| Patent Number |
Title Of Patent |
Date Issued |
| 6062339 |
Compact spiral cavity loudspeaker enclosure |
May 16, 2000 |
| A vented or bass reflex speaker. The speaker is secured to an inner sleeve which inner sleeve is received within an outer sleeve with the sleeves defining an annulus therebetween. Acoustical flow channels are formed in the annulus. The back of the inner sleeve is spaced apart from the ba |
| 5636955 |
Surface mount ring assembly for loudspeaker |
June 10, 1997 |
| An assembly for mounting loudspeakers in a panel. A hole is formed in the panel. An outer ring having a flange is secured in the hole with the flange on one side of the panel. An inner resilient ring is collapsed, passed through the outer ring to the other side of the panel, expanded and |
| 5394478 |
Low frequency sound generation system for use in vehicular passenger compartments |
February 28, 1995 |
| A system for low frequency sound production in vehicular passenger compartments, comprising an electrodynamic driver, having a first acoustic mass and a first acoustic compliance; and a Helmhotz resonator, affixed to one side of said electrodynamic driver means and having a second acoust |
| 5067583 |
Polymer-filled audio loudspeaker cabinet |
November 26, 1991 |
| A loudspeaker cabinet which is formulated from a nonfoamed, molded, filled polymer having between 20-90% inert filler and a density of between 1.0-6.0 gm/cm.sup.3. Preferably the polymer is a polyester. |
| 4295011 |
Linear excursion-constant inductance loudspeaker |
October 13, 1981 |
| A loudspeaker has a focused magnetic field and a specialized voice-coil structure, which provides constant inductance at the voice coil over the entire extent of voice coil excursion. The magnetic field is focused to a thin disc and the winding of the voice coil is of a height so that it |
