MPS1000
MARINE POWERED
SUBWOOFER
OWNER’S MANUAL
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The Official Brand of Live Music.
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CONTROLS AND FUNCTIONS
The MPS1000 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 cover and the water-tight
rubber plug underneath. To remove the cover, remove the two small
Phillips-head screws and pull the cover away, according to the arrow
in Figure 4. To reinstall the cover, follow the arrows in Figure 6 and
replace the two screws.
Figure 7. MPS1000 controls on the front panel
TUNING THE MPS1000
1. Make sure the head unit is off and its volume control is set to
minimum.
2. On the MPS1000’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).
Phase
Figure 4. Removing cover
MPS1000
5. Set Phase to 0.°
0°
180°
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.
80
120
max 50
min
max
min
Gain
Crossover
Boost
1
2
1
9. Adjust the Crossover control clockwise or counterclockwise
until you hear only low-frequency information in the output of the
MPS1000. For example, you should NOT hear any vocals coming
from the MPS1000 when seated in the normal listening position.
10. Adjust the Bass Boost control clockwise to suit your preference.
Figure 5. Rubber plug
Power LED: This indicator will glow blue when the MPS1000 is
operational.
Phase
MPS1000
0
80°
Gain Control: Use this control to adjust the volume (loudness) of
the MPS1000, compared to the loudness of the other speakers in
your boat.
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.
120
min
max 50
min
max
Crossover: Use this control to adjust the amount of high-frequency
information in the MPS1000’s output. A lower value means less
high-frequency signal will be present in the MPS1000’s output.
Gain
Crossover
Boost
NOTE: Depending on the MPS1000’s orientation and location in your
boat, reversing the phase may (or may not) increase or decrease the
amount of upper bass being reproduced.
Bass Boost: Use this control to correct any perceived peak or dip
in the bass response. This control provides boost or cut at 50Hz.
Set the control to any value between 0dB and +7dB, according to
your preference.
NOTE: Be sure to replace the rubber plug after making adjustments.
Figure 6. Reinstalling cover
Phase Control: Use this switch to reverse the phase of the MPS1000’s
output, with respect to its input. Choose the position (0° or 180°) that
sounds best. See “Tuning the MPS1000.”
3
1
3
2
3
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TROUBLESHOOTING
SPECIFICATIONS
MPS1000
13"
SYMPTOM
LIKELY CAUSE
SOLUTION
331mm
10" (250mm) Marine Powered Subwoofer
• Amplifier Power: 250W RMS
• Frequency Response: 40Hz – 100Hz
• Signal-to-Noise Ratio: 81.1dB
• Fuse: 30A
• Max. Current Draw: 14A
• Idle Current Draw: <1.03A
• Input Sensitivity:
• Line-Level Input: 100mV to 6V
• Speaker-Level Input: 1V to 13V
• Crossover Frequency: 50Hz to 100Hz
• Crossover Slope: 12dB per octave
• Bass Boost: 0dB to +7dB @ 50Hz
• Mounting Depth: 7-15/16" (202mm)
• Cutout Diameter: 10-1/8" (258mm)
• Overall Diameter: 13"/13-1/16" (331mm/332mm)
• ISO-8846 Marine-compliant
Power LED is not lit.
Fuse is blown.
Fuse should be replaced.
Head unit is not
functioning properly.
Check remote voltage, and power,
ground or remote connections. The
MPS1000 is designed to shut off if
the battery voltage falls below 10V.
This is to ensure that your battery
isn’t completely drained. Charge
the boat’s battery.
13-1/16"
332mm
Power LED is lit
but there is no bass.
Inputs are not connected. Check connections.
Head-unit fader control
is not set properly.
Gain control is set too high. Readjust Gain control (see “Tuning
the MPS1000” on the previous page).
Adjust head-unit fader control to
feed audio signals to the MPS1000.
MPS1000 sounds
muddy or distorted.
1-1/2"
39mm
Bass Boost is set too high. Readjust Bass Boost control
(see “Tuning the MPS1000” on the
previous page).
Head-unit output is
7-15/16"
202mm
distorted or blown.
A valid serial number is required for warranty coverage.
Features, specifications and appearance are subject to change without notice.
9-3/16"
234mm
10-1/8"
258mm
Declaration of Conformity
Harman Consumer Group, Inc.
250 Crossways Park Drive
Woodbury, NY 11797 USA
We, Harman Consumer Group, Inc.
2, route de Tours
72500 Château du Loir
France
declare in own responsibility that the product
described in this manual is in compliance with
technical standards:
© 2007 Harman International Industries,
Incorporated. All rights reserved.
EN 55013:2001
EN 55020:2002
JBL is a trademark of Harman International
Industries, Incorporated, registered in the
United States and/or other countries.
Klaus Lebherz
Part No. MPS1000OM5/07
Harman Consumer Group, Inc.
Château du Loir, France 5/07
www.jbl.com
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