Gibson 1550-07 GUS, Руководство пользователя

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Volume controls: The two knobs closest to the fingerboard control the volume of the pickups.
The volume knob nearest the bridge controls the “front” or neck pickup; the knob nearest the
edge of the guitar controls the “back” or bridge pickup.
Tone controls: The knob or knobs farthest away from the fingerboard control tone. The tone
knob nearest the bridge controls the “front” or neck pickup; the knob nearest the edge of the
guitar controls the “back” or bridge pickup.
The tone controls are the “treble roll off” or “cut” variety. The tonal quality of the instrument
is darkened by the reduction of treble rather than the addition of bass. The tone control turned
all the way counterclockwise results in maximum reduction of treble and produces the “dark-
est” sound. The tone control turned clockwise to its maximum position allows the pickup’s full
harmonic frequencies to pass through, producing the guitar’s brightest sound.
Pickup selector switch: The selector switch has three positions. The up position selects only
the “front” or neck pickup. The down position selects only the “back” or bridge pickup. The
middle position engages both pickups. The tone and volume controls will only be active when
the corresponding pickup is selected. On models with three pickups, the selector switch
activates the front pickup (front position), the middle and back pickup together (middle
position), and the back pickup (back position).