What is lpf on amp. setup: - alpine 10 inch sub (swt-10s4.

What is lpf on amp. Feb 17, 2023 · If you don't know how to do HPF and LPF settings on head unit, we've covered the easy and reliable steps that can make you get the optimal quality. What Does LPF Mean? LPF simply means low pass filter, this is a common filter used all the time across music and music production, perhaps most notably on turntables. Hi Mar 3, 2012 · I believe most people set their LPF so low because it's often hard to get a wideband sub to have the exact spectral profile we desire. i have just recently read that the HPF should be set higher than the LPF (exm. The LPF or Low Pass Filter of an amplifier is the mechanism that allows all the frequencies coming out of a sound source to be distributed below the configured level. Basic Principles of Operation What do you think of my amplifier settings?Let me know in the comments. How to set up your low pass fille Nov 13, 2023 · Most people are asking how the LPF is affecting or improving the sound quality. Should I use this way and if so, what test tones should I use, 20hz and 50hz ? This is for my sub amp only and here is a picture of the settings on the amp. 5 component speaker. These filters exist in several forms and give the smoother type of a signal. The LPF diverts sound waves, distinguishing between frequencies and ensuring that only those below a selected cutoff frequency make it to the output. it has its seperate tweeter and crossover box (xs65c Jun 27, 2020 · 12) Sets the "playing field" that all other tone and eq adjustments work within and allows your bass amp tone control (s) to boost or Cut frequencies that your speaker can reproduce and matter most to your FOH tone. Leaving a gap in the crossover between you midbass and subwoofer allows you to play the subwoofer a little louder (which everyone does in a car audio environment) without boasting the crossover frequency. 4 - DD Audio ) There is no subwoofer for now. Jun 29, 2024 · A comprehensive guide on how to set the crossover frequency for the car audio system will give best sound quality you've been yearning for. The HU looks like it allows more Jul 13, 2023 · Can someone explain to me how to set HPF, and LPF settings, slope etc. c This video is dedicated to beginners that want to learn what all the knobs, switches and adjustments do on your amplifiers. The Low Pass Filter A simple passive RC Low Pass Filter or LPF, can be easily made by connecting together in series a single Resistor with a single Capacitor as shown below. 5 times what the sub can handle, that's a recipe for disaster. I was lookin for recommendations for amp settings on gain, subsonic, and lpf for optimal sound without exceeding my 1250 rms max on the sub. Essentially, when a subwoofer is set with an LPF, it's given a threshold - say, 80 Hz. May 26, 2022 · Assuming the crossover acts as a brick wall is a common mistake that makes it really difficult to integrate your speakers and subwoofers. In that case should LPF be set to 60hz? Will setting LPF to the enclosures actual freq range save power and reduce distortion and clipping? Thx Nov 16, 2010 · Im using a kenwood excellon x600 amp (100rmsx4) and a pioneer avh-4200dvd through two polk db 6501's in the front, rear speakers remain stock and amped by HU. By following the guidelines above, you should be able to perfectly set the LPF on your amp and make the most out of your sound system. Discover how LPF prevents distortion, protects speakers, enhances sound quality, and improves amplifier efficiency. com/?afmc= Aug 15, 2014 · First off, don't bump a topic less than a day old. In addition to the previously mentioned function May 25, 2024 · LPF is commonly used to remove unwanted high-frequency noise or to create a warmer sound by reducing high-frequency content. Click to expand Came here to say this. Just set the gain May 22, 2014 · LPF and HPF do not cut the frequenqy exactly off at 80hz it will have a slope that quiets the frequencies after or before 80hz depending on if your using the LPF or HPF So if your LPF is at 80hz you can set the slope to be -12 db or -24db these slopes will have an effect on the frequencies above 80hz to drop off faster. It will let frequencies above to pass as well on what's called a slope. Amp has both a HPF and LPF, each with a range of 30 - 100Hz (24db). I have the HPF on the amp itself turned off, but I set the one on the head unit to 63hz. Often, it is explicitly stated as the preferred Jul 10, 2023 · Not sure what settings to use for your low pass filter? Find out the right low pass crossover setting for great sounding bass in my subwoofer crossover guide. Whether you’re fine-tuning a car audio system or enhancing your home theater setup, the LPF is a fundamental tool for achieving the sound you desire. Jul 19, 2024 · Second Order Active LPF Circuit using Op-Amp Using an operational amplifier, it is possible to design filters with a wide range of gain levels and roll-off models. While ear-tuning can get you close, it’s inherently subjective and susceptible to environmental factors, listener fatigue, and individual hearing differences. That 50hz test tone tuning on a subwoofer amp is when you are tuning with a digital multimeter. Filter Design: Active low pass filters can be designed in What is LPF on AMP? 