Simple Treble Tone Control

The treble control works in a similar manner as the bass control elsewhere in this site, but contains several modifications, of course. One of these is the series network C1-C2– R1– R1 1. The d.c. operating point of IC3 is set with resistors R12 and R13. To ensure that these resistors do not (adversely) affect the control characteristics, they are coupled to the junction of R9 and R1 0. In this way they only affect the low-frequency noise and the load of the opamp. Their value of 10 kΩ is a reasonable compromise. The functions of switches S1– S3 are identical to those of their counterparts in the bass tone control; their influence is seen clearly in the characteristics.

Treble Tone Control Circuit diagram:

Good symmetry between the left-hand and right-hand channels is obtained by the use of 1% versions of R1– R1 3 and C1, C2. The value of resistors R2– R1 0 is purposely different from that of their counterparts in the bass tone control. In the present circuit, the control range starts above 20 kHz. To make sure that a control range of 1 0 dB is available at 20 kHz, the nominal amplification is 3.5 (11 dB ). The control circuit draws a current of about ±10 mA.

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TDA1524 Stereo Tone Control

Here is a stereo preamplifier circuit with built in tone control facility. A very useful circuit using versatile tone control IC TDA 1524 from Phillips.

diagram TDA1524 Stereo Tone Control

This circuit is designed as per the data sheet as an effective stereo-tone & volume control for car stereos , TV sets or any sort of stereo amplifier circuit you want.The circuit includes provisions like bass control, treble control , volume control with inbuilt contour or linear mode option (can be switched in betwwen) and balance. All these functions provided can be controlled by DC voltages or by linear potentiometers.

Note:

• R1 ,R2 ,R3 andR4 can be used for controlling volume, balance, treble and bass respectively.
• If SPDT switch S1 is in position 1 ,the circuit works in contour mode and in position 2 the circuit works in linear mode.
• If you are using a 15-20V supply, you can use that as your pre-amp supply as well. Make sure you test the voltage first in all cases

TDA1524 Tone Control Component:

R1,R2 : 220R Resistor
R3,R4 : 4K7 Resistor
R5 : 2K2 Resistor
R6 : 1K Resistor

C1,C2,C7,C8,C17 : 10 uF ecap
C3,C4 : 47 nF
C5,C6 : 15 nF
C9 : 220 nF poly
C10 : 100 uF 25V
C11,C12,C13,C14,C16 : 100 nF
C15 : 1000 uF 35V
C18,C19 : 10 nF

IC1 : TDA 1524A
IC2 : LM 7812
P1 : 50k linear switch pot
P2,P3,P4 : 50k linear pot
X1,X2,X3,X4 : RCA jack
D1 : Diode 1N4004
L1 : Red LED

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KA2107 Tone control electronic circuit project

A very simple tone control electronic circuit project can be designed using the KA2107 integrated circuit manufactured by Samsung Electronics . This tone control electronic circuit project is very simple requiring few external electronic parts . As you can see in circuit diagram the KA2107 tone control circuit project is designed for stereo application and it has some additional functions like volume control and balance control between channels . Adjusting the 10k potentiometers (bass and tremble) you will modify the high and low output signal frequency .

This electronic circuit project must be powered from a simple 12 volt Dc power supply circuit , but it works fine also with a 8 volt or 14 volt DC power circuit .

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