All items tagged with transducer (63)

Test Bench: The E180HE-44 Full-Range Subwoofer from the Dayton Audio Epique Line

August 25, 2022 by Vance Dickason

Test Bench: The E180HE-44 Full-Range Subwoofer from the Dayton Audio Epique Line

In this article, Vance Dickason characterizes the E180HE-44 woofer, from the Dayton Audio Epique lineup. As with the E150HE from the same range, the E180HE-44 uses the patented Multiple Magnet Air Gap (MMAG) technology, invented by Enrique Stiles and patented by Step Technologies. The E180HE is a scaled up (7") version of the E150HE, and has a similar feature set but with a secondary magnet system comprised of six ferrite disks, which act as magnetic “diodes” pulling the flux from the main magnet into the top 7mm gap. This article was originally published in Voice Coil, May 2022.

Speakers and Transducers - Haptic Devices for Augmentation, Entertainment, and Wellness

August 18, 2022 by Mike Klasco

Speakers and Transducers - Haptic Devices for Augmentation, Entertainment, and Wellness

Expanding on previous articles about bass shakers and motion platforms, this article from Mike Klasco (Menlo Scientific) looks at exciting evolutions in haptic transducers and actuators that are being used in a growing number of applications - all of which depend upon audio sources for input. The ability to interact with the world through vibration and touch is central to all of our lives, and now increasingly so. This article was originally published in audioXpress, February 2022.

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.

Patent Review: Inverse Horn Loudspeakers

August 4, 2022 by James Croft

Patent Review: Inverse Horn Loudspeakers

This article reviews a patent originally granted to inventors Philip R. Clements; (Tempe, AZ), Boaz Shalev; (Needham, MA), and James Joseph Croft, III; (Bellevue, WA), which has now expired. The patent describes a low-frequency transducer system with a multi-compression chamber, where an inverse horn structure is employed in combination with a resonance-distortion filter chamber. This was the third patent granted on Atlantic Technology’s low frequency system known by the trademark name H-PAS (High Pressure Acceleration System). This article was originally published in Voice Coil, September 2016.

Klipsch Announces Speaker Product Line Featuring Resonado Technology

June 21, 2022 by audioXpress Staff

Klipsch Announces Speaker Product Line Featuring Resonado Technology

It's an historical moment for Resonado Labs, which announced a strategic partnership to develop a new line of Klipsch home audio solutions integrating its technologies. Together, the companies aim to develop a line of products engineered to deliver the highest output possible in sleek and compact form factors. A major accomplishment for the speaker technology startup, which has not stopped to surprise the market with its innovative transducers.

Loudsoft FINE Suspension Nonlinear FEA Spider and Surround Design Program

May 25, 2022 by Vance Dickason

Loudsoft FINE Suspension Nonlinear FEA Spider and Surround Design Program

An overview of Loudsoft's latest FINE Suspension Nonlinear FEA Spider and Surround Design software. This new transducer engineering tool, specific to the development of speaker surrounds and spiders (dampers), allows for the simulation of different types of surrounds and spiders from imported DFX files or created from templates with parameters selected by the user, and then outputs the compliance curves similar to the Kms and Cms curves measured by Klippel DA2 or KA3 analyzers.

Test Bench: The AMT200P Pro Sound AMT and XMT200 Horn from Eighteen Sound

February 2, 2022 by Vance Dickason

Test Bench: The AMT200P Pro Sound AMT and XMT200 Horn from Eighteen Sound

This Test Bench article characterizes Eighteen Sound’s AMT200P Air Motion Transformer and accompanying XMT200 6.5” waveguide. This driver is the brand's latest entry into the high-frequency transducer category, specifically designed for the pro sound community. The Eighteen Sound AMT200P includes a rectangular throat with a Kapton diaphragm with a neodymium magnet structure, and is rated for a power handling of 90W AES above 1.2kHz, with a sensitivity of 105dB, and a recommended crossover frequency of 1.2kHz at 48dB/octave. While the AMT200P can be used as a standard planar device it can be also coupled with a dedicated constant directivity horn, the 90°x 20° XMT200, featured in the characterization.

Test Bench: The 15DS100 15” Pro Sound Subwoofer from B&C Speakers

December 8, 2021 by Vance Dickason

Test Bench: The 15DS100 15” Pro Sound Subwoofer from B&C Speakers

This Test Bench explication characterizes the 15DS100 15” professional subwoofer from B&C Speakers. This new transducer from the Italian company is a very high power handling design, able to deliver 3kW continuous (1.6W nominal), thanks to B&C's latest generation of very long voice coils - a great asset in applications from discreet PA subwoofers to three-way PA speakers. The B&C 15DS100-4 uses a proprietary 12-spoke cast aluminum frame with cooling vents for the neodymium FEA motor, which uses a 4” four-layer voice coil wound with round aluminum wire on a non-conducting glass fiber former. This article was originally published in Voice Coil, October 2021.

Parameter Estimation and Box Simulation with Speakerbench (Part 2) - Introducing Speakerbench

November 17, 2021 by Claus Futtrup and Jeff Candy

Parameter Estimation and Box Simulation with Speakerbench (Part 2) - Introducing Speakerbench

In the first part of this work, the authors discussed the difficulties in estimating cabinet losses using the classical Thiele-Small framework, and proposed a solution using an advanced transducer model. In this second article, the authors detail how their Speakerbench web-app offers an accurate and practical approach to this problem, and demonstrate how users will be able to easily and accurately determine the best suitable box volume for a loudspeaker system. This article was originally published in audioXpress, September 2021.

Sound Solutions Introduces Latest High Performance Microspeakers with Unique Coil-Anchor System

November 8, 2021 by audioXpress Staff

Sound Solutions Introduces Latest High Performance Microspeakers with Unique Coil-Anchor System

Sound Solutions International (SSI) introduced its latest family of high-performance microspeakers featuring improvements on loudness, linearity, and distortion levels by featuring the company's Coil-Anchor System (CAS) rocking suppression technology. The new microspeakers can easily scale for multiple applications and requirements in highly constrained mobile and portable designs. The patent-pending high-excursion Manticore speaker family already includes three models for smartphones and laptop/tablet applications.

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