Garmin Fusion Apollo Series User manual
Fusion®Apollo™Series Multichannel Amplifiers Installation
Instructions
Important Safety Information
WARNING
See the Important Safety and Product Information guide in the product box for product warnings and other
important information.
This device must be installed according to these instructions.
Disconnect the vessel's power supply before beginning to install this device.
CAUTION
Continuous exposure to sound pressure levels over 100 dBA may cause permanent hearing loss. The volume is
typically too loud if you cannot hear people speaking around you. Limit the amount of time you listen at high
volume. If you experience ringing in your ears or muffled speech, stop listening and have your hearing checked.
To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling,
cutting, or sanding.
NOTICE
YOU MUST NOT USE THIS AMPLIFIER WITH ANY THIRD-PARTY MARINE AUDIO SYSTEMS. This amplifier is
compatible only with Fusion DSP-enabled marine audio equipment and may cause damage to third-party
speakers due to the amplifier power output.
When drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.
This device is designed for a 12 Vdc power source. Connecting to a 24 Vdc or larger power source may
damage the device.
It is strongly recommended that you have your audio system installed by a professional installer to ensure
optimum performance.
You must read all installation instructions before beginning the installation. If you experience difficulty during
the installation, go to support.garmin.com/ for product support.
After installing an audio system, you should run the connected speakers and subwoofers at low to medium
volumes for the first few hours of use. This helps to improve the overall sound by gradually loosening up the
moving components of new speakers and subwoofers, such as the cone, spider, and surround. See the
installation instructions provided with your speakers, because there may be more details about the
recommended time for each model.
GUID-12BC9614-2882-4A6F-A581-2894A8B33AAD v1May 2021
Tools Needed
• Drill and 3 mm (1/8 in.) drill bit (or a drill bit appropriate for your provided mounting hardware and mounting-
surface material).
• Screwdrivers:
◦5.5 mm (7/32 in.) flat (slotted)
◦3 mm (1/8 in.) flat (slotted)
◦#2 Phillips
◦#0 Phillips
• Wire cutter
• Wire stripper
• Wires and cables:
◦4 AWG (21.1 mm2) copper-coated aluminum wire (power)
◦16 AWG (1.31 mm2) copper-coated aluminum speaker wire (speakers)
◦14 AWG (2.08 mm2) copper-coated aluminum speaker wire (subwoofer)
NOTE: You may need thicker wire for longer runs (Speaker Wire Gauge Guide, page 13).
◦20 AWG (0.52 mm2) wire (amplifier turn-on signal)
◦Dual RCA cable (1 per stereo pair) (Signal and Speaker Connection Considerations, page 10)
◦Single RCA cable (1 per mono channel) (Signal and Speaker Connection Considerations, page 10)
• Cable ties (optional)
2 Fusion Apollo Series Installation Instructions
Mounting Considerations
CAUTION
In high ambient temperatures and after extended use, the device enclosure may reach temperatures deemed
dangerous to touch. To avoid possible personal injury, the device must be installed in a location where it will
not be touched during operation.
NOTICE
This device should be mounted in a well-ventilated location that is not exposed to extreme temperatures or
conditions. The temperature range for this device is listed in the product specifications. Extended exposure to
temperatures exceeding the specified temperature range, in storage or operating conditions, may cause device
failure. Extreme-temperature-induced damage and related consequences are not covered by the warranty.
If you are mounting the device on fiberglass, when drilling the pilot holes, use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer
when the screws are tightened.
This device is designed for installation only in a dry location. Installing this device in a location where it may
come in contact with more than occasional dripping water or become submerged may result in damage. Water
damage is not covered by the warranty.
You can mount this device using one of two methods:
• You can use the included bracket and pan head screws to mount the device (Installing the Mounting Bracket,
page 4).
◦Mounting the device using the bracket allows you to quickly attach and detach the device from the
mounting surface.
◦Mounting the device using the bracket requires clear space above the mounting location to allow for
connecting the device to the bracket and installing the locking wedge.
• You can use the included flat-head, countersunk screws to mount the device directly to the mounting surface
(Mounting the Device Directly to the Surface, page 7).
◦Mounting the device directly to the surface does not allow you to quickly detach the device.
◦Mounting the device directly to the surface does not require as much clear space above the mounting
location, so it may be a more suitable choice for installing in a smaller space.
When selecting a mounting location, observe these considerations:
• You must mount the device in a location that does not interfere with the fuel tank or electrical wiring.
