Practical Test & Measurement: The Proof Is in the Testing

The Klippel Near Field Scanner System (NFS) was used for the critical testing and measurement of Holoplot's X1 Matrix Array compensation algorithm capabilities. All our readers who have appreciated the story of the development of the unique Holoplot technology, published in the September 2022 issue of audioXpress, will enjoy reading about how Klippel and Holoplot worked to overcome frequency absorption and gain reduction challenges that resulted from the need to conceal the X1 systems behind an acoustically semi-transparent projection panel.

Vance Dickason received two of the latest products to come out of the R&D labs of Acustica Beyma, the Spanish pro sound OEM transducer manufacturer, which always introduced some significant proprietary technologies in its transducers. The results are now visible in a new set of transducers that crossover from pure professional audio applications into the studio and high end world. This review addresses the new Beyma T-25S 1" silk dome tweeter. This article was originally published in Voice Coil, December 2022.

Vance Dickason received two of the latest products to come out of the R&D labs of Acustica Beyma, the Spanish pro sound OEM transducer manufacturer, which celebrated 50 years in 2019. This review focuses on the T-25M NFM 1" aluminum/magnesium alloy metal dome tweeter. Specifications detail a 20W AES power handling, recommended crossover frequency of 2.5kHz (with a 12dB/octave high-pass filter), and 88dB at 2.83V/1m sensitivity. This article was originally published in Voice Coil, December 2022.

Voice Coil December 2022 features an updated directory of Measurement Microphones Vendors, Mike Klasco writes about how to Enhance Low-Frequency Performance, and Vance Dickason reminds us that there is a more realistic way to map speaker resonances. Test Bench characterizes two tweeters from Beyma's new Near and Mid Field (NMF) series: the T-25M 1" aluminum/magnesium alloy metal dome tweeter, and the similar T-25S 1" silk dome tweeter.

Get the full update on audio technologies for Installation, Distributed Audio, and Multiroom, learn how the Klippel NFS was used for measuring Holoplot's X1 Matrix Array compensation algorithm capabilities, and read about the multiple technologies Improving Wireless Audio, including using Ultra-Wideband (UWB) for high-quality wireless audio streaming. Learn how to calculate RIAA parts values for phono amps, discover lesser-known tubes used for audio applications, and much more.