Voice Coil September 2015 Edition Is Ready for You!

August 21 2015, 05:00

In this issue of Voice Coil’s Industry News & Developments, Vance Dickason highlights the 2015 Custom Electronic Design & Installation Association (CEDIA) Expo event being held at the Kay Bailey Hutchison Convention Center in Dallas, TX, , from October 14–17, 2015, with the actual exhibit sessions taking place from October 15–17. This is an exciting industry event for the loudspeaker industry, and occurs just prior to the 139th AES Convention at the Jacob Javits Center in New York (October 29-November 1, 2015).
In Industry Watch, Vance Dickason reminds our readers about two more upcoming loudspeaker industry events. The Loudspeaker Sourcing Show (www.loudspeakersourcingshow.com), scheduled for October 9–11, 2015, is the first show of its kind. A three-day event, taking place at the Nansha Grand Hotel in Guanqzhou, China, is designed to create a level playing field for the entire industry and serve up most, if not all, the solutions necessary for brands to do business with key industry suppliers.
Next, is a reminder to start planning for the ALMA International Symposium & Expo (AISE) in January 2016, prior to Consumer Electronics Show (CES). The Association of Loudspeaker Manufacturing & Acoustics (ALMA) International is offering early bird packages for exhibitors and visitors (www.almainternational.org).
In this month’s Spotlight, Mike Klasco guides us on “A Visit to Yuon Yunn Membrane Co., Ltd.”, one of the largest and most highly respected diaphragm forming vendors. You may have heard of the company, which is often referred to and recognized as “YY.” About 30% of YY’s production is for earphones and headphones, another 25% goes to mobile phone receivers and microspeakers, and the rest is spread across laptops speakers, military walkie-talkies, automotive infotainment, warning buzzers, and similar small transducers
Our Acoustic Patents column by James Croft, dives in two interesting electroacoustic designs. First we have an Electro Acoustic Driver patent, awarded May 28, 2015 to Daniel Beer (Martinroda, Germany); Lutz Ehrig (Dresden, Germany); Lorenz Betz (Wassertruedingen, Germany); Philip Leistner (Stuttgart, Germany); Karlheinz Bay (Stuttgart, Germany); and Michael Leistner (Stuttgart, Germany), all from the Fraunhofer-Gesellschaft Institute in Munich, Germany. The patent describes an “electro acoustic driver including a diaphragm, a diaphragm drive system and a diaphragm suspension. The diaphragm system is configured to subject the diaphragm to a motion, wherein the diaphragm suspension is configured to guide the diaphragm. The diaphragm drive system includes an active element configured to actively influence the motion of the diaphragm.”

Next, James Croft reviews a Loudspeaker patent filed in 2012 and granted in July 21, 2015, to Zoltan Bay (Tiszaalpar, Hungary). The invention relates to a novel loudspeaker, which contains a bearing structure, a magnetic arrangement fixed to the bearing structure, determining air-gaps, and a diaphragm connected to the bearing structure, made of a sheet material. A complex design which intends mainly to realize a horizontally, omni-directional loudspeaker transducer, in line with previous designs previously mentioned in the Acoustic Patents column.
This month Test Bench samples, analyzed by Vance Dickason, include the TiCW 1058Ft, a 10” woofer/subwoofer from Morel’s Ultimate Titanium former product line, and a new 2” titanium diaphragm compression driver from Italian OEM pro sound manufacturer B&C Speakers, the DE1085TN, coupled to a B&C ME60 horn.
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