• You must mount the device in a location where it is not exposed to water.
• You must mount the device in a location where it is not exposed to fuel or fuel vapor.
• You must mount the device in a location with adequate ventilation where it is not exposed to extreme
temperatures.
• If you mount device in an enclosed space, you should install a cooling fan with appropriate ducts to aid in
airflow.
• You should mount the device so that the cables can be connected easily.
• To avoid interference with a magnetic compass, you should mount the device the specified distance away
from a compass. This distance is listed in the specifications section.
• You must not mount the device in close proximity to other navigation-critical equipment, antennas, or radio-
communication equipment on the vessel.
Fusion Apollo Series Installation Instructions 3
Installing the Mounting Bracket
NOTICE
Pan-head screws are included, but they may not be suitable for the mounting surface. If you provide different
mounting hardware, you must not use fasteners with a countersunk head. Hardware with a countersunk head
will damage the mounting bracket.
Before you install the mounting bracket, you must select a mounting location and determine what screws and
other mounting hardware are needed for the surface.
Mounting the device using the mounting bracket allows you to quickly attach and remove the device as needed.
1Use the included template to verify that the mounting location has sufficient clearance to install the device.
NOTE: You must install the bracket with the release tab pointing up to properly secure the amplifier in the
bracket.
2Using a 3 mm (1/8 in.) bit or a bit appropriate for your provided hardware and mounting-surface material, drill
the pilot holes marked on the template.
NOTICE
If you are mounting the device on fiberglass, when drilling the pilot holes, use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat
layer when the screws are tightened.
3Using the included pan-head screws or other pan-head mounting hardware, secure the bracket to the
mounting surface.
NOTICE
You must use pan-head screws, because countersunk screws will damage the bracket.
4 Fusion Apollo Series Installation Instructions
Connecting the Device to the Mounting Bracket
You must secure the mounting bracket to the surface before you can connect the device.
1Hold the device over and slightly above the mounting bracket.
2Place the device onto the bracket and pull down until the tab audibly clicks.
3Insert the wedge over the tab on the top of the mounting bracket it and push down to lock the device in the
bracket.
4Install the included screw covers in the four holes on the top of the amplifier (optional).
Fusion Apollo Series Installation Instructions 5
Removing the Device from the Mounting Bracket
1Lift up to remove the wedge, which unlocks the tab on the mounting bracket.
2Press the tab on the mounting bracket, and lift up on the amplifier to disconnect it from the mount .
6 Fusion Apollo Series Installation Instructions
Mounting the Device Directly to the Surface
If you are installing the device in a location with limited space, or you do not want to use the bracket, you can
mount the device directly to the surface.
NOTE: Countersunk screws are provided to mount the device directly to the surface. If you choose to use your
own hardware to mount the device directly to the surface, countersunk heads are recommended.
1Using the provided template, mark the pilot hole locations for the four mounting holes on the device,
observing these considerations:
• Because you are not using the bracket, you do not need to observe the upper clearance line on the
template.
• You must observe the lower clearance line on the template so that you have the space needed to make
the cable connections.
2Using a 3 mm (1/8 in.) bit or a bit appropriate for your provided hardware and mounting-surface material, drill
the pilot holes.
NOTICE
If you are mounting the device on fiberglass, when drilling the pilot holes, use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat
layer when the screws are tightened.
3Using the provided countersunk screws, secure the device to the mounting surface.
4Install the included screw covers in the four holes on the top of the amplifier (optional).
Connection Considerations
NOTICE
You should turn off the audio system before making any connections to the amplifier. Failure to turn off the
audio system may result in damage to the audio system.
All terminals and connections must be protected from contact with the vessel chassis and with each other.
Improper terminal or wire contact may result in damage to the audio system.
NOTE: You must connect the amplifier to the AMPLIFIER ON wire from the stereo for the amplifier to turn on
and off with the stereo.
Fusion Apollo Series Installation Instructions 7
Port Identification
MS-AP41200 4-Channel Amplifier
MS-AP61800 6-Channel Amplifier
MS-AP82400 8-Channel Amplifier
Power block port (Connecting to Power, page 9)
Zone 1 speaker block port (Signal and Speaker Connection Considerations, page 10)
Zone 1 RCA input
Zone 2 speaker block port
Zone 2 RCA input
Zone 3 speaker block port
Zone 3 RCA input
Zone 4 speaker block port
Zone 4 RCA input
8 Fusion Apollo Series Installation Instructions
Connecting to Power
CAUTION
The wiring (not included) from the power source to the amplifier must run through an inline fuse or circuit
breaker (not included) as close to the power source as possible. You must connect the positive wire to the fuse
or circuit breaker. Connecting the amplifier to power without an inline fuse or circuit breaker may result in a fire
if there is a short in the cable.