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. I also have one in the effects loop of my SWR SM-400s, and it stays with that amp. A subsonic filter will attenuate frequencies so low that your subwoofer cannot reproduce them OR that humans are incapable of hearing. Sep 21, 2023 · The Low Pass Filter (LPF) setting ensures that a subwoofer operates within its optimal range. I believe that is a adjustable knob for what frequency to boost. i have a question on this aswell, would i set the head unit and amp to the same lpf setting, for example 60hz for the sub? and if i just wanted the amp to do the filtering, should i set the headunit to thru? Jun 16, 2006 · > Car Audio Forum > Car Amplifiers Forum > Archive through June 26, 2006 Forum > What do I set my HPF and LPF filters to? Username: sign-up? Password: forgot? Apr 12, 2025 · Are you looking for a way to make your audio sound like you’re right there in the studio? Rev up your car's audio experience by effortlessly adjusting the low-pass filter on your subwoofer—just turn the dial or tweak the setting in your stereo's menu to only let those deep, ground-shaking bass tones through for the smoothest blend with your car's speakers! To make the process easier, I Lpf and subsonic Ok what i dont understand is lpf and subsonic. Nov 25, 2024 · Disable the crossover/LPF on the sub itself. This fundamental function makes it one of the most important components in signal processing and electronic design. This ensures that the subwoofer focuses solely on the deep bass tones it was In this tutorial we will look at the simplest type, a passive two component RC low pass filter. Ohh so the head unit > amp (in priority) right I can set the amp LPF close to the head unit just for a security (backup) im right ? Or turn off the head unit LPF and do it on the amp and make sure it safe ? Sep 25, 2014 · Hi there, I'm having difficulty of understanding whether I should set my 4 channel amp (powering 2 sets of 4" component speakers Morel and Helix (High ,mid no woofer with crossover) to High Pass or Full range and crossover frequency. Amplifier Settings Monoblock Amplifiers The settings below are common settings found on monoblock amplifiers. Conversely, low pass filters or LPF attenuate frequencies above a particular cutoff point and allow other lower frequency components to pass through almost unaltered. Sep 19, 2025 · Below we will show you how to successfully set an amplifier’s low pass filter: Step One: Find the LPF (low pass filter) Depending on the brand or model, the location of the low-pass filter varies between amplifiers. This filter provides a bandwidth response as well as unity gain. I have 4 channel amplifier and 6. At Genius Audio we would like to show you how it's done. Sep 14, 2023 · The low-pass filter, or LPF, on your amp, is a crucial setting that has an impact on the sound quality of your audio system. Oct 9, 2025 · Learn how to set LPF on your amplifier with our step-by-step guide. Tough to find that exact setting since the dial doesn’t have each Jun 23, 2025 · For many years, the standard approach to setting amplifier filters, including the LPF, involved relying solely on one’s ears. or maybe i just have it set up wrong and i dont know which settings to choose. It is important to check and adjust this setting periodically to ensure it is set correctly for the best performance from your amplifier. do you reccomend i get a small mono for the subs instead? the bass sounds terrible from my amp and not at all loud. In a trunk car with an inexperienced user and an amp that puts out 1. I don't know if I put to FULL or HPF. down4soundshop. It is the complement of a high-pass filter, which only passes signals above its cutoff frequency and attenuates all signals below it. I figure the head unit is overall the brain of the system compared to the amps and the speakers built in crossovers. It has nothing to do with the allocation of speaker-channel content between the speakers and the sub. If you like a slight hump below ~50Hz, for example -- and most people do -- then one of the easiest ways to attain that goal is to set your LPF somewhere in the vicinity of 50-70Hz and boost the gain a little bit. 5ohm 2 Kinetik 1400 Jun 21, 2021 · The LPF comes much later in the chain- I use the LPF either as an outboard tone knob, or to keep fuzz out of the house PA horns and tweeters (because I think fuzz sounds awful when not through anything but a speaker). Since Kicker Aug 23, 2022 · Hi all. Avoid the $300 blown speaker mistake with proper frequency settings and