The fan allows for a long bass string and a short treble string.
Bass strings benefit from long scales, it increases clarity as shown in the clip in this thread of a 27 vs a 29.4 inch scales http://www.sevenstring.org/forum/ex...ignature-lotsa-pics-tone-comparison-clip.html through reduced inharmonicity - the degree to which the frequencies of overtones are out of tune from the fundamental. http://www.sevenstring.org/forum/extended-range-guitars/10064-string-gauges-inharmonicity.html For a low F#1, a 30 inch scale will have 32% better harmonic content and 15% more tension than 28 inch scale guitar. This extra harmonic content results in a brighter clearer sound, but the brightness is not can't really be dialed in with a EQ, It's different kinda like a blurry photo, there's really not a way to bring it back into focus after the fact.
Also, there is a limit as to how long a scale can be for the high strings, too long and the string will break before it gets to the desired pitch, somewhere around 31.7 to 33.7 inches for high E4. Also, the high strings are harder to get full step bends as the scale length increases. A multiscale can be easier to play bar chords on with the shorter treble side too. some also like the sound of a shorter treble string.
Bass strings benefit from long scales, it increases clarity as shown in the clip in this thread of a 27 vs a 29.4 inch scales http://www.sevenstring.org/forum/ex...ignature-lotsa-pics-tone-comparison-clip.html through reduced inharmonicity - the degree to which the frequencies of overtones are out of tune from the fundamental. http://www.sevenstring.org/forum/extended-range-guitars/10064-string-gauges-inharmonicity.html For a low F#1, a 30 inch scale will have 32% better harmonic content and 15% more tension than 28 inch scale guitar. This extra harmonic content results in a brighter clearer sound, but the brightness is not can't really be dialed in with a EQ, It's different kinda like a blurry photo, there's really not a way to bring it back into focus after the fact.
Also, there is a limit as to how long a scale can be for the high strings, too long and the string will break before it gets to the desired pitch, somewhere around 31.7 to 33.7 inches for high E4. Also, the high strings are harder to get full step bends as the scale length increases. A multiscale can be easier to play bar chords on with the shorter treble side too. some also like the sound of a shorter treble string.