I am modeling enclosure for SICA 5,5 coax. Effective diameter of speaker membrane is ~100mm, overall basket size is ~148mm. Box will be printed with 3d printer, so almost any reasonable shape goes...
Currently thinking about drop shaped box. Modeling directions of the front baffle for it:
Of course, there is some space to make it even more narrow - ~160mm wide or on the opposite - even wider
Inside volume of the box will be the same in all cases.
Here are the approximate drafts in CAD and diffraction simulation in VituixCAD. All I can see is the difference in the frequency of the baffle step.
A - narrow
B - wider
C - very wide
I cannot see anything wrong in any of these choices, as it is a coax driver with recommended crossover frequency between 2,6 to 3,2kHz and the waveguide for the tweeter is already what is and I cannot build BSC into crossover as it is already bigger than I need.
Probably will 3D print 1 mockup of final box, but not all three - too expensive and time consuming.
Which baffle direction would you suggest?
Currently thinking about drop shaped box. Modeling directions of the front baffle for it:
- A: More narrow, ~170mm diameter, which is (IMO) reasonable width to get some rounding and still be pretty minimal
- B: Wider, ~220mm diameter
- C: Unreasonably wide, ~280mm - a bit of Snell Type A philosophy
Of course, there is some space to make it even more narrow - ~160mm wide or on the opposite - even wider
Inside volume of the box will be the same in all cases.
Here are the approximate drafts in CAD and diffraction simulation in VituixCAD. All I can see is the difference in the frequency of the baffle step.
A - narrow
B - wider
C - very wide
I cannot see anything wrong in any of these choices, as it is a coax driver with recommended crossover frequency between 2,6 to 3,2kHz and the waveguide for the tweeter is already what is and I cannot build BSC into crossover as it is already bigger than I need.
Probably will 3D print 1 mockup of final box, but not all three - too expensive and time consuming.
Which baffle direction would you suggest?
Last edited:
JanRSmit, why?
The only thing I can see is the higher baffle step frequency. but the problem range according to various posts here of this driver is ~3kHz region, which is not possible to adress due to coax nature of the driver and its size - ~150mm basket
I am not opposing your opinion, just need more understanding...
