Schematic & Wiring Diagram

Here is the circuit diagram of a simple subwoofer filter that can be operated from a 12V DC supply. This circuit is very useful in car subwoofer applications. The circuit is simply a low pass filter whose pass frequency can be adjusted between 60 and 160 Hz.

The circuit is designed around the dual TL072 IC BIFET. Outside the two operational amplifiers in the chip, IC1A is connected as a buffer. The audio inputs left and right after the mixture is fed to the input of the switch S1 IC1A with bipolar. Switch S1 is the phase control switch that can be used to make the subwoofer in phase with the other speakers. When S1 is in position 2, 180 degrees of phase change induced.POT R7 can be used to control the level. IC1B a low pass filter whose pass frequency can be controlled by adjusting the dual band POT R13.

Car Stereo Booster using IC LM2896 Circuit Diagram

This car stereo booster uses an LM2896 IC which has two chip amplifiers. It can be powered with voltages up to 15 volts. The ability achievement is 2.5 watts per approach with an 8 Ω amount and accumulation voltage of 12 volts. Using the arch tehnique in the ambit gives a ability achievement of 9 watts.

The car audio booster can be powered up from 3 up to 15 volts. The amount impedance that can be affiliated at its achievement can be either 4 Ω or 8 Ω. The accumulation voltage and the amount impedance access the achievement ability level. This amplifier ambit is advised as a booster for auto radio/cassette players. The accepted burning by best ability achievement and a 4 Ω amount is 1 ampere.