Voice Coil October 2020 Puts Speaker Electronics, Amps, and DSP in Focus

Voice Coil October includes an updated directory of speaker-focused electronics, amps, and DSP vendors. And an insider's perspective about Nuvoton’s new smart amps, featuring Klippel's Controlled Sound (KCS) technology. This month's Acoustic Patents article discusses a Planar Loudspeaker Manifold patent granted to Dolby Laboratories, and Vance Dickason's Test Bench characterizes the latest Scan-Speak Ellipticor 21WE/4542T00 midrange, followed by the ODT29 fabric dome tweeter from Omega Audio. Now available online and in print!

Following the first test on the new Scan-Speak Ellipticor series, with the D3404/552000 tweeter, this edition of Test Bench focuses on the Scan-Speak Ellipticor 18WE/4542T00 midbass woofer. Like the D3404, the 18WE/4542T00 is a seriously feature rich transducer, which has a magnetically attached aluminum trim ring that can obviously be anodized a variety of colors besides black. For the cone assembly, Scan-Speak chose a rather stiff curvilinear profile back coated paper cone with an elliptical 45 mm × 35 mm convex paper dustcap. This article was originally published in Voice Coil, April 2018.

This edition of Test Bench focuses on the Scan-Speak Ellipticor D3404/552000 dome neodymium motor tweeter. Overall, the D3404/552000 is like a big elongated 28 mm diameter tweeter. For a motor system, Scan-Speak basically scaled up their currently successful Air-Circ tweeter motor with 10 neodymium slugs and copper shorting rings and a titanium former. The big news is that this motor and diaphragm yield a 2.83 V/1 m sensitivity of 97 dB! This article was originally published in Voice Coil, April 2018.