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The FD18K4 is a high-performance 4-channel Class D power amplifier engineered for professional audio systems that demand precision, power, and intelligent signal control. Delivering a total output of 18,000 watts, it combines cutting-edge FIR filtering technology with a fully integrated DSP engine, enabling exceptional sound clarity, phase accuracy, and system optimization.Designed for modern sound reinforcement, the FD18K4 ensures consistent performance across large-scale venues while giving audio engineers full control over system tuning and protection.
• High-resolution FIR filters for precise phase alignment and linear frequency response
• Minimizes distortion and improves clarity in line array and subwoofer systems
• Built-in DSP includes:
– Parametric EQ
– Crossovers (HPF / LPF) – Delay & alignment
– Limiters & protection processing
– Polarity & gain control
• Per-channel independent tuning for complex system configurations
Perfect for professional system optimization and high-end audio tuning
• 4 × 1800W @ 8Ω
• 4 × 2800W @ 4Ω
• 4 × 4500W @ 2Ω
• Bridge Mode: up to 9000W × 2 @ 4Ω
Provides powerful and stable output for subwoofers, line arrays, and full-range speaker systems.
• High efficiency with low heat dissipation
• Compact 1U lightweight chassis for easy installation
• Ideal for touring racks and fixed installations
• Over-voltage / under-voltage protection
• DC, short-circuit, and overload protection
• Intelligent thermal management
Ensures maximum reliability and long-term system stability.
• Wide voltage range: 90–260V AC
• Stable operation worldwide
• Touring Sound Systems & Live Concerts
• Line Array + Subwoofer Systems
• Stadiums, Theaters & Auditoriums
• Clubs & Large-Scale Installations
• Houses of Worship
• Professional Audio Integration Projects
MODEL | FD18K4 |
8R Stereo Power | 4x1800W |
4R Stereo Power | 4x2800W |
2R Stereo Power | 4x4500W |
8R Bridge Monon Power | 2x5600W |
4R Bridge Monon Power | 2x9000W |
Frequency Response | 20Hz-20KHz±0.5dB |
THD+N 1KHz 1W 8R | <0.1% |
Signal to Noise Ratio 1KHz | >110dB |
Channel Separation 1KHz | >80dB |
Class | D |
Protection | In-Short, DCP,OVP,UVP,OCP,OTP |
Operating Voltage | 90V-260V |
Input Sensitivity | 0.77V |
Input Impedance | 20Kohm Balanced / 10Kohm Unbalanced |
DSP Function | MUTE, Polarity, Gain, Delay, Limiter, Mixer, FIR, PEQ, ALLPASS, XOver, |
DSP Control | USB |
FIR Filter | 4*2048 Taps |
Display | 2.0 " |
Dimensions | 483x445x44mm |
Net Weight(kg) | 11.5 |
