All items tagged with Voice Coil Issues (56)

Test Bench: Wavecor’s TW045WA01 Coaxial Cloth Dome/Ceramic Cone Tweeter

June 21, 2023 by Vance Dickason

Test Bench: Wavecor’s TW045WA01 Coaxial Cloth Dome/Ceramic Cone Tweeter

This Test Bench characterizes the innovative TW045WA01 dual-diaphragm coaxial tweeter from Wavecor. This driver's dual-diaphragm assembly combines a 22mm coated textile dome for high-frequency extension and a 45mm ceramic/aluminum cone, which adds low-frequency output and efficiency. The hybrid design incorporates a dual neodymium magnet motor structure and sculpted foam damping ring attached to the faceplate. A very unique driver that is certain to appear in new two-channel high-end audio loudspeakers.

Voice Coil Focus: Acoustical Characteristics of Adhesive Joints and Cone Treatments

April 18, 2023 by Mike Klasco and Steve Tatarunis

Voice Coil Focus: Acoustical Characteristics of Adhesive Joints and Cone Treatments

There seems to be a lack of consideration and understanding of the acoustical characteristics of the loudspeaker’s many glue joints. In this article for Voice Coil, Mike Klasco and Steve Tatarunis detail how the influence and use of glue joints and diaphragm treatments can be used as a design tool. The report also details some significant new material options and design and measurement tools available. This article was originally published in Voice Coil, July 2017.

Test Bench-The 6CXN36 Coaxial 6.5" Pro Sound Driver from B&C Speakers

February 1, 2023 by Vance Dickason

Test Bench-The 6CXN36 Coaxial 6.5" Pro Sound Driver from B&C Speakers

This Test Bench characterizes the 6CXN36 6.5" coincident coax transducer, a professional audio driver from Italian manufacturer B&C Speakers and fairly similar to the company's 5.25” 5CXN44 reviewed in Voice Coil, August 2021, which uses a nearly identical compression driver. The cooling for the 6CXN36 is exclusively provided by the motor mass, which is substantial, and no vents are required for the impressive 200W continuous power handling rating in a small diameter driver such as this.

Voice Coil November 2022 Celebrates the Loudspeaker industry

October 28, 2022 by audioXpress Staff

Voice Coil November 2022 Celebrates the Loudspeaker industry

Happy 36th Anniversary Voice Coil! The November 2022 issue of Voice Coil once again celebrates the launch of this periodical as an information resource for the loudspeaker industry. Also, this month, Mike Klasco writes about technologies and solutions to enhance low-frequency performance, and James Croft reviews a recent patent awarded to Panasonic for a loudspeaker arrangement for a Near to the Ear Subwoofer in a car seat. For this month's Test Bench, Vance Dickason characterizes the 6CXN36 coaxial 6.5” pro sound driver from B&C Speakers, and Wavecor’s FR4X-6WA01 compact oval full-range driver. Now available in print, digital and online.

Patent Review: High Displacement Acoustic Transducer Systems

August 10, 2022 by James Croft

Patent Review: High Displacement Acoustic Transducer Systems

In this article, James Croft looks at a patent awarded to David Russell (Toronto, CA); and John French (Caledon, East, CA) on behalf of Audera Acoustics, Inc., Schomberg CA. The patent describes a generic acoustic high displacement transducer system, containing a diaphragm position sensing module, a controller with a transmitter, so that the voice coil moves at least partially in response to the control signal.

Headphone Testing and Lots of Speaker Knowledge in Voice Coil June 2022

May 27, 2022 by audioXpress Staff

Headphone Testing and Lots of Speaker Knowledge in Voice Coil June 2022

Another great issue of Voice Coil magazine. Vance Dickason writes about the Multi-Tone Measurement Module (MTON) available for the Klippel KA3 Analyzer. Mike Klasco and Nora Wong (Menlo Scientific) compiled an updated Directory of Headphone Test & Measurement Equipment for 2022. We revisit a 2004 patent of a speaker using an "Internal Negative Stiffness Mechanism." And in Test Bench, Vance Dickason characterizes the latest Celestion CDX1-1412 1" Compression Driver and a new 3" dome midrange from Tang Band Speaker (TB Speaker).

Stay on Top of Loudspeaker Industry Developments with Voice Coil April 2022

March 29, 2022 by audioXpress Staff

Stay on Top of Loudspeaker Industry Developments with Voice Coil April 2022

Voice Coil April 2022 is now available and brings an interesting overview of the latest updates to Loudsoft's FINE Suspension Nonlinear FEA Spider and Surround Design software. Mike Klasco discusses Cables, Lead Wires, and Connector/Terminal Technology, and there's an updated directory of vendors and manufacturers in those product segments. Then, Vance Dickason characterizes the AMT 23CM1.1-C Air Motion Transformer from Mundorf, and the Beyma CD1ND 1" Polyimide Diaphragm Compression Driver and TD-194 compact horn.

Test Bench: The E150HE-44 5.5” Full-Range Subwoofer from the Dayton Audio Epique Line

February 24, 2022 by Vance Dickason

Test Bench: The E150HE-44 5.5” Full-Range Subwoofer from the Dayton Audio Epique Line

This Test Bench explication focuses on the Dayton Audio Epique MMAG E150HE-44 "full-range subwoofer," in itself an interesting concept. Like its larger E180HE-44 brother in the Epique line, the E150HE-44 is based on the patented Multiple Magnet Air Gap (MMAG) technology invented by Enrique Stiles. The two new Dayton Audio Epique MMAG woofers were designed with direct support by Enrique as an independent transducer engineering consultant, working in conjunction with the engineering team at Dayton Audio. This article was originally published in Voice Coil, December 2021.

Voice Coil November 2020 Is Now Available! Happy 34th Anniversary Voice Coil!

October 26, 2020 by audioXpress Staff

Voice Coil November 2020 Is Now Available! Happy 34th Anniversary Voice Coil!

November signals another anniversary for Voice Coil, the leading periodical for the loudspeaker industry. In this edition, Md Mehedi writes about how new Hiperco alloys can contribute to improved microspeakers, Mike Klasco discusses "This Year’s Crop of Measurement Microphones," followed by a directory on the topic. And in Test Bench, Vance Dickason characterizes the new NERO-6MRN150D pro audio midrange from SB Audience, and the SDx10 home audio woofer from CSS Audio. Access it online now!

Expanded Perspectives on Loudspeaker Enclosure Materials with Voice Coil March 2019

February 26, 2019 by audioXpress Staff

Expanded Perspectives on Loudspeaker Enclosure Materials with Voice Coil March 2019

Voice Coil March 2019 is now available and this issue focuses on the vital, but seldom addressed, topic of loudspeaker enclosure materials. Mike Klasco reviews and looks ahead at all the materials and design approaches for loudspeaker enclosures, and the edition also includes a complete directory for sourcing vendors in this area. James Croft reviews a Coaxial Centerbody Point-Source (CCPS) Horn Speaker System patent, and Vance Dickason characterizes three new tweeters on Test Bench.

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