Use Anchor Audio's SC-100NL 100.0' (30.48 m) Speaker Cable with Neutrik Speakon Connectors to join speakers across a large auditorium, stage, or outdoor space. (Multiple speakers are recommended to spread sound evenly to reach an entire audience.)
If you have Anchor's XTREME Sound System, connect one end of the SC-100NL to the Companion Speaker Output of the XTREME. Next patch the other end into a XTR-6001 Unpowered Companion Speaker. The SC-100NL supplies power and signal to drive the XTR-6001. Generous cable length gives you the flexibility you desire for large venues.