AudioEngine N22

Hum
Adding a new component such as your N22 amplifier can bring out hum or
buzz
that may not have existed before. Your first assumption may be that
something is wrong with the component but this is generally caused by a
"ground-loop"in your system. Consider these tips for possible solutions:
• First
try moving all components to the same electrical circuit or AC
outlet.
•
If the hum or buzz is still present, power off all gear and remove the
mini-jack and/or RCA audio cables to and from the N22 amplifier.
• Turn
the N22 back on and check for hum. If the noise is still audible try
plugging the N22 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
coaxial 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 dehumidifier
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 amplifier, 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.