August 2012 It also has a balance control knob which is uncommon for a phono preamp. June 2015 The short answer to your question is no. 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. EQ1 Gives a flat ground plane response to under 20 Hz, which will give great emphasis on the deepest bass in-room. August 2013 I have mine set slightly lower for my sealed box. 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'm writing to you to tell you about my experience with my subsonic filter. If youre a true bass-head, you might be incensed at the idea that youd want to cut out subsonic frequencies. JavaScript is disabled. 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. However, you may visit "Cookie Settings" to provide a controlled consent. Bowers & Wilkins LCR 60 S3 Speaker with Kevlar woofers. Since you are tuned to 35hz, you can set the filter around 30hz to 35hz. 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. CarAudio.com is the oldest and largest car audio forum community, since 2000. 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. 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 Let the user decide what sounds best to them. Enjoy your next ride with your newly balanced bass track! Pro tip; Have a friend/wife/mom help adjusting the phase while you sit in your listening position. Think of the filter as a slope, not an on-off switch. PFM Subsonic Filter: The Epicenter Concert Series utilizes a PFM (Programmable Frequency Match) filter which will help with speaker control and amplifier power management. We recommend this setting for larger rooms. geolemon. 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. April 2016 Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19. April 2014 JavaScript is disabled. Report Comment. Michael MiguestJames LuongJohn WheelerJean NantaisKevin Barrett, March 2023 A sub sonic is for when your playing loud below tuning it helps keep the sub under control and not over extend or hit the back plate. Cheers! Edit. 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. 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. and I have a light on my amp that turns red when clipping and if that happens I turn the gain down. 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. 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. Check the level of each sub independently by turning off all of the other subs not under test. Tbone, the JBL amp has it's own low-pass filter built into the amp. Seriously considering the mindsp but I have a concern. I also have a vintage McIntosh 2200 amplifier which is a 20hz to 20kHz amp. The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. 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. 11. June 2013 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. That is, whatever you set it at; only frequencies above that setting go through. Low subsonic frequencies, especially 20 Hz and below, damage the structure, so we want to attenuate them as much as we can. 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. 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. You are correct in the presumption that subsonic filters provide a level of protection from over excursion. March 2017 Necessary cookies are absolutely essential for the website to function properly. Subsonic . My sub with my port had 111db at 15Hz and 116 at 20Hz. For example, If your subsonic filter is set to 40 Hz, 30 Hz notes will still get through but will be much quieter. Doing this will enable you to I listen to vinyl on a Technics 1710 turntable. Check out the MTX Audio THUNDER1000.1 Thunder Series Car Amplifier for a great amp with a subsonic filter. Learn more OK, I'm convinced Show me the demo first Set it to about 20 Hz. 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. 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. 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). But now have a new car, this will take a while to figure out. So I decided to search the Internet and found your write-up confirming my experience. you can build the box so that it does not happen. This happens independent of the applied recording medium. Right, or play tones lower and lower and when it unloads Update Privacy Preferences Do it in the avr when I do, but it's rare I need more (or less). A subsonic filter is mostly used in low frequency technology. 1,773 posts. Not a 3" round port. If you are trying to find 65hz, just start cutting things in half. My speakers have an in-room low extension -3dBs at 32 hz so I don't want to miss out on real bass reproduction. I have no clue what I would like the best.. Good point the sealed could tame peaks better and room gain could get me to where I want to be.. If you set an 18 db/oct ss filter to 40 hz, then at 20 hz it will be 18 db quieter, the 24 db/oct would be 24 db quieter. 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. Thank you for this Charles! Help with speaker placement 5.1.2 or 7.1 or ??? The phase shift is neglegible. Subsonic Filter Selectable subsonic filter settings, that will filter away the deepest frequencies. 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. We recommend you try the factory setting first. Setting the record level . Its the opposite of a low-pass filter, which only attenuates signals above a certain line. 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. The value you filter against needs to be the Property Name, not the database column name. It will unload under tuning and xmax. I also always keep my Bass and Treble to 12:00 -Off. 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. First the subsonic filter. Subsonic The button on the right side of a front panel turns on and off subsonic filter. Set it and listen. You set it just under where the mid bass speakers pick up. My friend always says never use equilisers or add something in the chain of audio. WebSetting computer to higher frequency (352,8kHz or 384kHz) deactivate S/PDIF Out and allows to record in DSD128 format. Just make sure to set the xover on the deck before you turn the xover on the amp to the highest Hz. The difference in distance in this example is 1 meter. By clicking Accept All, you consent to the use of ALL the cookies. Anything above 80hz makes the subwoofer easy to locate in the soundstage and you don't want that. How to set a subsonic filter on a subwoofer? This category only includes cookies that ensures basic functionalities and security features of the website. It can help your amp save power when the bass gets real low. WebThe subsonic filter is used to protect your subwoofer from damage due to playing low and loud. Were right there with you. A round port is 3" x 3". 