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An extended-range bass is an electric bass guitar with a greater frequency range than a standard-tuned four-string bass guitar. One way that a bass could be considered 'extended-range' is to utilize a tuning peg that allows for instant re-tuning, such as the popular 'Xtenders' made by Hipshot, however it is more so those bass guitars that have a low-B string such as the five string bass guitar and/or a high C-string - the six string bass guitar - that are most normally considered extended-range bass guitars. Basses have been made with seven, eight, nine, or even fifteen strings with extremely wide necks and custom pickups. These too are considered extended-range basses. Michael Manring's 'Hyperbass' by Zon guitars and Les Claypool's main Carl Thompson piccolo bass are both four string basses but with necks that exceed the standard 24 frets (24 being the 'standard' for most commercially available bass guitars). Les Claypool's piccolo bass has 32 frets whereas Manring's Hyper Bass is a fretless instrument (however if it were a fretted bass it too would also exceed the 24th fret). "Extended-range bass" does not refer to bass guitars with double or triple courses of strings such as the eight-string bass guitar or twelve-string bass, both of which could be considered as standard four string basses but with the addition of piccolo bass strings, tuned in octaves. These strings are generally played in unison with the bass strings, thereby producing a natural chorus effect. The Ibanez Ashula bass guitar, though having six strings, would also not be considered as an extended-range bass because the first four strings - E A D G - lie over a section of the fretboard that has frets whereas the last two strings are - D & G again - lie over a fretless part of the same fretboard. == History == Pat Fairley of Marmalade changed from playing rhythm guitar to a 6-string bass in 1965/6, the band then had two bass guitarists, the other being a 4 string played by Graham Knight. In 1975, Anthony Jackson asked Carl Thompson to build him a six-string bass guitar tuned (from low to high) BEADGC, which he called the contrabass guitar. Jackson's bass extended the range of the bass both lower and higher than a four-string. Though Jackson initially received much criticism for the new instrument, the deep sounds of the low "B" string has become a standard in many genres including metal, R&B, funk, gospel and now country. In the late 1980s, luthier Michael Tobias made the first bass with more than six single course strings, a custom order seven string bass for bassist Garry Goodman, tuned BEADGCF. In 1988, Atlanta luthier Bill Hatcher also made a seven string bass tuned EADGBEA and later tuned BEADGBE. This bass can be verified with serial number and date on it. Since that time, luthiers have been adding strings to their custom basses. In 1995, luthier Bill Conklin made a nine-string bass for Bill "Buddha" Dickens and in 1999 luthier Alfonso Iturra made an eight-string bass for Igor Saavedra.〔http://bassmusicianmagazine.uberflip.com/i/147647 Cover Interview to Igor Saavedra made by Bass Musician Magazine, August 2013 6th Anniversary Edition.〕 Subsequently, other luthiers built instruments with up to twelve strings. Custom bass builders have added both lower strings (such as F# and C#) and higher strings (such as F and B♭) to the six-string bass guitar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Extended-range bass」の詳細全文を読む スポンサード リンク
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