CONNECTING CABLES
Use shielded cables to connect the signal from the preamplifier or other signal source
to the power amplifier. To minimize the possibility of hum. the cables should be located away
from speaker connecting cables and AC power cords.
Use good quality cables. Your dealer can advise you on the type and lengths of cables
that will best suit your installation.
STEREO OPERATION (UNBALANCED INPUTS)
Use shielded single conductor cable with RCA type plugs. Connect the cable from the left
channel output of a preamplifier to the LEFT UNBALANCED INPUT on the power amplifier.
Connect the right channel output to the RIGHT UNBALANCED INPUT
Set the MODE switch to STEREO.
STEREO OPERATION (BALANCED INPUT)
Modern technology has made it possible to build preamplifiers and power amplifiers with
the high signal to noise ratio necessary to reproduce the sound quality present on compact
discs or any other wide dynamic range signal source.
It is possible for conventional interconnecting cables to pick up electrical interference from
other equipment, AC cables or electrical appliances. Using the balanced inputs provides an
additional 40dB more protection against such noise pickup.
Use 2 conductor shielded cables with XLR type connectors to connect between the
preamplifier and the power amplifier. The maximum effect of balanced cables is realized when
both the preamplifier and power amplifier have similar XLR balanced connectors.
Connect the left balanced output cable from a preamplifier to the LEFT BALANCED IN-
PUT on the power amplifier. Connect the right output to the RIGHT BALANCED INPUT.
Pin configuration for the XLR INPUT connectors on the MC300
PIN 1: Shield or ground.
PIN 2: + input.
PIN 3: - input.
In stereo installations where the amplifier and preamplifier are close to each other and
require interconnecting cables of six feet or less, using quality unbalanced connecting cables
is usually perfectly satisfactory. If the units are farther apart and require longer interconnect-
ing cables, using balanced cables will give extra protection from noise or interference.
MONOPHONIC BRIDGED OR PARALLEL
A rear panel MODE switch allows the amplifier to be used in normal STEREO. MONO
(BRIDGED) or MONO (PARALLEL). When switched to either MONO (BRIDGED), or MONO
(PARALLEL) operation, the RIGHT BALANCED and UNBALANCED inputs are the only ones
used for the mono input signal. The LEFT inputs are automatically disconnected.
Connect the appropriate cable from a preamplifier or other mono source to the appropriate
RIGHT UNBALANCED or BALANCED amplifier input.
HOW
TO
CONNECT
INPUTS
8