Practical Test & Measurement: What to Measure for Quality Control of Audio Devices

In this Test & Measurement article from Dan Knighten (Audio Precision), the author focuses on the practical question of manufacturing test strategies and objectives and shares what measurements reveal about the device under test, offers suggestions for specific measurements, and provides techniques for various devices and scenarios. This article was originally published in audioXpress, November 2020.

A truly versatile tool for R&D, assembly or maintenance, the new Autobonder 2101 from Hernon Manufacturing is a benchtop adhesive and sealant dispensing system supporting a wide range of viscosities of materials using different syringe sizes. The new Autobonder 2101 features a programmable controller that provides manual and timed modes, helping to make it into an efficient dispensing tool in multiple applications, from speaker design to electronics.

As a leading global sensor supplier, PCB Piezotronics continues to invest in state-of-the-art pressure assembly operations. The company, a wholly owned subsidiary of MTS Systems Corporation, announced the completion of new environmentally controlled clean rooms totaling 4,300 sq. ft. at their Walden Avenue headquarters. Earlier this year, the sensor manufacturer began assembly of all pressure and force products in this new state-of-the-art facility.

The latest portable electronic devices are expected to go everywhere with us and withstand anything, as soon as they leave the assembly line… but what about while they are still on the assembly line? In examining this challenging environment, W. L. Gore & Associates (Gore) developed GORE MEMS Protective Vents, designed to shield the device from extreme conditions faced during manufacturing and maximize yields.

Established in 1958 in Pomona, CA, Globe Plastics, Inc.became a leader in the electronics industry and expanded into advanced engineering materials and compression and injection molding high-strength composites. Since 1992, Globe Plastics found a niche in the sound and lighting industries using processes proved to be far superior and a better value than existing thermoplastics and die-cast aluminum components.