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SYSTEM NOISE CONSIDERATIONS
AC grounding becomes critical when con-
necting high performance audio components.
When mixing and matching audio compo-
nents, each with their own ground potential, a
low frequency hum may occur in one or both
speakers. This often occurs when introducing
a new component into a system.
If there is a low frequency hum emanating
from the speakers when the KAV-150a
amplifier is placed into the system, follow
these simple troubleshooting steps before
contacting your authorized KrelP dealer, dis-
tributor, or Krell®:
1. Check all input and output connections,
making sure they are of sound construc-
tion. With the amplifier off, remove the in-
=
terconnect wiring and turn the amplifier
on. If the hum disappears, turn the ampli-
fier off and reinsert one of the intercon-
nect cables. Then turn the amplifier back
on. If the hum reappears with one or both
interconnects reinserted, there may be a
defective cable. Have the interconnect
cabling checked before proceeding.
If the interconnects prove to be sound,
you may be experiencing a ground loop.
This can often be easily eliminated. Con-
tact your authorized KrelP dealer, distrib-
utor, or Krell
®.
KRELL® KAV-150a
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