Marine amplifier AM marine 4-channel 500 W

This Fusion marine amplifier is a 4-channel 500 W model designed for marine environments. Its main features include:

A MOSFET amplifier design stable at 2 Ohms.A class AB design for powerful and clear amplification.High-quality marine-grade nickel-plated inputs and outputs for RCA connections, as well as stainless steel components.A printed circuit board with conformal coating for enhanced protection against salt air and moisture.A marine-grade chassis with end and bottom plates in stainless steel.An RCA "pass-through" output for multi-amplifier installations.

This Fusion marine amplifier delivers a total power output of 500 Watts distributed across 4 channels.

Yes, this amplifier is designed for the marine environment. It features a PCB with conformal coating for enhanced protection against salt air and moisture. Additionally, its chassis is marine-grade with top and bottom end plates made of stainless steel.

This amplifier is equipped with nickel-plated RCA connections for the audio inputs (channels 1 & 2, channels 3 & 4) and a "pass-through" RCA output for connecting secondary amplifiers.

The amplifier offers several sound adjustment options:

A crossover selector (OFF, LP for low-pass, HP for high-pass). A variable bass boost adjustment (Bass Boost) from 0 to +18 dB at 45 Hz. A variable subsonic filter that cuts sub-bass frequencies below the set point at 18 dB/octave. An input level control (gain) to adjust the input signal.

The power and status LED indicators show whether the amplifier has been properly powered and if any faults are present.

For extended amplifier lifespan, choose a location with adequate airflow (at least 2.5 inches of clearance around the amplifier) and protection from moisture. The amplifier must never be mounted upside down, as this would compromise heat dissipation.

It is recommended to pre-drill mounting holes with a 3 mm or 9/64 inch diameter bit. Carefully inspect the mounting area to avoid electrical wires, vacuum lines, or fuel lines.

For power and ground connections, a 4 AWG cable is recommended. It is critical to use the same cable gauge for ground as for power.

The amplifier must be wired directly to the battery. The ground connection (GND) must be the first wire connected, directly to an appropriate ground point. The power connection (+12V) must be the last wire connected, to the battery's positive terminal, via an inline fuse or circuit breaker located as close as possible to the battery.

The remote control terminal (REM) must be connected to a switched +12V source. This allows the amplifier to be turned on and off with the main unit. If the main unit has no dedicated remote output, an electric antenna wire or a switched +12V ACC power supply can be used. A minimum gauge of 18 AWG is recommended for this connection.

Fusion amplifiers are designed to operate within a DC voltage range of 10 to 16 volts. Before any connection, the boat's electrical system must be checked with a multimeter to ensure the battery voltage is between 12 and 13.8 volts.

To correctly set the gain level:

Turn the level control (LEVEL) on the amplifier to the minimum.
Increase the main unit’s volume to two-thirds of its maximum, ensuring that the BASS and TREBLE settings are at zero.
Slowly adjust the amplifier’s level control until the desired volume is reached without audible distortion.
This control is not a volume control, but an input level adjustment.

The MS-AM504 amplifier requires two 25 amp fuses (2x 25A).

This amplifier can handle a minimum impedance of 2 ohms in stereo mode and 4 ohms in bridged mono mode. An impedance that is too low could trigger the amplifier's protection mode or damage it.

Yes, due to its stable 2-ohm stereo design, you can connect an additional pair of speakers in parallel, i.e., 2 speakers per channel at 2 ohms, for a total of 8 speakers.

Yes, this amplifier has an RCA "pass-through" (RCA Line Out) output that allows you to connect multiple amplifiers to improve audio system performance.

For a subwoofer, set the crossover selector to LP (Low Pass) and the crossover frequency to 100 Hz or lower to filter out mid to high frequencies. For speakers under 6 inches, set the crossover selector to HP (High Pass) and the control to 65 Hz or higher to filter out low frequencies.

The initial limited warranty for this Fusion marine product extends for the first 12 months from the date of purchase. This warranty covers material and manufacturing defects.

No, the limited warranty applies only to the original consumer buyer of the product and is neither transferable nor assignable to any subsequent buyer or end user.