QSC RMX1450a 2 Channel Power Amplifier

Full Description

Professional quality performance

Incorporating road-proven QSC design, the RMX 1450a 2 Channel Power Amplifier is a premium quality, versatile piece of equipment. Featuring high-current torodial transformers, it has a greater 2-ohm power and lower noise than earlier models. Independent user-defeatable clip limiters even reduce distortion for a cleaner sound. The amp produces 300w at 8 ohms, 500w at 4 ohms, 700w at 2 ohms and a potential output of 1400w with a 4 ohm bridge. It even includes signal and clip LED indicators so that you can closely monitor your sound mid-performance.

Unbeatable design

Thanks to the RMX 1450a’s lightweight and compact size, it saves desk space and is ideal for mobile entertainers to pack up and go. Highly portable and easy to store, it’s a convenient way to bring power to your stage. Gain controls are mounted to the front of the amp for easy access during performances. Selectable low-frequency filters protect the speakers and increase headroom, ensuring the safety and reliability of your equipment set up. And each channel has independent DC and thermal overload protection which automatically protects the amp and speakers from overheating.

Features

• Compact size – up to 2500 watts in two rack spaces, or 5000 watts in three rack spaces
• High-current toroidal transformers, for greater 2-ohm power and low noise
• Independent user-defeatable clip limiters reduce distortion
• Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
• The 4000-watt RMX4050a operates on a standard 15 amp plug (120V)
• Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
• The RMX4050a’s particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.
• Balanced 1/4″ (6.3 mm) TRS, XLR, and barrier strip inputs
• Touch-proof binding post and Neutrik Speakon® outputs
• Front mounted gain controls for easy access
• Signal and clip LED indicators for monitoring performance
• Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers

Specifications

Power per Channel, Stereo Mode (both channels driven)

• 8Ω, FTC 20 Hz-20 kHz, 0.1 THD: 260W
• 8Ω, EIA 1 kHz, 0.1 THD: 300W
• 4Ω, FTC 20 Hz-20 kHz, 0.1 THD: 400W
• 4Ω, EIA 1 kHz, 0.1 THD: 500W (0.5 THD)
• 2Ω, EIA 1 kHz, 1 THD: 700W

Power, Bridge-Mono Mode

• 8Ω, FTC 20 Hz-20 kHz, 0.1 THD: 800W
• 8Ω, EIA 1 kHz, 0.1 THD: 900W
• 4Ω, EIA 1 kHz, 1 THD: 1400W
• Signal to Noise (20 Hz-20 kHz): -100 dB
• Distortion (SMPTE-IM): Input Sensitivity at 8Ω: 1.15V (+3.4 dBu)
• Voltage Gain: 40x (32 dB)
• Output Circuitry: Class AB
• Current Draw (120 V AC):
  • Typical, 1/8 power pink noise at 4Ω*: 6.0 A
  • Severe, 1/3 power pink noise at 4Ω*: 9.6 A
• AC Mains Plug:
  • 100/120V: NEMA 5-15
  • 230V: CEE7/7
• Weight: Net: 40 lb (18.2 kg) / Shipping: 46 lb (20.9 kg)
• Distortion (typical):
  • 20 Hz-20 kHz, 10 dB below rated power: 1 kHz and below, full rated power:
  • Frequency Response: 20 Hz-20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed, 8Ω)
  • Damping Factor (1 kHz and below): > 300 at 8Ω
  • Input Impedance: 10 kΩ unbalanced; 20 kΩ balanced
  • Input Stage Clipping: 10 V rms (+22 dBu)
  • Cooling: Continuously variable speed fan, back-to-front air flow
  • Connectors (each channel):
    • Input: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+)
    • Output: Touch-proof binding posts; Neutrik Speakon®
  • Controls:
    • Front: AC switch; Channel 1 & 2 gain knobs
    • Rear: 10-position DIP switch
  • LED Indicators: Power on: Green; Signal: Yellow (1 per channel); Clip/Protect: Red (1 per channel)
  • Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
  • Load Protection: Turn-on/off muting; AC coupling (850, 1450); Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
  • Dimensions: 3.5″ (8.9 cm) tall; 2 rack spaces
  • Power Requirements: 100, 120, 230 V AC (factory configured), 50-60 Hz