YAY! Amp Rack Porn!! [Sorry for the tilted picture. I think I was missing a shoe.]
Here's our current VerTec rack. I-Tech 5000HD (2) and I-Tech 9000HD (2) powering 4 boxes of JBL VT4888, using v5 presets. At the top, XLR in and out (two channels; each one goes down Ch1 and Ch2. However, the VerTec presets use Input Y, so only Channel 1 is needed. I have them both wired, though, as some times I need to use a random box count, and have a single rack Ch1 handles SL and Ch2 handles SR. So, both channels XLR loop through the amps.
Ethercon, 2 channels, to a gigabit switch mounted on the back side. 8 ports.
Motion Labs RackPack. L21-30 I/O to 4 circuits, each amp on its own circuit. The MF and HF amps share one leg of the L21-30; the two LF amps are each on their own leg of the L21-30.
Rock Hard Cases amp rack with disappearing lids. I am ordering them in a blue color; blue will be "our color" and that's how I am having all future cases built. These cases were measured to always fit 4-across in a 92" or 96" wide truck. Mark's good people. Not sure how you would order this case from him, tho, because it's one of those "hidden menu" items. Buddy of mine in Seattle went 9 rounds with Mark to get the build just right. He'll custom build anything though, and since he's less than 100 miles south of our shop, it's super convenient for us. Square corners. Never thought about them before, but I now prefer square over ball corners.