What Is PFM Subsonic Filter?

Is higher Hz better sound?

This measurement of cycles per second is expressed in Hertz (Hz), with a higher Hz representing higher frequency sound.

Low-frequency sounds are 500 Hz or lower while high-frequency waves are above 2000 Hz..

What is a good crossover frequency?

What is the recommended crossover frequency for a subwoofer? For THX Certified and non THX Certified home theater systems, 80 Hz is the recommended setting. However, you can set the crossover (LPF) between 80 Hz – 120 Hz based on which setting sounds best for your system.

How does a low pass filter work?

A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design.

What should LPF be set to?

As a general rule, the Low-Pass Filter should be set at a value approximately equal to (or below) 70% of your main speaker’s lowest frequency response. For example, your speaker’s frequency response goes down to 43Hz. 70% of 43Hz equals 30.1, so you should set the subwoofer’s low pass filter to 30Hz.

Is 40 Hz low enough?

below 40 hz? yes, quite necessary. below 30 is where it gets less important. 30-45ish would be what most would consider real subbass….you may not hear it with a standard computer speaker setup, but you roll off anything below 50, there will be something noticeably missing on the dancefloor.

What do I set my subsonic filter to?

Therefore, to get your subsonic filter setting, take your subwoofer’s tuned frequency and multiply it by 0.75. So, if it’s tuned to 40 Hz, set the filter knob to 30 Hz.

What Hz is best for bass?

20-120 HzA 20-120 Hz rating is best for bass in most subwoofers. The lower the Hz, the more is the bass you can get. Some of the best subwoofers in the market have this Hz range. If you are buying a subwoofer that has a fixed Hz rating, you should ensure it is lower than 80 Hz if the bass is important to you.

What does xover mean on AMP?

crossover frequencyAn abbreviation for crossover frequency, which refers to the specific frequency at which a crossover will divide the audio signal into separate frequency ranges.

What’s the difference between HPF and LPF?

There are two types of pass filters (Fig. 1). A high-pass filter (HPF) attenuates content below a cutoff frequency, allowing higher frequencies to pass through the filter. A low-pass filter (LPF) attenuates content above a cutoff frequency, allowing lower frequencies to pass through the filter.

What is the subsonic filter on a amp for?

As we discussed earlier in this article, subwoofer amps typically use LPF (low pass frequency) filters to block high frequencies that should be playing through your speakers. A subsonic filter will attenuate frequencies so low that your subwoofer cannot reproduce them OR that humans are incapable of hearing.

Do I need a subsonic filter?

Subsonic filters are good for keeping the wattage of the amp powering the frequencies you want powered, and not wasting power trying to reproduce very low frequencies. I cannot say that you NEED a filter, but it does somewhat depend on your music tastes.

How do you adjust subsonic?

Put on your favorite song and turn the volume up to your normal listening level. 4. Turn your Subsonic Filter down to 10Hz then slowly turn up the filter frequency until you hear it take effect on your sub bass. The Subsonic is now correctly set.

What Hz should a car subwoofer be set at?

Tips for Setting the Proper Crossover Frequency of a SubwooferIf you know your speaker’s frequency range, set the crossover point roughly 10 Hz above the lowest frequency your speakers can handle cleanly.The most common crossover frequency recommended (and the THX standard) is 80 Hz.The numbers below highlight general guidelines for speaker/subwoofer crossover frequencies.More items…

How do you adjust a low pass filter?

Turn the function on if you connect a subwoofer without the crossover frequency function.Select [Setup] – [Audio Settings] from the home menu.Select [Subwoofer Low Pass Filter].Select the setting you want. On: Always activates the low-pass filter with a cutoff frequency of 120 Hz.

What should I set my HPF and LPF to?

You usually set the HPF with a steep slope say 24db/octave because you are trying to protect the sub from damage and a 12-18db/octave on the LPF because you want it to kinda “blend” in with your mids. The steeper the slope (db/octave) the less your sub will creep into the neighboring frequencies.