Crossover

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Hello, I have hired a Peavey Hisys 4 PA system. I have been given a crossover for the first time, I have wired it up fine but there is no sound, not a hum! The signal is passing through teh mixing desk, there is sound from the monitors.
I am panicing as the bands are due to sound check in 30 mins!
Is there any advice you could give to try and make this work?
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.