Beyond Thiele/Small DUMAX and Klippel Driver Measurement Systems

Anyone who is serious about designing a loudspeaker using dynamic drivers is either familiar with, or has used, Thiele/Small parameters, generally accepted as ways to predict driver behavior in different enclosures. But there are other measurement methods we can use to determine and quantify nonlinearities: the DUMAX system, produced by DLC Design, and the Klippel Analyzer System by Klippel GmbH. This article was originally published in audioXpress, March 2003.

B&K Precision continues to deliver on its promise of delivering reliable and cost-effective test and measurement instruments and announced the expansion of its bench LCR meter family with the addition of two new models that extend the family's test frequencies up to 1 MHz. B&K Precision's new 894 and 895 bench LCR meters provide test frequencies from 20 Hz to 500 kHz and 20 Hz to 1 MHz, respectively, and can measure inductance, capacitance and resistance with 0.05% basic impedance accuracy.

B&K Precision announced the expansion of its current 878B and 879B 40,000-count handheld LCR meters with the addition of a new 100 kHz model, the 880. This new portable LCR meter can measure inductance, capacitance, and resistance with 0.1% basic impedance accuracy. Offering many features typically found only in bench LCR meters, the 880 provides test frequencies up to 100 kHz, selectable test signal levels, and 4-terminal measurement capabilities.