The G-3 bass has 2 control knobs, which are self explanatory (Volume and Tone) and one three position pickup selector switch.
The switch positions are as described below with each soundclip. Descriptions are taken from the 1978 Gibson G3 controls flyer.
Soundclips were recorded on a 1976 maple bodied G3 fitted with GHS Flea Signature roundwounds, plugged directly into a mobilePre preamp.
Forward position
activates the front and middle pickups in humbucking configuration. Clips played finger style, vol 10, tone 10, then tone 0
Back position
activates the middle and back pickup in the same manner. Played with a pick, vol 10, tone 10
Middle position
activates all three pickups for what we have coined a 'buck-and-a-half'; played finger style, vol 10, tone 10