Audio loudness control

If your main amplifiers. But the sound is not clear as low treble and little bass. We offer an easy way. Using less equipment. You create a very simple

Audio loudness control circuit used to add bass. More during the normal listening levels.
It is a passive circuit and does not use the power supply.


When the input signal into. Switch S1 is an option to use open (ON) using loudness control. Off (OFF) to use a bypass. When the switch S1 to the ON position the signal will flow through C1(0.001uF), C2(0.01uF) and R1(2K). This will serve as a low pass filter circuit.VR1 is adjusted by the strength of the signal to the output.VR1-100K Linear Potentiometer, which uses the volume type with a central bar (Center Tap) only. The output of the circuit will be connected to the region to pre-tone next step.

Note: All capacitors use Ceramic Capacitor or Mylar Capacitor them low cost


How to build
This circuit has a few components so you can builds easily as Figure 2 make PCB layout and putting all components on PCB and connecting to your audio system.

Figure 2 The PCB and components layout of this projects.

Related Posts


I always try to make Electronics Learning Easy.


  1. richard

    Hello, How can I buy some of your pc boards?

  2. Les

    Do you sell these in Kit form or sell the PC boards?

  3. Ad

    Hi there, what is the potentiometer with a centralmtap.?
    Does it have 4 connections per channel.?
    I only know potmeters with 3 connections…

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.