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3. Carefully separate the bag from the Velcro patch. 

To set the adhesive, burnish the entire area of the 

patch, especially the edges.

4. Install a 9V alkaline or lithium battery. Tuck the 

battery into the bag and re-attach to the Velcro 
patch. The adhesive under the Velcro patch requires 

24 hours to achieve a full bond, so take care to not 

stress the adhesive if you remove the battery bag 
after the initial installation.

Second pickup source option

A second source such as a microphone or magnetic 

soundhole pickup may be added (fi gure 3). The 
output will appear on the ring connection when a 
tip-ring-sleeve ¼” jack is inserted.

For specifi c wiring diagrams, refer to fi shman.com.

Specifi cations

Power Supply: 

9 Volt alkaline battery

Battery Life: 

2,000 hours

Maximum Output
Voltage: 

4V peak to peak

Input Overload: 

-.7dBV

Input Impedance: 

10MOhms

Output Impedance: 

Less than 5kOhm

System Gain: 

3dB

Signal-to-Noise Ratio:  94dB

Discrete Component
Design: 

FET low noise class A

 

input stage, bipolar class

 

AB output stage

REV. 2.3

PJ FISHMAN

+

G

IN

R

-

Pickup Signal

to “IN”

2nd Pickup Signal

to Ring (“R”)

Pickup Shield

to Ground (“G”)

2nd Pickup Shield

to Ground (“G”)

Figure 3

514-300-114 Rev A 5-09

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