Voice Coil December 2014 available online

In the December 2014 edition of Voice Coil Vance Dickason’s Test Bench discusses two very different woofers — the 18” Celestion CF1840JD pro sound subwoofer and Dayton Audio’s 7” ES180Ti-8 home audio woofer. In Acoustic Patents, James Croft reviews two loudspeaker-related patents filed by Dolby Lab Licensing Corp. (US) and comments on its own Transducer With Improved Electro-Magnetic Circuit patent.

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The ALMA Winter Symposium 2015 is approaching and the Association of Loudspeaker Manufacturing and Acoustics, International is preparing its most ambitious event ever. 4 Seminars. 3 Forums. Over a dozen Papers and Tutorials. Plus lots of quality Networking. January 3 & 4, 2015, at the Tuscany Suites and Casino in Las Vegas, NV (The weekend before CES).