Fishman POWERMIX User manual
PowerMix
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OWNER’S MANUAL
Thank you for purchasing this accessory for the Fishman Powerbridge
System. We are confident that the PowerMix preamp will greatly enhance the
performance and utility of your Powerbridge system. Please read these
instructions carefully. If you have any questions or problems, you can contact
Fishman Customer Service at 978-988-9665.
The PowerMix answers the requests from musicians for a compact outboard
preamp, dedicated to mixing and combining piezo and magnetic electric
guitar pickups. Optimized piezo EQ, phase switch as well as output options
provide the missing link for the piezo/magnetic pickup signal chain.
Features
1 • Battery Compartment
2 • AC Adapter Input
3 • Mix Output Jack
4 • Piezo Input Jack
5 • Mag/Stereo Input Jack
6 • Piezo Phase Switch
7 • Low Battery LED
8 • Volume Control
9 • Bass Control
10 • Midrange control
11 • Treble Control
PowerMix
2
Piezo/Magnetic Outboard Mixing Preamp
3
Preparing Your Instrument
Before you begin using your PowerMix, you need to have the magnetic and
Powerbridge pickups in place on your guitar.
Wire the guitar to a stereo output jack as follows:
1-Route the magnetic pickup's signal to the TIP terminal.
2-Route the magnetic pickup's ground to the SLEEVE terminal.
3-Route the Powerbridge signal to the RING terminal.
4-Route the Powerbridge ground to the SLEEVE terminal.
PowerMix
4
NOTE: If you decide to wire the Powerbridge directly to the output jack (no
instrument-mounted volume control for Powerbridge) you must wire a 5
Megohm resistor between the Ring and Sleeve terminals on the instrument's
output jack.
5
Piezo/Magnetic Outboard Mixing Preamp
PowerMix
6
Functions
BATTERY POWER
Make note of the following when using the PowerMix under battery power.
The PowerMix has no on/off switch. Under battery power, the PowerMix is
turned on when the Mix Output jack is plugged in.
To avoid excessive battery drain, unplug the Mix Output jack when the unit
is not in use (battery life is an estimated 150 hours, continuous use).
BATTERY COMPARTMENT
To install the battery, move the latch on the battery compartment in the
direction of the printed arrow and pull the latch toward you. Once the
compartment pivots out, pop open the little hinged door at the end of the
compartment and insert a fresh 9V alkaline battery. Note that the door will
not close unless the correct battery polarity has been observed.
AC ADAPTER INPUT
USE ONLY a FISHMAN model 910-R or a Roland PSA series Regulated AC
Adapter. Using an unregulated power supply will void the warranty and may
damage the unit.
INPUT JACKS
The two Input jacks are designed to accept separate magnetic and piezo
signals via a single stereo cable or a stereo “Y” cable.
The Mag / Stereo Input jack is a dual function input that will operate in
either stereo TRS, or mono TS modes. The Tip connection of this jack
receives the magnetic pickup signal from your guitar. The Ring connection
of this jack can receive the piezo signal from your Powerbridge.
The Piezo Input jack is a mono input that receives the piezo signal from
your Powerbridge.
Piezo/Magnetic Outboard Mixing Preamp
7
PowerMix
8
NOTE: If you route two signals through the Mag / Stereo Input jack and
plug a third signal into the Piezo Input jack, the signal that normally
appears at the Ring of the Mag / Stereo Input jack will be replaced
(overridden) by the signal appearing at the Piezo Input jack.
MIX OUTPUT JACK
A combination of buffered magnetic pickup and Powerbridge signals appear
at this instrument level output.
PHASE SWITCH
If you experience a volume loss when combining the Powerbridge with the
guitar's magnetic pickups, flip this switch to correct the phase relationship
between the two.
LOW BATTERY INDICATOR
When plugging into the Mix Output jack, the Low battery LED will flash
momentarily, indicating that the power is on. When the Low Battery LED
stays on with the jack plugged in, it's time to change the battery.
VOLUME CONTROL
This affects the piezo volume only.
BASS AND TREBLE CONTROLS
These are shelving style boost/cut tone controls. These affect only the
piezo pickup.
MIDRANGE CONTROL
This is a resonance style boost/cut tone control. It affects only the piezo
signal.
Piezo/Magnetic Outboard Mixing Preamp
9
Suggested Signal Routing Options
STEREO CABLE OPERATION
Magnetic and piezo signals from your instrument are routed through a
stereo instrument cable to the Mag/Stereo Input jack on the PowerMix.
The Tip signal (magnetic) goes to the magnetic input stage. The Ring signal
(piezo) goes to the piezo input stage. In this case, the Piezo Input jack is
unused.
PowerMix
10
STEREO Y CABLE OPERATION
Magnetic and piezo signals from your instrument are routed through a
stereo Y cable. The magnetic pickup signal goes to the Mag/Stereo Input
on the PowerMix. The piezo pickup signal goes to the Piezo Input on the
PowerMix.
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