Set the LPF at 60-80 Hz. Put on your favorite song and turn the volume up to your normal listening level. Show more Show If your components will play lower efficiently then you can go lower than 80. For the crossover. Mhycoal 3 yr. ago You should stick to sealed without a subsonic unless you have a DSP that can apply a Hpf to the signal They're right- the answer is No. We recommend you try the factory setting first. I learn something new everyday, I'm glad I asked this question because otherwise I would have never know how to actually set the ssf and whether to use it or not. If you have an amplifier, preamplifier, subwoofer, or any other unit with a subsonic filter, and you want to use it in a way that wont destroy it prematurely, you need to know what your subsonic filter is and how to adjust it. I was told 25-30 Hz but I am not totally sure. Any help on this is greately appreciated. Use a browser on any computer to play music and movies. 2-way speaker systems. This feature comes in handy when you have several subwoofers in the setup and want to combine them on a single output from your source so that they have the same delay. Thats where all the bone-shaking, window-rattling fun is! Webfactory setting will suit you fine. You are using an out of date browser. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. WebInstall the Subsonic server app where you keep your media. Let the user decide what sounds best to them. My Sansui integrated had a "subsonic filter" which was labeled 14Hz, so I am used to calling it subsonic (and the OP called it a subsonic filter in the title). and I have a light on my amp that turns red when clipping and if that happens I turn the gain down. In off mode the amplifier has an noooooo wayyyy. this has never been discussed on this forum ever. some good info for those who dont know i guess and who cant search. Setting your subsonic filter correctly eliminates the excursion demands on the subwoofer (s) below tuning and could provide you with years more service from your system. Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19. Copy Comment URL. (Optional) Get an app for your phone. When I flipped the switch I could rarely see them move much at all. December 2012 Now, it gets a little more complicated. The hertz scale is logarithmic. For a better experience, please enable JavaScript in your browser before proceeding. If youre a true bass-head, you might be incensed at the idea that youd want to cut out subsonic frequencies. The sweet spot for getting some pounding bass without destroying your subwoofer is between 25 Hz and 35 Hz. (anthem arc) But I think I can only set the high pass as low as 20hz thus loosing anything below that.. Because of the 50db gain high output MC setting, the dial on the front for variable resistance loading is disabled and it defaults to 47Kohm, which is fine for the Denon. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Learn more. It also has a balance control knob which is uncommon for a phono preamp. WebSecondly, a 30Hz tune would put a rule-of-thumb subsonic setting of 22.5Hz. WebBasically, with the subsonic off, play a 27 Hz test tone, measure the AC output voltage, multiply that number by .707, and then turn the knob up until the voltage hits that target. Webedited December 2003. June 2014 Tony. I rarely touch sub levels. February 2012, All The best thing to do is listen. What Is a Subsonic Filter & Why Should You Care? Now when I use my subsonic filter my sub moves much less but!It's been 1 year I'm debating if I should use this filter because Im pretty sure my system sounds better with the filter off. 07-25-2005 at 10:34am. Very common crossover frequency. The beat way is to do exactly what you are doing. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIYs, product reviews, accessories, classifieds, and more! May 2012 Setting the record level . I have a totally restored Nikko Alpha II amp and a Nikko Beta 20 Pre Amp. Phase adjusting above will shift somewhat with frequency. These cookies do not store any personal information. I restore older LPs with Audacity, ClickRepair, and my Mitsubishi LT-22 with an AudioTechnica cartridge. (are you certain the box is tuned to 30 hz?). Wouldnt a sealed box INCREASE the power handling??? March 2012 Magnepan, A SUBSONIC FILTER ISHIGHLY RECOMMENDEDIF YOU SPIN VINYL, USE PORTED SPEAKERS, AND WANT THE VERYBEST PERFORMANCE FROM YOUR ANALOG FRONT-END. It decreases the amplitude of those low notes you feel more than you hear. Most all multichannel receivers have bass management. The phase shift is neglegible. An electric arc lighter uses high voltage, I recently picked up a couple of microwave