Benefits of a wideband driver for off axis decay

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Posted by akhilesh [ 129.244.120.97 ] on October 05, 2005 at 17:21:47:

Hi Everyone,
I was reading an article in Sensible Sound in which they review the new Bang & Olufsen Beo lab 5 (yes this is apparently totally different from the usual schlock B&O produces).
In that they talk about the importance of off-axis frequency decay, and how its important for things like imaging and spaciousness.

This got me thinking of the following question:
What do we think a wide band driver would do? Usually, it leads to beaming, so there are some frequencies over which it will offer less decay than others. In other words, a driver that goes from say 100 to 5000 Hz, and is around 8" will beam around 1500 Hz plus, and the beaming effect will get more pronounced I think as the frequency increases. How would this impact the frequency rolloff off axis? IS a wide band driver a good thing or a bad thing , from the perspective of off axis frequency roll off patterns?
-akhilesh

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