Voice Coil

Voice Coil August 2018

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IN THIS ISSUE V O L U M E 3 1 , I S S U E 1 0 A U G U S T 2 0 1 8 1 INDUSTRY NEWS & DEVELOPMENTS By Vance Dickason 6 DIRECTORY Voice Coil Manufacturers 2018 By Mike Klasco 10 ACOUSTIC PATENTS By James Croft 16 TEST BENCH A New Midbass Driver, a New Compact Pro Sound AMT, and a Pro Sound Compression Driver By Vance Dickason 29 INDUSTRY WATCH By Vance Dickason By Vance Dickason Audio Precision Releases New App Note Audio Precision has released a new application note called "Loudspeaker Electroacoustic Measurements." In this 33-page application note Audio Precision provides an overview of the key electroacoustic measurements used to characterize the performance of loudspeaker drive units and loudspeaker systems. Audio Precision focuses on the most important objective measurements and refers to industry standards for guidance (see Figure 1). The following loudspeaker measurements are covered in this application note: • Frequency response • Sensitivity • Input voltage/power • Impedance and Thiele-Small parameters Industry News & Developments Figure 1: Audio Precision's new App Note: "Loudspeaker Electroacoustic Measurements"

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