JBL Marine MR-18.3 Operation Manual Download Page 8

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1. POWER ON/OFF, MUTE button (1)

Press PWR button (1) to turn the unit on. Press and hold it for over 3 seconds to turn
the unit off. To mute audio, quickly press the MUTE (1) button; press the button again
to restore audio.

2. SELECT button (3)

1) Audio control ( VOLUME / BASS / TREBLE / BALANCE / FADER )

Press key quickly to select the following features:

"VOL" display - volume control > press key (3)>
"BAS" display - bass tone control >press key (3)>
Turn spindle knob left to lower bass, turn right to increase bass.
"TRB" display - treble tone control > press key (3)>
Turn spindle knob left to lower treble, turn right to increase treble.
"BAL" display - balance control > press key (3)>
Turn spindle knob left to decrease right speaker volume.
Turn right to increase left speaker volume.
"FAD" display - fader control > press key (3)>
Turn spindle knob left to decrease the volume level of any speakers
connected to the front channel.
Turn right to decrease the volume level of any speakers connected
to the rear channel.

If another selection or adjustment is not made within 5 seconds, the radio automatically
switches into volume control mode.
These settings are indicated on the display window.

2) Beep 2nd , I-Vol , Area and DSP Selection

When the SEL button (3) is pressed over 2 seconds, the unit will be operated as below:

VOLUME

Select

BASS

Select

TREBLE

Select

FADER

Select

BALANCE

Select

Controls

a. Beep 2nd

On the beep 2nd, you can control the Beep on or Beep 2nd by turning the spindle knob.
- Beep on: You can hear beep

sound when you press all buttons.

- Beep 2nd: You can hear beep

sound when you press the button over 1.5 seconds.

b. I-VOL

By pressing the SEL button again, the unit will display in I-VOL (Initial Volume Level
Adjustment). You can adjust the I-Vol to the setting you want by turning the spindle
knob. This feature control the max volume level desired upon powering the radio on.

c. Area Selection

By pressing SEL button again, the unit will be in Area Selection mode. Use the
spindle knob to choose USA or EUR (Europe). Press and hold the BAND button for
1-2 seconds to accept the desired setting.

d. DSP

Choose from flat, classic, pop or rock by pressing the SEL button again. Adjust with
spindle knob and wait approximately 5 seconds for the setting to be accepted; then
the radio will automatically return to normal operation.

e. CODE

See page 13 section 8 “To Change the Password”.

3.Volume control

Turn the spindle knob (2) left or right to decrease or increase the volume level.
The radio will automatically default to volume mode when powered up.

4."MODE" button (4)

Press this button to select Radio CD SIRIUS AUX-IN.

5. SHIFT / SCROLL ( SH.SR) button (5)

SIRIUS function button only.

6. BD.FN button (6)

Pressing the BD

FN button will shift FM/AM bands in radio mode as:

FM1 FM2 FM3 AM1 AM2.
And in Sirius mode, press BD.FN will shift between SSR1 and SSR2.

7. Loudness function (13)

In order to emphasize the bass and the treble at low volume, press the LOUD (13)
button. To turn off loudness press the LOUD button again. If in Sirius mode, first press
SH.SR (5) button; then press the LOUD (13) button.

Controls