24 Watt Subwoofer Amplifier

Thursday, March 11th, 2021 - Audio

24 watt subwoofer amplifier circuit was built using a prepared ICTDA1516BQ BTL and to the low pass filter on subwoofer amplifier uses TL072 OP-Amp. Signal level will be strengthened by the subwoofer amplifier is governed by the P1 and setting the center frequency of low pass filter can be set from the potentiometer P2. The function of SW1 on the subwoofer amplifier circuit is to select a phase, that is like behind phasenya or not. 24 watt subwoofer amplifier circuit requires +14.5 VDC supply voltage. The complete series can be seen in the following series of pictures.

Circuit of 24 Watt Subwoofer Amplifier

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Part List Subwoofer 24 Watt Amplifier

  • P1 10K
  • P2 22K
  • R1, R4 1K
  • R2, R3, R5, R6 10K
  • R7, R8 100K
  • R9, R10, R13 47K
  • R11, R12 15K
  • R14, R15, R17 47K
  • R16 6K8
  • R18 1K5
  • C1, C2, C3, C6 25V 4μ7
  • C4, C5 68nF
  • C7 33nF
  • C8, C9 220μF 25V
  • C10 470nF 63V
  • C11 100nF 63V
  • C12 2200μF 25V
  • D1 LED
  • Q1, Q2 BC547 should
  • IC1 TL072
  • IC2 TDA1516BQ
  • SW1 DPDT
  • SW2 SPST
  • 4 Ohm spkr

Subwoofer amplifer circuit is quite simple and often used in car subwofer amplifier with low power. 24 watt subwoofer amplifier circuit is also often used to make active speakers for the computer.

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