Patent Review: Two Pioneer Patents. Same Speaker Invention

This article reviews two patents titled simply "Speaker Device" from four Japanese inventors, on behalf of Pioneer Corp. of Japan. The original and expanded patent describes a flat speaker device capable of emitting loud reproduced sound, using a mechanical structure that converts a linear voice coil motion in one axis to an orthogonal mechanical diaphragm displacement. The system functions much like a scissor-jack you would use to raise your automobile to change a tire. The linear motion of the threaded rod coverts the axial force to a 90° lift movement.

QSC, the original pro audio amplification from Costa Mesa, CA, is making a smart comeback with its new L Class active loudspeaker range. This next generation of advanced, intelligent, active loudspeakers was designed for applications ranging from simple, portable, plug-and-play setups, to demanding, networked event and performance productions and fixed installations. The new L Class range is further enhanced with the free QSC SysNav app.

Danish audio powerhouse Purifi Audio is not showing any intention of slowing down its efforts to push innovation further in both audio amplification and speaker transducers. Adding to the original formula - featuring proprietary fiber paper cones - used in the successful PTT4.0X and PTT6.5X midbass drivers, Purifi now announced a new aluminum-cone version of the PTT6.5X, delivering extended frequency range with ultra low distortion for superior midrange performance.

Milan-based FaitalPro continued to expand its catalog of high performance ferrite and neodymium drivers during the 2015 Prolight+Sound show. In Frankfurt, FaitalPro introduced its new 18” Neodymium Super Woofer, 18XL1800, leveraging the most advanced modern technologies in response to client demands.