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. For a better experience, please enable JavaScript in your browser before proceeding. 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. Now, it gets a little more complicated. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. and a low pass for the other 7 speakers at 80hz. It decreases the amplitude of those low notes you feel more than you hear. In off mode the amplifier has an internal subsonic filter at 10 Hz to prevent instabilities in the power supply. It is easy to set all you need are test tones and a multi-meter. (Optional) Get an app for your phone. Not even close! We recommend this setting for smaller rooms and/or to get a faster, more musical and punchy sounding bass. 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. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. You must log in or register to reply here. Our Q&A covers all the big questions you might have about subsonic filters. # Low friction, completely stable dual pivot bearing design for vertical movement. The subsonic filter should be set slightly below the tuning frequency of the port in your box. That means the safest setting for its subsonic filter is half an octave below whatever frequency the port is tuned to. Analytical cookies are used to understand how visitors interact with the website. They have adjustable crossovers that can be selected for various speakers. 20-30Hz high pass. The Fora platform includes forum software by XenForo. It has a cutoff frequency of 18 Hz. On ported speaker enclosures, you must tune the port to its optimal frequency. Subsonic Filter & Balance This preamp has a subsonic filter which can help make older records with more noise sound better. April 2015 other than a high pass filter set to 80hz. It will also help reduce low frequency rumble and sounds from the listening environment. If 30hz seems too low, you can bring it up some. 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. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. October 2015 So you want to delay the signal to the closest subwoofer by 1 meter (1 / 343 * 1000 = 2,915 ms). 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. If your subsonic filter is set to 40 Hz or 30 Hz, notes will still get through but will be much quieter. July 2012 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. WebTurn your Subsonic Filter down to 10Hz then slowly turn up the filter frequency until you hear it take effect on your sub bass. 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. Sign up to newsletter and stay in touch with us, Copyright 2015-2023 Arendal Sound - All rights reserved, 5% Ambassador refund for existing Ambassadors. Ultimately, I agree with you that that is a very good approach. If yes, you have a sealed enclosure. On the flip side, I think it's a good place to start. If you're just guessing as to what frequency to set it at. On top of that you're guessing whe With my IB subs I run 15Hz SS, it hits 20 just fine but I do have to EQ it up with these subs. If your components will play lower efficiently then you can go lower than 80. (To learn more about frequencies and how they work, check out our Beginners Guide to Frequency Ranges.). This feature inverts the signal, which means the same as 180 degrees phase, however, this is true 180 degrees at all frequencies. 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. 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 For Home Cinema use, where an AVR is used we recommend LPF Bypass On. That's the simple answer. Then adjust it back up until the bass notes tighten up again. I never do anything close to that with my sub because I don't want to blow it. We recommend leaving the phase at 0 degrees when using an AV-Receiver/Processor with time alignment (speaker distance) feature. The beat way is to do exactly what you are doing. Adding the subsonic filter will ensure the subwoofer has less excursion in the deepest bass, and typically when filtering away some of the deepest bass it will sound even tighter. I'd love to", "I2C is a multi-address bus man. "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. I'm down at 60 Hz and found that with the music that I listen to it sounds much better. For movies this can be especially appealing. You using an avr? 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 October 2020 If you're looking for extreme protection of the sub, then the higher slope (24) is better. October 2014 It In off mode the amplifier has an May 2014 You have seen (and perhaps tried), Robotic collision sensors are crash protection devices that detect a crash before or during a collision. 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. You should set the filter at 20Hz, you can set it a tad higher, like 22-25, if you would like. I don't have it turned up loud enough to ruin my sub even at 10hz so I am not worried about that just wondering what the lower bass notes will be like tuned at 20hz. 07-25-2005 at 10:34am. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Come join the discussion about capacitors, amplifiers, subwoofers, marine and automotive audio, troubleshooting, and more! I have a TC Sounds LMS- Ultra 5400 18" subwoofer in a 7.3ft 3 ported enclosure after all displacements. August 2020 With all the detail weve gone into, its easy to forget that most of these changes arent audible to the human ear. If 30hz seems too low, you can bring it up some. May 2015 2. Owner Stereo Integrity Co-owner Obsidian Car Audio Associate Sundown Audio bad contacts- main source of miracles in electricity. 100-120Hz high pass. Its not important to understand exactly how theyre wired. So, if its tuned to 40 Hz, set the filter knob to 30 Hz. What Is a Subsonic Filter & Why Should You Care? Subsonic its the same high-pass filter (HPF) on the sub amplifiers (often on monoblocks) cuts off infrasound. 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 I run a movie I have to find the right setting because every movie sounds different. If not, its ported. 3.5kHz high pass (tweeter) & 250-500Hz high pass (midrange) Subwoofer subsonic filter. As only frequencies Slowly turn the bass boost until a distortion appears then dial it back to a clear sound. 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). 