US Patent Issued to Harman Professional on Sept. 30 for "Dual compression driver with annular exit" (California Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,432,490, issued on Sept. 30, was assigned to Harman Professional Inc. (Northridge, Canada).

"Dual compression driver with annular exit" was invented by Alexander Voishvillo (Simi Valley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dual compression driver includes first driver assembly and a second driver assembly each including a motor assembly disposed about a central axis, an annular diaphragm coaxial to and operably connected to each motor assembly, and a phasing plug coaxial to each diaphragm. Each phasing plug includes an input side oriented toward the diaphragm, an output side oriented away from the diaphragm, and a plurality of apert...