Installation Manual

audio cables to and from the amplier.
• Turn the amplifier back on and check for hum. If the noise is still audible try plugging the
amplifier power cable into a different AC outlet.
• If the hum goes away while the audio cables are still disconnected, the noise is likely coming
from another component in your system. Connect each component back one at a time and the
one that causes the system to hum is likely the culprit.
• A common ground-loop source is from cable TV or satellite cables. If the hum or buzz persists
after trying the previous tips, disconnect the cable from your cable box, TV, or DVR and if the
hum goes away the cable is the cause. In this case you can get a ground-loop isolator from your
local electronics store. These are inexpensive and easy to connect inline with your video cable.
• Sometimes something as simple as a portable heater or dehumidier will add noise into your
wall wiring that could be picked up by your audio gear. A dimmer switch on a halogen lamp, a
wireless internet router, or wireless phone near the amplier, for example, could also all be
possible culprits.
The best overall solutions are to use an AC line filter, plug the unit into a different AC circuit, or in
the case of noise introduced by a wireless router, for example, move it further away from your
audio gear.