Morel MPS 4.400, MPS 1.550, MPS 5.950 Owner's Manual
MOREL PERFORMANCE
SERIES AMPLIFIERS
Owner’s Manual
MPS 4.400 | MPS 1.550 | MPS 5.950
MOREL PERFORMANCE SERIES AMPLIFIERS / Owner’s ManualMOREL PERFORMANCE SERIES AMPLIFIERS / Owner’s Manual
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We thank you for choosing Morel ampliers to complement your car audio system. The
new MPS ampliers were developed with the same passion and innovative philosophy
that is driving all of Morel’s product development. The MPS ampliers are musical,
dynamic, with clean, uncolored power that can drive speakers to their full sonic potential.
It is very important to carefully read this manual to ensure safe and optimal operation
of the amplier. We highly recommend to have a professional installer integrate the
amp into the sound system. There are many parameters that needs to be taken into
consideration when installing an amplier to safeguard that the car’s electrical system is
not compromised in any way and the sound system is tuned properly.
PRACTICE SAFE SOUND!
Studies have shown that continuous exposure to high sound pressure levels from high
power audio systems can lead to permanent hearing loss. Additionally, high volume levels
can obscure noises from outside your vehicle such as emergency vehicles and horns.
As a valued Morel customer, we urge you to use common sense and practice restraint in
the operation of this product.
Serial Number:
PACKAGE CONTENT
(1) MPS amplier
(1) 2mm hex wrench
(1) 2.5mm hex wrench
(1) 3mm hex wrench
(4) Mounting screws
(1) User manual
(2) Top panel replacement screws
AVAILABLE ACCESSORIES
MPS-R1 subwoofer remote level control (works with MPS 1.550 and MPS 5.950 only)
MPS-HL high-low level adaptor with 50-ohm load resistor
PRECAUTION
The MPS ampliers are designed to work with a 12V DC electrical system with negative
to ground. Use of this product in vehicles with positive ground and/or voltages other than
12V may result in damage to the product and/or vehicle and will void the warranty.
PLEASE MAKE SURE TO CAREFULLY READ AND UNDERSTAND
ALL INSTRUCTIONS PRIOR TO INSTALLATION
SERIAL NUMBER
Please take the time to enter the serial number in the space provided below.
The serial number can be found on the bottom panel of the amplier and on the amplier
packaging. This is required in the event that your amplier requires warranty service and
may be helpful in recovering your amplier in case of a theft. Be sure to store you this
manual in a safe location.
All Morel MPS ampliers comply with CE and EMC regulations.
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MOUNTING THE AMPLIFIER
Choose a location for the amplier with ample ventilation for optimum cooling
performance. Be sure the amplier is mounted with at least 2-inches (50mm) of clearance
around the chassis, and never fully enclosure the amplier in a conned space without
active ventilation. It is strongly discouraged to mount the amplier upside down as this will
limit the heatsink’s ability to remove heat from the circuitry. Also avoid mounting in areas of
direct sunlight and in areas of high vibration, such as a subwoofer enclosure.
Proper mounting consists of the chassis being mounted with the base of the amplier
parallel with the oor or perpendicular to the oor with the ns of the heatsink facing
upward for eective cooling.
Your amplier should always be installed in a location that will remain free of moisture
and dirt, and in a manner that does not interfere with any of the electronics or safety gear
of the vehicle.
For safety purposes, be sure to take the time to properly mount the amplier using
suitable mounting hardware so the amplier does not come loose in the event of a
collision or unforeseen circumstance.
PLANNING AND INSTALLATION
For best results, determine the best conguration of your new amplier and plan
the wiring routes to ease installation and optimize performance.
IMPORTANT! Disconnect the vehicle’s primary ground terminal from the battery post
prior to commencing the installation.
Make sure the mounting location you chose for the amplier does not interfere
with any functions of the vehicle mechanics and/or electronic devices. Also, be aware
of the locations of the gas tank, wiring harnesses, fuel and brake lines, and other vital
components of the vehicle prior to drilling any holes in the vehicle’s chassis.
Select high quality signal cables and proper wire. It is highly recommended
to use 100% OFC (oxygen free copper) power and speaker wire of proper size for best
performance and longevity of the product.
Do not run power or audio cables on the exterior of the vehicle, including underneath,
as this can result in severe damage to the vehicle and person.
Avoid running power and audio cables next to sensitive electronics within the vehicle,
and be sure to route the signal cables away from the power cables.
Always use rubber grommets when running wire through metal walls or barriers,
and use loom to protect the cable from sharp edges or areas of high heat.
Power ampliers place an increased load on the electrical charging system.
Generally, factory charge systems in good condition should be able to withstand the
extra load of an MPS amplier without a problem. However, multiple amplier systems
can draw excess current and create a serious strain on the electrical system. It is best to
consult your audio specialist for advise on whether or not it is necessary to upgrade your
electrical system to meet the demands of the audio system.
Place an insulated in-line fuse holder of the appropriate current capacity within
16 inches (40cm) of the battery positive (+) terminal. Connect to this to the power
cable
connecting the positive terminal of the amplier. This fuse is designed to protect the
vehicle in the event of a short. Only install the fuse once the power cable has been
secured to the amplier.
