AV Furniture - Depth

Please see this link >>>

http://www.salamanderdesigns.com/resource/whatmakesgreatcabinet

Salamander Designs must be expensive but they do offer regular audio cabibers and custom designs.  

As Eric notes above, heat could be a problem so an open cabinet is suggested. 

Not exactly cheap but wooden, looks great, open design and over 22" deep
http://coreaudiodesigns.com/products/component-racks/

Check out AVC (Audio Vibration Control), he goes under the name of woodsage on the Gon.

You could also try what I did, which was to source out a local carpenter and have him make something like this.

If you scroll down about halfway you’ll see a mid century style boxer media stand. It’s what I had made for me and I couldn’t be happier.
It’s 1" thick maple all around with African Padauk wood inlays and metal hairpin legs. Incredibly solid and sturdy and will fit into practically any decor.

I always like to use local talent and I even had him make some console tables in the same vein (they are further down).

Good luck and all the best,
Nonoise

I use a Salamander cabinet with the extended metal ventilated back added to it and it gives me about 23" of depth and the shelving is adjustable to any position, up or down, to keep up with any changes in your gear over time. Now I spent about $1,700.00 up front for the cabinet but it has been an absolute great purchase and have added 2" maple shelving from Timbernation replacing the original shelves. Go to my Virtual System and take a look to get an idea. For what it is worth Timbernation has always satisfied my needs with anything I have asked of them in craftsmanship and price, sometimes slow to respond but worth the wait.