Fishman Prefix Pro blend User manual

www.ﬁshman.com

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.

3

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.

4

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.

5

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.

6

Fingerstyle

This will add fullness to the bass and

deﬁnition to the treble.

“Scooped” mid

This setting emphasizes extreme bass

and treble.

Sample Settings

7

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

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