necks. Neck-through bodies are somewhat more common in bass guitars. Materials for necks are selected for dimensional stability and rigidity, and some allege that they influence tone. Hardwoods are preferred, with maple, mahogany, and ash (tree), ash topping the list. The neck and fingerboard can be made from different materials; for example, a guitar may have a maple neck with a rosewood or ebony fingerboard. Today there are expensive and budget guitars exploring other options for fretboard wood for instance ''Pau-Ferro'', both for availability and cheap price while still maintaining quality. In the 1970s, designers began to use exotic man-made materials such as 6061 aluminium alloy, aircraft-grade aluminum, carbon fiber, and Ebonol (material), ebonol. Makers known for these unusual materials include Veleno (guitar), John Veleno, Travis Bean, Modulus Guitars, Geoff Gould, and Alembic Inc, Alembic. Aside from possible engineering advantages, some feel that with the rising cost of rare tonewoods, man-made materials may be economically preferable and more ecologically sensitive. However, wood remains popular in production instruments, though sometimes in conjunction with new materials. Vigier Guitars, Vigier guitars, for example, use a wooden neck reinforced by embedding a light, carbon fiber rod in place of the usual heavier steel bar or adjustable steel truss rod. After-market necks made entirely from carbon fiber fit existing bolt-on instruments. Few, if any, extensive formal investigations have been widely published that confirm or refute claims over the effects of different woods or materials on the electric guitar sound. Several neck shapes appear on guitars, including shapes known as C necks, U necks, and V necks. These refer to the cross-sectional shape of the neck (especially near the nut). Several sizes of fret wire are available, with traditional players often preferring thin frets, and metal shredders liking thick frets. Thin frets are considered better for playing chords, while thick frets allow lead guitarists to bend notes with less effort. An electric guitar with a folding neck called the "Foldaxe" was designed and built for Chet Atkins by Roger C. Field.Cochran, Russ and Atkins, Chet (2003). ''Chet Atkins: Me and My Guitars'', Hal Leonard, p. 124, . Steinberger guitars developed a line of exotic, carbon fiber instruments without headstocks, with tuning done on the bridge instead. Fingerboards vary as much as necks. The fingerboard surface usually has a cross-sectional radius that is optimized to accommodate finger movement for different playing techniques. Fingerboard radius typically ranges from nearly flat (a very large radius) to radically arched (a small radius). The vintage
Fender Telecaster The Fender Telecaster, colloquially known as the Tele , is an electric guitar produced by Fender. Together with its sister model the Esquire, it is the world's first mass-produced, commercially successful Les Paul had built a prototype solid bo ...
, for example, has a typical small radius of approximately . Some manufacturers have experimented with fret profile and material, fret layout, number of frets, and modifications of the fingerboard surface for various reasons. Some innovations were intended to improve playability by ergonomic means, such as Warmoth Guitars' compound radius fingerboard. Scalloped fingerboards added enhanced Microtonal music, microtonality during fast legato runs. Multi-scale fingerboard#Fanned-fret_guitar, Fanned frets intend to provide each string with an optimal playing tension and enhanced musicality. Some guitars have Fretless guitar, no frets, while others, like the Gittler guitar, have no neck in the traditional sense.


See also

* List of electric guitar brands * Bass guitar * Bahian guitar * Distortion (guitar) * Effects pedal * Electric pipa * Electromagnetic induction * Electronic tuner * Guitar harmonics * Guitar synthesizer * Guitar amplifier * Keytar * List of guitars * List of guitarists * Pickup (music technology), Pickup * Sitarla * ''Stars and Their Guitars: A History of the Electric Guitar'' (documentary film) * Vintage guitar


References


Sources

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External links


ON! The Beginnings of Electric Sound Generation
– an exhibit at the Museum of Making Music, National Association of Music Merchants, Carlsbad, CA – some of the earliest electric guitars and their history, from the collection of Lynn Wheelwright and others
King of Kays
Vintage guitar's from America, Japan, and Italy. Pictures, history, and forums.

– Online exhibition at the Smithsonian Institution's National Museum of American History
Sweetwater Sound , Who Invented the Electric Guitar?
— A chronological exploration of the development of the electric guitar from 1890 to 1952, including contributions from Rickenbacker, Bigbsy, Fender, and Gibson. {{DEFAULTSORT:Electric Guitar Electric guitars, 1931 musical instruments Amplified instruments Rock music instruments Jazz instruments Blues instruments American musical instruments American inventions Rhythm section