Description

Sundown Audio SDX-400.1
Sundown Audio SDX-400.1 is a high-efficiency mono Class D amplifier designed specifically for subwoofers, delivering clean, deep, and powerful bass while keeping heat minimal. Its compact and durable chassis allows easy installation in tight spaces, and the amplifier includes adjustable low-pass and subsonic filters, full protection circuitry (thermal, over/under-voltage, short-circuit, DC-offset), and LED indicators for safe, stable operation. It is ideal for dedicated subwoofer setups or enhancing a full car audio system with strong, controlled low-end performance.
Specifications
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Product Sku
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SDX-400.1 |
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Amplifier Type
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1 Ohm RMS Power
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2 Ohm RMS Power
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4 Ohm RMS Power
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Operation Voltage
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Recommended Fuse
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Signal / Noise Ratio
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Variable 24dB Low Pass Filters
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Length
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Width
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Height
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Feature
- 400 x 1 @ 1 ohm RMS
- 300 x 1 @ 2 ohms RMS
- 175 x 1 @ 4 ohms RMS
- Variable 12dB low-pass filter: 50Hz – 250Hz
- Variable 12dB bass boost
- DC auto-sensing turn on
- Thermal, voltage, speaker short, and dc-offset protection circuitry
- Water resistant
- Heavy cast aluminum heat sink
- Removable audio control cover
- Wired remote control
About The Product
Get ready to experience the power and versatility with the water-resistant SDX amp! Perfect for your car, UTV, or any open-air vehicle, this compact yet mighty Class D amplifier delivers exceptional fidelity. Neatly protected beneath a sealed cover, a full suite of audio controls allow you the freedom to adjust your sound to perfection. A robust aluminum casing provides superior heat dissipation, and a shield from the elements. Whether its powersports or in your daily driver – with the SDX amp, you get great sound – for years of fun in any weather!



















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