231925 ⎘
Details of transducers, loudspeakers or microphones; Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only; Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means; Enclosures comprising vibrating or resonating arrangements using a back-loaded horn
Sub-classes:Mobile computing device receptacle with an acoustic amplification component
#2Loudspeaker assembly
#3THIN HIGH PERFORMANCE CONSTANT DIRECTIVITY WAVEGUIDE AND SPEAKER
#4Speaker and headphone device
#5Keyboard instrument
#6Transmission line loudspeaker
#7Inverse horn loudspeakers
#8Apparatus for providing passive stereo amplification for a portable device
#9Docking station having structure for sound amplification and sound quality enhancement
#10Inverse horn loudspeakers
#11Docking station having structure for sound amplification and sound quality enhancement
#12Aesthetic linear speaker assembly
#13Inverse horn loudspeakers