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Interconnects, speaker wire, power cords. Ask the Cable Guys.

I ran into the SAME thing last night....

well, just about the same thing. I have a-c's on my speakers & just bought a pair of stereo subs & a-c's to go with them. For about a week they worked perfect, then recently an audible HUM came through. last night i had a chance to troubleshoot this and when i removed the a-c's & installed a bluejeans cable lc-1 sub IC the hum disappeared 100%.

So, then i went on a tear to see what cables of mine also eliminate the hum...only an old pair of Monster cable IC's worked. However, the a-c's did WAY better than Heartland Cable IC's & every other nice IC i own.

the anti-cable shield is not that affective, but much more effective than nothing at all. I tried an anti-IC in place too, much less hum than the a-c's but nothing at all like the BJC LC-1 or the crappy Monsters.

No clue how to help you, sorry, just venting & spilling my recent findings. Now i need to decide if buy a 2nd LC-1 or look for well shielded speaker cables...i think the sound is better through sp level inputs, but i can't tolerate HUMMMMMMMMM.............

If you find an easy tweak for the a-c's to eliminate this, please let me know. Somewhere here i read about people wrapping cables in CF.

Last, i've had a-c's as speaker cables for year, NO issue with hum in this location. my subs are like antennae's though...

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