Cabinet is only 21 5/16 deep.
Have an amp that is 19' deep.

Will be using all the pre outs and ins on the 990, which with stiffer cables is problematic due to space constraints.

All cables will exit left from 990, out thru 2
3/8 " holes and re-inter the cabinet thru 2 3/8 to the respective components There are (6) 2 3/8 holes, cabinet is divided into 3 section, left and right sections for components, center for Center speaker and lower drawer.
The two outside compartments are 4" deeper than center compartment..
There is a removable back panels on both sides , the holes for the cables are on the sides near the back.
Another option I am looking at is making my own , but still need help on choosing a good flexible cable compatable with the comnectors.