INTERIOR VIEW OF ELECTRO-VOICE MODEL 668 BOOM MICROPHONE
Interior view of Electro-Voice Model 668 boom microphone shows two layers of AcoustifoamTM windscreen which reduces wind blast up to 80 per cent.
Acoustifoam is an "open-pore" polyurethane foam developed by the Foam Division, Scott Paper Company.
Smooth-textured outer layer has 60 pores per lineal inch; coarser inner layer has 20 pores per lineal inch. Windscreen does not affect frequency response of polar pattern.
For: Foam Division
Scott Paper Company From: Ketchum, MacLeod & Grove, Inc. Four
Gateway Center - Pittsburgh, Pa. 15222 A. C. Croft - Phone: 261-5100