(14-08-2010, 22:18)นริศ วงษ์เวช Wrote: กีต้าร์ 12 สาย ตั้งสายอย่างไร ครับ ปกติแล้ว เส้นใหญ่อยู่หน้า หรืออยู่หลังครับ
แล้วควร ใช้ สายเบอร์อะไร ครับ
Dear Naris,
I extracted this from "Wikipedia", I personally don't like to own it, but don't mind to play it
The strings are placed in courses of two strings each that are usually played together. The two strings in each bass course are normally tuned an octave apart, while each pair of strings in the treble courses are tuned in unison. The tuning of the second string in the third course (G) varies: some players use a unison string while others prefer the distinctive high-pitched, bell-like quality an octave string makes in this position. Some players, either in search of distinctive tone or for ease of playing, will remove some of the doubled strings. For example, removing the higher octave from the three bass courses simplifies playing running bass lines, but keeps the extra treble strings for the full strums.
The strings are generally arranged such that the first string of each pair to be struck on a downward strum is the higher octave string; however, this arrangement was reversed by Rickenbacker on their electric 360/12.
The tension placed on the instrument by the strings is high, and because of this, 12 string guitars have a reputation for warping after a few years of use. Some twelve-string guitars have non-traditional structural supports to prevent or postpone such a fate, at the expense of appearance and tone. Until recently, twelve-string guitars were nearly universally tuned lower than the traditional EADGBE, to reduce the stresses on the instrument. Leadbelly may have used a low C-tuning.[1]
Some performers prefer the richness of an open tuning due to its near-orchestral sound. For a very complex plucked-string sound, the 12-string can be set to standard tuning (or possibly an octave lower), then the top one and low two string pairs can be tuned to whole-tone intervals. The usual gamut of guitar tunings are also available. Many performers who play the twelve-string guitar use an ordinary six-string guitar as their primary instrument, switching to the twelve-string guitar for certain songs that seem to call for a brighter sound.
Because it is substantially more difficult to pluck individual strings on the twelve-string guitar, and almost impossible to bend notes tunefully, the instrument is rarely used for lead musical parts. 12-string guitar is however primarily suited to a rhythm or accompaniment role and is often used in folk songs and some popular music. Some hard rock and progressive rock musicians use double-necked guitars, which have both six-string and twelve-string components, allowing the guitarist easy transition between different sounds.
The greater number of strings complicates playing, particularly for the plucking (or picking) hand. The gap between the dual-string courses is usually narrower than that between the single-string courses of a conventional six-string guitar, so more precision is required with pick or fingertip when not simply strumming chords. The pairing of thin, easily broken octave strings with larger, stiffer bass strings presents difficulties to the player also, and only a very skilled player can reliably pluck single strings from within a course at any speed (notably the very high octave G string, which is the highest-pitched string on the instrument). Nevertheless, with practice, the twelve-string guitar is not unduly difficult to play. It is, however, generally used in a fairly restricted role that emphasizes its strengths: rich ringing, full-bodied chords, and fast, rippling single plucked notes on the twinned strings. Twelve-string guitars are made in both acoustic and electric form. However, it is the acoustic type that is most common.
Hope this help
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