4 band graphic equalizer | Electronic Schematic Diagram https://electronicscheme.net Schematic Diagram & PCB Design Sat, 04 Jul 2015 03:49:13 +0000 en-US hourly 1 https://i0.wp.com/electronicscheme.net/wp-content/uploads/2017/05/cropped-transparent_text_effect.png?fit=32%2C32&ssl=1 4 band graphic equalizer | Electronic Schematic Diagram https://electronicscheme.net 32 32 129969089 4 Band Equalizer https://electronicscheme.net/4-band-equalizer/?utm_source=rss&utm_medium=rss&utm_campaign=4-band-equalizer https://electronicscheme.net/4-band-equalizer/#comments Fri, 12 Nov 2010 06:46:10 +0000 http://electronicscheme.net/?p=625 The following scheme diagram is the four 4 band equalizer circuit. Equalizer device is generally used to improve the fidelity of sound, to emphasize certain […]

The post 4 Band Equalizer first appeared on Electronic Schematic Diagram.]]> The following scheme diagram is the four 4 band equalizer circuit. Equalizer device is generally used to improve the fidelity of sound, to emphasize certain instruments, to remove undesired noises, or to create completely new and different timbres.

4 Band Equalizer circuit diagram

This circuit operated with 12VDC symmetrical / dual polarity power supply. Power supply circuit provided on above diagram. For better power supply output and of course will improve the audio performance, you may use IC regulator LM7812 and LM7815.

The equalizer uses four pieces of variable resistor to cut and boost four range of audio frequency, that are:

  • Low frequency: Freq. 35-680Hz
  • Medium frequency: Freq. 150-3kHz
  • Medium/semi high frequency: Freq. 450-8.5kHz
  • High audio frequency: Freq. 750-15kHz

Download 4 Band Equalizer circuit in PDF document from below link:

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4 Band Equalizer Circuit

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