The FK 653 loudness circuit has 3 frequency filters to boost low and high frequency audio signals prior to amplification to give smaller speakers richer and fuller sound or to adjust the ambience to suit individual taste. The FK653 circuit is inserted in the volume control circuit. It may be switched in and out of circuit as desired.

Technical Specification
  • Power Supply : 12VDC @ 5mA max.
  • PCB Dimensions : 2.22" x 1.73" x 0.6" (56.4mm x 43.9mm x 15mm)

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