Basic connections, Connecting speakers, Cables used for connections – Marantz MER803 User Manual

Page 14: Protection circuit

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8

ENGLISH

This section explains how to connect speakers, TV, set-top box, antennas and power cord.
For other connections, see the sections below.

n

Connecting an iPod or USB memory device to the iPod/USB1 port (vpage 25)

n

Connecting a USB memory device to the USB2 port (vpage 26)

n

Connecting a portable audio player (vpage 26)

n

Connecting to the network (vpage 27)

NOTE

• Do not plug in the power cord until all connections have been completed.
• When making connections, also refer to the user guide of the other components.
• Be sure to connect the left and right channels properly (left with left, right with right).
• Do not bundle power supply cords together with connection cables.

Doing so can result in humming or noise.

Basic connections

Connecting speakers

Carefully check the left (L) and right (R) channels and + (red) and – (black) polarities on the speakers being
connected to the unit, and be sure to connect the channels and polarities correctly.

Cables used for connections

Audio cable (sold separately)

Pin-plug cable

Speaker cable

Connecting the speaker cables

Protection circuit

The protection circuit is be activated in the
following situations:

• If the speaker cable wire touches the rear panel

or screws or if the speaker cable wire touches
the speaker cable’s + and – sides are touching

• If the surrounding temperature is extremely

high

• If the inside of the amplifier gets hot to

extended use at a high output

If this happens, unplug the power cord, then check
the connections of the speaker cables and input
cables. If the unit becomes very hot, wait for it to
cool off and improve the ventilation around it. After
doing this, plug the power cord back in.
If the protection circuit is activated even though
there are no problems with the ventilation around
the unit or in connections, the unit may be
damaged. Turn off the power and then contact a
Marantz service center.

Peel off about 10 mm of sheathing from the tip
of the speaker cable, then either twist the core
wire tightly or terminate it.

NOTE

• Use speakers with an impedance of 6 to 8 Ω. The

protection circuit may be activated if speakers
with an impedance other than specified are used.

• Connect the speaker cables so they do not stick

out of the speaker terminals. The protection circuit
may be activated if the wires touch the rear panel
or if the + and – sides touch each other (vpage 43
“Protection circuit”).

• Never touch the speaker terminals while the

power supply is connected. Doing so could result
in electric shock.

IN

w

q

w

q

(R)

(L)

Subwoofer
with built-in
amplifier

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