Accession Number:

ADA076952

Title:

Development of PVF2 Lightweight Portable Loudspeaker.

Descriptive Note:

Final technical rept.,

Corporate Author:

JMR SYSTEMS CORP DERRY NH

Personal Author(s):

Report Date:

1979-09-01

Pagination or Media Count:

19.0

Abstract:

A PVF2 Loudspeaker is described which is very lightweight and delivers 85 dB SPL across the 400-4000 cycle audio band, for use with radio sets ANPRC-77 and ANPRC-70 which provide the signal and power for the transducer. The diaphragm is made of 4 sheets of PVF2, a piezoelectric film with both sides coated with a thin aluminum film which was found to be very unstable in handling and flaking in humidity. The diaphragm presents a capacitive load to the amplifier requiring considerable power from the radio batteries, therefore, the loudspeaker is considered not suitable for man-pack battery operation. Author

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE