Car amplifiers with infrasonic filter

Infrasonic filter

— the presence in the design of the amplifier of a filter that “cuts off” the frequency output below the minimum threshold of audibility — the so-called infrasound. Such frequencies are not audible to the human ear, even if the frequency range of the speaker allows them to be reproduced, while they reduce power, lead to signal distortion, wear out the speaker cones and can even make you feel unwell. This feature will be especially useful if you plan to use an amplifier with a subwoofer — it is for bass acoustics that all the points described are most relevant. In some amplifiers with Finch, the filtering threshold is constant, in others it is possible to adjust it.