You can use slide potentiometer instead of Variable Resistor (VR) for make the circuit more professional. Finally all base inputs are amplified together by internal op-amp and output audio signal comes out from pin 13. Audio input signal is divided by variable resistors and given to separate base Inputs in the equalizer IC. Hareendran - 04/29/23 You may recall that about a year ago I built a bathroom exhaust fan controller based on readily. This circuit takes single audio Input, you can split stereo audio or you can equalize by two LA3600 ICs. Audio Equalizers Projects Circuits X Top 10 Articles Humidity Sensor Relay MOD T.K. An equalizer (EQ) is an audio filter that isolates certain frequency components from an audio signal, either boosting or lowering them. Each band output can be varied by using variable resistors (VR). A graphic equalizer is a piece of audio equipment that isolates different ranges of frequencies from an audio signal. This circuit is constructed to operates with 12 Volt power supply and this LA3600 IC can have upto 20 volt Vcc supply, five different bands are separated by fixed capacitors and variable resistors. By connecting two LA3600 we can built 10 bands equalizer, by the way we can control different frequency bands. IC LA3600 comes in DIP (Dual Inline Package) 16 pins, and it has on chip one operational amplifier and 5 band graphic equalizer for one channel, the equalizer can be formed by using simple capacitor and variable Resistor units. This LA3600 IC can be used in portable stereo player, Audio mixer, simple audio amplifier circuit and wherever equalizer need. Simple Audio equalizer circuit constructed by using famous 5 band graphic equalizer IC LA3600, this is a monolithic linear IC from sanyo.
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