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Before you begin , you will need tools, supplies and adapters. It is best to make sure you have
everything you need before you start.
Allow air circulation around the amplifier.
When selecting a location, remember that amplifiers generate heat. Select a location where air can
circulate around the amplifier.
Do not cover the AMPLIFIER with carpets or enclose it behind interior trim panels.
Every installation will be a bit different based upon vehicle design, Check all locations and placements
carefully before making any cuts or connections.
Before you begin, always disconnect the battery negative terminal.
If wiring connections are made incorrectly the unit will not operate properly and could be damaged.
Follow the installation instructions carefully or have the amplifier installed by an authorized dealer.
The design philosophy of the amplifiers and mode of regulation requires that proper installation and load
impedance instructions be adhered to at all times.
Minimum impedance recommended for all digital monoblock amplifiers ( MILLE & MEZZO ) are 1ohm.
For master/slave link operation, the minimum impedance for all digital monoblock amplifiers are 2ohm.
Each master amplifier must be paired up with a exact same model slave amp.
Fuses are equipped with for MILLE ( 30Ax3 ATC ). MEZZO is not equipped with the fuse.
Fuse ratings are 90A for MILLE and 120A for MEZZO single unit.
These fuse ratings should be sufficient under normal working conditions. However, if the amplifiers are
overloaded ( see minimum impedance above ) fuses may blow.
Therefore, please try to avoid operating the amplifiers under these conditions.
1. Mount the amplifiers where air flow is the best.
2. Mount the amplifiers to a solid surface away from vibration, as these amplifiers are very heavy
and the vibration can damage the amplifiers.
3. Take extreme caution when mounting the amplifiers, so as not to damage the chassis with a drill or
screwdriver.
4. Run 0 AWG or 4AWG wire from the battery, using fuses with 12” of the positive battery terminal.
The fuse is to protect the car and your car audio system from the fire that could be caused by a short circuit.
5. Run 0AWG or 4AWG ground wire as short as possible, to the closest chassis ground point.
Be sure to remove the paint around the chassis ground point to provide a more solid electrical connection.
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6. Run a 16 AWG ( or larger ) wire to the remote turn-on lead of the headunit.
7. Connect the speakers as per wiring diagrams in the manual.
12AWG or larger speaker wire is recommended.
8. Mount remote level control in the car where it can be easily reached from the driver’s seat, if desired.
9. Using rca interconnect cables, connect all line inputs per the wiring diagrams which follow.
If possible, keep rca cables away from the 12V power and ground wire.
10. Set the controls as described on following pages.
Connect directly to the vehicle battery
+ terminal with 0 or 4 AWG wire
4~0 AWG wire
Battery
Terminal
Adapter
Install as close as
to the battery as possible
External or
Built in Fuses
4~0 AWG wire
Battery
Terminal
Adapter
External or
Built in Fuses
Connect to a good chassis ground. The ground
connection should be clean, unpainted metal
to provide a good electrical connection
Drill 1/8” hole in
Chassis sheet metal
Sheet Metal
screw
4~0 AWG wire
Connect the source unit’s remote turn on lead
from the source unit to the amplifier’s remote
terminal. This turns on the amplifier whenever
the source unit is turned on.
Please follow original fuse type
and fuse rates.
MILLE has built-in Fuses ( 30A x 3 )
MEZZO : 120A ( 240A for Link )
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RCA INPUTS The RCA inputs ensure the highest quality contacts
and the lowest noise in your audio system.
RCA OUTPUTS The RCA outputs connect another amplifier for multi
car amplifiers system.
POWER & PROTECT INDICATORS -
When the unit is powered on and operating
correctly the power LED illuminates.
When the unit is malfunction or faulty, the protect LED is on.
GAIN This adjusts the normal operating level of
the amplifier by matching the level from the headunit.
SUBSONIC FILTER This allows you to tune the response of the amplifier
at very low frequencies.
BASS BOOST This allows you to tune amplifier response with up
to 9dB of boost centered at 45Hz
REMOTE CONTROL Use this to control level of the amplifier from
your driver’s seat.
