Ferroelectric composite film acoustic transducer

Ferrofluid centered voice coil speaker

Fiber optic earpiece to reduce radiation transmitted to a...

Fiber-honeycomb-fiber sandwich speaker diaphragm and method

Fidelity speaker

Field layer speaker for consumer products

Field serviceable planar loudspeaker

Film-type audio output apparatus

Filter circuit for an electret microphone

Fireplace accessory

Fix mounted earphone jack

Fixation of speaker to a monitor

Fixed mounting loudspeaker with removable chassis

Fixing assembly for a helmet headset

Fixing device of speaker unit for portable computer

Flat acoustic conversion device

Flat panel loudspeaker arrangement

Flat panel loudspeaker system

Flat panel monitor frame with integral speakers

Flat panel speaker