Controls And Functions - Harman JBL Marine MBP10 Mode D'emploi

CONTROLS AND FUNCTIONS

The MBP10 has several controls and indicators that simplify sonic
integration with the rest of the speakers on your boat. To gain access
to the controls, you must remove the water-tight rubber plug underneath. To
install the cover, follow the arrows in Figure 6 and insert the two screws.
Figure 4. Rubber plug
NOTE: Be sure to replace the rubber plug after making adjustments.
Figure 5. Installing cover
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Figure 6. MBP10 controls on the front panel
Power LED: This indicator will glow white when the MBP10 is operational.
Gain Control: Use this control to adjust the volume (loudness) of the
MBP10, compared to the loudness of the other speakers in your boat.
Crossover: Use this control to adjust the amount of high-frequency
information in the MBP10's output. A lower value means less
high-frequency signal will be present in the MBP10's output.
Bass Boost: Use this control to correct any perceived peak or dip in the
bass response. This control provides boost or cut at 60Hz. Set the control
to any value between 0dB and +7dB, according to your preference.
Phase Control: Use this switch to reverse the phase of the MBP10's
output, with respect to its input. Choose the position (0° or 180°) that
sounds best. See "Tuning the MBP10."
TUNING THE MBP10
1. Make sure the head unit is off and its volume control is set to
minimum.
2. On the MBP10's front panel, set the Gain control to the midpoint
position.
3. Set the Crossover control to its maximum position (clockwise).
4. Set the Bass Boost control to the minimum position
(counterclockwise).
5. Set Phase to 0°.
6. Turn on the head unit and play a favorite music track that has
substantial bass. Set the head unit's volume control to 75% of the
total output (approximately 3 o'clock on rotary controls).
7. Listen to your system, making a mental note of the amount of upper
bass being reproduced.
8. Switch the Phase control to 180° and listen again for upper bass
content. There may be more upper bass, less upper bass, or no
change at all. The position that provides the most upper bass is
correct.
9. Adjust the Crossover control clockwise or counterclockwise until you
hear only low-frequency information in the output of the MBP10. For
example, you should NOT hear any vocals coming from the MBP10
when seated in the normal listening position.
10. Adjust the Bass Boost control clockwise to suit your preference.
NOTE: In most cases, the steps above will provide satisfactory tuning.
However, the actual process may require several readjustments of each
control, since the settings will interact with each other. If necessary,
consult your authorized JBL car or marine audio dealer for help in tuning
your system.
NOTE: Depending on the MBP10's orientation and location in your boat,
reversing the phase may (or may not) increase or decrease the amount
of upper bass being reproduced.