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The DS18 SXE‑4000.4D is a high‑power, compact Class D 4‑channel amplifier designed for serious car audio upgrades. With a full‑range design and robust power output—4 × 275 W RMS at 4 Ω, 4 × 430 W RMS at 2 Ω, and up to 2 × 750 W bridged at 4 Ω (≈ 4,000 W peak)—it provides flexible channel options for both speaker and subwoofer configurations.

This unit is brand‑new, factory sealed, and ready for installation into modern vehicle audio systems. Its compact footprint and efficient Class D architecture make it suitable for tight installs without sacrificing high output.

Key Benefits

• High output across all four channels: 275W ×4 @4Ω, 430W ×4 @2Ω, and 750W ×2 bridged @4Ω—ideal for powering front/rear speakers and even a sub channel.
• Full‑range channel support with variable HPF/FULL/LPF crossover settings and input gain control, enabling precise tuning for speakers or subs.
• Compact dimensions (approx. 10.6″ × 5.5″ × 1.8″) and lightweight build (~4.5‑5 lb) make it easier to install in tight spaces like under seats or custom enclosures.
• Robust protection features including thermal, short‑circuit, low‑voltage, and clipping detection ensure reliability in demanding mobile audio environments.

Technical Specifications

• Channels: 4
• RMS Power: 4 × 275 W at 4 Ω; 4 × 430 W at 2 Ω; 2 × 750 W bridged at 4 Ω
• Peak Total Power: circa 4000 W
• Frequency Response: 10 Hz – 20 kHz
• Signal‑to‑Noise Ratio: ~90 dB
• Efficiency at 4 Ω: ~86%
• Dimensions (approx): 10.6″ W × 5.5″ D × 1.8″ H (269 mm × 140 mm × 48 mm)
• Weight: ~4.5 lb (≈ 2.05 kg)

Installation & Compatibility

This amplifier is ideal for upgrading your vehicle's factory system or building a high‑output speaker setup. You can use the four channels to power front and rear speakers or bridge two channels for higher power to subs. Mount it in a well‑ventilated location, secure wiring with appropriate gauge, and use an external fuse near the battery. Adjust the input gain and crossover settings to match your head unit and speakers. Because of its power capacity and complexity, professional installation is recommended for optimal performance and warranty support.

FAQS

• What can a DS18 4000-watt amplifier power?
  It can run high-performance subwoofers or multiple speakers with strong, clean output.
• Is a DS18 4000-watt amp good for bass systems?
  Yes, it delivers the power needed for deep, loud bass in serious audio builds.
• Does a DS18 4000-watt amp require upgraded wiring?
  Absolutely—proper wiring and electrical support are essential for safe performance.
• Where can I buy a DS18 4000-watt amp?
  Livewire Audio carries powerful DS18 amplifiers with nationwide U.S. delivery.