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
High performance strained source-drain structure and method of fabricating the same
Method for encoding signal, and method for decoding signal
Pharmaceutical and diagnostic compositions for use in the treatment and diagnosis of neurodegenerative diseases or amyloid diseases
Substrate processing apparatus and display method of substrate processing apparatus
Lithographic apparatus and device manufacturing method
Semiconductor device, semiconductor device design method, semiconductor design apparatus, and program
Keypoint descriptor generation by complex wavelet analysis
  Randomly Featured Patents
Paintball gun having movable compressed gas tank
Foam glass having crust layer and method of producing same
Educational toy clock with action
Generator circuit breaker having a single mechanical control mechanism
Dual-band communication of management traffic in a blade server system
Substituted aromatic polyalkyl ethers and fuel compositions containing the same
Device for locking a backrest that can be folded
Urethra protection device
Chemically amplified positive photoresist composition
Use of polyphosphate as a tooth erosion inhibitors in acidic compositions