Magnetic speaker

Mechanical acoustic filter by erosion etching

Member for loudspeaker

Membrane for an electroacoustic transducer

Membrane for electroacoustic converter systems

Method and apparatus for augmentation of sound by enhanced reson

Method and apparatus of expanding acoustic reproduction range

Method for manufacturing speaker-use center cap

Method of forming parylene-diaphragm piezoelectric acoustic...

Method of making a speaker edge containing isocyanate and...

Method of making metal coated foil speaker diaphragm

Method of manufacturing speaker diaphragm

Microphone

Microphone and acoustic equalizer therefor

Microphone assembly fitted to vehicle-mounted control module...

Microphone baffle apparatus

Microphone diaphragm

Microphone windscreen

Microphone windscreen

Microphone windscreen and method of fabricating the same