Simple guitar amplifier circuit consist bass and treble circuit which is not appropriate. A sophisticated guitar amplifier must contain individual control for very string. Here is simple tone control circuit for guitar which has individual string control with bass and treble facility.
The circuit of tone control for guitar amplifier is build around two most popular and low cost op-amplifier IC 741. This circuit is designed to control tone of 6-band of frequency 40Hz, 155 HZ, 625 Hz, 2.5 KHz and 10 KHz respectively. This frequency is control by variable resistor VR1 to VR6.
This circuit is used as couple between pre-amplifier and power amplifier i.e. connected between pre-amplifier and power amplifier. If the volume is not available then we may change the value of resistor R13 between 2.2K and 3.3K.
This circuit can also use as graphic equalizer with necessary modification.
Check out other useful circuit for guitar posted in bestengineeringprojects.comÂ
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- Guitar Amplifier | Convert Hawain Guitar to an Electric Guitar
PARTS LIST OF TONE CONTROL FOR GUITAR AMPLIFIER USING 741
| Resistor (all ¼-watt, ± 5% Carbon) |
| R1 – R12 = 10 KΩ
R13 = 1.2 KΩ R14 = 47 KΩ VR1 – VR6 = 10 KΩ VR7 = 250 KΩ |
| Capacitors |
| C1, C2 = 0.39 µF (Ceramic Disc)
C3, C4 = 0.1 µF (Ceramic Disc) C5, C6 = 0.025 µF (Ceramic Disc) C7, C8 = 0.018 µF (Ceramic Disc) C9, C10 = 3300 pF (Ceramic Disc) C11, C12 = 1600 pF (Ceramic Disc) C13, C14 = 5 µF, 25V (Electrolytic capacitor) |
| Semiconductors |
| IC1, IC2 = 741 (General Purpose Operational Amplifier) |
did you record the video? i want to see. please show me the video. hopefully, it may help me in final project. thank you.
the VR7 = 250k is linear or log?
and value of capacitor is 0,025uF or 0,022uF?
You can use any type , but i recommended you to use log type if possible.
thanks!!!!
Hello. Please, can I have a graphic egalizer schematic from this basic circuit after necessary modification. Thanks.
Hi, we had already posted various graphic equalizer circuits.
1. 10 Band Graphic Equalizer Circuit
2. 8W + 8W Stereo Amplifier with Graphic Equalisers
3. 5 Band Graphic Equalizer Circuit