Clint Goss
New Member
Thought I had some idea how balanced cables worked, but then I hit this:
The ground pins on a balanced cable from my mixer to one of my near field monitors was not connected. Got a signal, but also significant HUMM. Should a speaker (Mackie HR824 Mk2) even produce a signal with no ground / shield connection?? Both Tip and Ring were connected ...
Any info / thoughts welcome!
** The Full Story - not really important to the question, but I've been at this for HOURS so felt the need to document it ...
I had a 50 ft balanced cable route through my drop ceiling to my near field monitors, and got significant HUMM. "Must be the halogen lights," I surmised and laid my cables on the floor for about two years. No Hum.
On a whim today I again tried the ceiling cable and this time tried turning off the lights. Still Hummed. Then I ran another 50 ft cable through the ceiling and got ... NO HUM ... Lights or No Lights. Tested the HUMMing cable and found that the ground pins were not connected.
*** END of Full Story
-Clint Goss
The ground pins on a balanced cable from my mixer to one of my near field monitors was not connected. Got a signal, but also significant HUMM. Should a speaker (Mackie HR824 Mk2) even produce a signal with no ground / shield connection?? Both Tip and Ring were connected ...
Any info / thoughts welcome!
** The Full Story - not really important to the question, but I've been at this for HOURS so felt the need to document it ...
I had a 50 ft balanced cable route through my drop ceiling to my near field monitors, and got significant HUMM. "Must be the halogen lights," I surmised and laid my cables on the floor for about two years. No Hum.
On a whim today I again tried the ceiling cable and this time tried turning off the lights. Still Hummed. Then I ran another 50 ft cable through the ceiling and got ... NO HUM ... Lights or No Lights. Tested the HUMMing cable and found that the ground pins were not connected.
*** END of Full Story
-Clint Goss