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Discussion Starter · #1 ·
I upgraded all my speakers in 2018 pilot and added a powered sub and it is humming real loud intermittently.
Any suggestions?
 

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Try a shorter ground. 3 feet is pretty long for a ground. Did you scrape/chisel the paint away from the metal so the ground is good? Also is you power wire (8 gauge minimum hopefully) run on the opposite side of the car as your speaker cable or RCA ?
 

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Discussion Starter · #5 ·
Yes the wire came with sub and is 6 gauge and ground is on bare metal.
Also power wire is not near any speaker wires.
Someone mentioned possibly a bluetooth mic interference.
 
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