G U I T A R S
G U I T A R S
19
18
ZP-3D continued
Internal Controls
The following controls are located inside the bass’ control cavity. You
will need to remove the rear cover plate to adjust them.
Magnetic Pickup EQ
Midrange switch.
Select from 150 Hz, 250 Hz, 400 Hz, or 700 Hz as
the center frequency from which to boost or cut.
High frequency switch.
Select from 1.5kHz, 3.0kHz, 4.5kHz, or
7.0kHz as the center frequency from which to boost or cut.
Midrange control.
15dB boost or cut of midrange at a center frequency
selected by the midrange switch position. Turning the control clockwise
boosts the mids. Turning the control counterclockwise cuts the mids.
The midpoint in the control’s sweep is the “flat” position, zero boost or cut.
Piezo EQ
P level.
Piezo gain control. Turn control up or down to adjust the ratio of
piezo output to magnetic output.
P bass.
Bass gain control. Turning the control clockwise
increases bass, turning the control counterclockwise decreases bass.
P treble.
Treble gain control. Turning the control clockwise increases
treble, turning the control counterclockwise decreases treble.
9-V
olt Batter
y
MID
700
400
250
150
HI
7.0k
4.5k
3.0k
1.5k
MAG MID
P TREBLE
P LEVEL
P BASS
Internal magnetic midrange control
Treble switch
Midrange switch
Piezo
treble
control
Piezo gain control
Piezo
bass
control
