10 Band Graphic Equalizer
This is 10 band graphic equalizer for one channel (mono)
audio system. You need build 2 similiar
circuits for 2 channel (stereo) audio system.
This equalizer build based on TL074 low noise JFET op-amp which will give you high quality audio output.
| R1....20= 10Kohms | C4= 10nF polyester | C18= 68pF polysterine | | R21....40= 1Mohms | C5= 47nF polyester | C19= 360pF polysterine | | R41= 10Kohms | C6= 4.7nF polyester | C20= 36pF polysterine | | R42= 1Kohms | C7= 22nF polyester | C21= 4.7uF polyester | | R43.....52= 2.2Kohms | C8= 2.2nF polyester | C22-23= 33pF polysterine | | R53.....62= 47Kohms | C9= 12nF polyester | C24= 10uF 25V | | R63-64-66-67= 47Kohms | C10= 1.2nF polyester | C25-26= 47uF 25V | | R65= 10Kohms | C11= 5.6nF polyester | C27...32= 47nF polyester | | R68-69= 47 ohms 1/2W | C12= 560pF polysterine | IC1...3= TL074 | | RV1....10= 100Kohms lin FADER | C13= 2.7nF polyester | S1= 2X4 SW for stereo | | RV11= 10Kohms log. | C14= 270pF polysterine |
| | C1= 180nF polyester | C15= 1.5nF polyester |
| | C2= 18nF polyester | C16= 150pF polysterine |
| | C3= 100nF polyester | C17= 680pF polysterine |
| |
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