Fishman Prefix Pro blend User manual

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USER GUIDE
PREFIX PRO BLEND

2
Welcome
Thank you for making Fishman a part of your acoustic experience. We are proud
to offer you the finest acoustic amplification products available: high-quality
professional-grade tools to empower you to sound your very best. We are
confident the Prefix Pro Blend will both enhance and inspire your music making.

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Quick Start
Before you begin, set the controls as shown:
1. Plug in: Use a ¼” instrument cable.
2. Turn up: Raise the Volume and adjust the
Blend control to your liking.
3. Pickup tone: Adjust tone controls to
your liking.

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Controls
Volume: For the cleanest signal, set the Volume knob as high as possible,
without causing distortion or feedback.
Blend: Move the Blend slider to change the balance between the pickup and
the microphone.
Bass: Boost here to add depth and weight to the sound of the guitar. Note that
this control only affects the pickup signal.
Contour EQ: Two sliders (Contour and Contour Frequency) make up this EQ.
The Contour Frequency slider lets you tune in on a specific range of sound that
you can boost or cut with the Contour slider.
Treble: Boost to cut through the mix. Cut to mellow and subdue the sound.
Note that this control only affects the pickup signal.
Notch: Tune the Notch filter to remove low-end feedback. Raise the Volume
until feedback occurs, then slowly turn the Notch to the right until the feedback
is eliminated.
Phase: Use the Phase switch to improve bass response at low volume and
suppress feedback at high volume. If feedback occurs, push the Phase switch. If
feedback recurs when you change your location, press the switch again.

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Power
Plug in the guitar, and the Prefix Pro Blend switches on. The Battery LED will flash
once at power-up to tell you the preamp is on.
Low battery indicator
When the Battery indicator lights steadily, it is time to change the battery. To
conserve power, unplug the instrument when not in use. Replace the battery by
flipping open the preamp body using the latch located at the top of the preamp.
Be sure to observe the correct polarity during this installation.
Microphone Trim Adjustment
The microphone and pickup levels are preset at the factory and do not require
adjustment. However, a microphone trim control may be adjusted to alter the
microphone and pickup balance.
Set the Blend slider to the center position and flip open the preamp body. The
trim control is located under the control panel next to the Bass slider. Use a small
screwdriver to adjust the trim control as necessary.

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Fingerstyle
This will add fullness to the bass and
definition to the treble.
“Scooped” mid
This setting emphasizes extreme bass
and treble.
Sample Settings

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Electrical Specifications
Nominal Input Level: -20dBV
Input Impedance: 20MOhm
Output Impedance: Less than 3.5kOhm
Nominal Output Level: -12dBV
THD: Less than .04 %, -20dBV input
Noise Floor: -97dB
Dynamic Range: 102dB
Battery Life: 100hrs.
Notch Filter Range: 30Hz – 300Hz (-15dB)
Bass Control Frequency: 60Hz
Treble Control Frequency: 10kHz
Contour Control Frequency: 250Hz – 10kHz; Q = 0.5
All specifications subject to change without notice.

www.fishman.com
009-089-005 Rev C 4-09