ButtKicker® brand BK4-4 Advance low frequency audio transducers are the mid-sized version of the BK-LFE tactile transducer that has received with rave reviews around the world since they were introduced in late 1999! The BK4-4s feature a multi-directional mounting bracket, while their smaller size allows for versatile placement options: directly to suspended floors, chair and couch frames (kinetic isolators are recommended and sold separately in the Related Items section), as well as platforms and risers.
Instead of using the traditional voice coil design of most tactile transducers, ButtKicker transducers are built using a revolutionary, patented magnetically suspended piston design. Not only does this design create more accurate low frequency effects (drummers swear by them for monitoring), it also lasts longer! The magnetically suspended piston design pushes the resonant frequency of each ButtKicker transducer down to an ultra-low 9 Hz, allowing for a truly infrasonic, and usable, frequency range of 5 to 200 Hz! While other transducers produce their peak output at 60 to 80 Hz, ButtKickers are still going strong up to three octaves lower.
Unlock the 4th dimension of sound in movies and video games with realistic tactile and sound effects such as earthquakes, thunderstorms, rocket launches, tidal waves, explosions, tornadoes, volcanoes, dinosaurs... and high quality musical bass playback.
Each ButtKicker transducer piston is built using large gauge coil wire, and is surrounded by a large metal housing that acts as a heatsink. Should the coil wire exceed 150°F (75°C), an internal thermal switch disconnects the ButtKicker from the amplifier for cooling. This allows for years of maintenance-free use! Spring-loaded speaker terminals offer nearly endless amplifier connection options, and all ButtKicker transducers are proudly made in the U.S.A.
Note: ButtKicker transducers are able to operate at any angle. For the best possible output, with the lowest possible distortion, it is recommended that ButtKicker transducers be mounted in their vertical, upright position.
Specifications: • Power handling: 75 watts minimum, 400 watts max • Impedance: 4 ohms • Frequency response: 5-200 Hz • Fs: 9 Hz • Overall dimensions (H x W x D): 4.375" x 4.875" x 4.375" • Weight: 4.5 lbs.