If the amplifier is powered by a battery, use a breaker or fuse rated to protect a cable of the gauge used to
connect the amplifier to the battery. See the American Boat & Yacht Council (ABYC) standards for the required
fuse or breaker rating.
If the amplifier is powered by a source other than a battery, use a breaker or fuse rated no higher than the max
current of the power source.
You should use 4 AWG (21.1 mm2) copper-coated aluminum wire (not included) to connect the amplifier to
power and ground for most installations. For long power-cable runs, you should consider using larger-diameter
(smaller gauge number) wire to minimize power loss. If you are using pure copper wire instead of copper-
coated aluminum, you can use a smaller-diameter (larger gauge number) wire becase of the increased material
conductivity.
You must connect the REM terminal on the amplifier block to either the AMPLIFIER ON wire from the connected
stereo or to a constant 12 Vdc power source using a switch. Connecting to the AMPLIFIER ON wire is
recommended to avoid a popping sound when the stereo turns on or off.
1Route the 2 AWG (33.6 mm2) copper-coated aluminum wire (not included) to the amplifier and to a ground
location on the boat.
2Using a 5 mm (7/32 in.) flat (slotted) screwdriver, connect the ground cable to the GND terminal on the power
connection block.
3Connect the other end of the ground wire to the ground location.
4Route the 2 AWG (33.6 mm2) copper-coated aluminum wire (not included) to the amplifier and to the power
source, and select an option:
• Install a properly rated in-line fuse on the power wire as close to the power source as possible.
• Identify or install a circuit breaker, as close to the power source as possible, for use with the amplifier
power wire.
5Using a 5 mm (7/32 in.) flat (slotted) screwdriver, connect the power (+) wire to the PWR terminal on the
power connection block.
6Route a 20 AWG (0.52 mm2) wire from the amplifier to the AMPLIFIER ON wire on the stereo or to a 12 Vdc
power source through a switch.
Fusion Apollo Series Installation Instructions 9
NOTE: The amplifier and the stereo must connect to the same physical power ground location for the
AMPLIFIER ON signal to function properly.
7Using a 4 mm (5/32 in.) flat (slotted) screwdriver, connect the 20 AWG (0.52 mm2) wire to the REM terminal
on the power connection block.
NOTICE
Do not connect the power terminal block to the amplifier at this time. Make all of the other connections to the
stereo and speakers before completing the connection to power (Completing the Connections, page 14).
Signal and Speaker Connection Considerations
When connecting your stereo and speakers to the amplifier, observe the following considerations:
• All speakers connect to the amplifier using terminal blocks (Connecting Speakers to the Amplifier, page 11).
• When connecting a subwoofer to the amplifier, you must use the high-power bridge adapter (Connecting a
Subwoofer to the Amplifier, page 12).
• Each set of zone speaker terminals on the amplifier is paired to the RCA inputs for that zone.
• Each channel supports a nominal 4 Ohm speaker load impedance, and a 2 Ohm minimum speaker load
impedance.
• You can connect either a zone line out or a subwoofer line out from the stereo to any of the zone RCA inputs
on the amplifier.
• You should use the proper gauge speaker wire noted in the speaker wire gauge guide to connect speakers
and subwoofers to the amplifier (Speaker Wire Gauge Guide, page 13).
• You should observe the zone and polarity markings for each channel when connecting speakers to the
amplifier. The speaker ports for each zone are marked with negative (-) and positive (+) for the left (L) and
right (R) channels. When connecting a subwoofer, the speaker terminal polarity is marked on the high-power
bridge adapter.
In the following example, a single 4 Ohm subwoofer is connected to ZONE 2 using the high-power bridge
bracket, and pairs of 4 Ohm speakers are connected to the right and left channels for the other two zones.
In this example, you must connect the single RCA subwoofer line out connector from the stereo to the
uncovered L RCA port for ZONE 2 on the amp , and you must connect the two RCA zone line out connectors
from the stereo to the other two zone RCA ports on the amplifier .
10 Fusion Apollo Series Installation Instructions
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