Bazooka MGA11500H, MGA11000H User Manual

ENGLISH

1

Dear customer,

Congratulations on your purchase of a Bazooka high-performance amplifier. At Bazooka,
we are fanatics about accurate music reproduction. Your selection of our products for
your sound system indicates that quality sound is also important to you too. At SAS, we
take great pride in manufacturing revolutionary audio products, and through the years of
engineering expertise, hand craftsmanship and critical testing procedures, we have
created this high-performance series of amplifiers. We hope that you will take as much
pride in owning and using one of these high-quality audio products as we do designing and
manufacturing them.

When properly installed and operated, your Bazooka MGA amplifier will give you years of
clean uninterrupted sound reproduction. Therefore, we urge you to take a few minutes to
carefully read through this manual. It will explain all of the features of your amplifier and
help insure trouble free installation.

Sound can be deceiving. Over time your hearing comfort level adapts to higher volumes of
sound. What may have sounded normal can actually be too loud and harmful to your hearing.
Guard against this by setting your equipment at a safe level before your hearing adapts.

To establish a “safe level”,

Start with your volume control at a low setting.

Slowly increase the volume control until you can hear comfortably, clearly and
without distortion.

Once you have established a comfortable “sound level”, make a note of this
position and do not go above this setting

Taking a minute to do this will help prevent your hearing from being damaged and allow you
to enjoy listening to music throughout your lifetime.

ENGLISH

2

MGA AMPLIFIERS

SAFETY PRECAUTIONS

Fuse amplifiers power wire at the battery.

Be sure to fuse the power wire within 6” of the car's battery. This will protect the car's
battery in case of a short circuit between the power amplifier and battery. THIS IS A MUST,
the amplifier's built-in fuse will only protect the power amplifier not the car's battery!

Use high grade wire connectors.

ENGLISH

To ensure maximum power transfer and secure safe connections, it is recommended to
use high grade barrier spades (for connection at amplifier if applicable) and terminal rings
(for connection at battery).

Do not run any wires underneath vehicle.

Exposed wires have a chance of being cut or damaged. It is best to run all wires through
the vehicle under the carpet and/or side panels. This leads to a cleaner installation and
less risk of damage.

Use caution when mounting amplifier.

Remember there are many electrical wires, gas lines, vacuum lines, brake lines as well as a
gas tank in the automobile. Make sure you know where they are when mounting the
amplifier to avoid puncturing lines, shorting wires or drilling holes in the gas tank.

Run signal wires away from electrical wires.

To avoid possibility of induced noise from the car's electrical system (i.e. popping noises or
engine noise), run wires away from the car's electrical wiring.

Make all ground wires as short as possible and at the same point.

In order to reduce the chance of ground loops (i.e. engine noise), make the grounding wire
as short as possible to reduce the wire's resistance. Also, when using multiple
components, make sure all units are grounded at the same point.

Avoid sharp edges when running the wires.

To avoid the possibility of power, signal or speaker shorts, be careful not to allow the
amplifiers wires to come in contact with sharp edges. Use a grommet to protect the wire
when running through the fire wall .

3

FEATURES AND BENEFITS

Power Management and Cooling System

The MGA11000H and MGA11500H Amplifiers are equipped with a state-of- the- art power to
optimise the amplifier’s power and temperature. This intelligent circuit monitors the
amplifiers operation and automatically adjust the output power and fan speed to optimize
the performance as well as long term operation of the amplifier. If the amplifier is run at a
level below clipping for a period of 5 mins, the amplifier will go into a lower power mode to
improve run times. Once in the lower power mode any clipping indication will remove the
amplifier from the lower power mode into the full power mode.

To mantian cool operation, the fans will speed up and run at high speed when clipping is
detected for 30 seconds or when the amplifier reaches high temperatures. If the amplifier
reaches maximum temperature and goes into thermal protection, the fans will continue to
run untill the amplfier cools down.

