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
Power supply system for motor vehicle
Method and structure for forming ETSOI capacitors, diodes, resistors and back gate contacts
Systems and methods for adaptive blind mode equalization
Active gate drive circuit
Visual physician office systems and methods
Washing-up bowl
  Randomly Featured Patents
Method for producing butene-1 polymer
Crimped center conductor
Tartaric acid derivatives as fuel economy improvers and antiwear agents in crankcase oils and preparation thereof
Storage bin for pin-spotter apparatus for bowling, and method of manufacture thereof
Quilting method and system
Heating of combustible mixture generators for internal combustion engines
Tonometer calibration tool
Method of detecting objects within a wide range of a road vehicle
Modular console command center workstation
Selective call system with message rebroadcasting over another selective call system