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If it's a ported box, set the subsonic about 5hZ below the tuning frequency. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Subsonic Filter Selectable subsonic filter settings, that will filter away the deepest frequencies. 4. Hi I first like to say great article you wrote! January 2014 It has a cutoff frequency of 18 Hz. The Subsonic is now correctly set. You are using an out of date browser. Its not important to understand exactly how theyre wired. Subsonic The button on the right side of a front panel turns on and off subsonic filter. subwoofer equalizer Were right there with you. March 2016 (frequency always indicated by corresponding LEDs). 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 If you have a ported box I would definatley keep the subsonic at 30 Hz. Anechoically "flat to 20Hz" vs The sweet spot for getting some pounding bass without destroying your subwoofer is between 25 Hz and 35 Hz. October 2012 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. I had my 6-channel amp's opamp and power supply upgraded to better quality parts / grades. 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. 3-way speaker systems. Home Trials What is this? July 2016 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". March 2022 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. January 2019 Since its tuned at 20hz will that act as a subsonic filter for 10 to 15hz or not at all? Subsonic . For a better experience, please enable JavaScript in your browser before proceeding. June 2015 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. You're setting levels entirely by ear ? 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). Dayton Audio SPA250DSP 250W Subwoofer Plate Amplifier 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.