Princeton SP-88 - Manual (Page 8)

Master volume control
Turn the VOLUME KNOB to adjust the
MASTER VOLUME.
Brilliance
For a brighter sound, move the BRILLIANCE
slider to the right.
For a mellower sound, move the BRILLIANCE
slider to the left.
You can change the keyboard brilliance as you
wish.
Demo
There are 3 Built-in Demos.
Press the [DEMO] button, the DEMO icon on
the LCD lights. It displays the first demo
name "World", and plays all 3 demos.
Press the [DEMO] button again or press the
[START/STOP] button to stop playing and exit
demonstration mode.
Press and hold the [DEMO] button for 3
seconds to play current demo repeatedly.
While playing, press the [+] & the [-] button
or rotate the DIAL to select the DEMO you
want. After the DEMO name flashes for 3
seconds, it plays the new demo immediately.
When playing the demo, press the [TEMPO+]
& the [TEMPO-] button or rotate the DIAL or
step TEMPO/TAP pedal to adjust the current
tempo.
VOL UME
MAX MIN