Diagnosing Design Issues Using the Klippel Distortion Analyzer

The founder and principal of Redrock Acoustics, renowned for offering engineering and design services, Patrick Turnmire has tested thousands of driver samples during his career, including countless for Voice Coil's Test Bench. Having recently reopened access to its Klippel testing and transducer analysis services, Turnmire shares his vast experience, advising on how to make sure the tests are robust enough to clearly see the loudspeaker performance.

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.

PHABRIX, the manufacturer of video and audio broadcast Test and Measurement instruments that was acquired by Leader Electronics in 2019, announced that the 8000th of its Sx handheld unit is about to roll off the company’s production line. This significant milestone helps cement the brand's position as the broadcast industry’s most popular test and measurement device despite only being launched not even 14 years ago.

Primarily targeted at production test applications, the APx517B debuted at the end of 2020 and supplements AP's powerful product line of analyzers, which are considered the gold standard in audio measurement. In his review, David Logvin explores audio measurements with this fully integrated hardware, that combines multiple digital interface options all with accredited calibration. This article was originally published in audioXpress, August 2021.

USB Specifications, unified by products using a USB Type-C connector, commonly called USB-C, promise standardized power and data delivery. Unfortunately, poorly tested devices in the market can make USB-C systems unpredictable, expensive, and frustrating to consumers. Improving USB-C testing is critical to delivering on the “one connector to rule them all” promise of USB-C. Acroname's new USBHub3c makes testing USB-C devices easier, safer, and cheaper.

Member Name: Shannon Parks Location: Mahomet, IL An audio engineer at his own company, Parks Audio, Shannon Parks is proud to have almost all the Audio Amateur magazines in his library and he has been reading audioXpress for quite sometime. Shannon owns Parks Audio and is the administrator of the DIYtube forums (www.diytube.com).

In this month’s issue, you can read our review of the elysia xfilter 500, an extraordinary equalizer “Made in Germany” in a 500-series format that offers a precise stereo image based on computer-selected, stepped potentiometers and low-tolerance film capacitors. In …

The XL2-TA sound level meter has received Class 1 type-approval from the Physikalisch-Technische Bundesanstalt (PTB) in Germany. The XL2-TA in combination with the M2230 measurement microphone, is officially listed as a type-approved Class 1 sound level meter. The XL2-TA is …