Ideas for Speaker Enclosures Now in Voice Coil March 2024

Voice Coil March 2024 focuses on speaker enclosures with a unique directory of innovative material ideas, followed by an always insightful patent review, where James Croft revisits the pivotal Dinaburg invention. For Test Bench, this month Vance Dickason characterizes the SIG180-4 6.5” woofer from Dayton Audio’s Signature Series, and a midbass shallow-profile 6.5” driver, the Stereo Integrity TM65 mkIV.

Recently, Dinaburg Technology, based in Dallas, TX, was issued their first US patent for an electro-dynamic loudspeaker with an integrated coaxial passive ring radiator. Mikhail Dinaburg, noted physicist and the patent inventor, uncovered some missing elements in previous coax and passive radiator work and set out to prove it. Dinaburg’s patent discloses techniques for higher performance sound reproduction, enabling lower distortion, extended frequency range, higher efficiency, and improved speech intelligibility. The invention has wide applications and scales from a earphone driver to near-field studio monitors, ceiling speakers, under couch subwoofers to the largest concert subwoofers.

In Voice Coil May 2021, Andrew Taylor explains Klippel’s approach to "Comprehensive Transducer Testing in 24 Minutes," Mike Klasco writes about the use of "PEEK High-Performance Film Diaphragms and Cones," and there are two updated directories on MEMS Speakers and Microspeaker Vendors. James Croft reviews Mikhail Dinaburg’s “Speaker with Dual Diffuser” patent, while Vance Dickason characterizes the NSD1424BTN 1.4” compression driver from Eighteen Sound, and the Twt28_vMS high-end dome tweeter from Kartesian in Test Bench. Now available in print and digital.