using Velodyne sub in 2-channel setup?

the velodyne dls is a powered sub. If I am looking at it correctly, it has rca's IN L/R and OUT L/R. Then it has L/R speaker terminals. I'm not sure I follow Zman. How would I use speaker hookups to sub and still get power to my floor speakers from amp. I am using rebuilt H/K 16a to power focal 918's.

What Zman was trying to say was use the Velodyne as a center speaker . use the hi level inputs and dont run the Velodyne's output. Cross the Velodyne lo pass as low as you can for those speakers.

What Zman is describing is the way I have my sub hooked up. A second set of speaker cables is hooked to the same speaker terminals as the main speakers. It sounds all wrong, but the input impedance through the sub's speaker (high level) inputs is high enough that it isn't a problem. Then, as Lewhite says, set a low frequency on the sub's crossover.

so if i use high level inputs, the sub will still use the built in amp? I will end up with 2 sets of speaker leads coming out of my power amp? (parallel)

If I use the high level input, will the crossover still filter out low frequency from other speakers?