I just got the z-5500d, and was working fine for a few weeks. Then I went to attach the wires for the rear satellites. Next time I turned on the speakers, the sub had a distinct "hum" which is very audible to me and does not change volume - ever. Also, when I switch modes on my control panel, the sub makes a little "bump" noise.
This hum persists even when all satellites wires are removed from the sub, and plugging the system into a different circuit makes no difference.
Any ideas?
This hum persists even when all satellites wires are removed from the sub, and plugging the system into a different circuit makes no difference.
Any ideas?