Thermal trip Points

88C - Thermal Protection - Amplifier Shuts off to cool down.
78C - Thermal Protection Hysteresis Point - Amplifier Resumes Operation.
70C - Amplifier is Hot - Power Management Reduces Power and Increases Fan Speed
65C - Amplifier is in Normal operation conditions.

DC Offset Protection

This circuit protects the output of the amplifier against DC voltage. If for some reason DC
voltage is detected at the output stage, the amplifier will shut down protecting the
speakers from direct current.

Short Circuit Protection

ENGLISH

This circuit protects the amplifier from damage due to a short found in the speakers or
wiring. If one of the speakers or its wiring comes in contact with ground, the amplifier will
shut down. To resume normal operation, correct the problem and turn the head unit off,
then back on. The amplifier will reset and play again.

Built-in Crossover

The “MGA” amplifiers include a built-in variable low pass crossover. The crossover
features a variable frequency selection (30Hz ~ 250Hz) for precise low pass filtering.

Bass Boost

For added low frequency performance the amplifiers include a variable 0 ~15dB bass boost
with an adjustable center frequency from 30Hz to 125Hz.

Diagnostic Lighting

The MGA11000H and MGA11500H are equipped with diagnostic lighting to display the
operation status of the amplifier. Please see the trouble shooting section of the manual
for a list of the modes and description of this feature.

4

MGA AMPLIFIERS

Subsonic Filter

A subsonic filter has been provided to filter out unwanted subsonic bass frequencies
below the audible range of the subwoofer. This feature helps to improve the amplifier's
overall performance since power is not wasted reproducing frequencies beyond the
speakers' normal operating range. This feature works in conjunction with the Low-pass
crossover to provide band-pass filtering.

Phase Adjustment

ENGLISH

The phase switch allows for 0 or 180 degree phase adjustment for the woofers. In most
systems, this phase adjustment should be set at 0 degrees. The 180-degree setting is only
needed if the subwoofers are out of phase with the satellite speakers in the vehicle.

Power Fusing (MGA11000H ONLY)

This protects the amplifier against short circuits and excessive current. Please note that
the MGA11500H is not fused internally and requires a 200A external fuse. Refer to the
power connections for the MGA11500H for more details.

Remote Turn-on

Automatically turns amplifier on when connected to the head unit's remote output. The
amplifier will turn on and off with the head unit to save current consumption. This control
also operates the reset circuit for the amplifier's protection. It must be connected with
the head unit in order to reset protection circuits.

Adjustable Input Sensitivity

Allows you to fine-tune the level matching between your source and the power amplifier.

5

MOUNTING LOCATION

Before you start the installation, it will be necessary to find a mounting location for the
amplifier. Find a location in which the amplifier will receive adequate ventilation in order
to dissipate the heat it develops during operation. Two popular mounting locations are in
the trunk or under the seat.

Select the location in which you wish to mount the amplifier. Use caution when mounting
amplifier, there are many wires, gas lines, vacuum lines, brake lines as well as a gas tank in
the automobile. Make sure you know where they are when mounting the amplifier to avoid
puncturing lines, shorting wires or drilling holes in the gas tank. Once you are ready, use a
pencil to mark the mounting holes in the bottom panel. After you have marked the locations
of the holes move amplifier out of the way and drill small starter holes to make the tapping
screws easier to install. Use provided screws to tighten down the amplifier.

ENGLISH

10

80

30

125

SUBSONIC

FREQ Hz

BASS

BOOST

FREQ Hz

REMOTE

0
dB
15
BASS BOOST

XOVER

SOURCE

PHASE

FREQ Hz
30

IN

NORMAL

OUT

SLAVE

250

R

L

-

+

+

MIN

SPEAKER

MAX

LEVEL IN
.4V - 12.2V

GAIN

6

INPUT

SLAVE IN

PWR \
PROT

-

SLAVE OUT

L

R

MGA AMPLIFIERS

ENGLISH

Panels slide off to make connections easier.
Be sure not to break plastic locking tabs!

