Dispersion panels question


I'm looking to put some dispersion panels, as opposed to absorbsion panels, behind my speakers to disperse reflected sound.

Primarily thinking of using long runs of wood with a triangular cross section.

Should I used a vertical pattern, or horizontal patterm, or some of each?

Or is the pyramid pattern the best?

Hoping to make the image deeper :-)

Thanks
williewonka
Lustformusic - I did have a image width issue which I fixed with a couple of screens in the corners of the room. the image now exceed the width of the room on well recorded tracks

Unfortunately the front-to-back image seems a little compressed, in that it does not always extend back beyond the wall that is behind the speakers (only sometimes on really well recorded tracks)

A couple of audio stores have huge rooms with 5-6ft of space behind the speakers - their image is superb - that's my goal

Thanks for the tips.
Williewonka, my speakers are 9 feet from the back wall so there is plenty of depth but the imaging was a bit diffuse. This sharpened up nicely with the addition of extra clock between my server and Dac so it can be assumed that phase and timing are a contributer .
Depending on the speaker , I've heard improved depth by positioning the speakers closer together with no toe in but you probably tried this.
The addition of a pair of well dialled in subs can also be beneficial towards your goal. Not trying to tell you how to suck eggs but perhaps you answer is a combination of all the above depending. Regards
Check out the Ethan Winer Forum section on audioasylum. Tons of discussion on this & related topics. Also DIY plans etc. Cheers,
Spencer
"10-21-15: Sbank
Check out the Ethan Winer Forum section on audioasylum. Tons of discussion on this & related topics. Also DIY plans etc. Cheers,Spencer"

If you can find some old issues of The Audio Perfectionist Journal, they give detailed instructions on how to make acoustic panels yourself. It was a really good article, and it was really easy to do. I don't know what happened to mine or I would post them for you.

Also, I was in Guitar Center a couple of weeks ago, and they had acoustic panels on display. I don't remember the prices exactly, but they were very reasonable. They have a really good return policy, so its pretty risk free to try them.
Thanks guys - I'll look into the links posted above.

Lustformusic: 9ft - WOW! The "more space" behind will have to wait until I move in a couple of years, but I was glad to hear the dispersion panels contributed to the image quality.

ZD542: I decided to look into a dispersion approach because I have read that absorption panels can deaden performance unless you are really careful, however in some situations it is required - the two I installed initially were very successful at eliminating an echo behind the speakers.

Sbank - thanks for the pointer - I will check it out for sure.

Thanks for all the input