Locate a solid metal area as close to the amplier as possible to connect the ground
wire terminal. Use the same gauge wire for ground as for the power wire. The length of
the ground wire should not exceed 36 inches (90cm) from the
amplier. To ensure a
solid connection, remove surface paint at the ground point prior to securing the
connector in place.
PROTECTION
Please note that there are no chassis mounted fuses on the MPS ampliers. Instead our
design uses a microprocessor controlled protection circuit which enables the amplier to
optimize the current ow coming into the power supply. This design lowers loss within
the circuitry, increase the power output and improves the sound dynamics of the amplier
for the best listening experience. However, for the safety of you and your vehicle, please
follow instructions for installing an inline fuse with your amplier.
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1. Power Status Indicator
LED illuminates blue when amplier is properly powered on
2. Protection Status Indicator
LED will illuminate red when the amplier is in faults into protect mode related to over
current, short circuit, thermal protection or internal error within the amplier. If the fault is
caused by thermal protection, the amplier will reset automatically once the heatsink has
cooled to about 70°C (160°F). If the protection LED stays illuminated, turn the amplier o
and check the speakers and wiring.
3. Negative Chassis Ground Connector
Connect to a matching 8 gauge or larger OFC (oxygen-free copper) wire for ground as
used the power wire. The length of the ground wire should not exceed 36 inches (90cm)
from the amplier. To ensure a solid connection, remove surface paint at the ground point
prior to securing the connector in place.
4. Remote Turn-On Connector
Connect to wire lead from a switched +12V source. This could be from a head unit or
switched ignition lead. If neither of these sources is available, switch Turn On Mode to
signal sensing or DC oset.
5. +12VDC Power Connection
For safety and optimum performance, connect an 8 gauge or larger OFC (oxygen-free
copper) wire to the +12V terminal. Connect directly to the positive terminal (+12V) of the
car’s battery via a 50A inline fuse. The fuse must be located within 16 inches (40cm) of the
battery.
6-7. Left & Right Speaker Outputs
Connect speaker wire up to 10 gauge. Group A and Group B connections can be congured
in stereo using the + and – of both L & R outputs, or in a mono conguration using
the L+ and R- within Group A or Group B (DO NOT cross-wire between Group A and B).
3-Channel can also be congured using a stereo in Group A and mono in Group B.
8-9. RCA Inputs
Accepts both low-level and high-level signal via RCA style connectors. Use Input Voltage
Selector to choose appropriate voltage level, and 2/4 channel input selector for number
of inputs used. High-level inputs require the MPS-HL line level adaptor (sold separately) to
convert amplied speaker outputs from factory audio systems to RCA style connections.
MPS 4.400 / Features
10. High/Low Level Input Voltage Selector
Select signal input voltage based on the type of input used. When using an aftermarket
radio, DSP or line level convertor, select Low for levels up to 5V. When using high-level
input from an amplied factory audio system, select High for levels up to 10V.
11. 2/4 Channel Input Mode Selector
Selector allows amplier to accept signal from 2 or 4 channels of input.
Selecting 2CH will take signal from Group A L and R input only and send signal
to Group B L and R channels.
2
1
3 4 5 6 7 8 9 10 11
12 13 14 15 16 17 18
12. Turn On Mode Selector
Select between 3 modes to turn on the amplier. When using a switched lead such
as the remove output of a radio, select the default position REM. When connecting to
a factory audio system or alternative source, select Signal and the amplier will turn
on when it senses voltage through the inputs. DC (DC oset) may be used in some
vehicles where signal sensing does not reliably turn the amplier on.
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13 & 16. Input Sensitivity Controller
The input sensitivity controller (gain) is used to properly match input signal levels
from the signal source to optimize the amplier outputs. THIS IS NOT A VOLUME
CONTROL! To properly set, the maximum unclipped output from the radio or source
must be known using either an oscilloscope or, at minimum, a multi-meter and test
program. The amplier can then be properly set to maximize output. If the gain is
not set properly the amplier may clip early and damage your speakers and the
amplier itself. It is highly recommended to use an audio specialist to properly adjust.
Independent gain controls are available for Group A and Group B channels.
14 & 17. Crossover Filter Selector
Select between Full (full range), LP (lowpass) and HP (highpass) depending on the
requirements of the speakers in your system. Selecting LP or HP turns on a 12dB
lter that can be adjusted using the Filter Frequency. This is selected independently for
Group A and Group B channels.
15 & 18. Crossover Frequency Controller
Use this feature to adjust the frequency of the crossover lter between 40 and 400Hz.
This is controlled independently for Group A and Group B channels.
4-CHANNEL LOW LEVEL - RCA INPUTS
4-CHANNEL HIGH LEVEL - SPEAKER TO RCA INPUTS
2-CHANNEL LOW LEVEL - RCA INPUTS
MPS 4.400 / Power And Signal Connections
Optional MPS-HL
Line Level Adaptor
REM
REM
LOW 4CH
LOW 2CH
HIGH 4CH
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