Yes, it's interesting to notice the wings make it work just like a wider cabinet, only better really.
The box was originally built for the larger Alpair 12. More cabinets than drivers had me thinking of ways to reutilize them. EL70 uses the same volume, and is tuned lower so the conversion is possible. So the dark wood is the fill for the original driver hole. Once together that insert was screaming out for an EnABL pattern to echo the one on the bezel, so Bernie added the big ring with small pieces of fir glued proud to match the main material in the box.
dave
Very nice, very nice (can you name the driver/more info?). Yellow/second ex. Looks like a "virtual horn" (real?) in action where the side of the wings is closer to the source than the front of the baffle in a straight line from the center of the driver, if this makes any sense (I have no other information but the standard design of horns).
In a manner of speaking, a baffle is a waveguide whether it reaches forward, backward, or is simply flat. Anyway, where a baffle travels smoothly outward for a time and then suddenly turns back (as the side of a box), this amounts to some fair diffraction.
As far as the driver in the sim, it is a fairly idealised model. It uses five weighted areas on the cone, for delay calculation purposes. I think it was 3-5cm but that's not too critical for this purpose of illustration. The model was designed to ignore directivity established by these regions so at all frequencies there is radiation travelling across the baffle.
As far as the driver in the sim, it is a fairly idealised model. It uses five weighted areas on the cone, for delay calculation purposes. I think it was 3-5cm but that's not too critical for this purpose of illustration. The model was designed to ignore directivity established by these regions so at all frequencies there is radiation travelling across the baffle.
- Status
- Not open for further replies.