Lets say I have a bass driver and a CAD tells me this particular driver needs 60 liter, a line length of 180cm with a beginning surface area of 400cm2 and ending surface area of 270cm2.
Now, what would happen if I decrease the volume by decreasing the surface area to, say 300cm2 and 200cm2, but keep the same 180cm length? Isn't it the length that decides what frequency it's tuned to, or is the surface area equally important?
Now, what would happen if I decrease the volume by decreasing the surface area to, say 300cm2 and 200cm2, but keep the same 180cm length? Isn't it the length that decides what frequency it's tuned to, or is the surface area equally important?
Hi,
The CSA (cross sectional area) needed is related to the size
of the driver for for a given line length *, and if its not right
it simply won't work well, you cannot reduce it ad-hoc.
rgds, sreten.
* Its more complicated then simply driver size, related
to the drivers parameters, but very related to optimum
sealed box size for the driver, if that makes any sense.
The CSA (cross sectional area) needed is related to the size
of the driver for for a given line length *, and if its not right
it simply won't work well, you cannot reduce it ad-hoc.
rgds, sreten.
* Its more complicated then simply driver size, related
to the drivers parameters, but very related to optimum
sealed box size for the driver, if that makes any sense.
FWIW, IME it's related to a max flat vented alignment with a fudge factor to increase net Vb and why I still use the Margolis/Small HP calculator program from '81 to design the various ML-TL alignments.
The only vented alignment based on sealed that I'm aware of only works well over a narrow Qts range, so much too limited for me.
GM
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.