5 Channel Stereo Tone Control or Graphic Equalizer Schematic Circuit Diagram Using 4558 IC & 10 Transistors

To build a 5-band stereo graphic equalizer, five stereo "slide potentiometers" are used, but a rotary potentiometer is used here; only for this reason, it should be called 5-channel tone control. If you want, you can build a five-channel graphic equalizer by following the circuit diagram given below.

5 Band Stereo Graphic Equalizer or Audio Tone Controller Schematic Circuit Diagram Using 4558 IC And 10 Transistors.

Reckless Bass Boost Capacity
Smooth bass treble controlled sound
Excellent Midrange Frequency Audio Controller
The world-famous

• Project Name- 5 Band Graphic Equalizer or 5 Channel Audio Tone Controller.

Sanyo company in Japan makes an Audio Graphic Equalizer IC; the number of that IC is LA3600, and the internal schematic circuit inside that IC uses 5 NPN transistors and an operational amplifier or op-amp IC 4558. This schematic circuit diagram I designed follows that circuit diagram strictly. I have built many commercial graphic equalizers with this schematic circuit diagram. This graphic equalizer's performance is unique, with crystal clear sound quality and excellent tone-controlling capacity. The LA 3600 IC is a monophonic graphic equalizer IC, So two ICs are used in the stereo sound system. So, to make this five-band graphic equalizer with transistors, you need to make a board with ten transistors; that is, you have to make a double circuit on a PCB (For stereographic equalizer or tone controller).

Microphone Preamplifier Circuit Diagram Circuit Diagram 

5 Channel Audio Tone Control Board

• Operating Voltage- Dual Power +12V GND -12V, or +18V GND -18V

• Frequency -108Hz, 334KHz, 1Khz, 3.43KHz, 10KHz

5 Channel Stereo Audio Tone Control Board Using Ten Transistor & 4558 IC & 10 Transistors

The figure below shows a schematic circuit diagram of a five-band graphic equalizer or five-channel tone controller. It requires ten C2120 or BC547 or equivalent NPN transistors and a 4558 dual op-amp IC. This schematic circuit diagram is a high-performance graphic equalizer or audio tone control. Its high pass filter, low pass filter, and two more categories of mid-range audio frequency control capabilities are unmatched and very high quality. This graphic equalizer's Bass Boost system and Treble control are fantastic.

5 Band Stereo Graphic Equalizer Schematic Circuit Diagram Using 4558

 Components List -
• Q1, Q2, Q3, Q4, Q5 =  C2120 NPN Transistor or equavalent.
• U1 A and B  = 4558 Op-amp IC

• R1, R2, R3, R9, R10, R11, R12, R13 = 4.7KΩ
• R3, R15, R16, R17, R18, R19 = 68KΩ 
• R4, R5, R6, R7,  • R8 = 1.2KΩ.  • R22 = 10KΩ

• R20 And R21 = 470Ω For +12V GND -12V Dual Power Supply
1.2K For +18V GND -18V Dual Power Supply.
3.3KΩ For +30V GND -30V  Dual Power Supply.

• C1= 3.3µfd  • C2= 102  • C3= 392  • C4= 103  • C5= 392  • C6= 112  • C7= 471
• C8= 684  • C9= 224  • C10= 682  • C11= 223  • C12= 682
• C13, C14 = 220µfd   • C15, C16= 104  • C17= 2.2µfd  • C18= 22µfd
• RV1, RV2, RV3, RV4, RV5, RV6= 100KΩ.
( All capacitors are not less than 25 volts)

• D1, And D2=  6V Zener Diode

4558 IC Data to Make Audio Tone Control

Note: The IC indicated as U1 in the circuit diagram is a KA4558 Op-amp IC. Pins 1, 2, and 3 of this IC or the A part must be used to build a 5-transistor mono graphic equalizer or tone control board, and pins 5, 6, 7, or the B part should be used for the 10-transistor stereo graphic equalizer or tone control board.

Video Tutorial for Making 5 Band Stereo Tone Control or Graphic Equalizer with 4558 IC and 10 Transistors.

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