You used to see the passive tone control circuit.
Pcb layout lm324 bass treble circuit diagram.
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This op amp ic has 4 operational amplifiers but in this circuit only 2 op amps are used.
This is bass treble tone control circuit diagram as ideas.
But this circuit is different its turbo bass or bass booster circuit using ic lm324.
Active tone control circuit using the transistors.
Now i want to suggest you this circuit has 2 forms are.
This circuit provides low pass filter of input audio which produces a low frequency of input and high frequency is blocked.
Multiple output bass booster using two op amp in one ic and include bass volume adjusting at 50k variable potentiometer.
Bass booster circuit diagram this bass booster circuit is made using the quad op amp ic lm324.
In the previous post i published improving performance bass amplifier the bass booster using ic op amp using or based on ic jrc4558 lf353 tl072 tl082.