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Connections and Setting Up



Checking the Wiring

Here we'll explain how to change the attenuation settings

and switch muting on/off, which you will need to do when

checking the wiring.

Before you check the wiring, we recommend that you set the

attenuator of all channels to the lowest setting (-99 dB) to

prevent speaker damage.

To check the wiring, you'll need to be outputting an audio

signal from the mixer or other device that's connected to the

analog input connectors.

NOTE

If the speakers are remotely located and you are unable to

check the signal output easily, changing the [SIGNAL] indi-

cator (page 10) setting to "output" will allow you to check

whether current is flowing to the speakers. For details on

switching the indicator setting, refer to "Front Panel Opera-

tions" (page 23).



Changing the attenuator setting

Here's how to change the attenuator setting.

1. While holding down the [FUNCTION] but-

ton, turn the encoder to make the display

indicate "ATT."

2. Press the [SELECT] button of the channel

whose setting you want to adjust.

The [SELECT] indicator of the selected channel will

light.

3. Turn the encoder to gradually raise the

attenuator setting from -99, and verify

that sound is produced from the speaker.



Switching the mute setting on/off

While holding down the [MUTE] button,

press the [SELECT] button of the channel

that you want to control.

When mute is on, the [MUTE] indicator will light; when

mute is off, the [MUTE] indicator will be unlit.



Lowering the Brightness of the Indicators

and the Display

If the front panel LED indicators are too bright, you can

lower their brightness.

After turning the power off, set the rear panel device setup

DIP switch 4 (LED DIMMER) to the lower position (ON).

The next time you turn the power on, the unit will start up

with decreased indicator brightness.

NOTE

The brightness of the [POWER] indicator will not be

reduced.

XMV4280/XMV4140/XMV4280-D/XMV4140-D Owner's Manual



Locking the Front Panel

By locking the panel you can disable front panel operations

other than controlling the power (front panel lock).

When this unit is used as part of an installed system, you can

lock down the settings by disabling operations from the front

panel, thus preventing inadvertent changes.

After turning the power off, set the rear panel device setup

DIP switch 5 (PANEL LOCK) to the lower position

(LOCK). The next time you turn the power on, the unit will

start up with the front panel locked.

Even in the locked state, you can temporarily defeat the

panel lock by pressing the [FUNCTION] button and the

[SELECT] A button. However, it will be re-locked when any

of the following conditions occur.

• One minutes elapses without any operation being per-

formed after the panel is temporarily unlocked

• You press the [FUNCTION] button and the [SELECT] A

button

• You turn the power off

The lock status is shown by the front panel [PANEL LOCK]

indicator.

• Locked: lit

• Not locked: unlit

• Temporarily unlocked: flashing