Next-Generation Klippel Loudspeaker Parameter Measurement — Fast Large Signal Identification (FLSI)

Klippel introduced the Large Signal Identification (LIS) and Linear Parameter Measurement (LPM) software tools 25 years ago to measure linear and nonlinear loudspeaker parameters in conjunction with Klippel analyzer hardware. To advance the state of loudspeaker parameter measurement, Klippel has now developed the Fast Large Signal Identification (FLSI), a new measurement software module designed to replace both LPM and LSI.

Acoustic simulation has long been a cornerstone for audio professionals, yet the iterative process of design, calculation, and analysis has traditionally been hampered by significant computation times and laborious workflows. AFMG's new Acousteer engine introduces a paradigm shift, transforming direct sound field simulation into an interactive, real-time experience.

In this issue, Jonathan Gerbet explains everything we need to know about the next-generation of Klippel's Fast Large Signal Identification (FLSI) measurement tool. And as scheduled, Mike Klasco prepared a valuable directory of Voice Coil Winders, plus a subdirectory with Converters, Lead Out Wire, and Magnetic Fluid suppliers. For this month's Test Bench, Vance Dickason characterizes the new 10NTLW2500 Pro Sound Tetracoil midbass woofer from Eighteen Sound, followed by the UMII12-22 subwoofer from Dayton Audio's new Ultimax II line.

The August 2025 issue offers a Market Update on New Dimensions in Acoustics, and expands the topic with articles by Daniel Gert Nielsen (Treble), Stefan Feistel and Wolfgang Ahnert (AFMG), and Neil Shaw (Menlo Scientific Acoustics). Richard Honeycutt’s column addresses the Acoustical Effects of Floor Finishes, and Dimitri Danyuk reviews Ethan Winer’s The Audio Circuits Cookbook. Philipp P. Klose reviews the Neumann Reference Immersive Monitoring Environment (RIME) solution, and René Christensen offers a Microacoustics Modeling Primer on Numerical Modeling.