Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems Adding a Velodyne sub to a SL DSP/861v6 setup

You should only have one cable going from the 861 to the sub and it should be output #4 from OA18 #1. The config program is only telling you what pair to use and you need to "just know" that 3 is center and 4 is subwoofer.

Regardless, the OA18s should be putting out analog signals and you should be getting something out of your current setup. Are the cards firmly in place?

I would try changing the config file to stereo subs and moving the cable to OA18#2, output 1 or 2. Both would be live with a subwoofer feed. This is only to test it. Then put it back to mono sub and move back to OA18#1 output 4.