OldsBoomer Posted August 7, 2013 Report Share Posted August 7, 2013 In the trunk? Suburban Coming Soon Link to comment Share on other sites More sharing options...
nCOMP1337 Posted August 7, 2013 Author Report Share Posted August 7, 2013 Yes, the plan is to seal off the truck from the cabin Link to comment Share on other sites More sharing options...
OldsBoomer Posted August 7, 2013 Report Share Posted August 7, 2013 OK then a smaller ratio is good. Try tunning a little lower. And those subs like the lows so maybe 1.25 or a little more per sub sealed. Play with it on win Suburban Coming Soon Link to comment Share on other sites More sharing options...
nCOMP1337 Posted August 7, 2013 Author Report Share Posted August 7, 2013 I still don't know exact sub displacement, but currently with the above design, each sub is seeing a little less than 1.25 cuft each. I can make it slightly larger, by adding an inch or two to the length of the box. My trunk is around 38 deep or so and I'm using only 28 in this design. Also how much lower tuning would you suggest? 45hz? Link to comment Share on other sites More sharing options...
OldsBoomer Posted August 7, 2013 Report Share Posted August 7, 2013 Play with in winisd. See what responses you get. If your looking for SPL then get the peak your looking for. Also 4th orders are a lot of testing. I like my peak lower Suburban Coming Soon Link to comment Share on other sites More sharing options...
nCOMP1337 Posted August 7, 2013 Author Report Share Posted August 7, 2013 alright, ill see what I can come up with. I went ahead and measured my trunk to see what room i have to work with and i have 38 x 38 x 16, but because i need to keep the ratio smaller, it should be plenty of room. Most people always told me I needed tons of room for a 4th order, but in keeping the ratio small, that is proving not as necessary, though maybe its jsut specifcally due to the specs of these woofers that also allow it to be smaller. Link to comment Share on other sites More sharing options...
nCOMP1337 Posted August 7, 2013 Author Report Share Posted August 7, 2013 Okay so I took the advice of oldsboomer and did a little redesign as well, because i noticed the smaller fold down section ofi my back seats was on the passenger side of the vehicle. so here is the new design, its fairly close to the older one, but smaller sealed:ported sections and a longer port it is a lot closer to a 1:1 ratio and the sealed section technically has more volume, but after sub displacement and possibly bracing, the volume will be closer to even with the ported section I believe. Sealed chamber: 26.5w X 13.5h X 12dIt is 2.48 cuft before displacement. Subs will also be mounted on the front of the baffle separating the sealed and ported sections and I am thinking of some other bracing for the subs since they are pretty heavy too and will be sideways. I thought maybe a couple little half circle cutouts underneath for them to sit on when mounted. Ported Chamber: 26.5w X 13.5h X 17.5d It is 2.29 cuft, except for a few bits of bracing and front of woofers, i dont imagine why I would need anything else in this chamber. so the volume shoudlnt change much. Port: 20l X 13.5w X 3.5d Port is tuned to 45.02 Hz with this current design and estimations of bracing. I mocked up the woofers and box in winisd using the t/s provided by Jacob. Here is the response it gives me, I am not completely sure what I ma reading here, but it is extremely peaky around 45Hz. Thoughts or suggestions? Thank you to those who are helping, I am hoping to be satisfied with a design soon so I can begin building and installing Link to comment Share on other sites More sharing options...
DylanBunch Posted August 8, 2013 Report Share Posted August 8, 2013 I think extremely peaky is an understatement 2006 Ford Explorer 2 Team AA/Sundown 15s 6th order Ct Sounds 7k 4 PRV Mr500 8s Rockford p1000-2 Team Subsonic Lows Link to comment Share on other sites More sharing options...
nCOMP1337 Posted August 8, 2013 Author Report Share Posted August 8, 2013 Lol. Hey the point of the plotted line is on that graph in theory, it just isn't in the viewable plane Link to comment Share on other sites More sharing options...
Platemail Posted April 15, 2015 Report Share Posted April 15, 2015 I wonder what ever happened here? I have 2 X-12's and really need some advice on a 4th order! Link to comment Share on other sites More sharing options...
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