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
Dynamic data caches, decoders and decoding methods
Cover opening and closing unit and image forming apparatus including the same
Direct file transfer between subscribers of a communications systems
Avirulent oncolytic herpes simplex virus strains engineered to counter the innate host response
Segmentation of a product markup image based on color and color differences
Device to control force required to depress accelerator pedal
Method of treating a preceramic material
  Randomly Featured Patents
Object oriented monitor displaying interactions among objects in square matrix with an object designated in first column and additional column(s) for interacting objects
Fluid flow divider
Power unit and straddle-type vehicle
Diamino compounds and methods for preparing them
Symmetry plane antenna system
Decorative hood
Adhesion promoting composition and coated film
Method for preparing pyromellitic acid and/or pyromellitic anhydride
Method for bonding thermoplastic high molecular weight materials
Ladder safety device