Monday, September 05, 2016

Subwoofer controller uses a single IC TL072

Subwoofer controller uses a single IC TL072, one channel (U1A) is used as a mixer channel Left & Right and also as a buffer for the channel U1B so that the controller is not affected by impedance input that may vary in value, and other channels (U1B) is used as a controller.

In the mixer, the magnitude of the voltage gain of around 1x. Its value is taken from R3 / (R1 || R2), which is about 22k / (47k || 47k) = 0,936x. see circuit diagram

Subwoofer controller uses a single IC TL072 circuit diagram
In the controller, there is a maximum gain in the frequency of ~ 80Hz at 10dB. These frequencies are (80Hz) chosen for around 80Hz frequency is the beat / bass punch feels more. If strengthening Bass + 10dB is too high, replace the value of R5 with a lower so strengthening Bass its drops, for example, change it to 47k the gains fell to + 8dB. Capacitor C1 is used to cut frequencies below ~ 31Hz so did not join because it winds strengthened without audible to us, just waste - waste of power only.

Use this regulated power supply circuit for Subwoofer controller using IC TL072
power supply subwoofer controller

3 comments

  1. apakah ini bekerja seperti subwoofer filter 4558?
    sudah ditest belum?

    ReplyDelete
  2. SIR IWANT GOOD PROFEMENCE SUB PRE PLS SIR AND GIVE YOUR SUB PRE CIRCUIT

    ReplyDelete
  3. Oh this information is useful much.

    ReplyDelete

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