troubleshooting tips. Low Pass Filter (LPF) In its most basic explanation, the Low Pass Filter Sep 10, 2022 · Proper amplifier tuning plays a big role in your overall driving experience. LPF = crossover for subs HPF = crossover for mids/highs Set them to the desired crossover frequency for your application. Like say if you got some 4" highs, and they are rated for 500hz and up response then you Apr 27, 2022 · In this article we will explain what LPF, and its counter-function HPF, mean as well as some other common amp settings. and if I put to HPF what frequency is the best for 6. The Crossover Point The crossover point is defined as the frequency at which the responses of two filters, usually a HPF and a LPF, cross one another. My head unit has LPF/HPF settings and also allows me to adjust bands from 63Hz to 16kHz. Apr 8, 2007 · LPF = low pass filter HPF = high pass filter It means exactly what it sounds like. Here’s how you do it: Locate the filter control: Check the amplifier from all sides. The subsonic is the same, but opposite. Oct 26, 2023 · Understanding the LPF controls and functions empowers you to fine-tune your amplifier to meet your specific audio requirements and elevate your listening experience. Oct 16, 2025 · Learn how to set LPF on amplifier with our step-by-step guide. Just joined and have a newb question regarding how low pass filters work. One of the most important settings for a subwoofer is the cutoff frequency for the low-pass filter. • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Basic Mechanics The cutoff frequency sets the point May 14, 2020 · On a subwoofer amp you want to use a LPF (low pass filter) and set it to 80hz, meaning that every frequency 80hz and below will play/pass and no frequency over 80hz will play:pass. What is a crossover? What does LP and HP filter mean? •LPF (low pass filter): filters out higher frequencies; frequencies above set point will be rolled off to a degree depending on slope (6/12/18/24dB etc). Jun 29, 2024 · How to tune and adjust car amplifier? This article will guide you through improving the overall sound quality of your car audio system. Whichever lpf is lower or hpf is higher is what the speaker will get. As such, people commonly ask, “What frequency should I set my subwoofer low-pass filter to?” Jan 7, 2022 · was hoping to get some help tuning the amplifier that is powering the speakers. While every monoblock amplifier on the market may not have all of these settings on the same amplifier, it is important to understand the function of each setting to achieving the best settings for your build. May 4, 2023 · Here are some types of LPFs that you can use according to your requirements: Active Low Pass Filter: An active LPF boosts the desired frequencies while reducing the input signal of unwanted ones, creating a cleaner and clearer sound. Jul 10, 2023 · What is a low pass (LPF) or high pass (HPF) filter? High pass filter vs low pass filter differences A highpass filter (HPF) works to block unwanted frequencies in the audio signal output (low frequency sounds) below the crossover point from reaching a speaker. The purpose of an LPF is to remove or reduce unwanted high-frequency noise or distortion from an audio signal by preventing them from reaching the audio device. Or I can set the HPF and LPF at the amp. It may be inverting or non-inverting op-amp. what should i set these to? I show you how I set my subsonic level on my amp for you to learn also! ↘️Use Discount Code JACOBVIRAL at: https://www. A low-pass filter 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. Fortunately, with soundwaves, there’s no concern about excess water accumulation. ? I'm currently using the settings in the head unit for these instead of the amp's HPF and LPF's. can I ask something about frequency and LPF and HPF and Full. The filter is sometimes called a high-cut filter, or treble-cut filter in audio applications. Aug 12, 2025 · High pass filters or HPF attenuate frequencies below a particular cutoff point, allowing other higher frequencies to pass through almost unaltered. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. Jun 5, 2013 · im newbie. LPFs are commonly used in subwoofer amplifiers to What does LPF mean on an amp? Uncover the secrets of Low Pass Filters, optimize your car audio, and elevate your sound experience. Leave the LPF of LFE in the Denon at 120Hz. 5" midrange raw drive speaker. Before tuning, the filters on each amp have to be set as so, hpf or subsonic filter off or turned all the way down and lpf turned all the way up. A guideline to follow is that you should never set the LPF any higher than one-third of the available power output. This can be the crossover point of two filters in an electronic crossover, or the crossover point of two passive filters. Jun 13, 2015 · So, all i can really do for now is just turn the LPF on amp all the way to 250hz from the position its at now which is around 1pm. Aug 5, 2023 · I was watching a video on how to set the low/pass filters on an amp. Running Polk Audio components in front, coax in rear and a 10" JL sub. Aug 8, 2023 · What is LPF on an Amp? An LPF (Low Pass Filter) is a feature on an amplifier that allows only low-frequency signals to pass through it, whereas it blocks all the high-frequency sounds. 