We were clearing out the recording studio yestday and found two floor monitors that are aparently drama departments, yay. I tryed them out with an iec power cable, a guitar cable to conect the linking monitor and an xlr cable going to a mic. There was an awefull hum going on, i made sure the xlr wasent next to a power cable but it still happend, i then took the jack out to just run on one monitor and it still humed, it wasent turned up to high about as high as a loud hi fi system.
What could this be?
What could this be?