Sundown Audio SDX-100.6 6-Channel Weatherproof Amplifier
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Subwoofer Wiring Diagram
Select your configuration to view possible wiring combinations.
Loading wiring diagrams…
Diagrams are on our wiring diagram page.
- Power — 100W x 6 @ 4Ω, 150W x 6 @ 2Ω, 300W x 3 @ 4Ω bridged
- Class — Class-D, 6-channel, water-resistant
- Filters — Variable 12dB HPF/LPF per channel pair, x1/x20 multiplier
- Build — Heavy cast aluminum heat sink, removable control cover
- Protection — Thermal, voltage, speaker short, DC-offset
This Listing Includes: (1) Sundown Audio SDX-100.6 6-Channel Weatherproof Amplifier
The water-resistant SDX-100.6 is a compact Class-D amplifier built for cars, UTVs, and open-air vehicles, delivering 100 watts x 6 at 4 ohms, 150 watts x 6 at 2 ohms, or 300 watts x 3 bridged at 4 ohms. Each channel pair has dedicated variable 12dB high-pass and low-pass filters with x1/x20 frequency multipliers, letting you tailor mids, highs, and lows independently. DC auto-sensing turn-on, a sealed removable control cover, and a robust cast aluminum casing deliver easy setup, superior heat dissipation, and weather protection, all backed by thermal, voltage, speaker-short, and DC-offset circuitry. 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
- Ch. 1–2 variable 12dB high-pass and low-pass: 15Hz–500Hz or 300Hz–10kHz
- Ch. 3–4 variable 12dB high-pass (15Hz–500Hz) and low-pass (30Hz–500Hz or 600Hz–10kHz)
- Ch. 5–6 variable 12dB low-pass: 30Hz–500Hz
- x1/x20 crossover multipliers with removable control cover and optional wired remote
Specifications
| RMS @ 4Ω | 100W x 6 |
| RMS @ 2Ω | 150W x 6 |
| RMS @ 4Ω Bridged | 300W x 3 |
| Class | D |
| High-Pass Filter (Ch. 1–2) | 15Hz–500Hz or 300Hz–10kHz (12dB) |
| High-Pass Filter (Ch. 3–4) | 15Hz–500Hz (12dB) |
| Low-Pass Filter (Ch. 1–2) | 15Hz–500Hz or 300Hz–10kHz (12dB) |
| Low-Pass Filter (Ch. 3–4) | 30Hz–500Hz or 600Hz–10kHz (12dB) |
| Low-Pass Filter (Ch. 5–6) | 30Hz–500Hz (12dB) |
| Crossover Multiplier | x1/x20 |
| Weatherproofing | Water resistant |
| Protection | Thermal, voltage, speaker short, DC-offset |
