TREA

Transducers of moving-coil, moving-strip, or moving-wire type

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Industry

  • CPC
  • H04R9/00
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Parent Industries

HELECTRICITY H04Electric communication H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS

Current Industry

H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type

Sub Industries

H04R9/02Details H04R9/022Cooling arrangements H04R9/025Magnetic circuit H04R9/027Air gaps using a magnetic fluid H04R9/04Construction, mounting, or centering of coil H04R9/041Centering H04R9/042by pressurised air H04R9/043Inner suspension or damper H04R9/045Mounting H04R9/046Construction H04R9/047in which the windings of the moving coil lay in the same plane H04R9/048of the ribbon type H04R9/06Loudspeakers H04R9/063using a plurality of acoustic drivers H04R9/066using the principle of inertia H04R9/08Microphones H04R9/10Telephone receivers H04R9/12Gramophone pick-ups using a stylus Recorders using a stylus H04R9/14comprising two or more styli or transducers H04R9/16signals recorded or played back by vibration of a stylus in two orthogonal directions simultaneously H04R9/18Resonant transducers
Industries