Bose F1 Model 812 with F1 Subwoofer

Discuss the Bose F1 Model 812 and F1 Subwoofer here.

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F1 812 - horizontal ceiling mount

In the process of shopping speakers for a live musician/band venue with audience capacity 50 to 75 plus.  Long room with stage in center of long wall, 70 long, 25 wide.  Looking for any feedback regarding horizontal ceiling mount of F1 812 (paired).

Thank you

edit: Subject changed - previously F1 812

Original Post

On a side note- I'd say you might want to add F1 Sub (or two) - 

I did an experiment when I first started using the F1 System. I played some hard rock through just a pair of 812s and then I added the F1 sub... What I found out was two things - the obvious... the bass was deeper and harder hitting, but the other was surprising to me... the limit light on the front would take longer to come on and I got more volume from the tops when the "with sub" light was on. The amount of extra head room was very obvious.

This is why I would recommend adding a F1 sub the mix if you budget allows...

Hi Enzo,

In the space you've described, I would mount the F1 Model 812s vertically. Otherwise, you may not have enough horizontal dispersion to cover the room.  When mounted horizontally, the F1 Model 812s have a horizontal dispersion of about 40°. when using the C-position for the flexible array.  

There are mounting brackets for the F1 Model 812 that allow for horizontal or vertical mounting. You'll have to call Bose directly to get them.

How high is the room?

Was there a reason you were considering the horizontal mounting? Aesthetics, ceiling height?

ST

Ceiling is 10 feet high.   thinking with the C configuration the sound could be better dispersed throgh the long and shallow room.  it is my understsnding that the system has a 100 degree horizontal dispersion when vertical.  would have thought it would be same horizontally and focused on seating area.

Hi Enzo,

When you turn the F1 Model 812 to a horizontal position (parallel to the floor) you get 100° vertical dispersion and 40° horizontal dispersion (with the flexible array in the C position).  If you mount the F1 Model 812s on either side of the stage that is centered on the 70-foot wall, you can expect much better coverage at the far ends of the room with the vertical orientation compared to the results than horizontal orientation.  

Does that clarify things?

ST 

Well I thought the whole point of the FI 812 is to position the sound where it needs to be.  So by using the "C" position horizontally should enable more lateral coverage.  See attached change to your drawing, note the 8 speakers.   Granted there is a limit on the vertical at this point but that can be focused.   

Thank you for your responses ST.  Just trying to figure this thing out. 

Attachments

Hi Enzo,

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.

F1 812 patterns Verticalpng

enzo posted:

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.

F1 812 Horizontal Enzo

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.

f1 horizontal straight and c

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. 

ST

Attachments

Photos (3)

A little more - and I'm not suggesting that you change where you put the stage - but:

If you put the stage on the 25-foot wall then you might want to limit the sound hitting the side walls. That's a situation where you could mount the F1 Model 812s on either side of the stage in the horizontal position. You would set the array so the sound is directed inward, and not at the side walls.   You would likely mount them high, and angle them down to avoid directing sound needlessly at the ceiling.

How are we doing now?

ST

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