presscot
New Member
I have a pair of 7" a/d/s/ bass drivers. I would like to build the bandpass subwoofer systems. I acknowledge that a/d/s/ has the bandpass models of 7" bass driver available. They are a/d/s/ "MS1" or "MS1/U" (both have the same enclosure design but active and passive design differentiation). So I now have the external dimension of them. They are designed to have sealed chamber as front part and vented chamber as rear part. The bass driver is mounted on the dividing panel of front and rear chamber sitting inside the sealed chamber and facing towards the rear chamber. The ports are a pair of triangles which equipped to both lower corners of cabinet. The length of ports are equal to the length of sealed chamber because they use the ports as part of sealed chamber's wall. So the sealed chamber is actually a trapezoidal shape.
Here is the external dimension I have; H x W x D : 26 x 30 x 35 cm. And the triangular ports dimension which I don't have the actual values but approximated calculation by the photo software; H x W : 6 x 6 cm. The sub is tuned 100Hz cut-off frequency with 24dB slope characteristics.
How can I to know the ports length/sealed chamber length or front-rear chamber ratio ? Please help
Here is the external dimension I have; H x W x D : 26 x 30 x 35 cm. And the triangular ports dimension which I don't have the actual values but approximated calculation by the photo software; H x W : 6 x 6 cm. The sub is tuned 100Hz cut-off frequency with 24dB slope characteristics.
How can I to know the ports length/sealed chamber length or front-rear chamber ratio ? Please help