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Read carefully before installing your GK-3B.

Check the dimensions and requirements below to make sure that the GK pickup and controller can be attached to your bass.

* If GK-3B is attached for prolonged periods of time to a bass with a lacquer finish, you may notice a slight discoloration on the finish when you take it off.

Dimensions
* With the pickup section featuring six individual pickup coils, this unit is compatible even with six-string basses.
Requirements
If you are not using the pickup holder:

A
Make sure that your string spacing is between 16 mm (11/16") and 19 mm (3/4").
B
Make sure that there is a space of at least 18 mm (3/4") between the bridge and rear pickup.
C
Make sure that there is a space of at least 138 mm (5-7/16") to attach the GK pickup. The surface should be flat and there should be nothing in the way, such as screws and volume/tone knobs. (*1) (*2).
D
Make sure the bass's body is between 35 mm (1-7/16") and 50 mm (2") thick.
E
If you do not have enough space to attach GK-3B to your bass's body, attach it so that it floats above the bridge as shown here.
F
Make sure that there is a space of at least 10 mm (7/16") between the center strings and the surface that you will be attaching the GK pickup to (*3).
(*1) Depending on your 4-string bass, you can choose to position the center of the GK pickup at a point between the 1st and 2nd strings, or the 2nd and 3rd strings, or the 3rd and 4th strings. For details, please refer to the manual of your GK-supported device.
(*2) Depending on your 5-string bass, you can choose to position the center of the GK pickup at a point between the 2nd and 3rd strings, or the 3rd and 4th strings. For details, please refer to the manual of your GK-supported device.
(*3) As a general rule of thumb, use the included spacer to adjust the GK pickup height so that you have a space of about 1.5 mm between the GK pickup and each of the strings when they are held down at the highest fret.

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