DEVICE FOR REMOVING THERMAL COMPRESSION OF A LOUDSPEAKER Russian patent published in 2006 - IPC H04R3/08 H03F1/30 

FIELD: sound reproduction technologies.

SUBSTANCE: device for removing thermal compression of loudspeaker contains loudspeaker, including not less than one dynamic head, power amplifier, having inverting and non-inverting inputs and output, not less than one rejecting correction circuit, circuit for compensating inductiveness of coil of loudspeaker head and resistor of negative check connection. Dynamic head of loudspeaker is connected by one output to output of amplifier, and by second one to inverting input of amplifier. Rejecting correction circuit is connected in parallel to loudspeaker and consists of serially connected resistor, capacitor and coil. Circuit for compensating inductance of coil of loudspeaker head is also connected in parallel to loudspeaker and consists of serially connected resistor and capacitor. Check connection resistor is connected by one output to inverting input of aforementioned amplifier, and by second one - to common wire. Loudspeaker, rejecting correction circuits, circuit for compensating inductance of coil and resistor together form circuit of negative check connection of amplifier. Amplifier in such configuration forms a current generator for loudspeaker, rejecting circuits and compensation circuit.

EFFECT: removed thermal compression of loudspeaker, decreased distortions, improved micro-dynamics of sound reproduction.

1 cl, 6 dwg