[ Acoustic conduits; ] cabinets for loudspeakers; diaphragms for acoustics in the nature of electroacoustic membranes; loudspeakers; megaphones; horns for loudspeakers; [ acoustic couplers; ] personal stereos; electroacoustic assemblies in the nature of electroacoustic transducers [ ; pickups ]

'acoust':1,8,20 'assembl':25 'cabinet':3 'conduit':2 'coupler':21 'diaphragm':6 'electroacoust':13,24,30 'horn':17 'loudspeak':5,15,19 'megaphon':16 'membran':14 'natur':11,28 'person':22 'pickup':32 'stereo':23 'transduc':31

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