CONNECTIONS

Rubber plugs can be removed to reveal
channels for C.H.I.L water cooling kit!
Removing these plugs makes panel removal
easier.

7

POWER CONNECTIONS MGA11000H

1
MIN

IN-LINE POWER FUSE

IN-LINE POWER FUSE

MOUNTED WITHIN 6”

MOUNTED WITHIN 6”

FROM BATTERY RECOMMENDED

FROM BATTERY RECOMMENDED

(NOT PROVIDED)(NOT PROVIDED)

RADIO'S REMOTE

RADIO'S REMOTE

TURN-ON OUTPUT

TURN-ON OUTPUT

CHIL

FUSE 30A X 4

94.794.7

+12V GND

TURN-ON

++

CAR BATTERY

CAR BATTERY

+12V

+12V

--

IMPORTANT! Before making any connections, disconnect the car’s battery until the

installation is completed to avoid possible damage to the electrical system.

Connect the amplifier to the car's battery.

Make your power connections using a 4 gauge power wire for your connections. Strip one
end of the wire to connect to the terminal on the amplifier marked “+12V”. Loosen screw
terminal and connect bare wire and tighten. Use caution to make sure no stray wire
strands come in contact with surrounding terminals causing short circuits. Run the wire
directly to the positive terminal of the car's battery. Make sure to use an in-line fuse
within 6” of the car's battery to protect the electrical system and amplifier against short
circuits and/or power surges.

Connect the ground terminal of the amplifier to the car's chassis.

ENGLISH

For the ground connection, use an 4 gauge wire (black) to connect to the terminal marked
GND and then connect it to the car's chassis. Try to keep the length of the cable as short as
possible, preferably less than 6". Also make sure that the point on the car where the
connection is to be made is free of paint and dirt.

Connect the remote terminal of the amplifier to a switchable +12V source.

This connection allows the amplifier to be turned on and off with the power control of the
radio. If the radio has a REMOTE output terminal, connect it to the amplifier's terminal
marked “TURN-ON” (using a 16 gauge wire or heavier). Now when the radio is turned on, the
amplifier will automatically turn on.

8

MGA AMPLIFIERS

POWER CONNECTIONS MGA11500H

1
MIN

CHIL

+12V GND

TURN-ON

ENGLISH

MANDATORY IN-LINE POWER FUSES

MANDATORY IN-LINE POWER FUSES

(200A)EACH MOUNTED WITHIN

(200A)EACH MOUNTED WITHIN

6" FROM AMPLIFIER

6" FROM AMPLIFIER

(PROVIDED)(PROVIDED)

MANDATORY IN-LINE POWER FUSES

MANDATORY IN-LINE POWER FUSES

(200A)EACH MOUNTED WITHIN

(200A)EACH MOUNTED WITHIN

6" FROM BATTERY

6" FROM BATTERY
(NOT PROVIDED)(NOT PROVIDED)

94.794.7

RADIO'S REMOTE

RADIO'S REMOTE

TURN-ON OUTPUT

TURN-ON OUTPUT

++

CAR BATTERY

CAR BATTERY

IMPORTANT! The amplifier is NOT fused internally. You MUST fuse the power line at the

amplifier and at the battery. Failure to do so could cause serious damage to the amplifier as well as
the vehicle. Before making any connections, disconnect the car’s battery until the installation is
completed to avoid possible damage to the electrical system.

Connect the amplifier to the car's battery

Because of the extremely high current draw of MGAH11500 we recommended
professional installation of this amplifier. If you decide to install yourself, please make
sure to properly fuse the amplifier.

Make your power connections using a 4 gauge power wire for your connections. Strip one
end of the wire to connect to the terminal on the amplifier marked “+12V”. Loosen screw
terminal and connect bare wire and tighten. Use caution to make sure no stray wire
strands come in contact with surrounding terminals causing short circuits. Connect an in­line fuse(200A) within 6” of the amplifier and then run the wire directly to the positive
terminal of the car's battery. Make sure to use an in-line fuse(200A) within 6” of the car's
battery to protect the electrical system and amplifier against short circuits and/or power
surges.

