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F
P
I S H M A N
O W E R B R I D G E
Passive Setup
Stereo Output Jack
(Tip/Ring/Sleeve)
Powerbridge™ Signal
Pure Magnetic Signal
(Ring)
(Tip)
Active
D.I.
PA / Recording Console
Electric Guitar Amp
• Active Setup - Powerchip™
With our onboard Powerchip™, you can mix and combine both the Powerbridge™
and magnetic pickups (on the guitar) and plug right into a single channel guitar
amplifier. You can also instantly split signals by simply changing to a stereo cable or
stereo "Y" cable.
See the Powerbridge™ System Users Guide
for Powertronics™ descriptions.
Active Setup
Powerchip™
Mono Instrument Cable
™
P
I
I C K U P
N S T A L L A T I O N
Bridge Installation
FIG 1 - Existing Pivot Screws
Use Existing Inserts
and Pivot Screws
If you have a Fender
American Standard
Strat
(knife-edge vibrato)
style
P o w e r b r i d g e ™
Pickup is a direct
replacement.
See Fig. 1
•
Instrument Builders
Refer to the enclosed Routing Template to locate the brass
inserts.
•
Routing the Powerbridge™
Pickup Wire
• With a 3/32" (2.4mm) aircraft bit, drill a hole from the vibrato
cavity to the control cavity.
• Route the Powerbridge™ Pickup wire through this hole. See
Fig. 2
If you prefer, you may route the Powerbridge™ Pickup wire
through the guitar's ground wire channel. If you do so, secure
the Powerbridge™ Pickup wire so that it cannot be pinched by
the springs or the bridge block.
FIG 2 - Hole for Powerbridge™ Signal Wire
(2.4 mm) Hole
from Vibrato Cavity
to Control Cavity
Wiring Instructions
G
U I D E
• Preliminary Notes
To prevent 60 Hz hum, the entire Powerbridge™ Pickup signal path should be fully shielded. The control cavity, jack cavity, and any non-conductive
surface to which the controls are mounted (such as a plastic pickguard) must be shielded with adhesive-backed foil or conductive paint. The
shielded cavities should then be grounded.
For complete hum prevention, the included stereo jack must also be shielded. To do this, we've included a piece of shielding foil. Note that one
side is insulated. After you have soldered the wires to the jack, roll the foil into a tube so that the insulation is on the INSIDE and surround the
stereo jack with the tube. Connect the foil side of the tube to ground by soldering it to the shielding of the Powerbridge™ Pickup wire or to a jumper
that is connected to any ground.
®
If your instrument has active magnetic pickups (requiring an onboard battery), you will need a special 9 Pin Switching Jack (Fishman Part Number
ACC-PBR-9PJ), available through your Fishman dealer.
®
or Strat Plus
®
• Install the Stereo Jack
guitar,
the
The jack can fit into the jack cavity without removing wood ...
1 Bend the terminals of the included stereo jack toward its center.
See Fig 3
2 Rotate the jack to locate the Tip terminal exactly at the upper left side of
the jack plate recess.
See Fig 4
• Wiring Options
There are several different ways to wire the Powerbridge™.
Choose the option that best suits your needs.
Powerbridge™ & Magnetic Pickups
wired directly to a Stereo Jack
1. Connect the Powerbridge™ signal wire directly to the Ring terminal on the
supplied stereo jack.
2. Connect the Powerbridge™ and magnetic grounds to the Sleeve terminal.
3. Connect the magnetic signal wire to the Tip terminal.
4. Connect the included 5 M
Passive Volume for the Powerbridge™
This circuit that is easily assembled from "stock" guitar pots and components
available at any electronics parts retailer.
You will need:
• 250 k audio taper pot
• 330 k resistor
• 820 pF capacitor
• 1500 pF capacitor
This network will attenuate the Powerbridge™ so that it better matches levels
between magnetic and piezo pickups. You can expect a 14 dB (nominal)
decrease in Powerbridge™ output with this circuit.
NOTE: Optional 3-Way Selector Switch - If desired, a
single pole, double throw (spdt) 3-way switch can also be added for
piezo/magnetic pickup selection. Use a switch with an ON-OFF-ON
Drill 3/32"
orientation (no, this is not a misprint)
NOTE: Active Onboard Blending
A Fishman Powerchip™ (not included) must be installed if you wish
to blend/mix piezo and magnetic signals onboard the instrument.
FISHMAN TRANSDUCERS
340-D Fordham Road Wilmington MA 01887 USA
Phone 978-988-9199 • Fax 978-988-0770
www.fishman.com
FIG 3 - Bend Jack Terminals
resistor between the ring and sleeve terminals.
820 pF
®
Magnetic Signal
®
FIG 4 - Align Tip Terminal
Magnetic
Signal
Powerbridge™
Magnetic
Volume
Optional 3-Way
Selector Switch
Both
5Meg
Sleeve
Mag
Piezo
Resistor
Tip
Ring
ON
OFF
ON
Stereo Jack
Direct Wiring
250K - 300K
Audio T aper Pot
Optional 3-Way
Selector Switch
Both
330 K
Mag
Piezo
Sleeve
Ring
1500 pF
1500 pF
O
O
O
Tip
F
N
N
F
Stereo
Output
Jack
Passive Volume
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