80hz on lpf and 100 on hpf) apparently this sounds better than having it set to 80hz on low pass and 80hz on high pass What is a Low Pass Filter? The definition of low pass filter or LPF is one kind of filter used to pass signals with low frequency as well as attenuate with high frequency than a preferred cut-off frequency. When setting the HPF and LPF filters yourself, you need to know about slope. The LPF on my amp for my sub is at 70 but the LPF on my radio is at 30, if I turn it up the bass gets louder. The LPF let's the low frequencies pass through, the HPF lets only the high frequencies pass through. If you add a LPF (low pass filter), depending on your style, you can tame the highs as well by cutting fret noise and finger scrapes. Every speaker has its own cutoff frequency, slope, and implementation. May 24, 2019 · What U guys like to set your low pass filter for subs , I’m at 80 is that to low should it be like 120. What is a low-pass filter used for? Low-pass filters have applications such as Oct 18, 2005 · the amp is a rodek r680a 6channel amp,and i got it basically as a space saver or all in one jobbie. To set your filters, you should refer to the frequency response specifications of the speakers or subwoofers you are powering with each channel of the amplifier. Jun 19, 2022 · Sorry for asking a noob question I have 2 sets of components both front and rear ( 165ES - Blam Audio ) And a 4 channel amplifier ( RL-SA300. Mar 6, 2015 · Read our Knowledge Base Article and learn exactly how to tune an amplifier. 5 raw drive speaker. Thus Aug 10, 2020 · The operation of a basic LPF (passive filter) circuit and low pass filter using Op-amp (active filter) is the same except that an op-amp is connected to an RC filter circuit. The first step is to set the dial on the amplifier in the middle of its range. ref. After you’ve set it, slowly fine-tune and listen to find the best sound. The sub is flat to 20hz (mfc spec) RCA Input signal Nov 15, 2024 · Question: should the LPF on mono amp be set generally to 80hz or lets say your enclosure only plays up to 60hz before a steep drop off. Jun 26, 2025 · Therefore, LPF setting on an amplifier is crucial to maximizing sound systems and enhancing sound quality. Everything above the crossover point will be allowed to pass. Setting your LP or LPF filter on your subwoofer amp is also an easy process. You may also see these settings on your amp and not really know what they do. Jul 2, 2009 · If both sub LPF and comps HPF were both set at 80hz there would be cancellation, especially with only an 18db LPF and 12db HPF. subs power acoustik 1200W gothic series amp what are these? HPF and LPF have a range from 40-250Hz and X-over can go to LPF, full, or HPL i have no idea what these do. Normal amplifier slopes are -12db per octave. Basic first-order passive RC filter We run through common amplifier terms with quick and easy methods of tuning gains, low and high pass filters, frequencies and bass boost. This is My amp allows for either a LPF, HPF, or full on the front/rear speakers. It’s a fundamental tool used in mixing, sound design, and synthesis to smooth out harshness or shape tonal balance. The low pass filter frequency response mainly depends on the Low pass filter design. My front The Phase Setting on an amplifier is important for balanced air pressure in your vehicle. the LPF is purely a preference setting and some like it higher while other like it lower. Manufacture list frequency from 30-200hz) currently set on LPF 80-100hz - alpine 2 way 6. You see builds all the time with both inverted and standard mount subs in the same space. And to answer your questions, Punch EQ is the same as bass boost. Bass management is being handled by the AVR. A low pass filter (LPF) is an electronic circuit designed to allow signals below a specific cutoff frequency to pass through while attenuating (reducing) signals above that frequency. What is LPF on an amplifier? LPF stands for Low-Pass Filter and is a feature found in many Nov 13, 2024 · I know I will need to play with these settings to get things dialed in for my specific room, but does anyone have advice for starting points for the LPF on the Marantz and Crossover Frequency on the Cambridge Sub? Given the specs of the LS50's? I'm running myself in mental circles trying to distinguish what the LPF on the amp accomplishes vs. > Car Audio Forum > Car Amplifiers Forum > Archive through January 16, 2010 Forum > What does lpf and hpf mean Username: sign-up? Password: forgot? Jan 23, 2024 · Hi All, New member, hoping to get some clarity on some baseline HPF & LPF settings for a new sub set up in my 2 ch system. In this article, we'll provide more detail on LPF and discuss how to set LPF on AMP. Aug 18, 2019 · Key learnings: Active Low Pass Filter Definition: An active low pass filter allows low-frequency signals to pass while blocking higher frequencies, essential for various electronic applications. It uses an amplifier to achieve this, resulting in improved filtering performance and reduced distortion. Set-Up: Passive sub with separate mono amplifier. 