Diffuse Front Wall? Absorb rear wall?

@meerzistar. I ordered mine from ATS on Amazon. Each diffuser is about 8" deep and scatters from 325 Hz up to 3000. In the past few days, I've added more ASC tube traps and they really clean up the strident sounds. What really helped was a pair of 16" diameter traps 4' tall, one in each front corner (w/smaller diameter traps perched on top so the whole column goes up to the ceiling. Then, more tube traps on the first order reflection points against the side walls. So, now I have the best of both worlds, ambiance and timbre. Here's were you can find more info about the diffusers. http://www.atsacoustics.com/acoustic-diffusers.html

I have been experimenting with different DIY diffusers. Having a workshop at my disposal and endless lumber scrap supply if I'm not happy with a design I move onto another. I'm currently in the process of a 2x4' cherry/mahogany/maple/oak horizontal placed diffuser with the boards running upright. Depths range 1 1/2"H with 1/2"D being the shallowest glued and nailed to birch ply. After extensive prepping I'll be applying Watco Danish oil to further raise WAF. I intend to place this between 35" floor monitors front and centre a foot lower than a large LCD and 1' above floor. I'm optimistic.  I also plan on some 6" deep light maple diffusers similar to the ones ATS sells  

Rockadanny please remember manufacturers talk to the public(i e customers) with a view to sales;wouldn't you agree? Pete

ptss - thank you for the good advice. yes, one does need to keep their bs radar on full scan whenever speaking with a manufacturer, dealer, or fan boy. that is for sure. GIK Acoustics and Brian Pape have helped me resolve some past issues so I am fairly confident in their assistance this go around. But still, I do proceed with caution.