Make the box 35" wide x 22" tall x 13" deep. Use two 4" diameter ports that are 5-1/2" long. Use 3/4" or 18mm Baltic Birch or MDF. Brace well using cross-braces (front-to-back and side-to-side) on each side of the woofer along the 35" dimension. The braces can be made using scrap cut from the panels.
If i select the box dimension
35 tall
22 wide
13 deep
Is it still fine
Dus to space in room
Make the box 35" wide x 22" tall x 13" deep. Use two 4" diameter ports that are 5-1/2" long. Use 3/4" or 18mm Baltic Birch or MDF. Brace well using cross-braces (front-to-back and side-to-side) on each side of the woofer along the 35" dimension. The braces can be made using scrap cut from the panels.
The dimension 35wx22tallx13deep is inner volume ??
And i also can use these dimensions too
30 wide
20 tall
20 deep
?? m i right
Wayne Parham Messages: 18783 Registered: January 2001
Illuminati (33rd Degree)
The (35" x 22" x 13") dimensions I gave you were inside dimensions. My dimensions create a box with 5.7ft3 internal volume. The additional size makes up for displacement from the parts inside.
Your (30" x 20" x 20") dimensions make a box with larger internal volume, 7ft3 to be precise. That 2ft3 is more than would be displaced by the parts.
You could go with (30" x 19" x 17"). That's pretty close to the volume of my original dimensions.
It doesn't have to be exact. Thermal changes at various power levels make more difference than a small volume or tuning change in the box. But still, try to keep it within +/- 10% of 5ft3. Otherwise, you should modify the ports accordingly.
The (35" x 22" x 13") dimensions I gave you were inside dimensions. My dimensions create a box with 5.7ft3 internal volume. The additional size makes up for displacement from the parts inside.
Your (30" x 20" x 20") dimensions make a box with larger internal volume, 7ft3 to be precise. That 2ft3 is more than would be displaced by the parts.
You could go with (30" x 19" x 17"). That's pretty close to the volume of my original dimensions.
It doesn't have to be exact. Thermal changes at various power levels make more difference than a small volume or tuning change in the box. But still, try to keep it within +/- 10% of 5ft3. Otherwise, you should modify the ports accordingly.
Well here for port 3-1/2" and 4-1/2" pvc pipes are avilable can u plz tell me the port size in these sizes
Or i will make square shape with mdf wood thanks
I think square shape with mdf wood will be best
Wayne Parham Messages: 18783 Registered: January 2001
Illuminati (33rd Degree)
You can make two ports, each that are 3-1/2" square and 5-1/2" long. Dimensions are internal. Length is from the front of the baffle panel to the termination inside.
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