QSC RMX 4050HD Power Amplifier

QSC RMX 4050HD Power Amplifier delivers professional-grade audio amplification with unmatched power, durability, and precision. Engineered for live sound reinforcement, installations, and studio use, the RMX 4050HD is designed for demanding applications where high output and reliability are critical.

Whether powering large PA systems, driving full-range speaker arrays, or ensuring high-fidelity reproduction in theaters, houses of worship, and studios, this amplifier combines efficiency, power, and rugged design.

Key Features

• High Power Output:

  • Stereo: 850W @ 8Ω, 1300W @ 4Ω, 2000W @ 2Ω

  • Bridged Mono: 2600W @ 8Ω, 4000W @ 4Ω

• Class H Architecture: Optimizes efficiency by reducing heat and maximizing power delivery.

• Heavy-Duty Design: Handles demanding 2Ω loads with ease — a rare feature for amplifiers in this class.

• Rugged Build: Compact chassis (<16″ deep) built for touring and fixed installations.

• Flexible Connectivity: Balanced XLR and 1/4″ TRS inputs, binding post, and Neutrik SpeakON outputs.

• Protection Circuitry: User-defeatable clip limiters, selectable low-frequency filters (30Hz/50Hz), DC and thermal overload protection.

• User-Friendly Controls: Front-mounted gain knobs and LED indicators for signal, clip, and protect status.

Technical Specifications

• Stereo Output Power:

  • 8Ω: 850W per channel

  • 4Ω: 1300W per channel

  • 2Ω: 2000W per channel

• Bridged Mono Output:

  • 8Ω: 2600W

  • 4Ω: 4000W

• Frequency Response: 20 Hz – 20 kHz ±0.5 dB

• THD: <0.03%

• Signal-to-Noise Ratio: >105 dB

• Input Sensitivity: 1.2V RMS

• Input Impedance: Balanced: 10 kΩ | Unbalanced: 5 kΩ

• Damping Factor: >500 (20 Hz–400 Hz)

• Slew Rate: 30 V/μs

Design and Construction

• Front Panel: Power switch, independent gain controls, LED indicators for signal, clip, and protect.

• Rear Panel: Balanced XLR and 1/4″ TRS inputs, binding post and SpeakON outputs, mode switches (stereo/parallel/bridged mono), low-frequency filter switches.

• Cooling: Variable-speed fan with rear-to-front airflow for efficient heat dissipation.

Applications

• Live Sound: Concerts, festivals, clubs — high output and reliability for demanding environments.

• Permanent Installations: Auditoriums, churches, conference halls — robust, long-term performance.

• Studio Use: Clean, precise amplification for monitoring and mixing.

Advantages and Benefits

• Premium Sound Quality: Low THD, high slew rate, wide frequency response for crystal-clear audio reproduction.

• Durability: Rugged chassis and advanced protection circuitry ensure reliability in demanding settings.

• Versatility: Flexible connectivity and selectable filters for varied audio setups.

• Cost-Effective: Professional-grade performance at competitive prices in Kenya.

Practical Use Cases

• Houses of Worship: Clear, powerful sound for sermons and live music.

• Theaters and Auditoriums: Full coverage and clarity for spoken word and music.

• Clubs and Bars: Heavy-duty power for high-energy performances.