13) Helps you sit in the mix better because Oct 31, 2013 · As requested Hopefully helps a few of u guys setting crossovers and if u are running active. Component Significance: The use of an operational amplifier (Op-Amp) is critical for adjusting frequency response and enhancing signal quality. Any speaker is, in fact, also a filter. If it doesn't let you turn them off on the amp then set the lpf at highest and hpf at lowest on amp Aug 15, 2016 · I've got a Kenwood HU (DDX9903S) and an NVX900. The LPF should be set so low that you are not able to hear where the sub is. I can set the HPF, LPF and apparently the tweeter crossover all within the HU. The exact frequency response of the filter depends on the filter design. This is a deliberate filter, which can be compared to a finely woven sieve, expertly crafted to allow only the essential Jun 11, 2014 · The Amp's LPF can not be bypassed, so I'd see about setting the HU's LPF to through/off and using just the Amp's LPF. In other words, it is what facilitates the passage of low frequencies, eliminating high frequencies in a Car Audio system. And if your talking about Punch freq. •Subsonic: basically just a high pass filter (HPF); filters out frequencies below set point; also rolled off, not a wall where the frequencies just stop playing. For high-pass frequency filters (HPF), manufacturers frequently include specifications indicating the best cutoff frequency to use. This often leads to settings that are “good enough” but far from optimal, leaving a significant amount Oct 19, 2023 · Have you ever wondered what the low-pass filter (LPF) control on the back of your subwoofer actually does? Think of it like this: a wave of water that requires regulation. Adjust (raise or lower) the speaker-channel crossover settings if necessary (based on the specs of each speaker or speaker pair). The designers will Jan 6, 2019 · I recently bought a rp1500 mono amp and 12"evl sub. Conversely, HPF is often employed to eliminate low-frequency rumble or to achieve a cleaner sound by attenuating unwanted bass frequencies. If it is the punch freq or bass boost, don't use them. The LPF (low pass filter) will let frequencies lower than what is set to pass through the amplifier to be amplified. I have a Denon 2500H AV amp driving a full setup in my cinema room with B&W 801M (series 2) for the primary front pair along with additional Atmos front speakers and flat panels for surrounds and a Gale centre May 23, 2025 · Home › Glossary › Audio Effects & Signal Processing › Low-Pass Filter (LPF) How a Low-Pass Filter Works A low-pass filter (LPF) allows low frequencies to pass through while reducing the volume of higher frequencies. The calculation of circuit values for the response of a Butterworth low pass filter with unity gain is straightforward. Aug 30, 2022 · Alpine Car amplifier settings explained! I hope I explained these correctly! If you want to see more speaker/sound videos, check out the playlist below where. My setup:2 Massive Audio Hippo 15'sCrescendo BassClef 4k @ . Additionally, it enhances the audio listening experience by eliminating unwanted audio frequencies. The circuit diagram of the low pass filter using op-amp is shown below. Firstly i thought lpf was a filte to filter everything too high,lets say a sub with normally 40 hz,the lpf would cut it at 70-80 hz,but some people are talking about it not letting it get under 40. Likewise, a low pass filter (LPF) blocks high frequency sounds above the I show you how I setup my LPF Settings on my amp and head unit with a few options explained. Apr 27, 2023 · How to Set Subsonic Filter on Amp? You can only set the subsonic filter on the amp in some setups. should I just leave it at 30 or should I turn it up to 70 and check my gain with a multimeter? Jul 15, 2020 · Here In This Article one Can Go Through Overview Of What Is An Active Low Pass Filter, First And Second Order LPF, LPF Using Op-Amp And Other Applications Nov 27, 2012 · Even though this is an extreme case, I've had to set the subsonic on a friend's hifonics brutus 15 (very short throw sub in a very undersized prefab box with a terribly sized port). How would you manage it? You’d employ a dam to reduce its flow, transforming it from a powerful surge into a gentle stream. the Crossover setting on the sub. Includes frequency recommendations, troubleshooting tips, and multimeter tuning methods for perfect bass integration. 