Connect the ground terminal of the amplifier to the car's chassis

For the ground connection, use a 4 gauge wire (black) to connect to the terminal marked
“ground” and then connect it to the car's chassis. Try to keep the length of the cable as
short as possible, preferably less than 6". Also make sure that the point on the car where
the connection is to be made is free of paint and dirt.

Connect the remote terminal of the amplifier to a switchable +12V source

This connection allows the amplifier to be turned on and off with the power control of the
radio. If the radio has a REMOTE output terminal, connect it to the amplifier's terminal
marked “TURN-ON” (using a 16 gauge wire or heavier). Now when the radio is turned on, the
amplifier will automatically turn on.

+12V

+12V

--

9

SIGNAL CONNECTIONS

Connect the RCA output of the head unit (AM/FM cassette player, CD, or DAT) to the RCA
input terminals of the amplifier.

To make these connections, we recommend high quality RCA cables, which are available at
your local car audio retailer. Run signal wires away from electrical wires to avoid
possibility of induced noise from the car's electrical system (i.e. popping noises or engine
noise). Please note that when making these connections the signal inputs correspond with
the speaker outputs.

REMOTE

0

dB

15
BASS BOOST

PHASE

XOVER

SOURCE

FREQ Hz

30

IN
OUT

MIN

MAX

PWR \

NORMAL

PROT

SLAVE

250

R

L

-

-

+

+

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE IN

SLAVE OUT

INPUT

L

R

LL

RR

SUBSONIC

10

80

30

125

FREQ Hz

BASS
BOOST

FREQ Hz

HIGH LEVEL CONNECTIONS (OPTIONAL)

High Level inputs have been included to connect the amplifier to a radio without low-level
outputs (i.e. factory radio). This connection will allow you to connect directly to the
speaker output of the radio with out the need of an external adapter.

Determine the type of radio you have and make one of the following connections.

CAUTION! Before making any connections determine the type of radio to avoid possible

damage to amplifier and/or radio.

ENGLISH

REMOTE

0

dB

15
BASS BOOST

PHASE

XOVER

SOURCE
FREQ Hz
30

IN
OUT

MIN

MAX

PWR \

NORMAL

PROT

SLAVE

250

R

L

-

-

+

+

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

X-OVER

SLAVE IN

SLAVE OUT

BASS

BOOST

INPUT

94.794.7

POWER

10

80

30

125

SUBSONIC

FREQ Hz

BASS

BOOST

FREQ Hz

BLACKBLACK
WHITE/BLACKWHITE/BLACK

WHITEWHITE

GRAY/BLACKGRAY/BLACK

GRAYGRAY

FLOATING GROUND RADIO (MOST COMMON TYPE)

L

R

(NOT USED)(NOT USED)
RIGHT -RIGHT -

RIGHT +RIGHT +

LEFT -LEFT -
LEFT +LEFT +

10

80

30

125

SUBSONIC

FREQ Hz

BASS

BOOST

FREQ Hz

XOVER

REMOTE

PHASE

FREQ Hz
30

IN

NORMAL

OUT

250

MIN

0

dB

MAX

15

GAIN

BASS BOOST

COMMON GROUND RADIO

10

SOURCE

SLAVE

PROT

R

L

-

-

+

+

SPEAKER
LEVEL IN
.4V - 12.2V

SLAVE OUT

X-OVER

BASS
BOOST

94.794.7

L

R

POWER

BLACKBLACK

GROUNDGROUND

INPUT

SLAVE IN

PWR \

WHITE/BLACK NOT USEDWHITE/BLACK NOT USED

WHITEWHITE

RIGHT +RIGHT +

GRAY/BLACK NOT USEDGRAY/BLACK NOT USED

GRAYGRAY

LEFT +LEFT +

MGA AMPLIFIERS

SPEAKER CONNECTIONS

Make the speaker connections using speaker wire that is at least 12 gauge or heavier.

