Piezo Sensitivity Adjustments
The piezo pickup responds to individual string vibrations. However, different
string gauges and player techniques can cause individual string outputs to
sound uneven. To handle these variations, the EQA-PZ system allows the
piezo pickup sensitivity for each string to be adjusted so string-to- string
output levels can be properly balanced.
1) Set the Piezo Volume Knob all the way up and the Piezo Treble EQ Knob to
its center position. Internally adjust the Piezo Bass EQ trim 3to the center.
2) Using a small screwdriver, adjust the
Piezo Sensitivity Trims 1individually to
balance the output level of each string.
3) Turning the Trim Pot clockwise will
increase the output level. Turning the
Trim Pot counterclockwise decreases
the output level.
Note: If one string seems to have less output,
adjust that string’s trim pot all the way up, then
turn the rest of trims counterclockwise to
balance the output level.
The EQA-PZ system was designed to allow bassists to achieve various sound
possibilities by combining a magnetic pickup with the FISHMAN® Piezo-
equipped Mono-Rail Bass Bridge.
In addition to the Piezo Volume Knob and the Piezo Treble EQ Knob on the
surface of the instrument, advanced adjustments can be fine-tuned by
utilizing the following trim pots located inside the control cavities:
1Piezo Sensitivity Trims for individual string outputs.
2Piezo Output Trim to balance the master piezo signal with the magnetic
pickup.
3Piezo Bass EQ Trim.
EQA-PZ System
Battery
The battery should be changed when the volume becomes low or the sound
becomes distorted. Use a new 9-volt alkaline (not lithium or carbon) battery.
The battery is stored inside control cavity (D). Inserting a plug into the jack
activates the power supply. Be sure to disconnect the cord when the bass is
not in use; this will prevent the battery from draining.
(D)
Balancing The Piezo Signal Output Level With The Magnetic Pickup.
To utilize both the magnetic pickup and piezo pickup sounds, the piezo
output level can be adjusted by a Trim Pot 2.
1) To determine output level of the Magnetic Pickup, set the Magnetic Pickup
volume at 10, the Magnetic EQ at center and the Piezo Volume at 0. If
needed, adjust the overall height of the Magnetic Pickup.
2) After the Magnetic Pickup height is determined, turn the Magnetic Pickup
Volume back to 0 and the Piezo Volume up to 10, and then listen to the
output level balance of both pickups.
3) If the Magnetic Pickup output level is louder than the piezo, turn the Piezo
Output Level Trim clockwise to increase the signal output level. To decrease
the piezo signal output level, turn the trim pot counterclockwise.
