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Author Topic: The Rotary Woofer Bill Enos Film God Posts: 2081 From: Richmond, Virginia, USA Registered: Apr 2000 posted 08-24-2006 06:25 PM                     A friend sent me the info on this. Another variation on the motor driven woofer, this time using flapping fan blades. To me it looks like it works, but with all the moving parts it would seem to me that it will develop mechanical noise of its own not too far in. Take a look, what do you think? www.rotarywoofer.com  |  IP: Logged Paul Mayer Oh get out of it Melvin, before it pulls you under! Posts: 3836 From: Albuquerque, NM Registered: Feb 2000 posted 08-24-2006 06:36 PM                        Also take a look at this thread from last year - same manufacturer, different model: Amazing new Sub-Subwoofer  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 08-25-2006 05:19 AM                        Rotary woofer? Sounds like a dog in a washing machine.  |  IP: Logged Cameron Glendinning Jedi Master Film Handler Posts: 845 From: West Ryde, Sydney, NSW Australia Registered: Dec 2005 posted 08-26-2006 01:08 AM                     Interesting. To a small degree this reminds me of a sonic activater, which is a motor with an unveven blade, the faster it goes the more it shakes, small ones can be added to seats, so the seats shake when low bass hits. Our ears are very inefficient at hearing low bass. we tend to feel it! 6 inch voice coiled 18" - 27" speakers are rare but are produced and can operate from -3db at 15 hz. Didn't the military do research into developing some sort of weapon that used sub bass, I cannot remember exactly but a large dose of 7 hz makes people poo their pants? ( i am serious )  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 08-26-2006 04:55 AM                     Yup, ELF in that 0-5'ish Hz region is extremely bad for the nervous system. A recording engineer friend told me that once he was working with a bassist using a fuzz pedal, some of the harmonics were getting way down into this region, and both he and the musician suffered nausea and temporary paralysis!  |  IP: Logged Charles Greenlee Jedi Master Film Handler Posts: 801 From: Savannah, Ga, U.S. Registered: Jun 2006 posted 08-26-2006 12:40 PM                        Ahh yes, the all to famous brown note. Unfortunatly the Mythbusters did a peice on it, and couldn't find it.  |  IP: Logged

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