Ported reflex horn

Porting

Pre-formed speaker grille cloth

Protective acoustic cover assembly

Pyramid speaker assembly

Radial sound port speaker

Reduction of standing waves and intermodulation distortion in el

Reentrant cone driven loudspeaker

Reflex compression valve - divided chamber loudspeaker cabinet

Reflex folded horn speaker enclosure

Resonating chamber

Self-cooled loudspeaker

Self-draining grill and system incorporating the same

Simulated rock speaker assembly

Sound and vibration transmission pad and system

Sound collecting and concentrating device for attaching to the b

Sound collecting and concentrating device for attaching to the b

Sound control apparatus

Sound distributor with symmetry of revolution

Sound enhancing speaking cabinet for a removable speaker...