Down-fill speaker for large scale sound reproduction system
Drive system for acoustic devices
Drive unit for electro-acoustic converter with dual magnetic...
Drive unit for electro-acoustic converter with dual magnetic...
Drive unit for electro-acoustic converter with radially...
Driver and enclosure combination
Driver for a flat acoustic panel
Driver for a horn radiator
Driver for a speaker
Dual basket speaker with replaceable, self-aligning cone...
Dual bi-laminate polymer audio transducer
Dual bi-laminate polymer audio transducer
Dual boundary pressure zone three dimensional microphone and...
Dual cavity pressure microphones
Dual coil drive with multipurpose housing
Dual cone loudspeaker
Dual diaphragm electroacoustic transducer
Dual diaphragm speaker
Dual diverging manifold loudspeaker system
Dual element headphone