QSC RMX Series RMX 2450 Power Amplifier

The QSC RMX Series RMX 2450 Power Amplifier is a powerful, versatile, and reliable piece of audio equipment designed to meet the demands of professional audio applications. As part of QSC’s renowned RMX Series, the RMX 2450 offers high power output, exceptional audio performance, and robust build quality, making it ideal for a wide range of uses, including live sound reinforcement, permanent installations, and studio work.

Power and Performance

• High Power Output: The RMX 2450 delivers substantial power, with 500 watts per channel into 8 ohms, 750 watts per channel into 4 ohms, and 1200 watts per channel into 2 ohms. In bridged mono mode, it provides an impressive 1500 watts into 8 ohms and 2400 watts into 4 ohms.
• Efficient Operation: The amplifier’s Class AB+B architecture combines the efficiency of Class B with the linearity of Class AB, ensuring high-quality audio reproduction with minimal distortion.
• High Current Capacity: The RMX 2450 is capable of delivering high current to drive even the most demanding speaker loads, maintaining clarity and definition even at high output levels.

Build Quality and Reliability

• Rugged Construction: Built with a robust steel chassis, the RMX 2450 is designed to withstand the rigors of both touring and fixed installations. Its durable construction ensures long-term reliability and consistent performance.
• Efficient Cooling: The amplifier features a sophisticated cooling system with a variable-speed fan and rear-to-front airflow, preventing overheating and ensuring stable operation under heavy use.
• Protection Circuitry: Comprehensive protection mechanisms guard against DC faults, infrasonic frequencies, thermal overload, and short circuits, safeguarding both the amplifier and connected speakers.

Connectivity and Controls

• Balanced XLR and 1/4″ TRS Inputs: These inputs offer flexible connectivity options, making it easy to integrate the RMX 2450 into various audio systems.
• Binding Post and SpeakON Outputs: The amplifier provides secure and reliable connections to speakers, with SpeakON connectors ensuring a robust connection capable of handling high power levels.
• User-Friendly Controls: The front panel includes detented gain controls for precise adjustment, along with signal and clip LED indicators for easy monitoring of performance and status.

• Low-Frequency Filters: Selectable 30 Hz and 50 Hz low-cut filters help remove unwanted low-frequency rumble and protect speakers from over-excursion.
• High Slew Rate and Damping Factor: The amplifier boasts a high slew rate for rapid signal response and a high damping factor for tight, controlled bass performance.

Power Ratings

• Stereo Mode (per channel):
  • 8 ohms: 500 watts
  • 4 ohms: 750 watts
  • 2 ohms: 1200 watts
• Bridged Mono Mode:
  • 8 ohms: 1500 watts
  • 4 ohms: 2400 watts

Frequency Response

• 20 Hz to 20 kHz: ±0.5 dB

Signal-to-Noise Ratio

• 100 dB: Below rated output (20 Hz to 20 kHz, unweighted)

Total Harmonic Distortion (THD)

• <0.05%: (20 Hz to 20 kHz, 10 dB below rated output)

Damping Factor

• >300: (20 Hz to 400 Hz)

Input Sensitivity and Impedance

• 1.23V RMS: for 8 ohms
• 10 kΩ: balanced
• 5 kΩ: unbalanced

Slew Rate

• 30 V/μs

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Exterior Design

The QSC RMX 2450 Power Amplifier features a sleek, professional design with a rugged metal chassis that ensures durability and reliability. The front panel is equipped with intuitive controls and indicators, while the rear panel provides all necessary connectivity options.

Front Panel

• Power Switch: Located on the left side for easy access.
• Gain Controls: Detented knobs for each channel allow for precise adjustment of input levels.
• LED Indicators: Signal, clip, and protect indicators for each channel provide at-a-glance monitoring of the amplifier’s status.

Rear Panel

• Input Connectors: Balanced XLR and 1/4″ TRS inputs offer flexible connectivity options.
• Output Connectors: Binding posts and SpeakON connectors provide secure speaker connections.
• Mode Switches: Allow selection of stereo, parallel, and bridged mono modes.
• Low-Frequency Filter Switches: Selectable 30 Hz and 50 Hz low-cut filters help remove unwanted low-frequency rumble.

Live Sound Reinforcement

The QSC RMX 2450 is an excellent choice for live sound reinforcement applications, providing the power and reliability needed for demanding environments. Its high power output and robust design make it suitable for a variety of venues, from small clubs to large outdoor events.

Permanent Installations

For permanent installations, the RMX 2450 offers reliable performance and long-term durability. Its efficient cooling system ensures stable operation even in environments with limited ventilation, and its protection circuitry provides peace of mind by safeguarding against common issues such as thermal overload and short circuits.

Studio Use

In the studio, the RMX 2450 excels in providing clean, high-fidelity amplification for monitoring systems. Its low total harmonic distortion and high signal-to-noise ratio ensure accurate audio reproduction, making it a valuable tool for mixing and mastering engineers.

High-Quality Sound

The RMX 2450’s Class AB+B topology and high slew rate contribute to its excellent sound quality, characterized by clear highs, detailed mids, and tight, controlled bass. Its low total harmonic distortion ensures that your audio remains clean and accurate, even at high power levels.

Reliability and Durability

With its rugged construction and comprehensive protection circuitry, the RMX 2450 is built to last. Whether used in a mobile rig or a permanent installation, it delivers consistent performance and can withstand the demands of professional use.

Versatility

The RMX 2450’s versatile connectivity options, mode selection, and low-frequency filters make it suitable for a wide range of applications. From live sound and installations to studio monitoring, this amplifier can handle diverse audio needs with ease.

Cost-Effective

Despite its professional-grade features and performance, the RMX 2450 is priced competitively, offering excellent value for money. It provides high-end audio quality and reliability at a fraction of the cost of some other professional amplifiers.