Sirens
Faster, higher, farther!
A straw is used to blow air onto the siren disc. When it is cranked, 120 holes hack up the air stream at every revolution, causing a pitch to emerge. The quicker you crank, the higher the pitch.

Facts & Data
- Materials - Stainless steel, plexiglass, revolution counter
- Sound - Humming/whistling
- Setting - Inside or outside
- Setup time - 2 minutes
- Exhibition duration - Days, weeks, months
- Space needed - 150 x 150 cm
- Electricity - not necessary

Links & Downloads
Click here to log in for more information regarding technical specifications and details involved; password can be requested from Michael Bradke