Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Systems and methods for implementing pressure sensitive keyboards
Method for processing an algae medium containing algae microorganisms to produce algal oil and by-products
Crystalline form of (R)-7-chloro-N-(quinuclidin-3-yl)benzo[b]thiophene-2-carboxamide hydrochloride monohydrate
Data architecture and user interface for plasma processing related software applications
Wafer level package and fabrication method
SRAM cells using shared gate electrode configuration
Question and answer system wherein experts are associated with models and have response rates that are associated with time intervals
  Randomly Featured Patents
Process for preparing 1-substituted 4-cyano-1,2,3-triazoles
Intruder perceiving apparatus by means of infrared detection
Non-ambulatory thermotherapy device for heat and cold therapy of the foot/ankle complex and hand/wrist complex
Framework system
Field sequential light source modulation for a digital display system
Miniature rose plant named Ruifaro
Transversely reinforced piezoelectric composites
Utility vehicle
Browning composition
Tufting machine gauge parts module