Audio Equalizer

PC-Board Connections

Terminal Connector Finger

AUDIO INPUT 5, 8, 14, 21
AUDIO OUTPUT 4, 7, 13, 20
+9 - 20 v 2
ground 1, 6, 9, 12, 11, 6, 19, 22

Except as indicated, decimal values of capacitance are in microfarads (mF); others are in picofarads (pF); resistances are in ohms; k = 1,000

This schematic represents one of four sections (channels) on the PC board.

Designed for communications use, this equalizer circuit uses a Mitsubishi M5226P audio equalizer IC to adjust frequency response. It runs from a 9 to 20 V supply. C6 through C16 are polyester film capacitors of +- 5% tolerance.

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Audio Equalizer - Circuitos de Electronica