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Gold Member Username: CenusHicksville, Ohio Post Number: 3218 Registered: Jan-05 | well im trying to come up with box designs to get the most from my kicker comps that are in my room well i was thinking what if i build a box like this http://i74.photobucket.com/albums/i248/cenus/box.jpg where the first area is like a normal ported box, but the first port goes into a second box with the another port that comes out would this work or would the waves cancel out, sorry about the sh1tty drawing for some reason paint won't open so i had to free hand it, but hopefully you get the idea. and the number on the ports represent what that pipe would tune 2 like 35hz and 55hz. |
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Gold Member Username: OglejustPost Number: 1763 Registered: Aug-06 | what that design is is a quasi-sixth order series-tuned bandpass. that box, if done right, should be very loud. |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3219 Registered: Jan-05 | wow looked that design up on gogle very interresting reading, the only thing is in all the pics i see the sub is inside the box so the front wave comes out one port and the back wave comes out the other port, is it going to be the same if im only using the back wave to go through both ports. |
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Gold Member Username: OglejustPost Number: 1765 Registered: Aug-06 | o ok i see u have the sub pointing out... hm i think in ur design the ports would work against each other. i would do the 6th order bandpass... put the sub in middle of the boxes. |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3220 Registered: Jan-05 | ya well i would like to keep some sq and from what i read this box is a straight burp box, is their any design that you know of other than ported that would get good spl results while having some sq. |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3222 Registered: Jan-05 | bump dammit. |
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New member Username: DrummaIndianapolis, IN USA Post Number: 6 Registered: Jun-07 | Man, if i were you, I would just get a Ported enclosure. You can tune it low or high based on what your looking to get out of it. If you say SPL with some SQ, I would say tune it around 40Hz. If you would like me to draw some blueprints out for you, I would be more than happy to. Let me know how many cubes and what you would like it tuned to. |
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Gold Member Username: OglejustPost Number: 1787 Registered: Aug-06 | yeah man just go w/ a nice ported box and it will have nice results |
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New member Username: DrummaIndianapolis, IN USA Post Number: 9 Registered: Jun-07 | I agree with Justin Ogle. Those 'quasi-sixth order series-tuned bandpass' are difficult to make and get just right. I would focus on a well designed ported enclosure. |
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Gold Member Username: InsearchofbassPost Number: 5232 Registered: Jun-04 | dustin what I believe your trying to show me is an abc box if so its 66.6 percent first chamber with the sub in it and 33.3 percent second chamber with three identical port lengths one in the first chamber pored to the outside one inside the box connecting to the first and second chamber and a port in the second chamber ported to the outside....if you do this use pvc and tune it by poly in the inside port if you want to refine it after its built ps...use as large of a port area as possible like 4 inch |
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Gold Member Username: InsearchofbassPost Number: 5233 Registered: Jun-04 | refining would be done by removing the sub and adding fill to the interior port one 4 inch should be fine on 150 watts rms |
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Gold Member Username: InsearchofbassPost Number: 5234 Registered: Jun-04 | second chamber is empty with ports set up as explained |
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Gold Member Username: CenusHicksville, Ohio Post Number: 3223 Registered: Jan-05 | so how big do i make each "section" you said 66.6 and 33.3 but is that total or per sub, so each sub calls for 1.5cf min. so if i make the first chamber2.5cf and the second 1.5cf would that work, and also what should i tune the ports to, like one port low and the other port high. |
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Gold Member Username: InsearchofbassPost Number: 5235 Registered: Jun-04 | im gion to a comp but to answer quickly yes its whatever space per sub so multiply times 2 ....its 66.6 percent first chamber 33.3 percent second chamber so ideally 3.00 cf. total so thats about 2.00 cubic feet first chamber 1.00 cubic feet second chamber so if you go wit a 4 inch port 10 inches long youll have a 36 hz port tune first chamber and a 51.4 hz second chamber and then you need a 4 inch port 10 inches long between chamber one and two inside the box also |
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Gold Member Username: InsearchofbassPost Number: 5236 Registered: Jun-04 | actually correction 3.00 cubic feet first chamber 1.00 cubic feet second chamber 35.5 first chamber with a 4 inch pvc port 6 inches long 61.8 hz second chamber with a 4 inch pvc port 6 inches long then add a 4 inch internal port 6 inches long between chamber 1 and chamber 2...if you want to fine tune after stuff the center port with some stuffing but try it witout first ....if you add some all you would have to do is remove the sub or subs to get to the center port |
