![]() The subsonic filter on an amplifier is used to attenuate frequencies below a certain threshold. What is the subsonic filter on a amp for? Once connected and powered up, the filter should help reduce out-of-band interference as well as noise and distortion. The filter will need to be installed into your setup and connected between the source and load. Once you have determined the type of filter, the frequencies that should be filtered, and the power rating, you are ready to set up the subsonic filter. This can be determined by determining the power at the highest frequency that will be induced through the filter and selecting a filter with a power rating that is higher than that. Similarly, if you are trying to reduce noise or distortion, the cutoff frequency should be slightly above the highest frequency of the noise or distortion.įinally, you will need to select the correct power rating for the subsonic filter. ![]() If you are looking to reduce out-of-band interference, you will want to select a cutoff frequency that is slightly lower than the lowest frequency of the interfering signal. Next, you will need to determine the frequencies that need to be filtered. High-pass filters will allow frequencies above a pre-determined cutoff frequency to pass, while lower frequencies are blocked. Low-pass filters will allow frequencies below a pre-determined cutoff frequency to pass, while higher frequencies are blocked.īand-pass filters will allow frequencies within a specific range to be passed, while frequencies outside of the specified range are blocked. ![]() Setting up a subsonic filter requires you to determine the type of filter being used, the frequencies that need to be filtered, and the power rating.įirst, you will need to determine the type of subsonic filter to be used, such as low-pass, band-pass, or high-pass. ![]()
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