Consider this a dumb noob question please. I’m still in the planning stages of my first “real” AV system. Here’s what I got down on my spreadsheet:

Outlaw 990/7125 combo
B&W 603S3
B&W LCR600

Due to my odd room shape, I won’t be adding surround speakers any time soon (if ever). Here’s my question, I’d like to add an SVS cylinder sub 20-39, do I need the powered model 20-39pci or can the 7125 also drive a non-powered model 20-39cs?

Thanks a bunch.