×

Satellitic compact electroacoustical transducing

  • US 5,917,923 A
  • Filed: 10/19/1995
  • Issued: 06/29/1999
  • Est. Priority Date: 05/18/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. A loudspeaker system comprising,an upper frequency assembly for radiating acoustical energy with substantial audible spectral components in the audible frequency range only above a predetermined upper frequency of at least substantially 150 Hz,said upper frequency assembly including a ported enclosure having a front face of predetermined height and width,said enclosure enclosing a loudspeaker driver adjacent to said front face having a cone of diameter slightly less than at least one of said predetermined height and width,said driver having a moving voice coil of diameter greater than half said cone diameter in an airgap,said ported enclosure including a main port characterized by acoustic mass and an internal volume characterized by acoustic compliance to establish a fundamental mass-compliance resonant frequency near said predetermined upper frequency that keeps the maximum excursion of said diaphragm of at least 3.5 millimeters peak-to-peak to provide a predetermined maximum sound level for spectral components in the range above the predetermined upper frequency of output levels of at least 105 db substantially one meter therefrom on a driver axis without audible distortion.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×