Originally posted by Renn:
Apparently he didn't know what he was doing because it has never worked properly. Every time it rains, the system does not work.
well, you've obviously got cabling faults and water ingress. Go right back to the start and sketch out a diagram of every piece of equipment and length of cable. Disconnect every piece of equipment; test amplifiers etc on the test bench, test speakers in situ with a local (battery powered) test amp.
Megger every length of cable core-core and core-earth for insulation faults, shorts and open circuits.
Then reinstall the workinbg equipments in sections, working to the manufacturer's instructions, testing as you go.
https://www.valcom.com/techsupport/knowledge.htm
