1. Melntosh R649 External Sensor Installation Guide The R649 mounts in a standard one gang wall out let box and connections are made using a RGS59U or RG6 Coax Cable 300ft max with F Connec tors at both ends Connect the Coax Cable between the R649 and the F Connector on a McIntosh A V Control Center Preamplifier Multizone Control ler or Integrated Amplifier Up to four sensors can be connected in parallel When the R649 is used with a McIntosh A V Control Center that uses a Five Pin Terminal Connector connect the Center Wire to Pin 4 and the Shield to Pin 5 Note Before connecting the R649 to a McIntosh A V Control Center Preamplifier Multizone Controller or Integrated Amplifier make sure that the Main AC POWER Switch is in the Off Position or remove the unit s AC Plug from the AC Wall Outlet McIntosh Part No 040802