Electromagnetically damped speaker system

Claim 1

AN AUDIO SPEAKER SYSTEM COMPRISING: AN ENCLOSURE OPEN AT ONE SIDE; AN ACOUSTICAL WAVEGUIDE OF GENERALLY CYLINDRICAL CONFIGURATION, OPEN AT EACH END, SAID WAVEGUIDE BEING RIGIDLY MOUNTED WITHIN SAID ENCLOSURE, ONE OPEN END OF SAID WAVEGUIDE FACING THE SAID OPENING OF SAID ENCLOSURE; A DIRECTLY RADIATING LOUSPEAKER PROVIDED WITH A RIMMED DIAPHRAGM, SAID LOUSPEAKER BEING RIGIDLY MOUNTED WITHIN SAID WAVEGUIDE AWND PROXIMATE TO THE OPENING OF SAID ENCLOSURE, THE RIM OF SID DIAPHRAGM DISPOSED IN ABUTTING RELATION TO SAID WAVEGUIDE, AND AT LEAST ONE TRANSDUCER DISPOSED WITHIN SAID WAVEGUIDE PROXIMATE TO AND REARWARDLY OF SAID LOUDSPEAKER, SAID TRANSDUCER COMPRISING A RIMMED DIAPHRAGM DISPOSED TRANSVERSELY IN SAID WAVEGUIDE, THE RIM OF SAID DIAPHRAGM IN ABUTTING RELATION TO AND RIGIDLY MOUNTED WITHIN SAID WAVEGUIDE, SAID DIAPHRAGM ADAPTED TO BE VIBRATED BY SOUNDWAVES FROM THE REAR OR SAID LOUDSPEAKER, AN ARMATURE COIL RIGIDLY SECURED TO SAID DIAPHRAGM AND ADAPTER TO BE MOVED AXIALLY BY SAID VIBRATION OF SAID DIAPHRAGM; AND A MAGNETICALLY POLARIZED MEMBER RIGIDLY DISPOSED WITHIN SAID WAVEGUIDE AND ELECTROMAGNETICALLY PROXIMATE TO SAID AXIAL MOVEMENT OF SAID ARMATURE COIL; WHEREBY SAID VIBRATIONS OF SAID DIAPHRAGM CAUSE SAID ARMATURE TO BE MOVED AXIALLY TO AND FRO IN ELECTROMAGNETIC COUPLING RELATION WITH SAID POLARIZED MEMBER TO THEREBY INDUCE A MAGNETIC FIELD ABOUT SAID COIL OPPOSING THE MAGNETIC FIELD OF SAID POLARIZED MEMBER, TO THEREBY DAMPEN THE MOVEMENT OF SAID COIL AND SAID DIAPHRAGM SECURED TO SAID COIL.