Description:
Product Description
The QSC RMX1450A is a professional 2-channel audio amplifier designed for live sound reinforcement. With 500W power per channel at 4Ω, 430W power per channel at 2Ω, 300W power per channel at 8Ω, 1400W bridged mode at 4Ω mono, 900W bridged mode at 8Ω mono, class AB amplification, high-current toroidal transformer, independent clip limiters per channel, selectable 30Hz/50Hz low-frequency filters, 20Hz-20kHz frequency response, THD ≤0.03%, damping factor >300 at 8Ω, XLR, 1/4" TRS, and barrier strip inputs, Speakon and binding post outputs, 2RU rack, variable-speed fan, DC, thermal, and overload protection, LED power, signal, and clip indicators, 18.2 kg (40 lbs) weight, 482 x 404 x 89mm (19 x 15.9 x 3.5") dimensions, 3-year limited manufacturer warranty, sold per unit, the QSC RMX1450A is the perfect solution for professional sound system amplification.
Class AB Amplification: Power and Efficiency
High-Current Toroidal Transformer
The QSC RMX1450A features:
- Class AB amplification: Balance between efficiency and quality
- High-current toroidal transformer: Lower noise and better performance
- 500W power at 4Ω: Robust performance at standard impedance
- 430W power at 2Ω: Low-load capacity
- 300W power at 8Ω: Impedance flexibility
Bridged Mode: Amplified Mono Power
1400W Mono at 4Ω for Maximum Power
The QSC RMX1450A offers:
- 1400W bridged mode at 4Ω: Amplified mono power
- 900W bridged mode at 8Ω: High impedance option
- Channel combination: Double power in mono
- Configuration versatility: Stereo or mono as needed
- Powerful sound reinforcement: For demanding applications
Clip Limiters: Distortion Protection
Independent Control per Channel
The QSC RMX1450A provides:
- Independent clip limiters: One for each channel
- Distortion reduction: Automatic protection against clipping
- Load compensation: Adaptation to impedance variations
- Driver protection: Especially for high frequencies
- Switchable: Enable/disable as needed
Low-Frequency Filters: Speaker Protection
Selectable 30Hz or 50Hz per Channel
The QSC RMX1450A includes:
- Selectable low-frequency filters: 30Hz or 50Hz
- Over-excursion prevention: Protects speaker cones
- Greater power availability: For nominal frequency range
- Distortion reduction: Less load on the amplifier
- Independent control: Each channel configurable
Professional Inputs and Outputs: Versatile Connectivity
XLR, TRS, Speakon, and Binding Posts
The QSC RMX1450A offers:
- XLR inputs: Standard professional connection
- 1/4" TRS inputs: Connection flexibility
- Barrier strip inputs: Secure screw connection
- Speakon outputs: Professional speaker connection
- Binding post outputs: Alternative connection
Protection and Monitoring: Guaranteed Safety
DC, Thermal, and Overload Protection
The QSC RMX1450A provides:
- Independent DC protection: For each channel
- Thermal protection: Prevents overheating
- Overload protection: Automatic and reliable
- LED indicators: Power, signal, clip, protection
- Real-time monitoring: Status display
Technical Specifications
| Specification | Detail |
|---|---|
| Model | QSC RMX1450A |
| Type | Professional audio amplifier |
| Channels | 2 channels |
| Amplification Class | Class AB |
| 8Ω Stereo Power | 300W per channel (FTC 20-20kHz) |
| 4Ω Stereo Power | 500W per channel (EIA 1kHz) |
| 2Ω Stereo Power | 430W per channel |
| 8Ω Bridged Mono Power | 900W |
| 4Ω Bridged Mono Power | 1400W |
| Frequency Response | 20Hz - 20kHz (+0/-1dB) |
| THD (Total Harmonic Distortion) | ≤0.03% (rated power) |
| IMD (Intermodulation Distortion) | ≤0.01% (SMPTE) |
| Damping Factor | >300 at 8Ω |
| SNR (Signal-to-Noise Ratio) | >-100 dB |
| Transformer | High-current toroidal |
| Clip Limiters | Independent per channel, switchable |
| Low-Frequency Filters | Selectable 30Hz or 50Hz per channel |
| Inputs | XLR, 1/4" TRS, Barrier Strip |
| Outputs | Speakon (NL4), Binding Posts |
| Front Controls | Independent gain per channel |
| LED Indicators | Power, Signal, Clip, Protection |
| Protections | DC, Thermal, Overload, Short-circuit |
| Cooling | Variable-speed fan |
| Rack Format | 2 RU (Rack Units) |
| Width | 482mm (19") |
| Depth | 404mm (15.9") |
| Height | 89mm (3.5") |
| Weight | 18.2 kg (40 lbs) |
| Power Input | 100/120/230 VAC, 50/60Hz |
| Current Draw | 6A |
| Warranty | 3-year limited manufacturer warranty |
| Sale | Per unit |
Ideal for
The QSC RMX1450A is ideal for live sound reinforcement systems, audio installations in concert halls and theaters, churches and places of worship, corporate events and conferences, nightclubs and entertainment venues, sound installations in restaurants and bars, recording studios with monitoring, individuals looking for reliable professional amplification, users who require versatile power at different impedances, sound technicians who value protection and monitoring, and any application requiring professional audio amplification with power, clarity, and reliability.