With my IB subs I run 15Hz SS, it hits 20 just fine but I do have to EQ it up with these subs. March 2015 My avr has very advanced room correction. Do it in the avr when I do, but it's rare I need more (or less). Cheers! Show more Show October 2015 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. November 2013 August 2014 So in this case the closest setting will be 3ms. You are correct in the presumption that subsonic filters provide a level of protection from over excursion. What vehicle is this? If youre a true bass-head, you might be incensed at the idea that youd want to cut out subsonic frequencies. In off mode the amplifier has an JavaScript is disabled. A good point to set it is 25hz. The best thing to do is listen. For the crossover. When you buy via links on our site, we may earn an affiliate commission at no cost to you. February 2016 Update Privacy Preferences It is easy to set all you need are test tones and a multi-meter. This morning, I looked at my setting on the pre amp and saw a lever for On Off "Subsonic Fil". I'm writing to you to tell you about my experience with my subsonic filter. A subsonic filter is a component on your subwoofer that reduces the intensity of notes which come through at lower frequencies. Frequencies blow 10 Hz are attenuated by more than 35 dB. It decreases the amplitude of those low notes that you feel more than you hear. A collision, Turbidity is considered a good measure of the quality of water as it is a measurement of how. Bowers & Wilkins LCR 60 S3 Speaker with Kevlar woofers. You can do all of this from your deck too. I keep them off if in a sealed 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. 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. So you want to delay the signal to the closest subwoofer by 1 meter (1 / 343 * 1000 = 2,915 ms). Analytical cookies are used to understand how visitors interact with the website. April 2013 that goes for both sealed and vented. My remaining question is should I leave this setting on while either listening to CD's or watching TV/movies? Play some of your favorite bass-heavy tracks and adjust the filter threshold until the low notes start reverberating. All contents are Copyright 2023 by AspenCore, Inc. All Rights Reserved. Technical specifications Pro-Ject Tube Box S2 3.5kHz high pass (tweeter) & 250-500Hz high pass (midrange) Subwoofer subsonic filter. Pete has been working in the trades since high school, where he first developed a passion for woodworking. On/Off. WebThe subsonic filter is used to protect your subwoofer from damage due to playing low and loud. Electrodynamic "On a long enough timeline, the survival rate of everyone drops to zero." His other interests include astronomy, hiking, and fishing. MY TURNTABLE is a thorens td 125 fully modded pretty quiet but I still believe not 100% sure that the subsonic filter degrades my sound a little. # New armtube incorporating bi-metalic technology to reduce resonance and increase rigidity. How to set a subsonic filter on a subwoofer? This discussion. The trick is to find the right balance; it should be loud enough that you can feel the bass but attenuated enough that its not destroying your amp. . Or is there at least a subsonic limit to the LFE channel bandwidth? February 2015 Seriously considering the mindsp but I have a concern. Not even close! Setting the Subsonic Filter and Bass Boots. Now, it gets a little more complicated. Help with speaker placement 5.1.2 or 7.1 or ??? Then I normalize the entire album and export the tracks as AAC. EQ2 Half an octave above the EQ1 setting, so for example if on EQ1 the subwoofer has a +-3dB point of 16Hz, the EQ2 setting will have a +-3dB point of 24Hz. (are you certain the box is tuned to 30 hz?). May 2012 Great advice with the test tone. http://www.realmofexcursion.com/downloads.htm, System Design: Help Me Choose Equipment For My Car. Since you are tuned to 35hz, you can set the filter around 30hz to 35hz. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. Selectable subsonic filter settings, that will filter away the deepest frequencies. Anything above 80hz makes the subwoofer easy to locate in the soundstage and you don't want that. It is adjustable 6dB/Oct or 12dB/Oct. Over the years, he has developed a keen interest in a wide variety of DIY projects around the home. A ported sub can safely play about half an octave below its tuned frequency before theres a risk of damage. JavaScript is disabled. You're not going to blow up your car playing below tuning. Just don't be reckless with it. SSF @ 25hz is fine. EDIT 2: Ah, and you dont need your woofer connected to do that 8 Reply blockrocker 3 yr. ago Yes, do this. 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. July 2014 After listening to a few songs I realized that it wasn't getting as low as it should considering my box is tuned to 30Hz and my xover is set to 100Hz so I turned down the SS filter a little more and it sounded alot better. If 30hz seems too low, you can bring it up some. 