motion sensor radar modules. Bass boost source: boobland.club Bass boost increases the volume at a certain frequency, usually at 40-45 Hz. You set it just under where the mid bass speakers pick up. Set it and listen. You'll find everything you want to know about car audio and get installation help, tips and great deals on your car stereo projects. Feb 26, 2011. All of HPF settings will very on how good your subs suspension is, some can play a mean free air and some will bump the backplate, lol. WebGain setting Buttons marked with and set gain of the amplifier. Subsonic Filter Selectable subsonic filter settings, that will filter away the deepest frequencies. September 2014 As for the subsonic filter, Ive tried both settings and cant hear a difference. Were here to help. You also have the option to opt-out of these cookies. Agree, I see it as over kill,beyond overkill.. and then there is the ON or OFF filter that many amps have..say, set at 28hz(Non adju January 2023 If 30hz seems too low, you can bring it up some. Analytical cookies are used to understand how visitors interact with the website. Turn your Subsonic Filter down to 10Hz As only frequencies Pete has been working in the trades since high school, where he first developed a passion for woodworking. October 2014 So you want to delay the signal to the closest subwoofer by 1 meter (1 / 343 * 1000 = 2,915 ms). It has a cutoff frequency of 18 Hz. Thanks for your advise on this topic. So, if you already set the subsonic filter frequency to 20Hz, then setting the slope to 12dB/Oct will ensure that the signal has 12dB lower output at one octave under 20Hz (one octave below 20Hz is 10Hz). I have mine inside of my phono stage which is a project audio tubebox ds. December 2014 Technical specifications Pro-Ject Tube Box S2 The difference in distance in this example is 1 meter. Where you set your SSF will be somewhat dependant on how much power you are running, how large your enclosure is, and how much Xmax your driver has. Thanks for the replys. Check the level of each sub independently by turning off all of the other subs not under test. A ported sub can safely play about half an octave below its tuned frequency before theres a risk of damage. Keep an eye on the subs to make sure they aren't bottoming out a d just keep playing with it until you find a setting you like best. its an older pioneer AVR and yes it has a room eq setup feature with a mic. September 2015 Low subsonic frequencies, especially 20 Hz and below, damage the structure, so we want to attenuate them as much as we can. Thanks for the responses, I guess I'll continue doing it by ear then. If it's sealed, turn the subsonic all the way down to 20. In your case your filter goes to 35 so that's what you use. Regrettably, the motor is running at a constant", "What changes are required in order to feed audio instead of microphone", "Author's Note: More information about the AZDM01 turbidity sensor used in this project can be found", "i looked at some of the circuits at this site and found them to be The best thing to do is have the sub have a range of frequency response curves to choose from, like SVS's Ultra subs or Hsu's subs. Edit. Sign up to newsletter and stay in touch with us, Copyright 2015-2023 Arendal Sound - All rights reserved. In other words, its what we know as a high-pass filter: a filter that lets through signals above a certain Hz threshold and attenuates any signal below that threshold. September 2013 Selectable from 12 Hz to 31 Hz. If yes, you have a sealed enclosure. Meters / Speed of sound (343 m/s in room temperature) * 1000 = time in ms. #4. you don't need to run a subsonic filter, if you tune your box correctly. I don't know what to say..to me 10Hz IS subsonic. I'd love to", "I2C is a multi-address bus man. Not a 3" round port. In other words, its what we know as a high-pass filter: a filter that lets through signals above a certain Hz threshold and attenuates any signal below that threshold. But now have a new car, this will take a while to figure out. I think this is a large generalization as every install(box, subs, power level, design, vehicle, etc) is different. It's one of those "rule of thum The Subsonic filter slope means at which rate the frequencies should be tapering off, from the frequency point chosen. Yet its not a topic amp owners can blow off. I got a couple of anticollision car door warning lights! No band-aid, a subsonic filter is essential if you're using a good subwoofer -- or your main speakers extend really low -- and you're trying to play vinyl. However, you might be the kind of audiophile whos more into hard numbers, or you may want a hint