User Manual

Connections and Setting Up
XMV4280/XMV4140/XMV4280-D/XMV4140-D Owner’s Manual
19
 Connecting the Power Cord
Connect the included power cord to the [AC IN] connector
(page 15) on the rear panel. First connect the AC power cord
to the connector on this unit, then plug it into an appropriate
AC power outlet.
 Turning the Power On
Use the front panel power switch (page 9) to turn the power
on.
 Enabling Analog Input
Using the front panel, enable analog input as follows.
1. While holding down the [FUNCTION] but-
ton, turn the encoder to make the display
indicate “SRC.”
The control mode will change to “Analog/digital input
selection.”
2. Press the [SELECT] button of the channel
for which you want to enable the analog
input.
The [SELECT] indicator of the selected channel will
light.
3. Take your finger off the [FUNCTION] button,
and turn the encoder to make the display
indicate “ANA.”
Input from the analog input connectors will be enabled.
 Making High Pass Filter (HPF) Settings
If the unit is set for low impedance connections, the HPF
will be OFF. If the unit is set for high impedance connec-
tions, the 80 Hz HPF will be enabled.
If you want to change this setting, proceed as follows.
1. While holding down the [FUNCTION] but-
ton, turn the encoder to make the display
indicate “HPF.”
The control mode will change to “HPF.”
2. Press the [SELECT] button of the channel
for which you want to make HPF settings.
The [SELECT] indicator of the channel whose HPF you
are setting will light.
3. Turn the encoder to select the desired HPF
setting.
The available HPF settings are OFF / 40 Hz / 80 Hz.
CAUTION
You must turn off the power before connecting the
power cord.
CAUTION
Before you turn the power on, make sure that audio
signals are not being input to the analog input connec-
tors. If audio signals are being input, excessive input
will be applied to the speakers when the power is
turned on, possibly damaging the speaker system or
damaging your hearing by high-volume sound. If there
is a problem with the speakers or the wiring, the pro-
tection circuit will operate immediately when the power
is turned on. Check whether there might be a problem
with the wiring.
NOTE
If a certain period of time elapses without any operation
being performed, the unit will return to Attenuation set-
ting operating mode.
NOTE
• In order to protect the amplifier, the HPF cannot be
turned OFF if high impedance connections are used.
•If you’re using a sub-woofer with high-impedance con-
nections, we recommend that you change the HPF
setting to 40 Hz.
•If you’re using a full-range speaker with high-imped-
ance connections, the amplifier’s protection circuit may
operate if the HPF is set to other than 80 Hz. We rec-
ommend that you use the 80 Hz setting.
• If a certain period of time elapses without any opera-
tion being performed, the unit will be placed in Attenua-
tion setting operating mode.
NOTE
If the device is set as follows, the HPF settings will be
changed automatically.
Previous
startup
Current startup
HPF
[SPEAKERS]
DIP switches
(page 15)
Device setup
DIP switches 7
and 8 (page 15)
[SPEAKERS]
DIP switches
(page 15)
Hi impedance
RESUME
Low impedance
(changed)
Off
Hi impedance
(not changed)
Same as
the previ-
ous startup
Low impedance
Low impedance
(not changed)
Same as
the previ-
ous startup
Hi impedance
(changed)
80 Hz
(Unrelated to
the setting at
previous
startup)
INITIALIZE
Low impedance Off
Hi impedance 80 Hz