eekaboo:I think if you are going to run it sealed the Dayton with the bass boost will yield the best results. I like the way it looks with a 3-3.5 cu ft box. And it is just under xmax with rated 240w.I'm getting an mfw15 woofer with some cosmetic damage from GR Research here for 59$. Any opinions about using it with a
SA1 sub amp in a sealed sand filled box? Could I do better amp wise for about the same money?
I thought I would build this one.I'm not sure why you would sand fill the box? There are other ways to get a stable cabinet and better things to use for fill.
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I already have three of these woofers. Back in July, I asked Mark Seaton if he would provide a DIY design for a two driver sub. He sounded interested in the idea, but so far hasn't posted anything. The thread is available in Sandbagger's forum (Motor City Custom Audio).
Here is a real noobish question:does the shape of the enclosure make a difference or is it just volume that matters?
I hope you have fun edgebsl !
Just good old R11 fiberglass with no backing on it of course. I will act a little like its in a larger enclosure. as far has to how much to use??? a little is good, have seen as much as 1lb of fiberglass per cubic foot of boxI'm putting together the sub. Should I fill the box with fiberglass? Rockwool? It is a sealed box...
Adding damping material, such as lambs’ wool, fiberglass, or Dacron polyester (pillow stuffing like Poly-Fil) to your subwoofer enclosure helps cancel any standing waves or resonances that form in the enclosure because of its particular dimensions. We recommend adding stuffing only if you need to, and only to sealed enclosures. It won’t make up for a poorly-constructed enclosure or an enclosure that’s built too small, but it can help make the enclosure play low frequencies with added emphasis.
It is possible to make your speaker think that it is in a larger box than it actually is by adding extra damping material, up to 75% of the entire enclosure volume. The general rule here is to add 1 pound of fill material (R-19 fiberglass, Dacron, or lamb’s wool) per cubic foot of enclosure volume.
Naturally, you can vary the amount of fill you use to fit your personal taste. If you want to gradually change the way a sealed box sounds, add damping material to the enclosure beginning with about 10% fill, and adding up to 75% of the total enclosure volume according to the way you want the enclosure to sound. Don’t compress the material, just loosely add fill to the enclosure. This works because the fibers of the material cause the sound waves to bend around them, slowing the waves down and taking longer to reach the enclosure’s sides. As much as a 15% change in box volume/response can be achieved by this method.
