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
DC/DC converter, power supply circuit, and semiconductor device
Memory device, test operation method thereof, and system including the same
Three-term predictive adder and/or subtracter
Upstream channel bonding in a cable communications system
VEGF-specific capture agents, compositions, and methods of using and making
Methods for detecting DNA-binding proteins
System and method for associating financial transaction data with user's project data
  Randomly Featured Patents
Shunt current elimination for series connected cells
Process for improving the physical properties of formed particles
Semiconductor device having a nitrogen doped polysilicon layer
Train gage measurement circuit for high temperature applications using high value completion resistors
Method and apparatus for transmitting packet of data
Photoreceptor device having a self-assembled patterned binder layer
Method for connecting two parts along abutting edges and connection obtained thereby
Semiconductor device having a reduced bit line parasitic capacitance and method for manufacturing the same
Paper-like material processing apparatus, switchback mechanism and paper-like material processing apparatus equipped with switchback mechanism
Low dielectric constant organic dielectrics based on cage-like structures