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:- You might try this: lCol = objNavigation.Where 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. For a better experience, please enable JavaScript in your browser before proceeding. My new ones should be better. (anthem arc) But I think I can only set the high pass as low as 20hz thus loosing anything below that.. Hi. For the crossover. 4. Put on your favorite song and turn the volume up to your normal listening level. 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. Can you name them? These cookies track visitors across websites and collect information to provide customized ads. That one takes some listening to get dialed in. Play some music with a steady bass beat, and when you hear the most amount of bass, the phase is correctly adjusted. Are you using any kind of EQ on it or have you at least taken any sweeps of it in your room? Others have adjusted theirs at multiple volumes and havent noticed any difference. July 2016 Since you are tuned to 35hz, you can set the filter around 30hz to 35hz. Especially on some ported subs. December 2017 April 2013 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 A forum community dedicated to home theater owners and enthusiasts. 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. Feature highlights. it will attempt to quieten the notes that are below that frequency. December 2021 I have since added some more absorption to help counter a 60Hz suckout, (fiberglass batts under some end-tables) but nothing else. I don't have it turned up loud enough to ruin my sub even at 10hz so I am not worried about that just wondering what the lower bass notes will be like tuned at 20hz. In connecting the subsonic fiter, remove the decoupling capacitor from the end module to avoid distorting the signal. Weve already mentioned that the main mechanic these subsonic filters use is attenuation. If I set it to flat, (fine for sealed) then it will not apply a filter and the sub could over drive when lower than tuning frequency. I'm actually very happy with it! 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. Deals For music setups the phase needs to be adjusted so the subwoofer blends with the front speakers. Therefore, to get your subsonic filter setting, take your subwoofers tuned frequency and multiply it by 0.75. Your subsonic filter should be set at 30.12hz, which is the max free air response of the driver. Copy Comment URL. December 2018 You are using an out of date browser. February 2012, All make the port 6% longer should tune it a little lower. January 2015 All rights reserved. December 2013 Right you will have to port it lower, watch the excursion on low notes. Too many subsonic notes can still damage your subwoofer. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. A good point to set it is 25hz. July 2014 So if you have a SUBwoofer in your Your one stop shop for all Trailblazer Suspension/Wheels. Thanks for your advise on this topic. So if im tuned to 33hz, I set my SF to 25hz? Great info by the way!! You could get a minidsp if you don't want to buy a new amp. Most often, the very low frequencies create distorsions in music recording or reproduction. Of course, can always adjust for an anomaly track. You are using an out of date browser. 3 modes for sealed subwoofers, 6 modes for vented subwoofers as they can be used in vented or sealed mode. so if the bass is up too high it drowns out everything else. 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. Frequencies blow 10 Hz are attenuated by more than 35 dB. The only thing you do need to know before we move on is that attenuation doesnt completely dampen sounds of a certain frequency. Copyright 2023 House Grail. Over the years, he has developed a keen interest in a wide variety of DIY projects around the home. WebSecondly, a 30Hz tune would put a rule-of-thumb subsonic setting of 22.5Hz. If you arent sure which one you have, you can tell by looking at the box. The sub moves just a little at times and that when I put the system at MAX. 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". Join the community today and get started. Each octave up is twice as many Hz as the previous one, and dividing any frequency by 2 takes it one octave lower. Where I would part company from you is considering budget constraints. If you have one we missed, let us know in the comments! Subsonic notes sound awesome, but they damage your hardware when they get out of control. #4. you don't need to run a subsonic filter, if you tune your box correctly. Pioneer 880PRS~boston comps/alpine coax on Kappa 4 Z~back to Alpine mrd-m500 v12 on pyle 15s IB. I don't know what to say..to me 10Hz IS subsonic. 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). If there was such a receiver with this subsonic filter built in they would be using it. Use a browser on any computer to play music and movies. A collision, Turbidity is considered a good measure of the quality of water as it is a measurement of how. November 2014 The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. That is exactly what buyers looking at the Vitamix. I have a totally restored Nikko Alpha II amp and a Nikko Beta 20 Pre Amp. June 2012 For a better experience, please enable JavaScript in your browser before proceeding. What I wanted to say is that amps sound the same. They're right- the answer is No. I usually just try to play the lowest hitting song i can find or some sine waves and turn it up as loud as i would have it then adjust it so it doesn't bottom out. Check the level of each sub independently by turning off all of the other subs not under test. I have a sine sweep but have nothing to record the frequencty response and no eq either. Webedited December 2003. My avr has very advanced room correction. December 2012 His other interests include astronomy, hiking, and fishing. basically, if you tune the box higher, and/or you will gain some spl, but excursion increases below the roll-off. The low pass can start anywhere above the low pass frequency of the Ok I have the new 10w6v3 in jl audios ported square box and it fkn pounds but I just need to figure out how to set the sub to get best output. Below tuning the enclosure "unloads" the pressure in the enclosure and it no longer acts as a spring. 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 Ideal power. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The Subsonic filter slope means at which rate the frequencies should be tapering off, from the frequency point chosen. Selectable from 12 Hz to 31 Hz. A forum for all things Trailblazer SS including mileage, horsepower, transmissions, interior mods, tires and more!