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Folded triangular sidewall ducted ports for loudspeaker enclosure
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Axial magnet assisted radial magnet air return motor for electromagnetic transducer
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Overlapping surround roll for loudspeaker
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Bessel soundbar
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Magnetically tapered air gap for electromagnetic transducer
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Magnetically tapered air gap for electromagnetic transducer
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MTM of bessels loudspeaker
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Bessel array with non-empty null positions
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Bessel dipole loudspeaker
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Bessel array with full amplitude signal to half amplitude position transducers
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Selectable impedance, constant efficiency electromagnetic transducer
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Bessel array
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Multi-gap air return motor for electromagnetic transducer
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Semi-radially-charged conical magnet for electromagnetic transducer
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Compound-driven augmented passive radiator
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Chamber-loaded augmented passive radiator
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Hard disk drive with multiple spindles
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Single-sided Bessel array
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