Download Now Your Voice Coil September 2017 Issue!

In the September 2017 edition of Voice Coil, read about the new Klippel Analyzer 3 (KA3), launched to coincide with the year the German company celebrates its 20th anniversary. Also, read about a surprising speaker design recently patented by Harman and learn about "Acoustic Methods of Microphone Calibration" from the experts at PCB Piezotronics. In Test Bench, there's a 3” midrange dome driver from Volt Loudspeakers and a new 10” subwoofer from Scan-Speak. Now available.

Voice Coil May 2017 is an issue not to be missed. Aaron Heuschmidt, from Klippel, writes about new ways to measure key loudspeaker parts, James Croft reviews two recent patents for a Low-Profile Loudspeaker Transducer and a new Passive Radiator Structure, and there’s a company profile on Trueanalog Strictly OEM, based in Panyu, Southern China. And this month's Test Bench characterizes two new compressions drivers from Brazilian pro sound OEM PRV Audio. Download your copy now!

In this edition, we kick off 2017 with an overview of what the 2017 NAMM and Integrated Systems Europe (ISE) trade shows might bring. This month's Spotlight features an important article by Marian Liebig (Klippel), discussing the specific challenges of Testing Mobile Devices such as Bluetooth headphones and smartphones. Vance Dickason test the SB Acoustics 6.5” MR16P-4 Satori midrange, and the 6.5” 6MBX44 midwoofer from B&C Speakers.

This Spotlight reference article details a simple and fast procedure for testing the diaphragm used in microspeakers, headphones, tweeters, and microphones. Meaningful information comparable to Stiffness KMS and Mechanical Resistance RMS of the Thiele-Small (T-S) parameters is the basis for tuning the production process and for communication between transducer manufacturers and soft parts suppliers. This article was originally published in Voice Coil, January 2016.

Voice Coil September 2016 features an overview article of KLIPPEL’s QC Version 5 loudspeaker testing system. In Acoustic Patents, James Croft reviews a recently granted patented on Inverse Horn Loudspeakers, which is the third patent granted on Atlantic Technology’s H-PAS (High Pressure Acceleration System) low-frequency system. In this month’s Test Bench, Vance Dickason characterizes the DE990TN-8 1.4” driver from B&C Speakers and the GBS-135F25AL02-04 midbass driver 5.25” woofer from Tymphany.

For 2016, our annual Loudspeaker Industry Sourcebook (LIS 2016) directory has gained an entirely new dimension. The online directory was updated and contains complete listings and category indexes, which make this annual publication such an invaluable resource for the industry. In this edition, readers will also find a complete series of must-read articles for anyone in the audio industry: feature articles, industry reports, and company profiles, as well as our annual query about the state of the industry, with contributions from distinguished market executives and professionals.

Recently, there has been increased demand for loudspeaker 3-D directivity measurements both in the near- and far-fields for different applications. New holographic near-field scanning techniques provide new ways to determine the sound pressure at any point in the 3-D sound field. This article was originally published in Voice Coil, May 2015.

Get your agenda ready for the 2016 National Association of Music Merchants (NAMM) Show in Anaheim, CA, and the Integrated Systems Europe (ISE) trade show, being held February 9–12, 2016, in Amsterdam. Read about a new transducer technology from Christianson Audio, and a great reference article on “Micro Suspension Part Measurements.” This month’s Test Bench characterizes a high-end 5.25” mid-bass driver from Motus Audio and a Pro Sound 10” woofer from MAG.

This Test Bench analysis discusses Celestion CF1840JD pro sound 18” woofer. The CF1840JD is a fairly high power handling woofer rated at 1,000 WRMS (AES standard), featuring a substantial ferrite finite element analysis (FEA) optimized motor assembly, an 18” Kevlar-loaded paper cone and large 5.5” diameter paper dust cap. This article was originally published in Voice Coil, December 2014.

Acoustic design and measurement firm Warkwyn, recently acquired by US OEM speaker manufacturer MISCO, announced that it has completed the relocation of all operations from Ontario, Canada to Minneapolis and is now fully operational. The company also announced that its role as North American sales and training agent for Klippel GmbH has been renewed.