•
In case there is hum or ground noise, check that the RCA/XLR switch is in the correct position for the type of
connection being used.
•
Ensure that the preamplifier or any source components are not producing hum by setting the preamplifier to a
MUTE or Standby setting.
•
The design of the REF500
S
reduces the chance for ground loop induced hum, but we still recommend
using shorter interconnect cables to the preamplifier. Connect all power cables to a common outlet box or
power conditioner unit to reduce the possibility for ground current noise being induced into the audio signal
path.
•
If you choose to power your source and preamplifier components from a different AC supply than used for the
REF500
S
amplifiers, we recommend that you use a high quality balanced XLR cable driven from a true
balanced XLR preamplifier output.
•
We do not recommend
that you resort to ‘cheater plugs’ or some other means to disconnect the power
ground from the REF500
S
as this may lead to dangerous operation and void the warranty.
•
The small blue LED lamp indicates that power is connected to the REF500
S
and that the power switch is in
the ON position. If the amplifier detects a fault or short circuit in the output connections, it will go into a
protection mode and stop playing. If this occurs toggle the power switch to the OFF position and check the
speaker cabling to ensure that no speaker output is either shorted together or connected to a ground. When
you are certain that the loudspeaker cabling is correct, power the unit ON again, check that the blue LED is lit
and that music will play.
•
There is an internal fuse protection on the REF500
S
. If the power switch is in the ON position, the power
cable is connected to a functioning power outlet at the correct voltage and the blue LED is not lit, this
indicates that the internal fuse may have blown. If this occurs contact your dealer, distributor or Bel Canto for
service. There are no user replaceable fuses or other parts. Opening the chassis will void your warranty.
Summary of Contents for e.One REF500s
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