Wet Sounds STX Micro 4

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Features and Specs

Product Research

Features

Marine Amplifier: This Wet Sounds Stealth STX Micro series amplifier features a completely sealed die-cast aluminum chassis to keep out water and dirt, making them ideal for motorcycles, ATVs, and other power sports. In addition, all of the connections enter the amplifier through sealed ports on each end of the amplifier. The Stealth STX amplifiers have a tiny footprint, only 9-1/4" long and 4" wide, which allows you to mount them in the limited space found in ATV or UTV vehicles.

Class D Amplification: The STX Micro-4 features state-of-the-art Class D amplification which provides ample power in a small space for your marine, motorcycle, or off-road vehicle. The amp's power output is as follows:

• 80 watts x 4 @ 4 Ohms
• 130 watts x 4 @ 2 Ohms
• 280 watts x 2 @ 4 Ohms bridged

Control Panel: The top-mounted control panel is protected by a cover to help keep the controls dry, and to prevent unwanted adjustments. The cover screws can be removed with the supplied 2.5 mm Allen wrench. The rotary controls and slide switches require the use of a narrow flat-head screwdriver (not supplied) to make adjustments. This 4-channel amplifier features independent controls for Channels 1+2 and 3+4:

• Crossover Selection Switch (CH1+2, CH3+4): The switches let you set each crossover to Low-pass (LPF), High-pass (HPF), or Flat (crossover disabled).
• Sensitivity (CH1+2, CH3+4): Independent Sensitivity controls for each pair of channels let you match the amplifier to the source unit. The input sensitivity of the amp ranges from 150mV (Min) to 7V (Max).
• Crossover Frequency (CH1+2, CH3+4): The amplifier's crossover is continuously variable from 40 Hz to 400 Hz, and has a slope of 12dB/octave.
• Channel Select: You can set the input selector to 2CH or 4CH. In 2-channel mode, all 4 speakers will play using only the Front input. In 4-channel mode, the front and rear speakers are independent, and must receive both a front and rear input. When bridging the amplifier, the switch should be in 2CH mode.
• Power Protect: This LED will light up red at start-up, then change to blue if all connections are OK. In the event the amp should go into protect mode, from short circuit or over/under voltage), the LED will glow red until the problem is resolved.

Connections: The STX Micro-4's wiring connections are on both ends of the amplifier, and in some cases are not terminated. The power and speaker connections to the amp are sealed internally, so you will need to splice them to your wires. The connections are as follows:

• Power: The amplifier's 8 AWG power wire features an in-line waterproof fuse holder with two 25A ATO fuses inserted. The power wire is terminated with a ring terminal.
• Ground: The 8 AWG ground is terminated with a ring terminal.
• Remote Turn-on: The 16 AWG ground is not terminated.
• Speaker Outputs: The amp's 4-channel speaker outputs are 16 AWG wires with no terminals.
• Inputs: The amp features two stereo 3.5mm (female) inputs located on the opposite end from the power/speaker wires. The inputs have a wide enough gain range to accept a direct input from a smartphone, tablet, or other portable device. The terminal features a splash-resistant cover.
• Output: A stereo 3.5mm (female) output is provided for passing through the audio signal to another amplifier or an amplified subwoofer.

Additional Specifications:

• Frequency Response: 10 Hz to 40 kHz
• Signal-to-Noise Ratio (1 watt): > 95 dBa
• Total Harmonic Distortion: 0.05%
• Input Sensitivity Range: 150 mV to 7.0 V

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