YouTube via circuitbenda | February 19, 2011

"The Dual - Tone Dub Siren features
4 individual Rotary Controls :-
Frequency Pitch - Siren 1... Oscillator 1
Frequency Pitch - Siren 2... Oscillator 2
Modulation Depth Control
Modulation Sweep Control
" ONE - SHOT " - Trigger push button
" CONSTANT " - Trigger Toggle Switch
" PATCHING " Switches for both Siren Oscillators

" patching " switches allow the user to create some really authentic
Analogue Dub Siren Sounds.
Auto or Manual control of all Siren functions
NEW .. As there are 2 independent Siren Oscillators, they can be mixed using the
" Patching " switches, and then create the typical :-"