It's because they are Helmholtz resonators. Using multiple ports is similar to a single larger port with the same surface area. Larger ports = longer lengths for any given enclosure volume and tuning frequency.
Why does port length increase when two ports replace one?
As per title,
Just wondering why two ports are required to be longer than a single port?
For instance if I tune a cab with a single 10" port, but the port velocity is too high and I add another port, these ports are then required to be 22.5" long each?
Just wondering why two ports are required to be longer than a single port?
For instance if I tune a cab with a single 10" port, but the port velocity is too high and I add another port, these ports are then required to be 22.5" long each?
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