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 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. The Fora platform includes forum software by XenForo. Is using the subsonic filter a must? It's at 20hz. Building a ported sub using an alpine type R 15inch driver. WebSecondly, a 30Hz tune would put a rule-of-thumb subsonic setting of 22.5Hz. The Subsonic filter slope means at which rate the frequencies should be tapering off, from the frequency point chosen. If the circuit is applied to a stereo unit, build an exact duplicate for the other channel. Your subsonic filter should be set at 30.12hz, which is the max free air response of the driver. The beat way is to do exactly what you are doing. Combine that with the purely basic frequency response of the amplifier itself and you're starting to get so low that a subsonic is almost unnecessary. It will also help reduce low frequency rumble and sounds from the listening environment. So the question is. My sub with my port had 111db at 15Hz and 116 at 20Hz. They have adjustable crossovers that can be selected for various speakers. Piezoelectric Sensory Switch Module An Afterthought, Updated 555 Timer Relay Module A Quick Analysis. Typically, EQ2 setting will sound faster than EQ1 as it has a lack of output in the deepest bass which will give the bass a heavier sound to it. Pro tip; Have a friend/wife/mom help adjusting the phase while you sit in your listening position. The difference in distance in this example is 1 meter. Necessary cookies are absolutely essential for the website to function properly. If it's ported you set it 1/2 octave below the boxes tuning. These cookies will be stored in your browser only with your consent. Copyright 2023 House Grail. February 2013 Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19 Click here for details. For movies this can be especially appealing. Set the LPF at 60-80 Hz. 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! June 2015 Of course, can always adjust for an anomaly track. 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:- 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. If there was such a receiver with this subsonic filter built in they would be using it. That is exactly what buyers looking at the Vitamix. The push button turns on and off subsonic filter . WebGain setting Buttons marked with and set gain of the amplifier. Join the community today and get started. 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 Too many subsonic notes can still damage your subwoofer. 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. It's not always necessary but it really depends on the enclosure, subs, power, and what you listen to. 07-25-2005 at 10:34am. That is, whatever you set it at; only frequencies above that setting go through. I've been using Audacity to create an annotated MP3 collection from my old vinyl and have been living with these subsonic artifacts, worse in some LPs than others. For a better experience, please enable JavaScript in your browser before proceeding. You also have the option to opt-out of these cookies. Well, with the box being not quite the right size for the driver, that's most likely why it never sounds quite right. It is recommended to set up a very subsonic filter with a very steep slope (attention factor) to combat this issue., You can set the subsonic filter on your 1723 Series Subwoofers in the Crossover Menu and for the 1961 Subwoofers in the Setup Menu. 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. 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. June 2012 October 2012 You can select the subsonic filter frequency (frequency at which you want to begin filtering) and subsonic filter slope (the rate at which you want to attenuate the frequencies)., Receive exclusive offers and promotions. (frequency always indicated by corresponding LEDs). The best way I've found to set a SSF is to generate a sweep from 45 down to 10hz, about 60 seconds long, turn the subsonic up, then let that sweep It has a cutoff frequency of 18 Hz. They're right- the answer is No. AN ELITE CAFEMEDIA LIFESTYLE PUBLISHER. October 2014 The only thing you do need to know before we move on is that attenuation doesnt completely dampen sounds of a certain frequency. If you are only running like 200 watts to a sub with 16+ mm of Xmax, you can probably get by with setting it a little lower - just be careful. 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. Play some music with a steady bass beat, and when you hear the most amount of bass, the phase is correctly adjusted. If you have one we missed, let us know in the comments! It is adjustable from 6dB/Oct to 24dB/Oct with 6dB increments. After recording the entire LP and then running the exported AIFF file through ClickRepair, the next thing I do in Audacity is employ the Low Shelf filter set to 12 hz. For a better experience, please enable JavaScript in your browser before proceeding. Somewhere from 50hz to 65hz is likely where you are going to want your crossover set. First the subsonic filter. | House Grail Michael MiguestJames LuongJohn WheelerJean NantaisKevin Barrett, March 2023 Feature highlights. Put on your favorite song and turn the volume up to your normal listening level. The next step is knowing how to make your high-pass filter work for you. Each octave up is twice as many Hz as the previous one, and dividing any frequency by 2 takes it one octave lower. March 2017 You should set the filter at 20Hz, you can set it a tad higher, like 22-25, if you would like. September 2012 a power requirement! You can also buy, sell, or trade your car audio gear with other forum members in our popular classifieds. My speakers have an in-room low extension -3dBs at 32 hz so I don't want to miss out on real bass reproduction. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. 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. 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. Magnepan, A SUBSONIC FILTER ISHIGHLY RECOMMENDEDIF YOU SPIN VINYL, USE PORTED SPEAKERS, AND WANT THE VERYBEST PERFORMANCE FROM YOUR ANALOG FRONT-END. The best way is to do exactly what you are doing. Resolution was greatly improved with excellent transparency. If it's a ported box, set the subsonic about 5hZ below the tuning frequency. I have ported speakers; Ascend Acoustics Sierra 2 EX. its an older pioneer AVR and yes it has a room eq setup feature with a mic. Where I would part company from you is considering budget constraints. Subsonic its the same high-pass filter (HPF) on the sub amplifiers (often on monoblocks) cuts off infrasound. Keep an eye on the subs to make sure they aren't bottoming out and just keep playing with it until you find a setting you like best. LPF covers the top end. If it's sealed, turn the subsonic all the way down to 20. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. If it is set to 30 Hz. I never do anything close to that with my sub because I don't want to blow it. So it's so hard to tell if it's better. 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. March 2012 First the subsonic filter. To remove this unwanted low frequencies, subsonic filters like the circuit featured here is used. As only frequencies If it's sealed it can be opened up, low. Tony. A subsonic filter is a component on your subwoofer that reduces the intensity of notes which come through at lower frequencies. A very difficult decision. So I decided to search the Internet and found your write-up confirming my experience. Subsonic Filter Selectable subsonic filter settings, that will filter away the deepest frequencies. The Subsonic is now correctly set. In off mode the amplifier has an internal subsonic filter at 10 Hz to prevent instabilities in the power supply. November 2014 Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. So thanks for taking your time to explain to us relatively few people who care about such thing! 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. Ok. These cookies do not store any personal information. Your approach to adjusting your subsonic filter depends most heavily on whether your subwoofer is set in a sealed or ported enclosure. Wouldnt a sealed box INCREASE the power handling??? This feature inverts the signal, which means the same as 180 degrees phase, however, this is true 180 degrees at all frequencies. If yes, you have a sealed enclosure. November 2012 December 2017 I have never heard of this. bad contacts- main source of miracles in electricity. Right, or play tones lower and lower and when it unloads Tbone, the JBL amp has it's own low-pass filter built into the amp. I was told 25-30 Hz but I am not totally sure. Report Comment. Copy Comment URL. "Let our rigorous testing and reviews be your guidelines to A/V equipment not marketing slogans", Get our latest product reviews and AV stories emailed to you weekly. January 2023 OK, so if the port tuning frequency is 40Hz then your subsonic should be set to 40Hz which is pretty high. For a better experience, please enable JavaScript in your browser before proceeding. Think of the filter as a slope, not an on-off switch. 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. September 2015 December 2014 The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. You have seen (and perhaps tried), Robotic collision sensors are crash protection devices that detect a crash before or during a collision. A forum for all things Trailblazer SS including mileage, horsepower, transmissions, interior mods, tires and more! JavaScript is disabled. Anything below that setting is attenuated (made quieter). Below tuning the enclosure "unloads" the pressure in the enclosure and it no longer acts as a spring. I do not have mine set at the moment, and I am afraid that if I do set it I will lose my lowest notes, as my understanding of the filter is that it rolls off everything below where it is set so as not to damage the drivers in a ported box. I'm actually very happy with it! I remember watching my woofers move in and out (large excursions) without making a sound. Verify the level equidistant for each sub. This filter has a very sharp cutoff character. Receive exclusive offers and promotions. Check the level of each sub independently by turning off all of the other subs not under test. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. 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. Even among seasoned audiophiles, subsonic filters are a topic guaranteed to sow confusion. Ultimately, I agree with you that that is a very good approach. Subsonic The button on the right side of a front panel turns on and off subsonic filter. This happens independent of the applied recording medium. If you want a little less rolloff, go with an 18 or 12db. Thank you for this Charles! Selectable from 12 Hz to 31 Hz. The number chosen here means the frequencies above will be filtered away to avoid high tones coming from your subwoofer nobody wants to hear Diana Kralls voice through the subwoofer anyways. I never run my sub very hard with movies otherwise the bass overpowers everything! #4. you don't need to run a subsonic filter, if you tune your box correctly. For example, If your subsonic filter is set to 40 Hz, 30 Hz notes will still get through but will be much quieter. 