As with any audio component, proper phasing of the amplifier and speakers is essential for
strong bass response. When connecting, make sure that positive (+) from the amplifier is
connected to the positive (+) of the speaker, and the same for negative (-).

ENGLISH

1

2 Ohm

2 Ohm

(1 Ohm Minimum)

(1 Ohm Minimum)

CHIL

MIN

--

++

1
MIN

FUSE 30A X 4

CHIL

FUSE 30A X 4

+12V GND

TURN-ON

+12V GND

TURN-ON

2 Ohm

2 Ohm

(1 Ohm Minimum)

(1 Ohm Minimum)

++

++

Dual 4 Ohm WooferDual 4 Ohm Woofer

--

--

*2 Ohm load recommended for best efficiency

and to optimize the power output.

CAUTION! The amplifiers must see a 1 Ohm load or higher for the subwoofer(s). Any lower

than the above mentioned impedance will cause the amplifiers to overheat and possibly cause
permanent damage to the amplifiers.

11

MULTIPLE AMPLIFIER CONNECTIONS

When running multiple amplifier’s in large systems all amplifiers can be linked together so
the primary master amplifier can control all amplifiers. In the following example we show
four amplifiers controlled by one master ampilifer.

Master amplifier’s crossover, bass boost
and subsonic adjustments control
for the master and slave amplifiers.

RR

LL

MASTER AMPLIFIER

1.) Set Phase to IN

2.) Set Source to NORMAL

XOVER

SUBSONIC

REMOTE

SOURCE

PHASE

FREQ Hz

FREQ Hz

10

IN
OUT

80

BASS

BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

INPUT

SLAVE IN

30

PWR \

NORMAL

PROT

L

SLAVE

250

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

1

CHIL

MIN

FUSE 30A X 4

++

+12V GND

TURN-ON

*2 Ohm

1 Ohm Minimum

ENGLISH

SLAVE AMPLIFIER

1.) Set Phase to OUT

2.) Set Source to SLAVE

SLAVE AMPLIFIER

1.) Set Phase to OUT

2.) Set Source to SLAVE

SLAVE AMPLIFIER

1.) Set Phase to OUT

2.) Set Source to SLAVE

XOVER

SUBSONIC

REMOTE

SOURCE

PHASE

FREQ Hz

FREQ Hz

10

IN
OUT

80

250

BASS
BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

SUBSONIC

REMOTE

PHASE

FREQ Hz

FREQ Hz

30

10

IN
OUT

80

250

BASS
BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

SUBSONIC

REMOTE

PHASE

FREQ Hz

10

IN
OUT

80

BASS
BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

*2 Ohm load recommended for best efficiency

and to optimize the power output.

INPUT

SLAVE IN

30

PWR \

NORMAL

PROT

L

SLAVE

R

L

-

-

+

+

R

SPEAKER

LEVEL IN

.4V - 12.2V

GAIN

SLAVE OUT

XOVER

SOURCE

INPUT

SLAVE IN

PWR \

NORMAL

PROT

L

SLAVE

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

XOVER

SOURCE

FREQ Hz

INPUT

SLAVE IN

30

PWR \

NORMAL

PROT

L

SLAVE

250

R

L

-

-

+

+

R

SPEAKER
LEVEL IN

.4V - 12.2V

GAIN

SLAVE OUT

1

CHIL

MIN

1

CHIL

MIN

1

CHIL

MIN

FUSE 30A X 4

FUSE 30A X 4

FUSE 30A X 4

++

+12V GND

TURN-ON

*2 Ohm

1 Ohm Minimum

++

+12V GND

TURN-ON

*2 Ohm

1 Ohm Minimum

++

+12V GND

TURN-ON

*2 Ohm

1 Ohm Minimum

CAUTION! The amplifiers must see a 1 Ohm load or higher for the subwoofer(s). Any lower

than the above mentioned impedance will cause the amplifiers to overheat and possibly cause
permanent damage to the amplifiers.

