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Description

Sundown Audio SDX-1200.1

Sundown Audio SDX-1200.1 is a high-power mono Class D amplifier designed for subwoofer applications, delivering deep, clean, and controlled bass with minimal heat. Its efficient Class D design ensures strong output while the compact, durable chassis allows for easy installation in tight spaces. The amplifier includes adjustable low-pass and subsonic filters, comprehensive protection circuitry (thermal, over/under-voltage, short-circuit, DC-offset), and LED indicators for monitoring and safe operation, making it ideal for dedicated subwoofer setups or enhancing full-system car audio with powerful low-end performance.


Specifications

Specifications
Product Sku
SDX-1200.1
Amplifier Type
Weather Proof Mono
1 Ohm RMS Power
1,200 x 1 @ 1 ohm RMS
2 Ohm RMS Power
825 x 1 @ 2 ohms RMS
4 Ohm RMS Power
450 x 1 @ 4 ohms RMS
Operation Voltage
11.5 – 15V
Recommended Fuse
120A
Signal / Noise Ratio
83dB
Variable 12dB Low Pass Filters
50Hz – 250Hz
Dimensions
Length
12.25″
Width
7″
Height
2.125″

 


Feature

  • 1,200 x 1 @ 1 ohm RMS
  • 825 x 1 @ 2 ohms RMS
  • 450 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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Questions and Answers

Q1: What is the power output of the SDX-1200.1?

A1:
• 1200 W × 1 @ 2 Ω
• 800 W × 1 @ 4 Ω

Q2: What amplifier class/design does it use?
A2: The SDX-1200.1 is a mono Class D amplifier, offering high efficiency, low heat, and strong subwoofer output.
Q3: Does it have adjustable filters for tuning?
A3: Yes, it features a variable low-pass filter (40–250 Hz) and a subsonic filter (10–40 Hz) for precise subwoofer tuning.
Q4: What protection features are included?
A4: The amplifier includes thermal protection, over/under-voltage protection, short-circuit protection, DC-offset protection, and LED indicators for safe operation.
Q5: What are the installation and electrical specifications?
A5:
• Input Sensitivity: up to ~6 V
• Signal-to-Noise Ratio: 92 dB
• Operating Voltage: 10.5–15.5 V DC
• Compact, durable heat-sink chassis designed for tight installations

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