If an open baffle speaker with large baffle has for example a +/- 45deg dispersion with the drivers horizontally centered, would that change if you moved all drivers over as close to the edge as possible? Or would the dispersion become asymmetrical? Something like -35/+55 deg?
Hi,
OB / dipole has "usable bandwidth" from the dipole peak and down. On the examples below this would mean bandwidth from about 400-500Hz and down the response is nice and clean to all directions, while above this the response gets erratic due to edge diffraction and then the driver beaming, and for example magnet / basket affecting respone behind.
So, above "dipole peak" is diffraction ripple, and other directivity issues emerge and it's just not as "clean" bandwidth to use, but you could if you wanted to. Thus if we assume we only use from dipole peak down, the offset doesn't do anythin else than shifts / shapes the dipole peak a bit. Directivity changes above this some, due to edge diffraction being asymmetric, but this is already the no bueno zone, and has very limited bandwidth of this phenomenon so not so usable thing.
You should study this yourself with any sized baffles and drivers to get insight how it plays out.
OB / dipole has "usable bandwidth" from the dipole peak and down. On the examples below this would mean bandwidth from about 400-500Hz and down the response is nice and clean to all directions, while above this the response gets erratic due to edge diffraction and then the driver beaming, and for example magnet / basket affecting respone behind.
So, above "dipole peak" is diffraction ripple, and other directivity issues emerge and it's just not as "clean" bandwidth to use, but you could if you wanted to. Thus if we assume we only use from dipole peak down, the offset doesn't do anythin else than shifts / shapes the dipole peak a bit. Directivity changes above this some, due to edge diffraction being asymmetric, but this is already the no bueno zone, and has very limited bandwidth of this phenomenon so not so usable thing.
You should study this yourself with any sized baffles and drivers to get insight how it plays out.
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No.
Dispersion Narrows when the wavelength becomes smaller than the driver diameter.
Why we crossover to smaller drivers for higher frequency.
Dictated by the moving part not the non moving part.
Offset will flatten the response.
No distance should be equal vertical and horizontal for flatter response.
Why example above isnt optimized
Vertical distances are still the same.
Dispersion Narrows when the wavelength becomes smaller than the driver diameter.
Why we crossover to smaller drivers for higher frequency.
Dictated by the moving part not the non moving part.
Offset will flatten the response.
No distance should be equal vertical and horizontal for flatter response.
Why example above isnt optimized
Vertical distances are still the same.