Low Noise Subwoofer Power Amplifier Circuit by TDA8561Q IC

Low Noise Subwoofer Power Amplifier

Low Noise Power Amplifier Circuit for subwoofer This circuit recommended audio systems of cars and home theater technology for low noise and high base requirements. The power amplifier used is an integrated class-B output amplifier. It contains 4×12W single-ended (SE) or 2×24W bridge-tied load (BTL) amplifiers. The output speaker is connected in BTL configuration in this system for better quality.


Subwoofer Power Amplifier Circuit by TDA8561Q IC

The above circuit components are same as given in circuit diagram of power amplifier circuit and ratings also same. Low-noise JFET-input operational amplifiers TL072 (IC1), car radio power amplifier TDA8561Q (IC2) and transistors BC547 (T1 and T2). IC2 has two 24W BTL output channels, one of which is connected to loudspeaker LS1. BTL is an output configuration for audio amplifiers, a form of impedance bridging where two channels of a stereo amplifier are fed the same audio signal.

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