Carlo Robelli CBW-4134CR Piezo Pickup Replacement

Introduction

This guide was created to help replace the piezo pickup on a Carlo Robelli Acoustic guitar (CBW-4134CR). This guitar was converted to an acoustic-electric guitar by installing a preamp (EQ-7545R), which was found on Amazon after the original piezo pickup installed was not giving out an output signal or in other instances sounding poor in quality. The piezo pickup is connected to the guitar preamp's input and placed under the bridge saddles to pick up the strings' vibrations. A faulty pickup can lead to feedback noise, loud buzzing, or sometimes no signal after plugging in a 1/4 inch cable into the guitar's output. It is best to follow this guide by placing the guitar on a flat and level surface so that the guitar does not fall and break or so that the guitar pins do not roll off and get lost. This guide may help any guitar with a piezo pickup, but the steps may not be the same.

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Étape 1 Piezo Pickup

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Unwind the low E guitar tuner with a guitar winder to loosen the string.
Cut the string above the sound hole using a string cutter.

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Étape 2

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Remove the low E string from the guitar tuner and remove the bridge pin.

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Étape 3

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Repeat Steps 1 and 2 for the rest of the guitar strings, removing all the pins and strings.
Remove the bridge saddle.

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Étape 4

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Find the preamp box inside the guitar soundhole and disconnect the piezo pickup only.

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Étape 5

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Inside the guitar, find the piezo pickup and push outward.
Once the pickup is sticking out, pull to remove it.

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Étape 6

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Grab the new piezo pickup and insert it in the designated hole, pressing firmly and ensuring it is neatly tucked in.

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Étape 7

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Once the piezo pickup is inside the guitar, connect the pickup to its proper input inside the guitar preamp.

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Étape 8

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Place the bridge saddle back in place.
Insert a new set of strings with guitar pins to ensure that the line is not pulled out when winding the new guitar strings.

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Étape 9

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Once all new strings are wound up, cut off the excess line for a neater look.

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Étape 10

This is how the bridge should look once everything is back into place.

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Conclusion

Having a new piezo pickup will heavily improve the sound quality sent from your guitar to the guitar amplifier, recording interface, PA system, or headphones.