I had my 6-channel amp's opamp and power supply upgraded to better quality parts / grades. LPF covers the top end. Its the opposite of a low-pass filter, which only attenuates signals above a certain line. It's not always necessary but it really depends on the enclosure, subs, power, and what you listen to. The subsonic filter is a High Pass crossover. basically, if you tune the box higher, and/or you will gain some spl, but excursion increases below the roll-off. March 2014 Right, or play tones lower and lower and when it unloads June 2012 Originally a subsonic filter was designed to catch recording errors and frequencies below 20hz hence "subsonic" that could possibly damage your subs. . can I use this circuit to generate a tremolo effect? It is adjustable 6dB/Oct or 12dB/Oct. September 2014 Your favorite music genres will push the limits of the low end. 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. If either of those is true, read on, and well get just a little bit into the weeds. If 30hz seems too low, you can bring it up some. In off mode the amplifier has an internal subsonic filter at 10 Hz to prevent instabilities in the power supply. As a very general rule of thumb, I usually set an infrasonic filter 1/3 octave below tuning frequency. I cant find the SL100B Transistor, Therefore, to get your subsonic filter setting, take your subwoofers tuned frequency and multiply it by 0.75. Very common crossover frequency. We recommend this setting for larger rooms. By clicking Accept All, you consent to the use of ALL the cookies. 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. A round port is 3" x 3". How to set your Subsonic filter - Steve Meade Designs My new ones should be better. INSTRUCTIONS FOR USE Pro-Ject Tube Box S2 Ultimately, I agree with you that that is a very good approach. Best Phono Preamp Under $500 The tuning frequency acts as a second high-pass barrier, but it does not replace the function of a subsonic filter. This filter has a very sharp cutoff character. So it's so hard to tell if it's better. Or is there at least a subsonic limit to the LFE channel bandwidth? Selectable from 12 Hz to 31 Hz. 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. December 2012 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 keep them off if in a sealed Pro tip; Have a friend/wife/mom help adjusting the phase while you sit in your listening position. Thanks for reading, and as always, feel free to sound off in the comments below. February 2017 December 2019 My avr has very advanced room correction. However, you may visit "Cookie Settings" to provide a controlled consent. 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. If you arent sure which one you have, you can tell by looking at the box. I rarely touch sub levels. subsonic filter Each octave up is twice as many Hz as the previous one, and dividing any frequency by 2 takes it one octave lower. A SUBSONIC FILTER IS HIGHLY RECOMMENDED IF YOU SPIN I also have a vintage McIntosh 2200 amplifier which is a 20hz to 20kHz amp. 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. 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. 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. Most often, the very low frequencies create distorsions in music recording or reproduction. "Maybe you could further investigate programming this module through its serial port. Set the LPF at 60-80 Hz. If On is selected, then the Low Pass Filter will be disabled. If you are trying to find 65hz, just start cutting things in half. January 2019 For stereo users you may leave this setting Off, so you can adjust the Low Pass Filter under the next step. Verify the level equidistant for each sub. March 2013 November 2012 I have since added some more absorption to help counter a 60Hz suckout, (fiberglass batts under some end-tables) but nothing else. Subsonic The button on the right side of a front panel turns on and off subsonic filter. Put on your favorite song and turn the volume up to your normal listening level. I'm down at 60 Hz and found that with the music that I listen to it sounds much better. Subsonic Filter Selectable subsonic filter settings, that will filter away the deepest frequencies. If you have a ported box I would definatley keep the subsonic at 30 Hz. Tony. This power and flexibility is accessible via PC-GUI software and our innovative single-knob LCD control panel. so I find where it sounds perfect and leave it there. It will also help reduce low frequency rumble and sounds from the listening environment. If it's a ported box, set the subsonic about 5hZ below the tuning frequency. JavaScript is disabled. What Is a Subsonic Filter | Arendal Sound The Subsonic filter slope means at which rate the frequencies should be tapering off, from the frequency point chosen. How do you set up a subsonic filter? - Remodelormove.com May 2015 Setting subsonic filter October 2020 So if im tuned to 33hz, I set my SF to 25hz? Great info by the way!! 