on where to start. According to the description, it, While learning about different types of vibration sensors for condition monitoring, I came across a cheap piezoelectric shock/tap/vibration, What is the point of reviewing a cheap timer module, especially if it is based on the ubiquitous, The Raspberry Pi Pico W is a microcontroller development platform that combines the RP2040 with a Wi-Fi controller, Wireless battery charging is showing up everywhere. Home Trials It has a cutoff frequency of 18 Hz. # New armtube incorporating bi-metalic technology to reduce resonance and increase rigidity. Set it and listen. I listen to vinyl on a Technics 1710 turntable. Just make sure to set the xover on the deck before you turn the xover on the amp to the highest Hz. WebSetting subsonic filter Tech Support I have a 12-in ported subwoofer box, the box is tuned to 31.7. That will be a pretty boomy system. 4. Receive exclusive offers and promotions. Or is there at least a subsonic limit to the LFE channel bandwidth? Doesn't sound like it if you are constantly adjusting. Technical & Advanced Car Audio Discussion. Fascinated by all sort of tools, Pete loves reading and writing about all the latest gadgets and accessories that hit the market. As a result power handling decreases dramatically and excursion is uncontrolled which could result in damage to the driver, specifically physical damage as a result of over excursion at even modest power levels. What is this? May 2016 It's at 20hz. In off mode the amplifier has an internal subsonic filter at 10 Hz to prevent instabilities in the power supply. What would you do with a Qi wireless charger? Yes, every single recording is different, but adjusting to each film should still not be necessary (I agree that it isn't perfect all the time). This website uses cookies to improve your experience while you navigate through the website. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. We recommend leaving the phase at 0 degrees when using an AV-Receiver/Processor with time alignment (speaker distance) feature. You can also buy, sell, or trade your car audio gear with other forum members in our popular classifieds. I cant find the SL100B Transistor, February 2016 But if youre a fan of the ones that do (and you know if you are), you need a subsonic filter to keep your subwoofers from rattling themselves to bits before their time. I just finished up with the rebuild of my system (see sig) last weekend and when I was setting the dials on my sub amp before powering it up I set my subsonic filter to what I thought was around 20Hz. April 2014 It's not at all clear to me what you are talking about? Great information! Would be great to get this added as a sticky or added to a sticky for those who do not search and to have the information more r I also have a vintage McIntosh 2200 amplifier which is a 20hz to 20kHz amp. I have a few test LPS and when I put it on the silent groove test I can see that my 15 inch (JBL L300 Moniters) sub moves a little with my amp which is a little weird cause my amp is supposed to cut at 20hz. Feature highlights. Ill have to try and find something with a bit of a warp or wobble Cinema Room: LG 77" C1 | Xbox Series X | Zidoo Z1000 Pro | ATV 4K | Denon X4700H running Monitor Audio Silver fronts and rears, SVS PB-1000 Pro sub and Cambridge Audio Minx Min 22 There are many DIY sub builders on the forum and they sometimes install a subsonic filter before the amplifier if they want to cut out certain low frequencies from the driver. As a very general rule of thumb, I usually set an infrasonic filter 1/3 octave below tuning frequency. Great advice with the test tone. Originally a subsonic filter was designed to catch recording errors and frequencies below 20hz hence "subsonic" that could possibly damage your subs. Bowers & Wilkins LCR 60 S3 Speaker with Kevlar woofers. March 2014 For a better experience, please enable JavaScript in your browser before proceeding. 3.5kHz high pass (tweeter) & 250-500Hz high pass (midrange) Subwoofer subsonic filter. My friend always says never use equilisers or add something in the chain of audio. bad contacts- main source of miracles in electricity. My sub with my port had 111db at 15Hz and 116 at 20Hz. The short answer to your question is no. That's the simple answer. The low pass can start anywhere above the low pass frequency of the Example: 2 subwoofers in the same room, one subwoofer is placed 4 meters away from the listening position, and the other is placed 3 meters away. and I guess I don't run my sub hard enough because on "bass I love you" which goes down to 10hz I believe it doesn't move that much more than