gnuuser
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while its not a security system I recently checked out the power speaker in my chiefs siren in his vehicle. it was not working so i thought first check the fuse, fuse ok! metered output from control unit and had sound signal.
amplifier working ok as well.
placed my hand on the top of the speaker and about got my ears blasted off.
apparently the shell of the speaker needed to be bonded to the frame.
cleaned up the bolt holes and installed stainless bolts and everything works. still puzzling though
speaker wires had both pos and neg
further inspection found the neg wire was broken at the speaker terminal, so it started working when the frame bond was cleaned.
(I would have found it with a continuity test but we had to go on a call right then)
stripped and re-soldered the neg wire and shes good to go.
speaker is old so he's going to order another one and I'll be installing it.
amplifier working ok as well.
placed my hand on the top of the speaker and about got my ears blasted off.
apparently the shell of the speaker needed to be bonded to the frame.
cleaned up the bolt holes and installed stainless bolts and everything works. still puzzling though
speaker wires had both pos and neg
further inspection found the neg wire was broken at the speaker terminal, so it started working when the frame bond was cleaned.
(I would have found it with a continuity test but we had to go on a call right then)
stripped and re-soldered the neg wire and shes good to go.
speaker is old so he's going to order another one and I'll be installing it.
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