Is not your sound system a good one? How to improve it better?

First, a speaker must respond to a full audio frequency. But it may be too expensive.

Second, Using a graphic equalizer circuit can adjust the sound frequency, too.

5 Graphic equalizer using LA3600

This circuit 5 Channels 2 Octave Graphic Equaliser, easy to make equalizer,
because using IC LA3600 (easy to use)

For you who take an interesting sound of music side may nobody strange Graphic Equalizer circuit. But in you who is a novice, something will build this some group circuit gets into trouble moderately difficult.

Today I am going to show you the 5 Channels Graphic Equalizer circuit. Because it uses the integrated circuit LA3600.

It is pillar equipment with the convenience that uses IC LA3600 just one only. As a result, can decorate the sound of music has every full frequency sound section already.

You who are a novice and love the saving may don’t miss group this circuit.
Cut at frequencies of 50Hz, 200HZ,800Hz,3.2kHz, and 10kHz.
The supply voltage may be anything from +12V.
Besides I still lead model PCB keep can give testimony try to build convenient increasingly.

PCB 5 Channels Graphic Equaliser by LA3600

10 Channel graphic equalizer using LA3600

In addition to using the LA3600 IC, above was the 5 channel graphic equalizer. We can also be designed was the 10 Channel Graphic equalizer circuit. By connection with the other IC LA3600. In the Figure is 10 channel equalizer circuit, which we have designed for the Q = 4. And uses the center frequency of the IC is interruption. Reason The first circuit be work at odd channels, including channels 1,3,5,7,9. As for second IC be doing in dual channel namely 2,4,6,8,10 channel. The strong point of this circuit be will reduce the interference between adjusting the volume the center frequencies similar is rise efficiency of the circuit And the sound quality is better than a general.

10 Channels Graphic Equalizer circuit by LA3600 IC

Construction
We assemble the components on the PCB properly and check soldering points must be tightly all points. Then we solder to the both PCB circuit are the volume and the equipment of IC join together successfully, as shown. When finished, we supply positive 12V circuit to be used immediately, without any adjustment.

The PCB of this circuit

Graphic equalizer using 4558 LF353

This Graphic equalizer circuit using op-amp 4558-LF353 circuit 5 Channels 2 Octave Graphic Equaliser,easy to make equalizer,
because using IC 4558 or LM1458 or LF353 (nice)
If you are seeking Graphic Equalizer Circuit at can fine decorate the sound of music has full frequency sound section. As a result try out group this circuit before. May don’t be defeated.
Cut at frequencies of 50Hz, 200HZ,800Hz,3.2kHz and 12kHz.
Supply voltage may be anything from -15V GND -15V for IC 4558.
Besides I still lead model PCB try build can be usable easy increasingly sir.

PCB 5 Channels 2 Octave Graphic Equaliser by 4558

Oh.. This circuit is difficult.  Go to 

Transistor equalizer circuit diagram

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