Wantin2DropCheap Posted March 24, 2018 Report Posted March 24, 2018 I have 4 Powerbass 1204D 12" subwoofers which have a frequency range of 31-500hz and I'm building a custom box Manufacturer recommends 10 cubic foot box (ported) tuned to 34hz subsonic at 37hz?? which confuses me? My question is if I tune my 10 cubic foot box (ported) tuned to 32hz subsonic at 25hz. (24hz would be half an octave lower than tuning or the unloading point as I understand) Will I be asking for trouble? or am I ok, I have done a lot of reading and still not sure on this topic I like the lows, at the same time I don't want to toast my subs. Any advice or input will be appreciated?
Triticum Agricolam Posted March 24, 2018 Report Posted March 24, 2018 It depends on how much power you are running. I searched for Powerbass 1204D and there are bunch of different products lines (S-series, L-series, M-series), which one do you have? "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
Wantin2DropCheap Posted March 25, 2018 Author Report Posted March 25, 2018 they are the S series and I have 1200 watt kicker amp
ckeeler11 Posted March 26, 2018 Report Posted March 26, 2018 On 3/24/2018 at 3:28 PM, Wantin2DropCheap said: I have 4 Powerbass 1204D 12" subwoofers which have a frequency range of 31-500hz and I'm building a custom box Manufacturer recommends 10 cubic foot box (ported) tuned to 34hz subsonic at 37hz?? which confuses me? 10 cubes seems huge for 4 12's. Subsonic needs to be set below tuning otherwise you will be killing your output around tuning which is where you get the most output. On 3/24/2018 at 3:28 PM, Wantin2DropCheap said: My question is if I tune my 10 cubic foot box (ported) tuned to 32hz subsonic at 25hz. (24hz would be half an octave lower than tuning or the unloading point as I understand) Will I be asking for trouble? or am I ok, I have done a lot of reading and still not sure on this topic I like the lows, at the same time I don't want to toast my subs. Any advice or input will be appreciated? You are going to have to play with it. It will depend on how you are using eq and bass boost; Also the slope of your lpf. I would start there and if notice the subs bottoming out or distorting then you should raise it.
Wantin2DropCheap Posted March 27, 2018 Author Report Posted March 27, 2018 the manufacturer says 2.5 cubic feet per sub. that's how I reached the 10 cubes
ckeeler11 Posted March 27, 2018 Report Posted March 27, 2018 It maybe right. I dont have access to WinISD so I can't model them.
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