This sound was captured from the top of a cooling tower fan at DFW airport's main air conditioning system. The motor is energized at slow speed. After it runs at that speed for a while it then ramps up to full power - soon after it powers down. Originally recorded on BetaSP with a single Sennheiser short gun microphone.

Comments

• 
  FattyFallDown 1 year, 5 months ago

  Absolutely brilliant. Thank you!
• 
  Jeremy314 2 years ago

  Oustanding sound!
• 
  seamboat 3 years, 2 months ago

  I love this sound! I've used it in two videos about water vortex's. Thank you for sharing!!!
  http://www.youtube.com/watch?v=QcWrFcA_8bg
  http://www.youtube.com/watch?v=K_8ISkv7i2M
• 
  rüdiman 3 years, 4 months ago

  this is really great!
  TY!
• 
  Robfilm 4 years, 4 months ago

  That's a really good sound. The startup itself reminds me of tripods from War of the Worlds. :)