LOW PASS CROSSOVER FREQUENCY CONTROL This allo
ws you to tune the response of the amplifier
at higher bass frequencies to roll off for
a seamless integration into your midbass.
PHASE It is adjustable from 0 to 180 degree.
MASTER/SLAVE ( LINK ) CONNECTION Using one amplifier set this to Output Master.
Second amp is set to Input Slave
In Strappable mode, Minimum impedance is 2ohm
Subwoofer speakers impedance should be checked
vey carefully to prevent any damages to subwoofers
and the amplifiers.
SPEAKER TERMINAL BLOCK Connect speaker cables from speaker terminal block to
subwoofers.
Subwoofers impedance should be checked carefully.
GROUND ( GND ) & POWER ( +12V ) The power and ground will accommodate 0 or 4 AWG
wire. Use high quality pure copper wire only.
REMOTE ( REM ) REM connector will accept wire sizes from12 to 18 AWG.
T
his terminal is used to remotely turn-on and turn-off
the amplifier when +12V DC is applied.
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Fuses
Ground
4 - 1 OHMS
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MASTER AMPLIFIER
SLAVE AMPLIFIER
INPUT CONNECTION STEPS ;
Step 1. Set output master / input slave swtich to OUTPUT MASTER on master amplifier.
Step 2. Set output master / input slave swtich to INPUT SLAVE on slave amplifier.
Step 3. Connect RCA JACK on master amp to RCA JACK on slave amp.
Set Master amp switch
to Output Master
Set Slave amp switch
to Input Slave
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SPEAKER OUTPUT CONNECTION STEPS ;
Step 1. Connect speaker cable ( ) on master amplifier to subwoofer ( )
Step 2. Connect speaker cable ( ) on slave amplifier to subwoofer ( )
Step 3. Connect speaker cable ( ) on master amplifier to speaker cable ( ) on slave amplifier
MASTER AMPLIFIER
SLAVE AMPLIFIER
Fuses
Ground
Ground
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TROUBLE SHOOTING
NO POWER LED ON, NO OUTPUT
Check +12V and GND connection
Check remote signal +12V
Check the external fuses or built-in.
POWER LED ON, NO OUTPUT
Check source unit for output
Check input gain control
Check RCA cable
Check speaker and wiring for shorts
Check for damaged speakers
NO SOUND ON ONE CHANNEL
Swap left/right input to check source
... If sound swaps too, source or signal cable is bad
Swap left/right speaker to check speakers
... If sound does not swap, speaker or speaker wiring is bad
... In any case, consult authorized dealer
AMPLIFIER GOES IN PROTECTION MODE AT HIGHER GAIN
Check speaker impedance ( MILLE & MEZZO ) is 1ohm for single unit
and 2ohm for link connection.
Check working voltages ( 8.5V - 16Volts for MILLE & MEZZO )
Check speaker wiring for short ci
rcuit
ENGINE OR ALTERNATOR WHINE NOISE
Check wiring. make sure RCA cables are not run parallel on same side of vehicle as power cable.
Check any preamps or black boxes in the signal path between source unit and amplifier
Make sure ground pin ( shield or outer barrel of rca cables ) have not lost connection and
that source unit has good reference ground.
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FEATURES
All features are subject to change in the continuing efforts to improve the products without notice.
MILLE MEZZO
4ohm Power 400W 500W
2ohm Power 650W 900W
1ohm Power 1000W 1500W
Frequency Response 15Hz - 270Hz 15Hz - 270Hz
Signal to Noise 85dB 85dB
Efficiency @ 4ohm O ver 90% O ver 90%
Damping Factor 200 < 200 <
Input Sensitivity 6V - 0.2V 6V - 0.2V
Subsonic Filter 10Hz - 50Hz 10Hz - 50Hz
Bass Boost 0dB - 9dB 0dB - 9dB
Remote Control Included Included
Low Pass Filter 35Hz - 250Hz 35Hz - 250Hz
Phase 0 - 180 degree 0 - 180 degree
Strappable Connection Yes Yes
Fuse Rating 90A 120A
Link Fuse Rating 180 A 2 4 0 A
Dimensions (L mm) 250 300
W x H mm 220 x 66 220 x 66
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