12

MGA AMPLIFIERS

BRIDGED DUAL-AMP CONNECTIONS

BASS BOOST

0

15

dB

30

250

+

-

-

L

R

SPEAKER
LEVEL IN

GAIN

L

R

INPUT

XOVER

FREQ Hz

MIN

MAX

REMOTE

+

30

125

BASS

BOOST

SLAVE IN

10

80

SUBSONIC

FREQ Hz

SLAVE OUT

SOURCE

SLAVE

NORMAL

PHASE

IN
OUT

.4V - 12.2V

FREQ Hz

PWR \
PROT

BASS BOOST

0

15

dB

30

250

+

-

-

L

R

SPEAKER
LEVEL IN

GAIN

L

R

INPUT

XOVER

FREQ Hz

MIN

MAX

REMOTE

+

30

125

BASS

BOOST

SLAVE IN

10

80

SUBSONIC

FREQ Hz

SLAVE OUT

SOURCE

SLAVE

NORMAL

PHASE

IN
OUT

.4V - 12.2V

FREQ Hz

PWR \
PROT

LL

RR

MGA’s Briged Dual-amp technology gives you the flexibility to combine the power of two of
the same model amplifiers to double the output power into one speaker load.

IMPORTANT! IN BRIDGED DUAL-AMP OPERPATION, BOTH AMPLIFIERS MUST BE THE SAME

MODEL OF EQUAL POWER. TWO MGA11000H’s OR TWO MGA11500H’s.

ENGLISH

Master amplifier’s crossover, bass boost
and subsonic adjustments control
both the master and slave amplifier.

Phase is set to

the IN position.

Source is set to

the NORMAL position.

MASTER AMPLIFIER

SLAVE AMPLIFIER

SUBSONIC

FREQ Hz

10

80

BASS

BOOST

30

125

FREQ Hz

Phase is set to

the OUT position.

SUBSONIC

FREQ Hz

10

80

BASS

BOOST

30

125

FREQ Hz

XOVER

REMOTE

0
dB
15

BASS BOOST

PHASE

SOURCE

FREQ Hz

30

IN

NORMAL

OUT

SLAVE

250

L

+

MIN

MAX

.4V - 12.2V

GAIN

Source is set to

the SLAVE position.

XOVER

REMOTE

0
dB
15

BASS BOOST

PHASE

SOURCE

FREQ Hz

30

IN

NORMAL

OUT

SLAVE

250

L

+

MIN

MAX

.4V - 12.2V

GAIN

-

SPEAKER
LEVEL IN

-

SPEAKER
LEVEL IN

PROT

R

-

+

SLAVE OUT

SLAVE IN

PWR \
PROT

R

-

+

SLAVE OUT

INPUT

L

R

RR

LL

L

R

INPUT

SLAVE IN

PWR \

Do not use this section of the slave amplifier.
Once the amplifier is put in the Slave mode, the
Master amplifier takes over all signal input and
filtering including crossover, input level, bass
and subsonic control.

13

Connect (-) Speaker Terminals Together with 10 Guage Wire Minimum

MASTER

AMPLIFIER

1

CHIL

MIN

FUSE 30A X 4

+12V GND

TURN-ON

++

*4 Ohm

2 Ohm Minimum

1

CHIL

MIN

FUSE 30A X 4

SLAVE

AMPLIFIER

CAUTION! In bridged operation, the amplifiers must see a 2 Ohm load or higher for the

subwoofer(s). Any lower than the above mentioned impedance will cause the amplifiers to
overheat and possibly cause permanent damage to the amplifiers.

When running multiple sets of bridged amplifier’s in large systems all amplifiers can be
linked together so the primary master amplifier can control all amplifiers in the set. In the
following example we show two sets of bridged amplifiers controlled by one master
ampilifer.

Master amplifier’s crossover, bass boost
and subsonic adjustments control
both the master and slave amplifiers.

