Single coil guitar pickup

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A typical single coil guitar pickup: copper wire wrapped around a bobbin which holds magnetic pole pieces adjacent to a magnet. Strat serie L.jpg
A typical single coil guitar pickup: copper wire wrapped around a bobbin which holds magnetic pole pieces adjacent to a magnet.
String effect on a single coil (electric guitar). The coil is connected to a multimeter that indicates the voltage changes when the string moves. This signal is normally sent to an amplifier. Single coil string anim.gif
String effect on a single coil (electric guitar). The coil is connected to a multimeter that indicates the voltage changes when the string moves. This signal is normally sent to an amplifier.

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 popular designs, along with dual-coil or "humbucking" pickups.

Contents

History

Beauchamp

Sketch of Rickenbacker "frying pan" lap steel guitar from 1934 patent application RickenbackerFryingpanPatentDiagram.png
Sketch of Rickenbacker "frying pan" lap steel guitar from 1934 patent application

In the mid-1920s George Beauchamp, a Los Angeles, California guitarist, began experimentation with electric amplification of the guitar. Originally using a phonograph pickup assembly, Beauchamp began testing many different combinations of coils and magnets trying to create the first electromagnetic guitar pickup. [1] His earliest coils were wound using a motor from a washing machine. Later on he switched to a sewing machine motor, and eventually used single coiled magnets.

Beauchamp was backed in his efforts by Adolph Rickenbacker, an engineer and wealthy owner of a successful tool and die business. Beauchamp eventually produced the first successful single coil pickup. The pickup consisted of two massive U-shaped magnets and one coil and was known as the "horseshoe pickup". [1] The two horseshoe-shaped magnets surrounded the strings that passed over a single core plate (or blade) in the center of the coil.

Gibson

The Gibson Guitar Corporation introduced the "bar pickup" in 1935 for its new line of Hawaiian lap steel guitars. The pickup's basic construction is that of a metal blade inserted through the coil as a shared pole piece for all the strings. A pair of large flat magnets were fastened below the coil assembly.

In 1936 Gibson introduced the ES-150, its first electric Spanish styled guitar. [2] The ES-150 was outfitted with the bar pickup. Jazz guitar innovator, Charlie Christian, began playing an ES-150 in the late 1930s with the Benny Goodman Orchestra. This caused the popularity of the electrified guitar to soar. Due to Christian's close association with the ES-150 it began being referred to as the "Charlie Christian Model" and Gibson's now famous bar pickup as the "Charlie Christian pickup" [3] or "CC unit".

Common designs

Gibson P-90

Gibson P-90 soap bar P90 soapbar.jpg
Gibson P-90 soap bar

The P-90 is a single coil pickup designed by the Gibson Guitar Corporation. [4] [5] These pickups have a large, flat coil with adjustable steel screws as pole pieces, and a pair of flat alnico bar magnets lying under the coil bobbin. The adjustable pole pieces pick up the magnetism from the magnets. Moving the screw closer or further away from the magnet determines signal strength, thus tone as well. There are two variations of P-90 pickup that differ mainly by mounting options:

P90 dog ear Gibson P90 dogear.jpg
P90 dog ear

Telecaster design

Two pickups on a Telecaster 1966 Fender Telecaster (SN159266) body (cropped).jpg
Two pickups on a Telecaster

The Fender Telecaster features two different single coils. The neck pickup features a metal cover and produces a mellower sound, while the bridge pickup has exposed pole pieces and produces an extremely twangy, sharp tone with exaggerated treble response, [4] because the bridge pickup is mounted on a steel plate. These design elements allow musicians to emulate steel guitar sounds, making it particularly appropriate for country music.

Pickups are selected with a three-position switch, and two wiring schemes exist:

The Fender Esquire has a variation to the Vintage wiring scheme by using the scheme on a single pickup. This gives a treble cutoff in the first position, normal in the middle position, and a tone control cutoff in the third position.

Stratocaster design

This image shows three single coil pickups on a Stratocaster guitar. Left to right: bridge, middle and neck pickups. Stratocaster pickups.jpg
This image shows three single coil pickups on a Stratocaster guitar. Left to right: bridge, middle and neck pickups.

The traditional Stratocaster design guitar features three single coils. [4] The guitarist can control which pickup or combination of pickups are selected with a lever switch. The pickup positions are usually referred to as the bridge, middle and neck pickups based on their proximity to those parts of the instrument. The neck pickup typically has the lowest output, with the most mid-range and bass response, whereas the bridge pickup has the higher output (because the strings at the bridge move less) and the greatest treble response, with a slight twang to it. The sound of the middle pickup is similar to that of the neck pickup, albeit with slightly less bass and more treble. However many players, such as Ritchie Blackmore, find it somewhat of an obstruction to the picking hand and loosen the mounting screws such that it lies flush with the pickguard.

Modern Stratocasters have five-position pickup selector switch. Positions 1, 3 and 5 activate only one pickup (bridge, middle or neck respectively), while positions 2 and 4 activate a combination of two pickups (bridge and middle, or middle and neck, respectively). Some pickup sets have a reverse wound and reverse polarity middle pickup that when in combination with the normal bridge or neck pickups will cancel electromagnetic interference (noise/hum) which single coil pickups suffer badly from. The sonic effect of positions 2 and 4 is sometimes referred to as a "quack" or "notch positions", and some guitar notation includes directions to use these pickup combinations. One example is "Sultans of Swing" by Dire Straits which is played in position 2 (bridge and middle).

