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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. 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? Very common crossover frequency. If it's sealed, turn the subsonic all the way down to 20. Hi I first like to say great article you wrote! We also use third-party cookies that help us analyze and understand how you use this website. I have never heard of this. 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. The low pass can start anywhere above the low pass frequency of the February 2016 Weve now covered the purpose of a subsonic filter and how it works. That will be a pretty boomy system. I also always keep my Bass and Treble to 12:00 -Off. It filters out very low frequency content that can potentially send your subs to the moon. Below tuning the enclosure "unloads" the pressure in the enclosure and it no longer acts as a spring. March 2015 My friend always says never use equilisers or add something in the chain of audio. That's the simple answer. (are you certain the box is tuned to 30 hz?). So, if its tuned to 40 Hz, set the filter knob to 30 Hz. Let the user decide what sounds best to them. Since its tuned at 20hz will that act as a subsonic filter for 10 to 15hz or not at all? Seriously considering the mindsp but I have a concern. geolemon. It has a cutoff frequency of 18 Hz. 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'd love to", "I2C is a multi-address bus man. Now, it gets a little more complicated. You're not going to blow up your car playing below tuning. Just don't be reckless with it. SSF @ 25hz is fine. You set it just under where the mid bass speakers pick up. 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. Right, or play tones lower and lower and when it unloads Cheers! October 2020 But if you understand how to adjust your subsonic filter and practice doing it right, you might reap some big rewards. If it's ported you set it 1/2 octave below the boxes tuning. 2. "Maybe you could further investigate programming this module through its serial port. The Subsonic filter slope means at which rate the frequencies should be tapering off, from the frequency point chosen. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. other than a high pass filter set to 80hz. October 2014 The phase shift is neglegible. Subsonic covers the low end and will be set according to the subs enclosure. It will unload under tuning and xmax. If 30hz seems too low, you can bring it up some. Owner Stereo Integrity Co-owner Obsidian Car Audio Associate Sundown Audio If 30hz seems too low, you can bring it up some. September 2014 Each octave up is twice as many Hz as the previous one, and dividing any frequency by 2 takes it one octave lower. We recommend this setting for smaller rooms and/or to get a faster, more musical and punchy sounding bass. Others have adjusted theirs at multiple volumes and havent noticed any difference. So thanks for taking your time to explain to us relatively few people who care about such thing! Even among seasoned audiophiles, subsonic filters are a topic guaranteed to sow confusion. The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. Of course, can always adjust for an anomaly track. My port is 16" wide x 3" high and 39" long. Now Available: Tech Talk Podcast with Scott Wilkinson, Episode 19 Click here for details. Since its tuned at 20hz will that act as a subsonic filter for 10 to 15hz or not at all? This morning, I looked at my setting on the pre amp and saw a lever for On Off "Subsonic Fil". 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. (anthem arc) But I think I can only set the high pass as low as 20hz thus loosing anything below that.. July 2016 This filter has a very sharp cutoff character. January 2016 Selected value is indicated by LED. 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. What would you do with a Qi wireless charger? 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. Low subsonic frequencies, especially 20 Hz and below, damage the structure, so we want to attenuate them as much as we can. The Fora platform includes forum software by XenForo. A 20Hz high-pass filter (subsonic filter) can be switched in from the front panel to eliminate unwanted subsonics. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. 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. The blue LED above the button is illuminated when its on. Thanks! For a better experience, please enable JavaScript in your browser before proceeding. I have a sine sweep but have nothing to record the frequencty response and no eq either. If your subsonic filter is set to 40 Hz or 30 Hz, notes will still get through but will be much quieter. In off mode the amplifier has an 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. Set it and listen. WebSetting subsonic filter Tech Support I have a 12-in ported subwoofer box, the box is tuned to 31.7. I remember watching my woofers move in and out (large excursions) without making a sound. Too many subsonic notes can still damage your subwoofer. So in this case the closest setting will be 3ms. My remaining question is should I leave this setting on while either listening to CD's or watching TV/movies? 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. March 2017 When you buy via links on our site, we may earn an affiliate commission at no cost to you. 3.5kHz high pass (tweeter) & 250-500Hz high pass (midrange) Subwoofer subsonic filter. The subsonic filter should be set slightly below the tuning frequency of the port in your box. Turn your Subsonic Filter down to 10Hz Not even close! its an older pioneer AVR and yes it has a room eq setup feature with a mic. I had my 6-channel amp's opamp and power supply upgraded to better quality parts / grades. 