RR

LL

MASTER AMPLIFIER

1.) Set Phase to IN

2.) Set Source to NORMAL

XOVER

SUBSONIC

REMOTE

SOURCE

PHASE

FREQ Hz

FREQ Hz

10

IN
OUT

80

BASS

BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

INPUT

SLAVE IN

30

PWR \

NORMAL

PROT

L

SLAVE

250

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

1

CHIL

MIN

FUSE 30A X 4

+12V GND

TURN-ON

++

ENGLISH

+12V GND

TURN-ON

SLAVE AMPLIFIER

1.) Set Phase to OUT

2.) Set Source to SLAVE

SLAVE AMPLIFIER

1.) Set Phase to IN

2.) Set Source to SLAVE

SLAVE AMPLIFIER

1.) Set Phase to OUT

2.) Set Source to SLAVE

XOVER

SUBSONIC

REMOTE

SOURCE

PHASE

FREQ Hz

FREQ Hz

30

10

IN
OUT

80

250

BASS

BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

SUBSONIC

REMOTE

PHASE

FREQ Hz

FREQ Hz

30

10

IN
OUT

80

250

BASS

BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

SUBSONIC

REMOTE

PHASE

FREQ Hz

30

10

IN
OUT

80

250

BASS

BOOST

MIN

0

30

dB

MAX

125

15

FREQ Hz

BASS BOOST

*4 Ohm load recommended for best efficiency

and to optimize the power output.

INPUT

SLAVE IN

PWR \

NORMAL

PROT

L

SLAVE

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

XOVER

SOURCE

INPUT

SLAVE IN

PWR \

NORMAL

PROT

L

SLAVE

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

XOVER

SOURCE

FREQ Hz

INPUT

SLAVE IN

PWR \

NORMAL

PROT

L

SLAVE

R

L

-

-

+

+

R

SPEAKER
LEVEL IN
.4V - 12.2V

GAIN

SLAVE OUT

14

1

CHIL

MIN

1

CHIL

MIN

FUSE 30A X 4

FUSE 30A X 4

+12V GND

TURN-ON

*4 Ohm

2 Ohm Minimum

+12V GND

TURN-ON

++

1

CHIL

MIN

FUSE 30A X 4

+12V GND

TURN-ON

*4 Ohm

2 Ohm Minimum

MGA AMPLIFIERS

REMOTE BASS CONTROL MODULE

Before connecting the remote, it will be necessary to find a mounting location that will be
easy to access for adjustment. Once you select your mounting location, you will need to
run the control wire from the remote to the amplifier. To avoid possibility of induced

noise from the car's electrical system (i.e. popping noises or engine noise), run the cable
from the remote to the amplifier away from the car's electrical wiring.

ENGLISH

REMOTE

0
dB
15

BASS BOOST

PHASE

XOVER

SOURCE

FREQ Hz

30

IN
OUT

MIN

MAX

PWR \

NORMAL

PROT

SLAVE

250

R

L

-

-

+

+

SPEAKER
LEVEL IN

.4V - 12.2V

GAIN

SLAVE IN

SLAVE OUT

INPUT

L

R

10

80

30

125

SUBSONIC

FREQ Hz

BASS

BOOST

FREQ Hz

DIAGNOSTIC LIGHTING

The MGA11000H and MGA11500H are equipped with diagnostic lighting to display the operation
status of the amplifier. The following shows the lighting mode and the description of the
amplifier’s condition.

Top Light On and Blue Power LED On = Amplifier is running normally.

Top Light On and end Panel Lights are Alternating between Red and Blue = Amplifier is in thermal protection.

Top Light Blinking Slowly and Red Power light Blinking out of synch with Top Light = Over Voltage Reduce the

input Voltage.

Top Light Blinking Quickly and Red Panel Light Blinking in Synch with Top Light = Short Circuit Protection.

Top Light and Red panel Light Blinking Three (3) times with a pause = Repeated shorts are detected. Remove

short circuit and wait 5 minutes for this error condition to clear. The condition can also be cleared by
removing the main power, for example pulling the fuse.