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. January 2013 I'm down at 60 Hz and found that with the music that I listen to it sounds much better. We recommend leaving the phase at 0 degrees when using an AV-Receiver/Processor with time alignment (speaker distance) feature. These cookies track visitors across websites and collect information to provide customized ads. Some bass units on the market dont have subsonic filters built in. You can set the subsonic filter on your 1723 Series Subwoofers in the Crossover Menu and for the 1961 Subwoofers in the Setup Menu. So, if you already set the LPF frequency to 100Hz, then setting the LPF Slope to 12dB/Oct will ensure that the signal has 12dB lower output at one octave above 100Hz (one octave above 100Hz is 200Hz). It will unload under tuning and xmax. Webfactory setting will suit you fine. I also always keep my Bass and Treble to 12:00 -Off. 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. To be effective, a subsonic filter has to be very steep - this allows all wanted frequencies to get through, and rejects those that will only cause problems. July 2016 This website uses cookies to improve your experience while you navigate through the website. April 2022 Check the level of each sub independently by turning off all of the other subs not under test. Weve now covered the purpose of a subsonic filter and how it works. A subsonic filter is a component on your subwoofer that reduces the intensity of notes which come through at lower frequencies. September 2013 December 2018 If On is selected, then the Low Pass Filter will be disabled. Phase adjusting above will shift somewhat with frequency. A forum community dedicated to all mobile audio enthusiasts. You can select the 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. However, you may visit "Cookie Settings" to provide a controlled consent. Tis sub has a 7.3ft3 box made of 1" MDF tuned @ 20Hz with a slot port that is 16" wide 3" tall x 39". Thanks for the responses, I guess I'll continue doing it by ear then. Massive output to 18hz ported vs output down to 10hz sealed but not as much output at 18hz and above. I have mine inside of my phono stage which is a project audio tubebox ds. Yet its not a topic amp owners can blow off. Most all multichannel receivers have bass management. Selected value is indicated by LED. 100-120Hz high pass. Fascinated by all sort of tools, Pete loves reading and writing about all the latest gadgets and accessories that hit the market. A round port is 3" x 3". When using bass-boost chance to burn subwoofer rises as clipping occurs much earlier. Verify the level equidistant for each sub. Use a browser on any computer to play music and movies. For a better experience, please enable JavaScript in your browser before proceeding. 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. Webedited December 2003. Especially on some ported subs. August 2012 For a better experience, please enable JavaScript in your browser before proceeding. WebSetting 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. Home Trials You're setting levels entirely by ear ? Plenty of genres never get anywhere near the 50 Hz range. With all the detail weve gone into, its easy to forget that most of these changes arent audible to the human ear. Adjustable from 0-180 degrees. SEE ALSO: Read our reviews of the best car amplifiers for bass this year, MTX Audio THUNDER1000.1 Thunder Series Car Amplifier, Skar Audio Single 8" 300W Dual 2 Ohm Loaded Sealed Subwoofer Enclosure | IX-1X8D2, 6 DIY Garden Arbor Plans You Can Make Today (With Pictures), How to Install a Pendant Light 12 Easy Tips, 6 Companion Plants for Fruit Trees (With Pictures), Ix Series 8-Inch Dual 2-ohm loaded Subwoofer Enclosure, Peak Power: 300 watts | RMS Power: 150 watts, Subwoofer comes pre-wired and loaded in enclosure. Others have adjusted theirs at multiple volumes and havent noticed any difference. Since the Hz setting on the subsonic filter is the start of a slope, not a cutoff, we want to set it higher than 20 Hz. A subsonic filter is mostly used in low frequency technology. I have a TC Sounds LMS- Ultra 5400 18" subwoofer in a 7.3ft 3 ported enclosure after all displacements. (anthem arc) But I think I can only set the high pass as low as 20hz thus loosing anything below that.. Hi. What Is a Subsonic Filter & Why Should You Care? Thats where all the bone-shaking, window-rattling fun is! Note that my It was set to Off so I flipped it to On and the woofer, while slightly moving, was moving dramatically less than when the setting is Off. March 2016 October 2013 It has very extensive dsp options and probably cheaper than selling your qsc amp and buying an inuke. It may not display this or other websites correctly. The Fora platform includes forum software by XenForo. As a very general rule of thumb, I usually set an infrasonic filter 1/3 octave below tuning frequency. There was a lot of drone in that 60-80 Hz range. We absolutely love the feeling of low notes thudding through our whole bodies, but we love something else just as much: not having to replace our subwoofers once a month.