Fishman FLUENCE Manuel utilisateur
Phase Invert Control with Push-Pull Potentiometer
Rev1.0
The Fluence Phase Invert Control enables a guitar to achieve the distinct tone of using two pickups “out-of-
phase” with each other. Engaging the pull-switch on the control pot inverts the phase/polarity of one pickup
relative to the other.
The rotary function of the pot can be wired several different ways to accommodate any control layout. The
three wiring options are a volume control, standard tone control, or reactive tone using the Fluence Tone
Reactor accessory.
A trim control is provided to fine adjust the volume blend between pickups when phase invert is engaged. This
allows dialing in the preferred sweet spot on guitars without separate pickup volume controls. The trim control
range is -2dB to +3dB with the middle position being 0dB (no change in level) for the pickup being phase
inverted.
Electrical Specifications
Power Source: 9-18Vdc
Current Consumption: 0.8mA @9Vdc
Input Impedance: 270k
Output Impedance: 2k
Volume/Tone Pot: 25k
Phase Invert Control with Push-Pull Potentiometer
Quick Reference - 3 Ways to Configure Potentiometer Rotary Function
.15uF
Solder
0.15uF
Capacitor
“154”
Tone
Reactor
Volume Standard
Tone
Reactive
Tone
Apply Solder to
Connect Pads
for Volume
Function
Phase Invert Control with Push-Pull Potentiometer - Connection Points, Controls, & Functions
1
2
10
9
8
7
6
5
4
3
Push-Pull Pot - Pull for Phase Invert
Volume/Tone IN
Volume/Tone OUT
Pickup Phase OUT
+9V-18V IN/OUT
Ground
Pickup Ground
Pickup Phase IN
Phase Invert Trim
Pot Function
Solder Pads
Note: All connections points (except the Pot Function Pads) are plated through-hole
style such that wires cab be inserted and soldered from either side.
1. Push-Pull Pot - The rotary function of the pot can be wired for several functions;
volume, standard tone control, and reactive tone control. (see diagrams for details)
Pulling up on the shaft engages the pickup phase invert feature. Pushing the shaft
down into the default position bypasses the phase invert.
2. Volume/Tone IN - Signal input for volume or reactive tone control. (Not used for
standard tone control.)
3. Volume/Tone OUT - Signal output for volume or reactive tone control. Main
connection for standard tone control.
4. Pickup Phase OUT - The pickup output from the phase select circuit.
5. +9V-18V IN/OUT - (+) DC Power / Battery input for inverter circuit. Two additional
connections are provided for convenient power distribution to active pickups.
6. Ground - Connection to main control cavity ground.
7. Pot Function Solder Pads - Solder pads for setting potentiometer control function.
Volume: Bridge pads with solder.
Standard Tone: Solder 0.15uF capacitor across pads. (see diagrams)
Reactive Tone: (Pads not used) Requires tone reactor accessory (see diagrams)
8. Phase Invert Trim - Fine gain adjustment for achieving preferred blend tone in
phase invert mode. Adjust to taste when using two pickups in combination. Range is -
2dB to +3dB.
9. Pickup Phase IN - Input for the pickup to phase selected.
10. Pickup Ground - Ground connection for the pickup input cable shield.
“224”
.22uF
25k
Phase Invert Control with Push-Pull Potentiometer
Basic Wiring Example - Phase Invert as Volume Control
Neck
Volume IN
Volume OUT
Bridge
Neck Pickup Bridge Pickup
Both
Output
Jack
9V Battery
Ring
Tip
Sleeve
(-)
(+)
Tone
Volume,
Pull for
Neck Pickup
Phase Invert
Neck Pickup Output
to Phase Inverter
Bridge Pickup Output
Neck +9-18V
Pickup
Voice-2
Wires
Pull for
Voice-2
Invert
Trim
Toggle Switch Style
Pickup Selector
Bridge +9-18V
Apply Solder to
Connect Pads
for Volume
Function
25k
Phase Invert Control with Push-Pull Potentiometer
Basic Wiring Example
Phase Invert as Standard Tone Control
Neck
Bridge
Neck Pickup Bridge Pickup
Both
Output
Jack
9V Battery
Ring
Tip
Sleeve
(-)
(+)
Neck Pickup Output
to Phase Inverter
Bridge Pickup Output
Bridge +9-18V
Neck
+9-18V
Pull for
Voice-2
Bridge Ground
Toggle Switch Style
Pickup Selector
“154”
.15uF
Pickup
Voice-2
Wires
Volume
Tone,
Pull for
Neck Pickup
Phase Invert
.15uF
Solder
0.15uF
Capacitor
as Shown.
Invert
Trim
25k
Phase Invert Control with Push-Pull Potentiometer
Basic Wiring Example
Phase Invert as Reactive Tone Control
Neck
Bridge
Neck Pickup Bridge Pickup
Both
Output
Jack
9V Battery
Ring
Tip
Sleeve
(-)
(+)
Neck Pickup Output
to Phase Inverter
Bridge Pickup Output
Pull for
Voice-2
Bridge Ground
Toggle Switch Style
Pickup Selector
Pickup
Voice-2
Wires
Volume
Tone,
Pull for
Neck Pickup
Phase Invert
Tone
Reactor
Neck
+9-18V
Bridge +9-18V
Invert
Trim
(-)
Push
25k
Log
Push-Pull
Pot
Pickup
IN
Pickup
OUT
VT-IN
Pot
Function
Solder
Pads
VT-OUT
GND
GND+9V IN/OUT
Pull for
Phase
Invert
(+)
Phase Invert
Trim
-2dB to +3dB
.047uF
Phase Control - Functional Diagram and Connections
(Standard Capacitor Value
for Reactive Tone Control)
25k
Log
.047uF
VT-IN
VT-OUT
(Not Used)
Tone Wire
0.15uF Capacitor “154”
for 0.2uF Total
Pot Wired for Standard Tone Control
0.15uF
25k
Log
.047uF
VT-IN
VT-OUT
Tone IN
Tone OUT
Pot Wired for Reactive Tone Control
Tone
Reactor
Fluence Phase Control with Push-Pull Potentiometer - Functional Schematic Diagrams
25k
Log
VT-IN
VT-OUT
IN
OUT
Bridge with Solder
for Volume function.
(Located next to
trim pot)
Pot Wired for Volume Control
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