15

ADJUSTING THE X-OVER, BASS AND SUBSONIC FILTER

This control allows you to select the woofer(s) to be in phase with

The subsonic filter has been provided to filter

out unwanted subsonic bass frequencies below

the audible range of the woofer(s). This feature

helps to improve the amplifiers overall

performance since power is not wasted

reproducing frequencies beyond the speakers

operating range. This feature works in

conjunction with the Low-pass crossover to

provide band-pass filtering.

Adjust the desired center frequency

for the bass boost

SUBSONIC

FREQ Hz

10

80

BASS

BOOST

30

125

FREQ Hz

the rest of the system (Defualt position) or out of phase if needed

to adjust for out of phase conditions. Please note: when running

multiple amplifiers and/or combining the power of 2 amplifiers,

please use settings explained on pages 13 and 14 of the manual.

REMOTE

0

dB

15
BASS BOOST

XOVER

PHASE

FREQ Hz
30

IN

OUT

250

You can add up to 15dB of bass boost

at the selected bass boost frequency.

Select the crossover

point for your speakers.

FINE TUNE THE SYSTEM

Fine tune the amplifier's input sensitivity.

The gain sensitivity control for the “MGA”

MIN

MAX

GAIN

not a volume control and you will not get more power out of the amplifier in the maximum
position! It may seem to deliver more output, but actually the system is only playing louder
faster as you turn the volume control on the radio. Ideally, to properly level match the
system the goal is to achieve maximum output from the amplifier without distortion at
about 3/4 of the volume control.

amplifier is located on the side panel. This gain control
has been included to allow adjustment to properly
match the output of the radio. This is one of the most
misunderstood adjustments. By rotating the control in
the clockwise direction, the amplifier‘s input will
become more sensitive and the music will play louder. This is

ENGLISH

To determine if the amplifier’s gain is set properly, turn the system on and slowly increase
the volume control. You should be able to use about 3/4 volume before the system gets loud
but not distorting. It is very important when making these adjustments that you do not
over drive the speakers (at point of distortion) this will cause permanent damage to the
speakers. If you are unable to achieve 3/4 volume before distortion you will need to
adjust gain control (in this case you would reduce the gain). The gain controls should be
adjusted very slowly. It may help to have another person to assist you by adjusting the
gain controls while you listen for distortion.

16

MGA AMPLIFIERS

TROUBLE SHOOTING THE SYSTEM

We have put together this trouble-shooting guide if you experience problems after
installing the amplifier. Please keep in mind that the majority of problems incurred are
caused by improper installation and not the equipment itself. In addition, there are many
components in the system that could cause various signal problems such as inducted
electrical noise and engine noise.

Before you can properly address the problem, you must first find the component that is
causing the problem. This will take patience and a process of elimination.

ENGLISH

LOOK FOR.... SOLUTION

No Output

Blown fuse Replace
Bad RCA Cable(s) Replace
+12V at power terminal Check connection
+12V at remote terminal Check connection
Grounding point clean and tight Check for ground w/meter
Head Unit's fader not in center position Set to center position

Low Output

Check level adjustments Re-adjust
Bad RCA cable(s) Replace
Improper level matching Re-adjust

Engine Noise

Grounding points are clean and tight Check for ground w/meter
Ground all components at same point Ground at same point
Try different grounding point Change for better ground
Bad RCA cable(s) Replace
Use High Quality shielded RCA cables Rejects inducted noise
Low Vehicle charging system and/or battery Fix and/or replace

Protection L.E.D. Illuminated (Please see page 15 for Diagnostic Lighting conditions)

Speaker short Check speakers connection

for short circuit

Speaker grounding out Make sure speaker wires

do not touch chassis ground

Impedance too low Check speaker impedance

(Min 2 ohm Stereo, 4 Mono)

Overheating Check mounting location

for Adequate air Circulation
Speaker impedance too low

17