20Wpp Audio Amplifier with Bass


Posted on Feb 7, 2014

This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It uses the widespread NE5532 Dual IC but, obviously, its power output will be comprised in the 9. 5 - 11. 5W range, as the supply rails cannot exceed ±18V. As amplifiers of this kind are freque


20Wpp Audio Amplifier with Bass
Click here to download the full size of the above Circuit.

ntly used to drive small loudspeaker cabinets, the bass frequency range is rather sacrificed. Therefore a bass-boost control was inserted in the feedback loop of the amplifier, in order to overcome this problem without quality losses. The bass lift curve can reach a maximum of +16. 4dB @ 50Hz. In any case, even when the bass control is rotated fully counterclockwise, the amplifier frequency response shows a gentle raising curve: +0. 8dB @ 400Hz, +4. 7dB @ 100Hz and +6dB @ 50Hz (referred to 1KHz). A correct grounding is very important to eliminate hum and ground loops. Connect in the same point the ground sides of J1, P1, C2, C3 &C4. Connect C9 at the output ground.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Two channel frequency synthesizer
    General purpose preamplifier
    Speed-Control Switch Circuit
    TDA1013B - 4W Audio Amplifier Circuit
    LED Bike Light Circuit Project
    2 Transistor FM Voice Transmitter
    Instrumenting an Earth Satellite
    Servocore 2-motor walker circuit
    Touch Switch And Delay Circuit
    Gag Circuits



    Top