The F1 subwoofer is a stand-alone active subwoofer with multiple inputs and outputs.

Connect your source to the F1 subwoofer line-in, then run the line-out from the subwoofer to your L1 Pro8 (overkill, but what fun!), Pro16, or Pro32 which each have multiple input options.

Alternatively, the Pro8, Pro16 and Pro32 each have line outputs, so you can connect that directly to the F1 subwoofer input.