What is low-pass filter on a subwoofer?


There are several adjustments that are done for speakers and sub-woofers to work properly.When these adjustments are not properly done, they can create distortion that can sound like cracking, hissing, buzzing or whomping. These noises can intrude on the instruments and music.
low-pass filter on a subwooferOne of the devices that helps a subwoofer work properly is a low-pass filter. Low-pass filter prevents higher frequencies from reaching your sub-woofer. It’s an important device because sub-woofers have been designed to reproduce low-frequency bass tones.

Low-pass filters work effectively and are used when one wants to listen to soft music. For instance, music with lower frequencies from 80 to 100Hz on the low-pass crossover can be very great on a subwoofer. To get the best results, it is always advisable to disconnect all other amplifiers. Additionally, do not use the low-pass filters, bass boosts, crossovers and amplifier at the same time. It is advisable to only use one at a time and not both. The reason is that something called phase distortion generates around each filter or boosts crossover frequency, muddying up the sound.

low-pass filterProper adjustments on the low pass filter should cancel all the mid-frequencies and high-frequencies. Low-pass filter eliminates the notes you don’t want the sub-woofer to produce. It also filters vocals, cymbals, strings, guitars and any other instruments that are not bass or low drum type. In the case of any further muddy sounds, you should turn the filter down lower. 

Most speakers and amplifiers have low-pass and high-pass filters. These filters help you to moderate the various sounds. The high-pass filter enables all frequencies above the setting to pass through to your speakers while preventing lower bass notes. The best way to adjust your subwoofers is to listen as you adjust. This way, you will get rid of any bass or low drum kicks that might cause distortion in your subwoofers.