The polarity is center negative for the power supply
The circuit is protected if you get it wrong, so don't be afraid to try
it if the polarity of your supply is unclear. I have chosen the most
common type of power socket, Some power supply tips have a hole down
the center that is too big even though they appear to fit correctly,
this is worth checking of you don't get any sound.
The keys are not latching so the only sound when they are pressed.
The chaos depth knob only really creates a strong effect when it is
turned nearly all the way up.
In this mode it is like a primitive 5 note keyboard. It would be fun to
play it through a real tape delay in this mode.
Harmonic sync undertones
Oscillators 2 3 4 5 lock on to harmonically related notes of oscillator
1. The notes form a type of minor scale. Try tuning the notes to a nice
chord and then turn knob 1 this makes a really strange detuning sound.
All oscillators try to lock on to each other. In this mode oscillator 1
can bleed when it is not being played, so it can be switched off by
turning it's knob all the way up.