OK...here goes. These were drawn up at work between calls
I posted the pic with 12 LNB's to get the jist but I now see I goofed....should only be 11
-on each LNB (dual) put a 2x4 multiswitch on it. This gives 4 outputs
-run a cable from the first 4 LNB's to a 4x1 diseqc and hook that output to one of the ports on the 8x1
-run the other lines to the ports on the 8x1
repeat for the other receivers
again, this only works if your receiver has Diseqc 1.1 protocol.
The next two will work with Diseqc 1.2 protocol (setting it up as a motor)
The 2nd option is to run the LNB lines to 2 8x1 switches and combine those 2 with an ecoda 22k switch. The ecoda will pass diseqc commands. I have it this way but for 4x1 switches.
Third option is scrap the 2x4 multiswitches and get 4x4 switches. Run 2 LNB's into each of the multiswitches and hook an output from each multiswitch to a 8x1 diseqc. This gives you 16 LNB's
If your receiver does 1.1 its MUCH easier because no fussing with the motor
Hope this helps