Horizontal and Vertical dispersion

[JBL 4645]

While reading the "Sam I am" thread I realized something, what is the (horizontal and vertical) dispersion of the JBL control 5 and control 1?

So I would like to know please what widest horizontal dispersion is and the narrowest Vertical dispersion is?

Thanks.

[Zilch]

What do the specs say?

Generally, dome tweeter = no control.

[JBL 4645]

What do the specs say?

Generally, dome tweeter = no control.

Zilch

The specifications don’t say anything, I was hoping someone, might have some insider information on this? Thanks.

[hjames]

Zilch The specifications don’t say anything,
I was hoping someone might have some insider information on this? Thanks.

No no - Zilch was pretty clear -

Generally, dome tweeter = no control.

Thats pretty straight-forward; when there is no structure around a dome, sound will generally travel the same in all directions. Think of a pebble tossed in a open pond - rings travelling outward equally.
When there is controlled dispersion, usually there is some kind of shaped horn or structural device. Think of the 2405/077 Slot tweeters, or the SAM horns array - each of them is tall and skinny, that slot-funnel shape is going to limit the expansion of the sound waves more in one dimension than in the other.

[JBL 4645]

I never thought of that ripples in water thanks Heather , so if I had a 18” ball of concrete and dropped into a lake, the ripples will be large is that what you’re saying??

[hmolwitz]

Went to Alaska and watched the glaciers calving, nice ripples when the big chunks dropped.