As the unloading occurs, this puts the subwoofer at serious risk of bottoming out. When this happens, the column of air inside the port begins to unload and acts as if it were a giant hole in the enclosure. This is especially helpful in ported applications because the lower you go below the tuning frequency of the enclosure, the less the enclosure can control the subwoofer’s excursion. In ported enclosure applications, this feature allows for frequencies below the tuning frequency of the enclosure to be blocked. As you can probably imagine, this can be a very useful feature for your amplifier to have.
What is it? What is its purpose? This article was designed to answer these very questions.īy definition, the term “infrasonic” refers to “frequencies below audible range.” This means that an Infrasonic Filter is designed to filter out the frequencies below the audible range of human hearing. I have never used a miniDSP before but it seems to be a permanent, flexible solution that can be used in as many setups as I need, albeit not simultaneously.We are often asked about the Infrasonic Filter feature on many of our amplifiers. Headphone jack to RCA female > RCA male/male extension > Mixer > Graphic EQ (RCA in/out) > Phase3 (Unbalanced/balanced converter) RCA in/XLR out > Crown XLS2500 (Stereo Lowpass 140Hz) XLR in > subsĮverything I listed after the Mixer is separate to the subs, ie my mains don't share the same graphic eq.
My current setup for my subs is as follows: I was wondering if you could let me know exactly what I would need from Sayal? I need one that works in stereo. I was just checking their site for anything that comes up when I search "dsp" but no photos load. I prefer buying at a store as opposed to online and fortunately I've been to Sayal before, and despite it being quite a long drive it is my preferred option in this case. The ultimate bass management system and they run around $135 US. Other features are delay, phase and crossover functions. If you are running lower power, this can be lower in frequency as there is less power available to push the cone so hard.Ī good option is the Mini DSP, it has the filters you need and parametric EQ to get the subs smooth. Generally speaking, you usualy could get away with the high pass filter at 15Hz.maybe 14Hz depending on the steepness of the filter etc. If you are running at say 300 watts and not hitting Xmax, then you can go lower until you do at a really low frequency. If you hit Xmax at 500 watts in the passband, say 30Hz then it gets critical below tuning. When you model your subwoofer in the computer program, does your sub hit Xmax with the power you are inputing? If so, look at the Xmax below the ported frequency then input filters at different frequencies to see how low you can go before exceeding Xmax. Please let me know if any more information is required to be able to properly assist me. Note that I live in Canada so if there are stores that ship FROM Canada, please suggest those to me as it would likely save me a lot on shipping. However, this seems way too complicated for me, requiring multiple parts and whatnot. These FMODs have caught my eye, but I was told to go the Project 99 route.
#Subsonic filter diy drivers
This is why I made this thread: I am looking for suggestions on a subsonic filter to protect my SDX12 subwoofer drivers in ported enclosures. However, I use a Crown XLS2500W amp which does not have a subsonic filter.
To prevent damage to my drivers from now on, I have been told a subsonic filter was necessary.
#Subsonic filter diy driver
I have ordered a replacement driver since one of mine has started to rattle. More details about them can be found in this thread I posted a little while ago, if needed: I have a pair of SDX12 subwoofers in ported enclosures that I built myself.
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