9
Input Connections
The red RCA-type input is for the right channel; black is for the left channel. As with speak-
er cables, you have many esoteric options as well as “conventional” connection cables. At the very
least, use high quality RCA cables with gold plating and durable cable-to-plug connections. Cheap
cables can fail and lead to frustrating trouble-shooting — who would ever suspect their connection
cables?
Double-check that “left goes to left”, “right goes to right”, “plus (red) goes to plus (red)”, and
minus (black) goes to minus (black)”.
Line Voltage
This amplifier may be configured for operation with 120 volts or 240 volts, 50 / 60 Hz. The
changeover must be performed by qualified personnel. It is a standard switch setting under the
bottom cover.
Fuses
The main fuse is
contained in a
drawer just above
the power cord
socket and just be-
low the main power
switch. To open,
remove the power
cord and pull out-
ward on the tab-
from within the cord
socket opening.
This is a 250 volt
10 amp fast blow
fuse. Use only the
same rating and
type.
The rear panel B+ fuse is 1000v 1A fast-blow type, and should be replaced with the same
type and rating if it ever needs replacing. Do not, under any circumstances, use a “slow-blow” fuse
here.
Normally, a 1.0 ampere fuse will be perfect for music because the peak-to-average power
ratio of speech and music is about 10:1. If you find that the 1.0 amp fuse blows with music, you
may replace it with a 1.25 ampere fuse.
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