intercom problems...headset with box

godd2

Member
my problem is that i had originally bought some Production Intercom boxes and headsets only to find out that this system does not work with the system in the building. so i exchanged the boxes for telex that work with our wiring. i didnt think that the headset would matter but apparently it does because when the PI headsets are used with the telex box i get a "knocking" sound that increases as volume goes up. is it they are not working together or do i have a different issue? if i use an old telex head set i dont get that knocking so this is why i think they dont work together but before i sent back the boxes i had used the headset with a telex and it worked fine but now it doesnt..i am very confused....
 

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