RMX5050a

High-current toroidal transformers for greater 2 Ohmpower and low noise
Independent user-defeatable clip limiters reducedistortion
Selectable low-frequency filters (30 Hz or 50 Hz)protect speakers and increase headroom
Balanced 1/4″ (6.3 mm) TRS, XLR, and barrier stripinputs
Touch-proof binding post and Neutrik Speakon® outputs

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เครื่องขยายเสียง ยี่ห้อ QSC รุ่น RMX5050a

The QSC RMX5050A 5000W Professional Power Amplifier is a 3RU unit designed for high powered live sound reinforcement applications. The amplifier can operate in stereo, dual mono, or mono bridged modes and can handle output impedances between 2 and 8 ohms. The unit is rated at 1100W per channel at 8 ohms between 20 and 20,000 Hz, 1800W per channel at 4 ohms between 20 and 20,000 Hz, 2500W per channel at 2 ohms between 20 and 20,000 Hz, and 3600W at 8 ohms in bridged mono mode between 20 and 20,000 Hz. The amplifier utilizes high-current toroidal transformers for greater power and lower noise when driving 2 ohms loads.

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-inch (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
3-year warranty plus optional 3-year extended service contract

Model	RMX 850a	RMX 1450a	RMX 2450a	RMX 4050a	RMX 5050a
Power per Channel, Stereo Mode (both channels driven)
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD	185 W	260 W	450 W	800 (650**) W	1050 W
8Ω, EIA 1 kHz, 0.1% tdD	200 W	300 W	500 W	850 W	1100 W
4Ω, FTC 20 Hz–20 kHz, 0.1% tdD	280 W	400 W	650 W	1300 W	1600 W
4Ω, EIA 1 kHz, 0.1% tdD	300 W	500 W (0.5% tdD)	800 W	1400 W	1800 W
2Ω, FTC 20 Hz–20 kHz, 1% tdD	–	–	–	1600 W	2000 W
2Ω, EIA 1 kHz, 1% tdD	430 W	700 W	1200 W	2000 W	2500 W
Power, Bridge-Mono Mode
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD	530 W	800 W	1300 W	2600 W	3200 W
8Ω, EIA 1 kHz, 0.1% tdD	600 W	900 W	1500 W	2800 W	3600 W
4Ω, EIA 1 kHz, 1% tdD	830 W	1400 W	2400 W	4000 W	5000 W
Signal to Noise (20 Hz–20 kHz)	-100 dB
Distortion (SMPTE-IM)	< 0.01%		< 0.02%
Input Sensitivity at 8Ω	1.15V (+3.4dBu)		1.23V (+4.0 dBu)	1.42V (+5.3 dBu)
Voltage Gain	31.6x (30 dB)	40x (32 dB)	50x (34 dB)	64x (36 dB)
Output Circuitry	Class AB		2-tier Class H	3-tier Class H
Current Draw (120 V AC) Typical, 1/8 power pink noise at 4Ω* Severe, 1/3 power pink noise at 4Ω*	4.5 A 6.6 A	6.0 A 9.6 A	6.3 A 15.6 A	10.0 A 20.1 A	13.9 A 26.9 A
AC Mains Plug 100/120V 230V	NEMA 5-15 CEE7/7				NEMA 5-20 CEE7/7
Distortion (typical) 20 Hz–20 kHz, 10 dB below rated power 1 kHz and below, full rated power	< 0.03% tdD, 4Ω and 8Ω < 0.03% tdD, 4Ω and 8Ω			< 0.02% tdD, 4Ω and 8Ω < 0.02% tdD, 4Ω and 8Ω
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			> 250 at 8Ω
Input Impedance	10 kΩ unbalanced; 20 kΩ balanced
Input Stage Clipping	10 V rms (+22 dBu)			6.4 V rms (+18 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, tdermal, 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
Product Dimensions (H×W×D)	89 (2 RU) × 482 × 404 mm 3.5 (2 RU) × 19 × 15.9 in			132 (3 RU) × 482 × 404 mm 5.25 (3 RU) × 19 × 15.9 in
Carton Dimensions (H×W×D)	610 × 560 × 153 mm 24 × 22 × 6 in			610 × 560 × 229 mm 24 × 22 × 9 in
Net Weight	15.9 kg / 35 lb	18.2 kg / 40 lb	20.2 kg / 44.5 lb	30.8 kg / 68 lb	33.1 kg / 75 lb
Shipping Weight	18.6 kg / 41 lb	20.9 kg / 46 lb	23 kg / 50.5 lb	34.9 kg / 77 lb	37.6 kg / 87 lb
Power Requirements	100, 120, 230 V AC (factory configured), 50–60 Hz