\rI am assuming you have two pairs of RS850 connected to the MX880. One scenario is to have one pair for zone 1 and another for Zone 3. That would leave you with Zone 2 and zone 4. The FORZA6S would be an ideal match with the RS850. Both zone 2 and 4 could power two pairs of FORZA6 Garden landscape Pendants. All four zones are rated at 4-ohm stable. We only recommend driving some of the four zones at 4-ohm, but the max recommendation is to drive the Odd zones at 8 ohms (powering a single pair of RS850) and utilize the Even zones at 4 ohms (up to two pairs per zone). Or drive four pairs of the RS850, one pair per each of the four zones. You have a lot of flexability, it depends on your application.
TimL/3-23\r