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". (anthem arc) But I think I can only set the high pass as low as 20hz thus loosing anything below that.. Hi. If you dont like to crank your volume up that far, you might never notice any difference in subsonic sounds. Verify the level equidistant for each sub. December 2014 The difference in distance in this example is 1 meter. Michael MiguestJames LuongJohn WheelerJean NantaisKevin Barrett, March 2023 You can select the The subsonic filter dampens all frequencies below where you set it so as not to unload your subs if you play a frequency below the port tuning. I have a totally restored Nikko Alpha II amp and a Nikko Beta 20 Pre Amp. You're not going to blow up your car playing below tuning. Just don't be reckless with it. SSF @ 25hz is fine. Some bass units on the market dont have subsonic filters built in. Report Comment. Car Reviews That could help explain the disparity. On/Off. Bass boost source: boobland.club Bass boost increases the volume at a certain frequency, usually at 40-45 Hz. its an older pioneer AVR and yes it has a room eq setup feature with a mic. Wouldnt a sealed box INCREASE the power handling??? If it is set to 30 Hz. Check the level of each sub independently by turning off all of the other subs not under test. 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). The Fora platform includes forum software by XenForo. Sign up to newsletter and stay in touch with us, Copyright 2015-2023 Arendal Sound - All rights reserved, 5% Ambassador refund for existing Ambassadors. The short answer to your question is no. 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. If your subsonic filter is set to 40 Hz or 30 Hz, notes will still get through but will be much quieter. When I flipped the switch I could rarely see them move much at all. For example, If your subsonic filter is set to 40 Hz, 30 Hz notes will still get through but will be much quieter. Over the years, he has developed a keen interest in a wide variety of DIY projects around the home. it will attempt to quieten the notes that are below that frequency. 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. Check out the MTX Audio THUNDER1000.1 Thunder Series Car Amplifier for a great amp with a subsonic filter. Your subsonic filter should be set at 30.12hz, which is the max free air response of the driver. 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. Hi I first like to say great article you wrote! You set it just under where the mid bass speakers pick up. 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. It decreases the amplitude of those low notes you feel more than you hear. Delete. Setting the Subsonic Filter and Bass Boots. When you buy via links on our site, we may earn an affiliate commission at no cost to you. The SQ turned out fantastic after some burn-in. The next step is knowing how to make your high-pass filter work for you. Help setting Subsonic filter!! : CarAV - Reddit Below tuning the enclosure "unloads" the pressure in the enclosure and it no longer acts as a spring. EQ3 One octave above the EQ1 setting, so for example if on EQ1 the subwoofer has a +-3dB point of 16Hz, the EQ3 setting will have a +-3dB point of 32Hz. March 2012 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. We recommend leaving the phase at 0 degrees when using an AV-Receiver/Processor with time alignment (speaker distance) feature. 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). It is very important that the capacitors C1, C2, C4, C5 and C7 are of exactly the same values in both channels. 1,773 posts. This filter has a very sharp cutoff character. Doesn't sound like it if you are constantly adjusting. Copy Comment URL. I'm actually very happy with it! The hertz scale is logarithmic. Doing this will enable you to How to Adjust Your Car Amplifier for the Best Sound Quality? 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. November 2018 I'm writing to you to tell you about my experience with my subsonic filter. other than a high pass filter set to 80hz. It filters out very low frequency content that can potentially send your subs to the moon. Seriously considering the mindsp but I have a concern. I flipped it on and off multiple times just to confirm my observations. And what's your buddy's vehicle? Set it and listen. 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. As only frequencies 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. It may not display this or other websites correctly. So you want to delay the signal to the closest subwoofer by 1 meter (1 / 343 * 1000 = 2,915 ms). Selectable subsonic filter settings, that will filter away the deepest frequencies. Especially on some ported subs. Technical specifications Pro-Ject Tube Box S2 Is it possible it affects the highs. Turn your Subsonic Filter down to 10Hz February 2014 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. 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. of no electrical". July 2016 Support the12volt.com Back to Top bullseye753 Copper - Posts: 61 Joined: May 27, 2008 Location: North Carolina, United States October 2014 Thanks for the replys. 