| Bandpass Box Calculator determines the front and rear chamber enclosure depth
using entered width and length values.
Notes Before Using Box Calculator
 |
One of the faces of the enclosure will need to
have enough surface area so the speaker and ports (vented and
bandpass) can be installed. For example, a 15" driver
will not fit in an area (Width X Length) of 10" X 10".
The speaker's diameter is too large. Dimensions
will need to be constrained to make the driver/ports fit into
the box. |
|
When designing a vented or bandpass enclosure note the length
of the port. Port length can become too long when using
large diameter ports. For example, a 24" port will
not fit into a 10"X10"X10" box. It will
stick out of one of the sides. If this occurs, constrain
dimensions. |
|
Try not to place the speaker on the very edge of the enclosure.
If possible, keep the speaker and ports three to four inches
away from the edges and walls. |
|
In summary, plan where you are going to place your speakers
and ports. It's no fun to find out three hours into a
building a box that your speaker will not fit. |
Parameters:
Vf:
|
Front chamber volume |
Vr: |
Rear chamber volume |
Port Volume: |
Port volume |
Addl. Vf: |
Additional volume for the front chamber |
Addl. Vr: |
Additional volume for the rear chamber |
Total Volume:
|
Volume of the front chamber, rear chamber, port and additional
volumes added together. This will be determined when the
Calculate button is pressed. |
Total Vf: |
Volume of the front chamber and additional front chamber values |
Total Vr: |
Volume of the rear chamber and additional rear chamber values |
Length: |
Length dimension |
Width: |
Width dimension |
Front Depth: |
Front chamber depth dimension |
Rear Depth: |
Rear chamber depth dimension |
Instructions:
Length and width are user defined parameters. These
values will need to be entered by the user to accommodate the speaker
and port. The Calculator will use these values with the volumes
of the front and rear chambers to determine the front and rear depths.
|
Determine the volume of the box |
|
Select Box Calculator from the Box Calculator menu. Note how
front chamber, rear chamber, and port volumes from the previous
screen are transferred to the Box Calculator screen |
|
Enter any additional volume. Additional volume will
include any space taken up by the speaker structure, braces,
or anything else that takes up space in the enclosure |
|
Set the length and width dimension the fit the speaker and
port |
|
Click the Calculate button to determine the dimensions. |
|
