The F1 Model 812 is a portable line array that allows you to change the vertical coverage pattern. We see that in the illustration here.
Well I thought the whole point of the FI 812 is to position the sound where it needs to be.
Yes, you're right. The control allows you to direct the sound where it's needed. Something that is not visible in the pictures, is that when you have an array of drivers aligned vertically, (8 in the F1 Model 812) you tend to get wide horizontal dispersion and limited vertical dispersion. From the F1 Model 812 Technical Data Sheet
100° H x 40° V (C-position). Turn that horizontally and you get
40° H x 100° V (C-position)
So by using the "C" position horizontally should enable more lateral coverage.
Here's your picture.
See attached change to your drawing, note the 8 speakers.
I understand what you're saying. However, if we mount the F1 Model 812 horizontally the difference between the Straight and C-Position is more like this.
Granted there is a limit on the vertical at this point but that can be focused.
The vertical will be 100°.
Thank you for your responses ST. Just trying to figure this thing out.
The pictures are deliberately fuzzy because the cutoffs are not as precise as the numbers suggest. The dispersion figures apply to frequencies above 600 Hz (those handled by the flexible array).
Even though the pictures are deliberately fuzzy, when I step outside the dispersion area suggested by the numbers, I really can hear the difference.