



Sundown Audio SDX-90.2 2-Channel Weatherproof Amplifier
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Subwoofer Wiring Diagram
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- Power — 175W x 1 @ 4Ω, 300W x 1 @ 2Ω, 400W x 1 @ 1Ω
- Class — Class-D, water-resistant
- Filters — Variable 12dB low-pass (50Hz–250Hz), variable bass boost
- Build — Heavy cast aluminum heat sink, removable control cover
- Protection — Thermal, voltage, speaker short, DC-offset
This Listing Includes: (1) Sundown Audio SDX-90.2 2-Channel Weatherproof Amplifier
The water-resistant SDX-90.2 is a compact Class-D amplifier built for cars, UTVs, and open-air vehicles, delivering 175 watts at 4 ohms, 300 watts at 2 ohms, or 400 watts at 1 ohm. A variable 12dB low-pass filter (50Hz–250Hz) and variable 12dB bass boost sit beneath a sealed, removable control cover, and DC auto-sensing turn-on simplifies installation. A robust cast aluminum casing provides superior heat dissipation and shields the electronics from the elements, while thermal, voltage, speaker-short, and DC-offset circuitry protects the amp. A wired remote control is included; to access audio settings, unscrew the badge with an allen key. Authorized Sundown Audio dealer at JS Ultimate Sounds. Free shipping on orders $99+.
Features
- Water-resistant Class-D design for powersports and daily drivers
- Variable 12dB low-pass filter: 50Hz–250Hz
- Variable 12dB bass boost
- DC auto-sensing turn-on with removable audio control cover
- Heavy cast aluminum heat sink with included wired remote
Specifications
| RMS @ 4Ω | 175W x 1 |
| RMS @ 2Ω | 300W x 1 |
| RMS @ 1Ω | 400W x 1 |
| Class | D |
| Low-Pass Filter | 50Hz–250Hz (12dB) |
| Bass Boost | 12dB, variable |
| Weatherproofing | Water resistant |
| Protection | Thermal, voltage, speaker short, DC-offset |