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. April 2017 Electrodynamic "On a long enough timeline, the survival rate of everyone drops to zero." it will attempt to quieten the notes that are below that frequency. April 2013 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. A subsonic filter is a component on your subwoofer that reduces the intensity of notes which come through at lower frequencies. October 2012 # Low friction, completely stable dual pivot bearing design for vertical movement. Ultimately, I agree with you that that is a very good approach. December 2018 Are you using any kind of EQ on it or have you at least taken any sweeps of it in your room? 5. Its not important to understand exactly how theyre wired. EDIT 2: Ah, and you dont need your woofer connected to do that 8 Reply blockrocker 3 yr. ago Yes, do this. But opting out of some of these cookies may affect your browsing experience. This power and flexibility is accessible via PC-GUI software and our innovative single-knob LCD control panel. I restore older LPs with Audacity, ClickRepair, and my Mitsubishi LT-22 with an AudioTechnica cartridge. I have mine set slightly lower for my sealed box. 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. http://www.realmofexcursion.com/downloads.htm, System Design: Help Me Choose Equipment For My Car. It is adjustable from 6dB/Oct to 24dB/Oct with 6dB increments. The beat way is to do exactly what you are doing. The best way is to do exactly what you are doing. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. If you dont like to crank your volume up that far, you might never notice any difference in subsonic sounds. Webfactory setting will suit you fine. Join the community today and get started. CarAudio.com is the oldest and largest car audio forum community, since 2000. Subsonic The button on the right side of a front panel turns on and off subsonic filter. 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. The subsonic filter is a High Pass crossover. July 2012 December 2019 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. Sealed enclosures work just like weve described. make the port 6% longer should tune it a little lower. Especially on some ported subs. Thanks for your advise on this topic. The difference in distance in this example is 1 meter. For visual learners, the video below illustrates how low frequencies can distort a subwoofers cone alignment without a filter. I feel like with it on it gives a little less clarity and affects the highs a little less air,space. January 2019 If it's sealed it can be opened up, low. 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. This discussion. 4. October 2013 It is easy to set all you need are test tones and a multi-meter. We recommend this setting for larger rooms. I will definitely take a look at the Nyquist shelf filter. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. a power requirement! A forum for all things Trailblazer SS including mileage, horsepower, transmissions, interior mods, tires and more! Delete. Not only will your low-frequency sound be less distorted, but your expensive subs will also last much longer. August 2013 WebGain setting Buttons marked with and set gain of the amplifier. As far as LPF, it's almost the opposite of a subsonic. How do you adjust a subsonic filter? All rights reserved. you can build the box so that it does not happen. This website uses cookies to improve your experience while you navigate through the website. This helps avoid bad distortion since they cant handle deep bass. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. That means the safest setting for its subsonic filter is half an octave below whatever frequency the port is tuned to. You using an avr? Slowly turn the bass boost until a distortion appears then dial it back to a clear sound. WebInstall the Subsonic server app where you keep your media. There was a lot of drone in that 60-80 Hz range. You can select the Selectable subsonic filter settings, that will filter away the deepest frequencies. I also have a vintage McIntosh 2200 amplifier which is a 20hz to 20kHz amp. I'm actually very happy with it! 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. The Fora platform includes forum software by XenForo. The frequencies below the crossover are sent to the subwoofer. 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. Not a 3" round port. They have adjustable crossovers that can be selected for various speakers. I rarely touch sub levels. 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. Hi. So the question is. 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 SQ turned out fantastic after some burn-in. I got a couple of anticollision car door warning lights! So if im tuned to 33hz, I set my SF to 25hz? Great info by the way!! Set the subsonic filter at about Fs or about 15% below the port tuning frequency (FO) whichever is higher. If it's a ported box, set the subsonic about 5hZ below the tuning frequency. Home Trials April 2012 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). For example, If your subsonic filter is set to 40 Hz, 30 Hz notes will still get through but will be much quieter. its a high pass filter for your subwoofers. January 2014 Any difference could cause noticeable phase shift in the output signal. Just make sure to set the xover on the deck before you turn the xover on the amp to the highest Hz. to match the cutoff frequency and damping of any acoustic-suspension speaker and to set the bass boost and net damping. JavaScript is disabled. 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.