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. Owner Stereo Integrity Co-owner Obsidian Car Audio Associate Sundown Audio 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. May 2016 While filtering is important, this isnt necessarily a dealbreaker; it all depends on what kind of music you listen to. WebSecondly, a 30Hz tune would put a rule-of-thumb subsonic setting of 22.5Hz. # Highest grade materials used throughout. JavaScript is disabled. The value you filter against needs to be the Property Name, not the database column name. Plenty of genres never get anywhere near the 50 Hz range. I never run my sub very hard with movies otherwise the bass overpowers everything! If 30hz seems too low, you can bring it up some. All contents are Copyright 2023 by AspenCore, Inc. All Rights Reserved. I understand that high end gear might contain a subsonic filter option etc.. 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 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. 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. I also recommend putting a jumper in the subsonic filter rows. These cookies will be stored in your browser only with your consent. If it's sealed, turn the subsonic all the way down to 20. The blue LED above the button is illuminated when its on. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order. 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. A forum community dedicated to all mobile audio enthusiasts. They have adjustable crossovers that can be selected for various speakers. 3-way speaker systems. Multiple Subwoofer Edit. That's the simple answer. Of course, can always adjust for an anomaly track. 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. geolemon. You'll find everything you want to know about car audio and get installation help, tips and great deals on your car stereo projects. We recommend measuring the distance to the subwoofer furthest away and adding delay to the remaining subwoofer(s) so that their delay is equal to the difference in distance between it and the furthest away subwoofer. Phase adjusting above will shift somewhat with frequency. My remaining question is should I leave this setting on while either listening to CD's or watching TV/movies? JavaScript is disabled. When using bass-boost chance to burn subwoofer rises as clipping occurs much earlier. I have never heard of this. 4. What I wanted to say is that amps sound the same. April 2012 House Grail is reader-supported. For the crossover. Since its tuned at 20hz will that act as a subsonic filter for 10 to 15hz or not at all? 100-120Hz high pass. First the subsonic filter. Setting the gains, x-over, and subsonic filter What Is a Subsonic Filter & Why Should You Care? make the port 6% longer should tune it a little lower. "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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. May 2014 Thanks! The best thing to do is listen. I remember watching my woofers move in and out (large excursions) without making a sound. Well, with the box being not quite the right size for the driver, that's most likely why it never sounds quite right. August 2013 You should set the filter at 20Hz, you can set it a tad higher, like 22-25, if you would like. This feature inverts the signal, which means the same as 180 degrees phase, however, this is true 180 degrees at all frequencies. subsonic or infrasonic filter necessary The only thing you do need to know before we move on is that attenuation doesnt completely dampen sounds of a certain frequency. But opting out of some of these cookies may affect your browsing experience. setting up subsonic filter and crossover? | Chevy Trailblazer SS My friend always says never use equilisers or add something in the chain of audio. What do you think? You can still turn on your subsonic even on a sealed box. 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. December 2013 We recommend this setting for smaller rooms and/or to get a faster, more musical and punchy sounding bass. The maximum useful frequency is 3 MHz. 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. 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. Low subsonic frequencies, especially 20 Hz and below, damage the structure, so we want to attenuate them as much as we can. Sign up to newsletter and stay in touch with us, Copyright 2015-2023 Arendal Sound - All rights reserved. Let the user decide what sounds best to them. Ok. JavaScript is disabled. It may not display this or other websites correctly. Thank you for this Charles! 3 modes for sealed subwoofers, 6 modes for vented subwoofers as they can be used in vented or sealed mode. What vehicle is this? 07-25-2005 at 10:34am. SUBSONIC FILTERS | Stereophile.com For a better experience, please enable JavaScript in your browser before proceeding. You can also buy, sell, or trade your car audio gear with other forum members in our popular classifieds. Turn the Low You using an avr?