All items tagged with loudspeaker measurements (80)

Loudspeaker Knowledge Inside and Out in Voice Coil March 2021

February 26, 2021 by audioXpress Staff

Loudspeaker Knowledge Inside and Out in Voice Coil March 2021

In this edition of Voice Coil, Steve Temme explains "How to Measure Free-Field Speaker Response without an Anechoic Chamber," Mike Klasco writes about "Plastics and Composites for Audio Products in 2021," and there's an updated Speaker Enclosure Vendor Directory. James Croft provides a fascinating patent review of a speaker assembly design for low-frequency control using an acoustic dipole. And Vance Dickason characterizes two new tweeters: the D2404 Ellipticor Tweeter from Scan-Speak, and the Satori AT60NC-4 AMT Tweeter from SB Acoustics. Now available in print and online!

Voice Coil Lab Notes: Phase, Group Delay, and Impulse Response - A Quick Primer

February 24, 2021 by Christopher J. Struck

Voice Coil Lab Notes: Phase, Group Delay, and Impulse Response - A Quick Primer

This short article by Chris Struck (CJS Labs) is mainly focused on the definition and interpretation of phase, helping to make sense of complex data. This reference article is an expanded version of a previous Lab Note published by CJS Labs, and is certainly a great summary of essential knowledge in speaker design. This article was originally published in Voice Coil, December 2020.

Klippel Analyzer System Receives Software Updates for Testing DSP-Based Audio Devices

November 17, 2020 by Joao Martins

Klippel Analyzer System Receives Software Updates for Testing DSP-Based Audio Devices

Klippel has been keeping busy in the last months, continuously improving their measurement technology for loudspeakers and audio systems. With the dB-Lab 210.918 and QC 6.7 software updates, Klippel introduced new tools for testing DSP-enhanced speakers, headphones and connected audio systems, first with and hardware add-on for the SCN Scanning Vibrometer, and second with an extension for automatic testing at multiple excitation levels using the TRF module.

Practical Test & Measurement: Fast and Reliable End-of-Line Acoustic Defect Detection

September 23, 2020 by Wolfgang Klippel

Practical Test & Measurement: Fast and Reliable End-of-Line Acoustic Defect Detection

This article discusses end-of-line testing, a crucial step in production, which requires very specific procedures and measurements. Specifically, the authors focus on testing irregular acoustic defects (also known as Rub & Buzz) to reduce the test time and optimal solutions to speed automatic testing in a production environment. This article was originally published in audioXpress, September 2020.

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Practical Test & Measurement: Loudspeaker Measurements at Home - A Guide for Building Your Own Test Chamber

September 9, 2020 by Geoff Hill

Practical Test & Measurement: Loudspeaker Measurements at Home - A Guide for Building Your Own Test Chamber

Our friend Geoff Hill, the inventor of the original tetrahedral test chamber (TTC), explores how to do loudspeaker measurements at home. For those of us without an anechoic chamber at home, Hill explains how to build our own test chamber. With the build description, he also provides a valuable guide on alternative loudspeaker measurement techniques. This article was originally published in audioXpress, September 2020.

audioXpress September 2020 Speaker Focus Edition Is Now Available!

August 10, 2020 by audioXpress Staff

audioXpress September 2020 Speaker Focus Edition Is Now Available!

Our always popular loudspeaker edition is now available online and in print! audioXpress' Speaker Builder, Speaker Focus edition covers loudspeaker building, design, and testing with a balanced amount of DIY, speaker history, theory, R&D, and manufacturing articles. Read two articles about speaker history, a review of the Magnepan LRS, explore the details of two amazing speaker builds, and learn how to do loudspeaker measurements at home. And there's much more in speaker research and development, measurement, and production!

New Speakerbench Online Tool for Assisting in Speaker Design Calculations

June 19, 2020 by audioXpress Staff

New Speakerbench Online Tool for Assisting in Speaker Design Calculations

Speakerbench is a web-based application created by Jeff Candy (San Diego, CA) and Claus Futtrup (SEAS, Norway), combining several special-purpose modules aimed at low-frequency analysis and design of loudspeakers. According to the authors, the online tool is made available to whoever might find it useful, including the loudspeaker DIY community. The authors encourage user feedback and even invite software developers to implement the techniques.

Klippel Expands Managing Board with General Manager Appointment

May 20, 2020 by audioXpress Staff

Klippel Expands Managing Board with General Manager Appointment

Klippel GmbH, one of the global leading companies in the field of measurement technology for loudspeakers and audio systems, founded in 1997 by Dr. Wolfgang Klippel, announced that Benjamin Barth has been appointed general manager to its managing board. Barth has worked with Klippel for the past eight years and his appointment will allow Wolfgang Klippel to focus more on research and education, while the company aims to expand its portfolio of products and services.

Studio Six Digital Discounts AudioTools App, Test Microphones and Interfaces

May 4, 2020 by audioXpress Staff

Studio Six Digital Discounts AudioTools App, Test Microphones and Interfaces

Studio Six Digital, designers of the popular AudioTools test and measurement system for the Apple iOS operating system, has discounted the AudioTools app by 50%, and the full suite of in-app upgrades by 30%. Now, they are also offering reduced pricing on all of their iOS and USB test & measurement microphones and audio interfaces to accommodate work-from-home technicians who have been displaced from their labs during the COVID-19 lockdown.

Fresh From the Bench: Dayton Audio Test System (DATS) V3

April 22, 2020 by David Logvin

Fresh From the Bench: Dayton Audio Test System (DATS) V3

After a decade of widespread use, the Dayton Audio Test System (DATS) has acquired an impressive reputation for fast and accurate testing. Now, Dayton Audio has taken the easy-to-use audio test system and improved it in almost every way when creating the DATS V3 Computer-Based Audio Component Test System. This is an ultraportable audio test system that provides a reliable method for collection of Thiele-Small parameters, loudspeaker measurements and component measurements. This article was originally published in audioXpress, March 2020.

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