at 20hz. For the crossover. You must log in or register to reply here. However, you may visit "Cookie Settings" to provide a controlled consent. The proper way to level match your subs is to use the internal pink noise generator of your processor and an SPL meter set for slow response "C-weighted". March 2022 a power requirement! Verify the level equidistant for each sub. For visual learners, the video below illustrates how low frequencies can distort a subwoofers cone alignment without a filter. February 2013 The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. A forum for all things Trailblazer SS including mileage, horsepower, transmissions, interior mods, tires and more! A collision, Turbidity is considered a good measure of the quality of water as it is a measurement of how. The subsonic filter is a High Pass crossover. How do you adjust a subsonic filter? 11. April 2013 Weve already mentioned that the main mechanic these subsonic filters use is attenuation. Since this is fairly limited to an artifact associated with vinyl playback, is there any value to having this setting On while listening to digital playback? Of course, can always adjust for an anomaly track. CarAudio.com is the oldest and largest car audio forum community, since 2000. If you're looking for extreme protection of the sub, then the higher slope (24) is better. For Home Cinema use, where an AVR is used we recommend LPF Bypass On. It may not display this or other websites correctly. Check out the MTX Audio THUNDER1000.1 Thunder Series Car Amplifier for a great amp with a subsonic filter. That means the safest setting for its subsonic filter is half an octave below whatever frequency the port is tuned to. I notice when I play a certain easy-listening RCA Living Stereo album that my woofers are doing a huge dance, moving in and out like crazy, where there is no real bass in the song being played. October 2020 May 2015 So it's so hard to tell if it's better. 2. For example, If your subsonic filter is set to 40 Hz, 30 Hz notes will still get through but will be much quieter. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 0 comments 100% Upvoted Log in or sign up to leave a comment Log In Sign Up Sort by: best no comments yet Be the first to share what you think! With my IB subs I run 15Hz SS, it hits 20 just fine but I do have to EQ it up with these subs. that goes for both sealed and vented. The proper way to level match your subs is to use the internal pink noise generator of your processor and an SPL meter set for slow response "C-weighted". For the LP I would play with that crossover a little, most think that the you should just set it to 80 Hz and leave it. For a better experience, please enable JavaScript in your browser before proceeding. June 2017 I wasn't able to find frequency response specs for these, but starting your low pass filter at 80hz is a good place to start. Doing this will enable you to October 2013 All contents are Copyright 2023 by AspenCore, Inc. All Rights Reserved. Usually you want the high pass filter of your components set to the same frequency as you low pass filter of your subwoofer to eliminate phasing caused by the multiple drivers attempting to recreate the same frequencies Ok so 30hz on the subsonic and then on the LP filter start at 80. I flipped it on and off multiple times just to confirm my observations. It filters out very low frequency content that can potentially send your subs to the moon. A subsonic filter will introduce phase shift at audio bandwidth frequencies, but I'm never sure which is worse; the phase shift at low frequencies that might not exist on For stereo users you may leave this setting Off, so you can adjust the Low Pass Filter under the next step. A forum community dedicated to all mobile audio enthusiasts. The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. This feature inverts the signal, which means the same as 180 degrees phase, however, this is true 180 degrees at all frequencies. Below tuning the enclosure "unloads" the pressure in the enclosure and it no longer acts as a spring. If you dont like to crank your volume up that far, you might never notice any difference in subsonic sounds. basically, if you tune the box higher, and/or you will gain some spl, but excursion increases below the roll-off. