How do i convert the length on a square or circular port calculated in winisd or similar program to the length of four triangular ports?
What i want to do is to use B&C's new 21inch sub but recalculate the tuning to 32Hz and recalculate the triangular portsizes to 17cm instead of the suggested 20cm so the boxsize will fit better with D&B Q-sub.
http://www.bcspeakers.com/suggested.php?id=0000000011
What i want to do is to use B&C's new 21inch sub but recalculate the tuning to 32Hz and recalculate the triangular portsizes to 17cm instead of the suggested 20cm so the boxsize will fit better with D&B Q-sub.
http://www.bcspeakers.com/suggested.php?id=0000000011
you do not need to do any recalculation.
Make the 4 ports the same area as the single port.
The length remains the same.
However the volume used by four separate ports will probably end up larger than a single port and this will require the box to be slightly larger to compensate.
Make the 4 ports the same area as the single port.
The length remains the same.
However the volume used by four separate ports will probably end up larger than a single port and this will require the box to be slightly larger to compensate.
AndrewT said:you do not need to do any recalculation.
Make the 4 ports the same area as the single port.
The length remains the same.
Are you really sure?
I was under the impression that the area of the portsides where the air moves much slower than it does in the middle, did affect the size of the port?
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