Umbra
Hobbyist & CA Tenderfoot
I've got two Rockford Fosgate Punch He2s (12") in a shoddy sealed enclosure I was given. The spec sheet for the subs lists the ideal sealed volume at 1.25 cubes (each) and the box is apparently 1.64 cubes w/o sub displacement (I thought it was just under two, I just redid the math and I'm shocked).
Suffice to say I need a new box. I wanted to try ported, but now that I realize just how small the box is, a proper sized box should give me a dramatic increase anyway. I'll leave that as a fallback, but I digress.
I want to build a box for the trunk of a 02 Hyundai Elantra. The problem is it has an odd shape, so I've designed a hybrid box that's part wedge, part rectangle and I wanted some experienced opinions.
Here's the trunk, you can see what I've named "the cave" at the back:
and here's my design:
That's the view from the left side. Imagine that sliding into place and spanning 38" across the middle of the trunk.
I try to make efficient use of the back of the trunk by filling up the cave with a wedge shape, but then continue forward with a box as tall as I can make it so I get my desired volume.
Each sub calls for an ideal 2 cubes each for ported. Here I've got 4.27, leaving room for roughly .14 for the displacement of the subs and a little for the aero ports I'd like to make out of PVC pipe using the heatgun method for flaring. By adjusting the depth of the "square" part of the box I can add or subtract a bit in case I need to stick some bracing in there or something.
Mainly I'd like to know if such a design would work, or if it fails do to acoustic principles beyond my comprehension. I'd also like the know what size aero ports I need and all the measurements that go with them because I know very little of them. I'd also like to know what would be a good frequency to tune to. It says 35hz at the bottom of the page I linked. From my understanding that's a good balance between SQ and SPL. When it comes to bass heavy music I listen to more Dubstep, DnB, EDM, etc. than rock or more traditional genres. So somewhere in the 32-35 range? Also bracing. I'll probably need some, but where and how?
Thanks for looking. Any help would be fantastic. After making this thread and realized just how small the box I have is I'm itching to fix it.
Suffice to say I need a new box. I wanted to try ported, but now that I realize just how small the box is, a proper sized box should give me a dramatic increase anyway. I'll leave that as a fallback, but I digress.
I want to build a box for the trunk of a 02 Hyundai Elantra. The problem is it has an odd shape, so I've designed a hybrid box that's part wedge, part rectangle and I wanted some experienced opinions.
Here's the trunk, you can see what I've named "the cave" at the back:
and here's my design:
That's the view from the left side. Imagine that sliding into place and spanning 38" across the middle of the trunk.
I try to make efficient use of the back of the trunk by filling up the cave with a wedge shape, but then continue forward with a box as tall as I can make it so I get my desired volume.
Each sub calls for an ideal 2 cubes each for ported. Here I've got 4.27, leaving room for roughly .14 for the displacement of the subs and a little for the aero ports I'd like to make out of PVC pipe using the heatgun method for flaring. By adjusting the depth of the "square" part of the box I can add or subtract a bit in case I need to stick some bracing in there or something.
Mainly I'd like to know if such a design would work, or if it fails do to acoustic principles beyond my comprehension. I'd also like the know what size aero ports I need and all the measurements that go with them because I know very little of them. I'd also like to know what would be a good frequency to tune to. It says 35hz at the bottom of the page I linked. From my understanding that's a good balance between SQ and SPL. When it comes to bass heavy music I listen to more Dubstep, DnB, EDM, etc. than rock or more traditional genres. So somewhere in the 32-35 range? Also bracing. I'll probably need some, but where and how?
Thanks for looking. Any help would be fantastic. After making this thread and realized just how small the box I have is I'm itching to fix it.