Hello All, thought it was time for an update.
1) I do have custom rack shelves. 16GA steel, vent holes, powder coated chassis grey, very stable. Each kit comes with low-profile 3U feet and mounting hardware. There is no shipping charge if ordered with the multi-channel chassis amplifier.
2) Ostrey93 chose the Sanders Magtech. I have a customer's Magtech right now and am very impressed with it. Sonically, from the midrange up it is very close to the D-Sonic and I likely could not tell the difference in a blind test. I give D-Sonic the edge on bass extension and control due to 3x the damping factor. Also less than half the price and weight. Maybe Ostrey's girl friend had it right the first time .
3) XLR grounding: Marc Alexander is correct in post #1837
. The shield ground should tie to pin 4 on the input board connector and should float (no connection) on the XLR end. Pin 1 on this input board connector is labeled S GND. This stands for SIGNAL ground, not SHIELD ground. Both grounds tie together at 3 control points.
4) I only have 6 of the older style 3 channel chassis left. 3x400w was the maximum power in that chassis. I will use the multi-channel chassis for all 3-7 channel models after these are gone.
5) I am designing some new, lower powered models using smaller modules in the 250-500w power class. I propose to put 2 channels in my present mono size chassis, 4 channels into the stereo and 11 channels into the large multi. This will take a few months to get custom inputs and metal work.