same plan i've used for every stand i've built that was 2x4 or 2x6 construction. incredibly solid. i add a horizontal piece in the middle of the bottom frame to match the top. sheathing on the back and sides also prevents it from being able to tilt in either direction.

Thats the design I used also when building my stand ... before adding face frames etc

Heres the one I built.

http://www.canreef.com/vbulletin/sho...hlight=lojacks