I ran regular
cable between my receiver and amplified subwoofer.
Approximately a 70ft run
through the
house. Avoided running in parallel with the power lines but it
is about 6" away
from an
electrical outlet.
No cable
plugged into sub, no hum.
Cable plugged
into sub but not into receiver, loud hum.
Plugged in a
ground loop isolator device and hum dramatically reduced.
However, so was
the signal to
the sub. To the point it might be blocking it completely. This
was a very cheap
($9) device
from Amazon.
Swapped with
shielded Cat5e cable from Shireen. Same results.
Any idea how
to fix this? Get better shielded cable? Better isolator?
