Woofer loudspeaker
OwnerNorman Dusanekinventor
Life of this patent
Estimating the term…
Abstract
A loudspeaker enclosure is disclosed herein having a hollow box provided with a pair of air chambers separated by a partition or baffle. Coaxial openings are incorporated into the two outer walls of the box and the inner partition. An inner and an outer passive speaker cone is disposed in each opening associated with the inner partition and one of the box walls respectively in a back-to-back relationship. A rigid coupling connects the passive cones together so as to operate as a single unit. A woofer speaker cone is mounted in the other box wall which is operated by a suitable amplifier network. The mounting of the speakers creates sealed, air tight chambers and the outer passive cone is larger in diameter than the inner passive cone so that at very low frequencies the outer passive cone displaces more air than the woofer speaker cone.
Claims12
A woofer loudspeaker comprising:
- an enclosure having opposite end walls arranged in fixed spaced apart relationship;
- an inner baffle secured in said enclosure between said opposite end walls defining the interior thereof into a pair of air tight chambers;
- an active loudspeaker mounted on a wall of said enclosure and having a cone facing exteriorly of said enclosure so as to produce a back soundwave within a first of said air tight chambers;
- and
- passive loudspeaker means mounted on said baffle and a second wall of said walls responsive to said back soundwave produced by said active loudspeaker to produce an amplified soundwave exteriorly of said enclosure.
A woofer loudspeaker comprising:
- an enclosure having a pair of air tight compartments in fluid communication via an interconnecting passage:
- an active loudspeaker mounted in a first compartment of said pair having a cone facing exteriorly of said enclosure so as to produce a back soundwave within said first compartment;
- and
- passive loudspeaker means including a pair of back-to-back cones mounted in said other compartment of said pair so as to operate in unison in response to said back soundwave via said interconnecting passage.
Dependencies are inferred from the claim text.