Noise problems

Two types of noise afflict magnetic guitar pickups. Hum is caused by magnetic fields due to power frequency currents in electrical equipment, whereas buzz is propagated as radio transmissions and sounds more like static. The sources of buzz are many, but one example is an AC power tool with a brush motor. The brush makes and breaks electrical contact with the commutator segment several thousand times a second at variable frequency dependent on load thus causing radio frequency noise.

The search for an acceptable solution to mains hum gained new impetus around 1995 as guitar players became increasingly intolerant of degraded stacked single-coil sound. Fender was researching new techniques to solve the loss of tone around that time and eventually came out with their Fender Noiseless Pickups design around 1998. [6]

Notable single coil pickups

There are several well-known single coil pickups that have a distinctive sound:

"Lipstick"-style single coil pickups on a Danelectro guitar Lipstick2.jpg
"Lipstick"-style single coil pickups on a Danelectro guitar

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<span class="mw-page-title-main">Guitar</span> Fretted string instrument

The guitar is a stringed musical instrument, that is usually fretted and typically has six or twelve 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 strings against frets with the fingers of the opposite hand. A guitar pick may also be used to strike the strings. The sound of the guitar is projected either acoustically, by means of a resonant hollow chamber on the guitar, or amplified by an electronic pickup and an amplifier.

<span class="mw-page-title-main">Humbucker</span> Electric guitar pickup

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<span class="mw-page-title-main">Gibson ES-150</span> Electric Guitar

The Gibson ES-150 is a pioneering semi-acoustic electric guitar produced by Gibson Guitar Corporation. Introduced in 1936, it is generally recognized as the world's first commercially successful Spanish-style electric guitar. The ES stands for Electric Spanish, and Gibson designated it "150" because they priced it at around $150. The particular sound of the instrument came from a combination of the specific bar-style pickup and its placement, and the guitar's overall construction.

<span class="mw-page-title-main">Fender Stratocaster</span> Solid body electric guitar

The Fender Stratocaster, colloquially known as the Strat, is a model of electric guitar designed between 1952 and 1954 by Leo Fender, Bill Carson, George Fullerton, and Freddie Tavares. The Fender Musical Instruments Corporation has continuously manufactured the Stratocaster since 1954. It is a double-cutaway guitar, with an extended top "horn" shape for balance. Along with the Gibson Les Paul, Gibson SG, and Fender Telecaster, it is one of the most-often emulated electric guitar shapes. "Stratocaster" and "Strat" are trademark terms belonging to Fender. Guitars that duplicate the Stratocaster by other manufacturers are sometimes called S-Type or ST-type guitars.

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A pickup is a transducer that captures or senses mechanical vibrations produced by musical instruments, particularly stringed instruments such as the electric guitar, and converts these to an electrical signal that is amplified using an instrument amplifier to produce musical sounds through a loudspeaker in a speaker enclosure. The signal from a pickup can also be recorded directly.

A vibrato system on a guitar is a mechanical device used to temporarily change the pitch of the strings. They add vibrato to the sound by changing the tension of the strings, typically at the bridge or tailpiece of an electric guitar using a controlling lever, which is alternately referred to as a whammy bar, vibrato bar, or tremolo arm. The lever enables the player to quickly and temporarily vary the tension and sometimes length of the strings, changing the pitch to create a vibrato, portamento, or pitch bend effect. Instruments without a vibrato have other bridge and tailpiece systems.

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<span class="mw-page-title-main">Fender Esquire</span> Solid-body electric guitar manufacturer by Fender

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<span class="mw-page-title-main">P-90</span> Guitar pickup

The P-90 is a single coil electric guitar pickup produced by Gibson Guitar Corporation since 1946, as well as other vendors. Compared to other single coil designs, such as the ubiquitous Fender single coil, the bobbin for a P-90 is wider but shorter. The Fender style single coil is wound in a taller bobbin, but the wires are closer to the individual poles. This makes the P-90 produce a different type of tone, somewhat warmer with less edge and brightness. As with other single-coil pickups, the P-90 is subject to mains hum unless some form of hum cancellation is used.

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<span class="mw-page-title-main">EMG 85</span>

The EMG 85 is a popular active humbucker guitar pickup manufactured by EMG, Inc. It is paired with the 81 in the Zakk Wylde signature EMG set. It was originally designed to be used in the bridge position but is typically installed in the neck position by modern guitar producers.

<span class="mw-page-title-main">Fender Wide Range</span>

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<span class="mw-page-title-main">Fender Noiseless Pickups</span>

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References

  1. 1 2 Duchossoir 1998 , p. 12
  2. Duchossoir 1998 , p. 15
  3. Batey 2003 , p. 91
  4. 1 2 3 Hirst 2003 , p. 24
  5. Hunter, Dave (November 10, 2017). "Gibson's Growling Glory: 70 Years of P-90 Tone". Gibson. Retrieved August 20, 2022.
  6. Cobham, Steve (June 1997). "NECK AND NECK - Gibson Les Paul and Fender Strat Compared". Sound on Stage. Archived from the original on April 21, 2013.
  7. Smith, Richard R. (1987). The History of Rickenbacker Guitars. Centerstream Publications. pp. 9–14, 135. ISBN   0-931759-15-3.
  8. Batey 2003 , p. 124
  9. "Dynasonics products" . Retrieved March 5, 2014.

Bibliography