PCC
Heaps of stuff on the net, mainly for home theatre nuts.
copied this straight from one of the pages:
Tactile sound is defined as sound or vibration that can be felt with the body. This sensory effect is facilitated by various nerve receptors located through out our body which sends electrical impulses to the brain. The human tactile sound bandwidth ranges from the subsonic, 20 Hz and below and sonic up to 800 Hz for most individuals and up to 2 or 3 kHz for hearing impaired individuals.
Studies have shown that most individuals are very sensitive to tactile sound and can detect a shift of as little of 1.8 Hz. This sensitivity approaches the acuity of the human ear which can detect shifts of 1 Hz. The human body is also very sensitive to small amplitudes of Tactile Sound such as feeling the refrigerator vibrating through our feet on the kitchen floor or the pulse of a heart beat through our finger tips. Tactile sound can be soft such as a babies breath against your cheek or as violent as a car wreck or nearby explosion.
We experience Tactile Sound in many activities including: talking, playing a musical instrument, driving a car or motorcycle, riding a roller coaster, flying an airplane, riding in an elevator, earthquakes, running water in the bath tub, shooting a gun, a door slamming shut, or when we are in contact with another person who is talking. Tactile Sound can be calming and gentle when playing an acoustic musical instrument or standing near a water fall or irritating and harmful if we are running a jack hammer or too close to an explosion.
Air transmission:
For many years sound that could be felt has been recreated with recorded media through the use of large speakers or sub woofers. The physical effect is created by moving and/or compressing the air in an enclosed room. Using sub woofers to create a physical sensation is limited in both scope and band width in that Tactile Sound as described above, with the exception of an explosion, is transmitted through a solid medium. Sub woofers typically operate in only the subsonic range and therefore do not reproduce the higher tactile frequencies.
Direct coupling:
Tactile sound transducers are used by major amusement parks, the military and now popular in home theater installations and live sound applications to transfer vibrational information directly into solid surfaces such as seating or floor structures. This method of transfer has many advantages over air transmission.
The bass shakers you will find on the net can get quite expensive. But as I mentioned in the last post, head down to Jaycar. I picked up 12 of them to screw to the bottom of my theatre couch.
To be honest I'm not sure how they would go in a Cobra but in theory they should kick asss.
