Port Length Calculator
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Port Length Formula
The port length formula is:
\[ L = \left( \frac{2.356 \times 10^4 \times D^2 \times N}{V \times F^2} \right) - (k \times D) \]
Where:
- L is the port length (in inches)
- D is the vent diameter (in inches)
- N is the total number of ports
- V is the volume of the box (in cubic feet)
- F is the tuning frequency (in Hz)
- k is the correction factor, typically 0.732.
Port Length Definition
Port length refers to the necessary length of the vent (port) in a subwoofer enclosure, crucial for tuning the subwoofer to the desired frequency.
How to Calculate a Port Length
- Determine the vent diameter (D) in inches.
- Determine the total number of ports (N).
- Determine the box volume (V) in cubic feet.
- Determine the tuning frequency (F) in Hertz.
- Calculate the port length using the formula provided.