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. Thank you for this Charles! Your one stop shop for all Trailblazer Suspension/Wheels. Then adjust it back up until the bass notes tighten up again. Electrodynamic "On a long enough timeline, the survival rate of everyone drops to zero." This helps avoid bad distortion since they cant handle deep bass. Come join the discussion about capacitors, amplifiers, subwoofers, marine and automotive audio, troubleshooting, and more! Others have adjusted theirs at multiple volumes and havent noticed any difference. April 2012 The Low Pass Frequency is adjustable from 30 Hz to 160 Hz in 1 Hz increments. It's not always necessary but it really depends on the enclosure, subs, power, and what you listen to. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Verify the level equidistant for each sub. so if the bass is up too high it drowns out everything else. Necessary cookies are absolutely essential for the website to function properly. Massive output to 18hz ported vs output down to 10hz sealed but not as much output at 18hz and above. What I wanted to say is that amps sound the same. I also always keep my Bass and Treble to 12:00 -Off. I tend to spend more time up front getting it where I think it is good, by testing like you do, with a variety of music and movies and adjust for probably a few weeks until I get something that suits my needs. If it's a ported box, set the subsonic about 5hZ below the tuning frequency. The current consumption is aound 5 mA. Right you will have to port it lower, watch the excursion on low notes. Within that band, itll vary depending on your chosen music and the rest of your setup. July 2012 It is very important that the capacitors C1, C2, C4, C5 and C7 are of exactly the same values in both channels. I understand that high end gear might contain a subsonic filter option etc.. The Fora platform includes forum software by XenForo. This eliminates the bizarre subsonic sine wave almost all LPs have. Explaining that is beyond the scope of this Q&A, but if youre just now learning, you should tune your subs, and this video is a great explainer. WebSetting computer to higher frequency (352,8kHz or 384kHz) deactivate S/PDIF Out and allows to record in DSD128 format. I actually go into the movie if its an action movie and set the bass to match some explosions and then watch the movie so I don't have to change it during the movie. August 2013 Hey everyone, Been a long time since I ran some sweeps of the system, last time was to check the seat to seat uniformity I achieved with multiple subs. I have a sine sweep but have nothing to record the frequencty response and no eq either. August 2020 I'm actually very happy with it! This category only includes cookies that ensures basic functionalities and security features of the website. Selectable subsonic filter settings, that will filter away the deepest frequencies. "Maybe you could further investigate programming this module through its serial port. Subsonic . 3 modes for sealed subwoofers, 6 modes for vented subwoofers as they can be used in vented or sealed mode. But on low to midrange stuff like the Yamaha RX-V667, is there a subsonic filter on the sub output? JavaScript is disabled. This filter has a very sharp cutoff character. So if you have a SUBwoofer in your So if im tuned to 33hz, I set my SF to 25hz? Great info by the way!! You can select the So the question is. This power and flexibility is accessible via PC-GUI software and our innovative single-knob LCD control panel. Selectable from 12 Hz to 31 Hz. The blue LED above the button is illuminated when its on. That could help explain the disparity. 3-way speaker systems. Is using the subsonic filter a must? Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. October 2015 Web20 Hz subsonic filter. . February 2015 | House Grail Hook up all four readers to the bus, and "talk" to the", "Update: I just found a great post that also explains more about the pressure sensor used in this", "Hey Dear:- December 2017 I remember watching my woofers move in and out (large excursions) without making a sound. Right, or play tones lower and lower and when it unloads I feel like with it on it gives a little less clarity and affects the highs a little less air,space. It is easy to set all you need are test tones and a multi-meter. As the founder of House Grail, Pete's primary goal is to help consumers make educated decisions about DIY projects at home, in the garage, and in the garden. Hi I first like to say great article you wrote! Learn more OK, I'm convinced Show me the demo first Especially on some ported subs. 1,773 posts. WebEasy way is to leave everything hooked up, subsonic OFF, volume low, play deep bass like 28hz sine wave, turn volume up, as woofers start moving too much turn the subsonic The value you filter against needs to be the Property Name, not the database column name. The sub moves just a little at times and that when I put the system at MAX. This filter has a very sharp