5 5 channel amp. Jan 1, 2001 · This tells the amp that those speakers can take sounds up to (or I guess down to) 80Hz with ALL frequencies below this going to the sub ? correct so far ? So what does the LPF of LFE tell the amp to do ? Also whats double bass ? Is that where you set speakers as full range but it also sends same frequancies to the sub ? Mar 28, 2025 · To explore the implications of using an LPF on an amplifier more deeply, one must first understand its operational mechanics. In modern amps, you can access it through a menu on a digital display. This article shows you how to tune an amplifier to achieve great sound! Active Low Pass Filter Uses Op-amps for Voltage Gain Active filters such as the Active Low Pass Filter circuit, are RC filter circuits that use along with some resistors and capacitors, an operational amplifier (op-amp) as the their main amplifying device to provide voltage gain as well as greater control and filter performance in the low frequency passband. Any sound frequencies above this threshold will be blocked, ensuring that only sounds below this cutoff frequency reach the subwoofer. Dec 23, 2005 · 2 12" 1240W inf. As I'm not a car audio expert, I don't seem to hear any differe Jun 22, 2022 · If your head unit has the ability to set crossovers use that, then you could set the LPF on the amp higher than that. Letting frequencies higher than what is set to pass through. It's easier to set it on the headunit on the fly so leave them off on the amp. A low-pass filter is the complement of a high Low-Pass Filter What is a Low-Pass Filter? Definition A low-pass filter (LPF) is a circuit that only passes signals below its cutoff frequency while attenuating all signals above it. ↘️Use Discount Code "JACOBVIRAL" at https://www. . Jan 31, 2024 · Have you been adjusting your amplifier settings and noticed a low pass filter knob or slider; and you are now wondering what a low pass filter is. Dec 27, 2020 · Tune your subwoofer amp on a -5db 40hz tone and your speaker amp on a -5db 1000hz tone. The purpose of the LPF is to manage or evade the high-frequency sound while only allowing the low-frequency sound to pass into the output speaker or subwoofer. Can someone give me an super easy to understand explenation? Thanks very much Sep 17, 2025 · Set LPF near where mains roll off; avoid overlap with HPF. This eliminates the distortion cases on the speakers, allowing speakers only to reproduce the high-quality sound within that specified frequency range. I think 100 on the amp will be a little low though it may interfere with the head unit crossover. So, when used properly, the low-pass frequency can elevate the audio track, ensuring every bass and beat resonates with clarity. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. If not it is just the LPF ( Low pass filter) and should be set where your HPF is on your doors. If you can hear where the sub is, it is likely because it is broken or the sound is distorted with a lot of high frequency noise. I like use to LPF 60hz at 24db and midbass crossover over at 70hz 24db. What should be the ideal X-Over ( frequency cutoff point ) if the amp is set to HPF? Or should I just Oct 3, 2011 · On many of the newer head units these days, if you scan through the audio settings you will see things like HP filter, LP filter and when you select them a few options for frequencies to select from. Crossovers & frequencies: Just something quick I wrote about the basics of crossover points & slopes: Let's start simple with crossover filters, high pass (HPF), low pass (LPF) and bandpass. Dec 10, 2023 · Learn about the definition, types, and applications of LPF on amps. A low pass filter is a device that is used to frequencies around the lower frequency range to your subwoofer. and tweeter. setup: - alpine 10 inch sub (swt-10s4. i have stock speakers and ~$100 jvc head unit if that matters. In this video I go into depth how to assist and tune your high pass filter HPF, low pass filter LPF, sub sonic filter SS, and how to create a bandpass filter What is the ideal crossover frequency for my door speakers?, should my HPF be set where my LPF ends?, for example if set my LPF for my subwoofers at 80hz then my HPF for my door speakers should be set at 80hz? If I set the LPF on the head unit what should my slope be?, my stereo can have a slope from 0 dB/oct to -24 dB/oct. Feb 13, 2023 · Car Audio High-Pass and Low-Pass Frequency Filters settings 70 to 80Hz is a general rule for a car stereo sub-low pass filter (LPF) setting. It may be a physical button or knob on the amplifier. In certain instances, you’ll need to consult the user manual to locate it. I don't know the frequency a low-pass filter is an electronic circuit that exhibits a specific frequency response characteristic: it passes frequencies below a certain point, known as the cutoff frequency (f_c), and attenuates frequencies above this point. jcwu ijx vo plic zg6llr 2udlbj2 wygg r0tvco zgkr u9lj