3
OPERATING PRECAUTIONS
Make sure the AC mains voltage is correct and is the same as that printed on the rear of the
amplifier. Damage caused by connecting the amplifier to improper AC voltage is not
covered by the three-year US warranty. Make sure the power switch is off before making
any input or output connections.
It is always a good idea to have the gain controls turned down during power-up to prevent
speaker damage if there is a high signal level at the inputs.
CONNECTING INPUTS
Input connections are made via either the
3-pin
XLR
-type connectors (Figure1) or
6.3mm
sockets
on the rear side of the amplifier.
CONNECTING OUTPUTS
Load can be connected using banana plugs or spade lugs. A black binding post is considered
“
COM
”
, while the three red binding posts are considered
“
hot
”
, and the voltage is
38V
（
different
from the model
）
,
70V
, and
100V
.
Note:
Never connect the
“
hot
”
terminals together.
When connecting load
（
speakers
）
, it is better to use one pair of output terminals only.
If the PROT Led goes on steadily while power has been turned on and signal has been fed, there
must a trouble of output shorted. Please turn it off and correct the trouble then turn it on again.
ground signal
1
2
3
Figure 1
3-pin XLR-type connectors
