เพาเวอร์แอมป์ QSC RMX1450A Power Amplifier

เครื่องขยายเสียงกลางแจ้ง QSC RMX1450A  มีกำลังขับ 500 วัตต์ ที่ 4 โอมห์ 1400 Watt Bridgeable Mono Mode 4Ω LED Indicators for Power, Signal, Clip Built-In Protection Circuits


฿29,000.00 ฿24,650.00



เครื่องขยายเสียง QSC RMX1450A 500W 4 Ohms

The 500 watts per channel 4Ω QSC RMX1450a Low-Z Power Amplifier is a 2RU rack mountable amplifier designed for live sound reinforcement applications. The amplifier features two Class AB output channels that can operate in either stereo or mono bridge mode. The unit operates on a standard 15 amp plug and utilizes high-current toroidal transformers for less noise and better performance when pushing a 2 ohm load. To reduce distortion, the amplifier utilizes independent user-defeatable clip limiters and includes LED indicator lights to show the presence of the signal and when the signal is clipping.

The chassis of the amplifier is designed with front to rear cooling vents and includes selectable low-frequency filters at 30 Hz and 50 Hz to protect speakers from bottoming out and improve headroom when driving mid and high frequencies. The front panel of the unit features two gain control knobs for easy access and each channel is protected by a dedicated DC and thermal overload protection circuit. For inputs, the back of the unit accepts both balanced 1/4″ and XLR inputs. For outputs, the unit features both Neutrik Speakon and touch-proof binding post connections.


  • Stereo or bridged-mono power amplifier
  • Compact chassis is less than 16″ deep, leaving you more space in the back of your rack
  • Flexible I/O with XLR and 1/4″ balanced inputs, plus binding posts and speakON outputs
  • Front-mounted gain controls give you fast, easy access to your signal levels
  • Switchable 30Hz/50Hz low-cut filter lets you fine-tune your system for maximum headroom
  • Signal and Clip LED indicators let you monitor performance at a glance
  • Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
  • Defeatable clipping limiter protects speakers against signal spikes


Power Rating Stereo mode (both channels driven)

8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 260 W

8 Ω EIA 1,000 Hz at 0.1% THD: 300 W

4 Ω FTC 20 to 20,000 Hz at 0.1% THD: 400 W

4 Ω EIA 1,000 Hz at 0.1% THD: 500 W (0.5% THD)

2 Ω EIA 1,000 Hz at 0.1% THD: 700 W


Bridge-mono mode 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 800 W

Bridge-mono mode 8 Ω EIA 1,000 Hz at 0.1% THD: 900 W

Bridge-mono mode 4 Ω EIA 1,000 Hz at 0.1% THD: 1400 W

Signal-to-Noise Ratio > -100 dB
Distortion SMPTE-IM: < 0.01%


For 8 and 4 Ω load

THD for 20 to 20,000 Hz at 10 dB below rated power: less than 0.03%

THD for 1,000 Hz at full rated power: less than 0.03%

Input Sensitivity 1.15 V (+3.4 dBU) at 8 Ω
Voltage Gain 40x (32 dB)
Circuit Type Class AB
Power Consumption 6.0 A


1/8 power pink noise at 4Ω 9.6 A

Damping Factor > 300 at 8Ω
Input Impedance 10 kΩ balanced

20 kΩ unbalanced

Frequency Response 20 to 20,000 Hz +0/-1 dB -3 dB points

5 Hz to 50,000 Hz (LF filter bypassed/8 Ω)

Input Connections Active balanced 3-pin Euro-style detachable terminal block

2 x 3-pin XLR

2 x 1/4″ TRS

Cooling Continuously variable speed fan, back-to-front airflow
Output Connectors Touch-proof binding posts

2 x Neutrik Speakon

Controls Front Panel AC switch

Channel 1 gain knob

Channel 2 gain knob

Controls Rear Panel 10-position DIP switch
Indicators Power-on: green LED

Signal: yellow LED (1 per channel)

Clip: red LED (1 per channel)

Protect: red LED (1 per channel)

Power Requirements 100, 120, 230 VAC at 50 to 60 Hz (factory configured)
Protection Amplifier: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads


Load: Turn-on/off muting/AC coupling (850, 1450)/ Triac Crowbar (1050HD, 2450, 4050HD, 5050) on each channel

Rack Spaces 2
Plug Type 100/120V: NEMA 5-15


230V: CEE7/7

Dimensions (H x W x D) 3.5 x 19.0 x 15.9″ (89.0 x 482 x 404 mm)
Weight 40.0 lb (18.2 kg)
Packaging Info
Package Weight 42.2 lb
Box Dimensions (LxWxH) 24.0 x 21.5 x 6.0″

โทร. : 022031821, 026414744 ext 13, 020423530
สายด่วน : 081-2399040, 084-7696296, 089-6915832

Line : @soundspacethai

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