Features

4-Channel Marine Amplifier: The Infinity Marine 3004A is a 4-channel amplifier designed for the marine environment. Its compact chassis and small footprint allow it to fit into boats and watercraft where space is limited.

Power Specifications: The Marine 3004A can provide the following power (@ 14.4V):

• 75 watts RMS x 4 @ 4-ohms
• 100 watts RMS x 4 @ 2-ohms
• 200 watts RMS x 2 @ 4-ohms

Other Specifications:

• Frequency Response: 20 Hz - 20 kHz
• Signal-to-Noise Ratio: >80 dB
• THD + N: <1% (@ rated power)

Class H Design: The Infinity Marine 3004A is equipped with high-performance Class H amplifier topology. Class H is designed to provide sound quality approaching Class AB, while providing Class D type efficiency and low-power consumption.

Low Noise & Distortion: The Marine 3004A amplifier features balanced differential inputs to ensure low noise and distortion, even at high output levels. This also makes it less susceptible to line induced, radiated engine noise.

Protection Circuitry: The amp features 3-way protection, and will shut itself down in the following cases: Overheating, Over/Under Voltage, and a Short Circuit in a speaker or speaker wire.

Power/Protection LED: The amplifier features a Power/Protection LED on the input side of the unit. The Power LED illuminates Green when the amplifier is supplied power and will illuminate Red when the amplifier goes into protect-mode.

Hidden Control Panel: The top panel of the Marine 3004A can unsnap and slide off to access all of the amp's controls.

• Gain: Both front and rear pairs of channels have their own rotary control to match the level of the input signal
• Filter & Frequency: Both front and rear channels can have a crossover applied to them. A 3-way switch for each lets you select: HPF (high-pass), LPF (low-pass), or FULL (full-range). This variable 12dB per octave filter includes a Freq dial that can be set between 32Hz and 320Hz.
• Turn-On Mode: Lets you select whether you are using high- or low-level input signals.
  • DC: Allows the amp to power on/off with speaker-level signals.
  • REM: Allows the amp to power on/off when the REM terminal gets +12V from the headunit's remote output. This should be selected when using the RCA low-level inputs.
• Input Level: Working in conjunction with the Turn-On Mode, this 3-way switch lets you set the input sensitivity range:
  • Lo: Set to this when using RCA low-level inputs.
  • HI1 & HI2: These settings provide 2 levels of input sensitivity when using speaker-level inputs. If the amp doesn't power on when set to HI1, setting it to HI2 will allow it to be activated.

Preamp & Speaker Input: Two pairs of RCA jacks are used for both low-level and high-level signals. If using high-level, four speaker wire-to-RCA adapters are provided. These feature an RCA plug on one end and 2 wire-ports with set-screws on the other end, accepting speaker wire up to 18-gauge.

Preamp Outputs: A pair of RCA output jacks are provided to pass the incoming signals out to additional amplifiers, without the need for RCA splitters.

Speaker Output: Eight set-screw terminals for connecting speaker wires; accommodating up to 8-gauge (16-gauge minimum recommended).

Power Connections:

• +12V: Set screw terminal for power wire from battery; handles up to 4-gauge wire (8-gauge minimum recommended)
• Remote: Set screw terminal for remote turn-on lead; handles up to 8-gauge wire (18-gauge minimum recommended)
• Ground: Set screw terminal for ground; handles up to 4-gauge wire (8-gauge minimum recommended)

Fuses: 2 Slots for 30A ATO fuses (installed). Two spare 30A fuses are also provided.