Bongo bass piezo control - but not stacked knob?

[waytoofunky]

Hi all! I recently got a '13 5 string fretless Bongo (lefty), and I opened up the cavity and lo and behold, there's a piezo circuit in there! However, it has the standard knob configuration (volume, pup pan, stacked mids, and stacked treble/bass). I haven't a clue how to activate the piezo. Does anyone have thoughts on this?

Thanks!

 

[tbonesullivan]

Does it have piezo saddles? There should be wires going from them into the body.

 

[waytoofunky]

Does it have piezo saddles? There should be wires going from them into the body.

Oh! Well heck, it doesn’t look like it! Thanks. At least I know there’s a possible future project in there.

 

[five7]

Does it have the trim adjustment on the back of the body behind the bridge?

 

[five7]

Here is a nice piezo bongo for sale.

https://www.guitarcenter.com/Used/Ernie-Ball-Music-Man/Bongo-5-HS-Electric-Bass-Guitar.gc

 

[Michael Murphy]

> Does it have piezo saddles? There should be wires going from them into the body.

Also, the piezo saddles are rectangular, while regular non-piezo saddles are cylindrical (barrel).

Also: the piezo blend control was stacked with the pickup blend control on Bongos with multiple magnetic pickups (HH, HS),
but if it's a single-H Bongo, then the piezo control is the one next to the volume (the "pup pan"), and was not stacked.