ExaSound e28 Owner's Manual download pdf (Page 15)

Isolating the Cable TV Ground

If you have a cable TV connected to your audio system, ensure that the TV cable ground is galvanically

isolated from the audio system ground. The TV cable ground, usually connected to the earth outside

your home, can have a significantly different potential than the audio ground. This condition can cause

audible hum. If you suspect this is the case, use a cable TV ground isolator just before the cable set-top

box or at the RF TV input.

When turning on and off your music system, the power amplifier should be the last

component to be turned on and the first component to be turned off. This prevents

power on/off transients from being transmitted to the loudspeakers.

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ExaSound e28 Owner's Manual Page 15