@erik_squires
"your writing confuses beaming with lobing and compression"
No it does not. I am just talking about trade-offs between several related factors.
One way to solve compression problems from a driver with inadequate SPL or not enough linear dynamic range from the drive motor is to employ a larger diaphragm - this is why folded ribbons are larger than dome tweeters because they don't have as good linearity at higher SPL. The downside of a larger diaphragm is initially beaming (at lower frequencies) and eventually lobing at much higher frequencies.
Beaming is related to lobing in that the initial beam is actually one lobe that is directly forward of the driver and this eventually becomes narrower and narrower as frequency increases. Also additional side lobes appear as frequency increases. This is all interrelated to the problem of using to large a transducer or diaphragm.
"your writing confuses beaming with lobing and compression"
No it does not. I am just talking about trade-offs between several related factors.
One way to solve compression problems from a driver with inadequate SPL or not enough linear dynamic range from the drive motor is to employ a larger diaphragm - this is why folded ribbons are larger than dome tweeters because they don't have as good linearity at higher SPL. The downside of a larger diaphragm is initially beaming (at lower frequencies) and eventually lobing at much higher frequencies.
Beaming is related to lobing in that the initial beam is actually one lobe that is directly forward of the driver and this eventually becomes narrower and narrower as frequency increases. Also additional side lobes appear as frequency increases. This is all interrelated to the problem of using to large a transducer or diaphragm.