Alpha 8100 Operating Manual page 24


Figure 4-3 - AC Power setting
With the top cover removed, the primary voltage taps are
located on the top of the Mains Board, which is between
the transformer and the front panel. There is a row of 5
"fast on" connectors (J1 through J5) and a "flying" jumper
connector which mates with them. See Figure 4-3. There
are 5 "nominal" primary voltages, which cover all the
line voltages normally encountered around the world.
Selecting the appropriate tap for your situation will
optimize amplifier performance, safety and lifetime. The
nominal mid-range voltage for each tap is printed on the
Mains Board circuit board. These voltages are 100,120, 200,
220 and 240 Volts. The acceptable line voltage for each
tap is the center voltage plus or minus 10 Volts. One of
these taps is suitable for any of the "nominal" line voltages
encountered worldwide.
ALPHA 8100 OPERATING MANUAL
www.alpharadioproducts.com
240 V
220 V
200 V
120 V
100 V