ButtKicker brand low frequency audio transducers are musically accurate, powerful, virtually indestructible and patented linear transducers, which recreate amplified audio signals in the feeling range.
They are similar to loudspeakers, but instead of moving a cone, and transferring sound waves through the air, they attach to seats, floors, platforms, etc, and send low frequency sound directly into the listener's body. The effect is amazing.
It takes two senses to perceive full range sound. We hear sound, but we also feel sound, especially low frequency. Traditionally, it has taken big speakers, moving tremendous amounts of air, to feel the low frequency of sound. People like loud concerts because they want to feel the sound pressure in their bodies.
However, ButtKicker transducers reproduce the feeling range of audio in a more direct way than through air. The perception is actually better and sound pressure disappears.
When using headphones or with speakers at a reduced volume, for example, with ButtKicker brand transducers, the listener perceives powerful, musically accurate, concert-level audio, but no one else hears anything. The sound is completely isolated to the listener.