Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Enclosure for symbiotic active/passive operation of an acoustic driver










Image Number 5 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
Squib control circuit
Deadline-driven parallel execution of queries
Plate
Starch networks as absorbent or superabsorbent materials and their preparation by extrusion
Method and apparatus for prioritizing data transfer
Mobile terminal including stellar body watching hookup communications function
Computerized apparatus for identifying industries for potential transfer of a job function
  Randomly Featured Patents
Macroreticulate polymer scavengers for the removal of impurities from inert fluids
Desulfurization of liquid iron melts
Self-biased phase-locked loop
Multi-purpose user interface panel
Wellhead bowl protector and retrieving tool
Device for detachably fastening hose or pipe ends
Distributed on-line money access card transaction processing system
Methods for gamete production in birds
Method of, and stylet apparatus for, installing a retrograde coronary cannula
Wheel structure for saddle-ride type vehicle