cutoff character. Think of the filter as a slope, not an on-off switch., Subsonic Filters are particularly important if you spin vinyl records as they can have possible warping that causes a phenomenon known as woofer pumping. Instead, the number you set the filter to represents the frequency at which it starts to reduce the intensity of the sound. of no electrical". August 2014 Check the level of each sub independently by turning off all of the other subs not under test. LPF covers the top end. Most amplifiers have a 12 dB crossover slope on the LPF, so if you set the LPF higher, you will get punchy bass and it will hit very hard, but if you keep it at 60-80 Hz you will get smoother lower more pleasant bass. The Fora platform includes forum software by XenForo. November 2018 when using subs in a vented box, you do want a subsonic filter, otherwise the subs will try to reproduce frequencies below the ports' tuned frequency, which is often 35-45Hz, and well above the lowest frequency the subs can hit (particularly since boxes are usually tuned Piezoelectric Sensory Switch Module An Afterthought, Updated 555 Timer Relay Module A Quick Analysis. # Low friction, completely stable dual pivot bearing design for vertical movement. Not even close! (To learn more about frequencies and how they work, check out our Beginners Guide to Frequency Ranges.). The only thing you do need to know before we move on is that attenuation doesnt completely dampen sounds of a certain frequency. March 2017 The next step is knowing how to make your high-pass filter work for you. geolemon. While filtering is important, this isnt necessarily a dealbreaker; it all depends on what kind of music you listen to. It may not display this or other websites correctly. In connecting the subsonic fiter, remove the decoupling capacitor from the end module to avoid distorting the signal. it will attempt to quieten the notes that are below that frequency. I'm down at 60 Hz and found that with the music that I listen to it sounds much better. But not subsonic filter option. I'm writing to you to tell you about my experience with my subsonic filter. It is adjustable 6dB/Oct or 12dB/Oct. June 2013 Our Q&A covers all the big questions you might have about subsonic filters. Most subs have a filter built into the plate amp to protect the driver from damage from super low frequencies that it can't produce. OK, so if the port tuning frequency is 40Hz then your subsonic should be set to 40Hz which is pretty high. If not, its ported. You are correct in the presumption that subsonic filters provide a level of protection from over excursion. You might try this: lCol = objNavigation.Where You are using an out of date browser. That one takes some listening to get dialed in. Subsonic covers the low end and will be set according to the subs enclosure. It can help your amp save power when the bass gets real low. # Highest grade materials used throughout. Selected value is indicated by LED. Ideal power. December 2021 They have adjustable crossovers that can be selected for various speakers. Set the subsonic filter at about Fs or about 15% below the port tuning frequency (FO) whichever is higher. Featured Image Credit: slightly_different, Pixabay, What do you get when you pit one top-tier blender against another? (frequency always indicated by corresponding LEDs). So, if its tuned to 40 Hz, set the filter knob to 30 Hz. November 2013 Since you are tuned to 35hz, you can set the filter around 30hz to 35hz. could you suggest me an equivalent", "I found a lot of circuits that are very similar to this one and constructed one but for some reason", "hi can you pls mail me your pcb layout ,", "I have tried the same circuit for my AC motor. You could get a minidsp if you don't want to buy a new amp. If either of those is true, read on, and well get just a little bit into the weeds. If you pay attention, you will find that when it comes, The intelligent induction lamp is a cheap indoor motion sensor nightlight that comes in handy so you do, This post covers a few things about rechargeable electric arc lighters. Adjustable from 0 to 50ms in 0.25ms increments. WebThe subsonic filter is used to protect your subwoofer from damage due to playing low and loud. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. If it's ported you set it 1/2 octave below the boxes tuning. By clicking Accept All, you consent to the use of ALL the cookies. Not only will your low-frequency sound be less distorted, but your expensive subs will also last much longer. I have since added some more absorption to help counter a 60Hz suckout, (fiberglass batts under some end-tables) but nothing else.