I was wondering what wall mounts are recommended for the 50's. My center is located beneath my screen, and I would like to angle it up. Would the Definitive Technology Promount 90's work. I also thought I saw a post here that said something about the mounting against the wall would reinforce the midrange?
Thanks,
Matt

Any universal mount with an appropriate weight rating and supports a 1/4-20 threaded insert will work. The mount you mention would work fine.

Wall mounting of the 50/50C (or any speaker, for that matter) will reinforce the lower end of the midrange frequencies.

Hope this helps!

Thanks, I hope it doesn't change the sound quality too much. I'm torn between angling the speaker upward toward ear level or just leaving it. The speaker is going to be about 20-22 inches off the ground. I guess I'll play around with it a bit.

Wall mounting simply changes the sub/sat interface a bit. Playing around is the best bet to achieve the best results in your particular set up, but I would expect improvement if the center is appropriately angled to meet the ear-level recommendation.