Triple Test Bench and the Latest Speaker Patents in Voice Coil July 2023

Another issue of the indispensable Periodical for the Loudspeaker Industry, Voice Coil July 2023 offers the first part of a loudspeaker design tutorial by Peter Larsen. James Croft reviews two patents from Resonado. And serving a generous dose of Test Bench, Vance Dickason characterizes the SB29SDNC-C000-4 29mm cloth dome tweeter from SB Acoustics, the M25 mkII 1" silk dome tweeter from Stereo Integrity, and the NeoPro 5i ribbon tweeter from Fountek Electronics.

The July 2022 issue of Voice Coil offers important resources for the industry with a focus on Adhesives, Coatings and Treatments. Mike Klasco writes about New Thin-Film Technologies for Coatings and Treatments. James Croft returns with a fresh review of a Mayht patent. And Vance Dickason characterizes the recent 38WE/8582T00 15” Ellipticor woofer from Scan-Speak, and explores the historical relevance of the SEAS W15CH001 5.25" Excel Midwoofer and its Hexadym Motor design.

A forthcoming investment in new process equipment with dispensing technology brings with it a number of questions. This article explains why DC rotors from preeflow fulfill all the requirements for profitable and effective dispensing investments. Established in 2008, preeflow ensures precise, purely volumetric dispensing of liquids in the smallest of quantities.

Voice Coil July 2021 is now available and full of valuable articles. Starting with Mike Klasco's insights on glue joints and attachment techniques used in speaker design. Followed by an updated and comprehensive directory of manufacturers and suppliers of adhesives, coatings, and treatments for the speaker industry. James Croft reviews the recent Bidirectional Speaker patent awarded to Resonado Labs, and Vance Dickason places the totally unique Purifi PTT6.5X04-NFA-01 midbass driver on Test Bench, followed by Beyma's 12LEX1300Nd 12” woofer with its unique Maltcross cooling system. Now available in print and online!

The July 2020 edition of Voice Coil magazine is a strong issue, offering the most comprehensive sourcing directory on Adhesives, Coatings, Sealant, and Dispenser Providers in 2020, a Spotlight article by David Lindberg on Waterproofing of Audio Devices, plus the always brilliant patent reviews by James Croft. For July, Vance Dickason characterizes the recent SEAS L19RNX1 woofer from the company's new Prestige Titan Series, and the LD25X, an interesting high-end tweeter from Creative Sound Solutions (CSS). Now available to download!

A truly versatile tool for R&D, assembly or maintenance, the new Autobonder 2101 from Hernon Manufacturing is a benchtop adhesive and sealant dispensing system supporting a wide range of viscosities of materials using different syringe sizes. The new Autobonder 2101 features a programmable controller that provides manual and timed modes, helping to make it into an efficient dispensing tool in multiple applications, from speaker design to electronics.

The July 2019 edition of Voice Coil is now available and loaded with valuable articles, starting with an overview of the new Klippel Controlled Sound (KCS) technology, followed by a detailed article on headphone measurement, and a new backward concept for designing vented enclosures. The July edition also features an updated directory of Adhesives, Coatings, Sealant, and Dispenser Providers. In Test Bench, Vance Dickason characterizes a Faital Pro midrange woofer and a coaxial driver from Tang Band (TB) Speaker. Download your copy now!