Mayones Cali - Switchology Explained; Mini-switch and Push-Pull Knob Functions

Switchology (for mini and push-pull switches)
In the lower setting of the mini-switch, only the instrumental 1/4" jack remains active.
The 1/8" headphone amp jack is switched off. Depending on the position of the push-pull
volume knob, a clean pick-up signal is sent to the quarter-inch jack output (passive mode,
volume knob up), or a signal with a frequency profile adjusted by the 3-band EQ (active
mode, volume knob down).
With the mini-switch in the up position, the headphone amp is switched on as well, with
the signal also being sent to the 1/8" headphone jack. Depending on the push-pull volume
knob switch position, the signal sent to the headphone amp output is either clean (passive
mode, straight from pick up, altered by the volume knob), or it comes out of the preamp with
a 3-band EQ (active mode). With the switch set in this position, we may use stereophonic
headphones as well, while playing the instrument. The headphone amp works regardless of
whether the instrumental cable is connected to the output 1/4" jack. That output jack also
serves as the main power supply switch for the onboard preamp with a 3-band EQ.
Switching the headphone amp on (with the mini toggle switch), and/or preamp with the EQ
(volume knob in the down position, with a jack cable inserted in the 1/4" output) is signaled
by a blue LED lighting up (labeled PREAMP ON), placed on the electronics cover on the back
side of the instrument.
After one finishes playing, one should always leave the mini toggle switch in the lower
setting, and remove the instrumental cable, to conserve the battery power. When not using the
Cali bass, the blue LED (PREAMP ON), should always be off.
Mini-switch position
Instrument 1/4"
output jack
Headphone 1/8"
output jack
Lower
ON
passive or active mode
OFF
Upper
ON
passive or active mode
ON
- 6 -
www.mayones.com
Push-Pull Volume Knob
Switch Position
Instrument mode - passive or active
Lower
Active mode - preamp, with the three-band EQ, is on. Apart from volume
adjustment, the user may also change the tonal profile of the instrument,
using the treble, mids, and bass knobs.
Upper
Passive mode - preamp, with the three-band EQ, is off. The pickup signal
is sent to the volume knob, and then directly to the instrument 1/4"
jack output.
Mayones Cali Bass – User Manual