McIntosh MC275 - Manual (Page 11)

11
Jumper Cables Refer to page 13
for the correct
switch settings
How to Connect for Mono Parallel
How to Connect for Mono Parallel
1. Connect cables from the Balanced Output of a McIn-
tosh Preamplifier or Control Center to the MC275
Right Balanced Input.
Note: An optional hookup is to use unbalanced cables.
2. Prepare the Loudspeaker Hookup Cable and Jumper
Wires for connection to the Power Amplifier Output
Terminals; two 4-1/2 inch (11.43 cm) Jumper Wires,
and one Loudspeaker Hookup Cable cut to the desired
length. Prepare the cable and wires by choosing one of
the methods below:
Bare wire cable ends:
Carefully remove sufficient insulation from the cable
ends, refer to figures 1, 2 & 3. If the cable is stranded,
carefully twist the strands together as tightly as pos-
sible.
Note: If desired, the
twisted ends can be
tinned with solder
to keep the strands
together.
Spade lug or prepared wire connection:
Insert the spade lug connector or prepared section of
the cable end under the terminal strip screw and
tighten the screw until the cable is firmly clamped
into the ter-
minal strip
so the
wires can-
not slip
out. Refer to figures 4, 5 & 6.
3. Connect the hookup cables to the output terminals that
match the connections in the chart below, being careful
to observe the correct
polarities. Output im-
pedance connections
of 2
S (ohm), 4S (ohm) and 8S (ohm) are provided. If
the Loudspeaker’s impedance is in-between the avail-
able connections, use the nearest lower impedance con-
nection.
4. Place the MC275 POWER Switch to the OFF Position
and connect the supplied power cord to an active AC
outlet.
5. Refer to page 13 for the correct settings of the MODE
and INPUT Switches.
4 ohm
Loudspeaker
McIntosh Preamplifier
Mono (Parallel) Hookup Connections
Loudspeaker
Impedance
Loudspeaker Negative
(-) Connection
Loudspeaker Positive
(+) Connection
2 S (Ohm)
Left and Right Output 4 S
Negative (- ) Connection
Left and Right Output 4 S
Positive (+ ) Connection
4 S (Ohm)
Left and Right Output 8 S
Negative (- ) Connection
Left and Right Output 8 S
Positive (+ ) Connection
8 S (Ohm)
Left and Right Output 16 S
Negative (- ) Connection
Left and Right Output 16 S
Positive (+) Connection