Resources Contact Us Home
Enclosure for symbiotic active/passive operation of an acoustic driver

Image Number 7 for United States Patent #7624839.

A compact loudspeaker enclosure combines planar type devices for high frequency sound reproduction and cone type active devices for low frequency sound reproduction. The low frequency cone type transducers are mounted in baffles between forward and rear enclosed spaces and thus do not directly radiate into the environment. The first enclosed space is acoustically coupled to the environment by the planar device which is mounted between the first enclosed space and the environment with one major face mounted to radiate either directly into the environment or to be horn loaded. The planar operates as a passive radiator to the LF devices at low frequencies and an active device above a crossover frequency.

  Recently Added Patents
System and method for terminating communication sessions with roaming mobile devices
Polarization-coupled ferroelectric unipolar junction memory and energy storage device
Authorization method for location based services
Phosphonate compounds
Image forming apparatus
Integrated circuit package system with bonding lands
System and method for providing definitions
  Randomly Featured Patents
Optical selector switch
Battery pack, charging control method, and application device
Camera loading door interlock
Transient and intermittent fault insertion
Duffle luggage
Rechargeable battery
Tobacco feeder
Magnetic head arm assembly
Collector for thermionic energy converter
Tongue hygiene device