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QSC RMX 2450a |
Two-Channel Power Amplifier |
• 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
Power per Channel, Stereo Mode (both channels driven)
RMX 850a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 185 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 200 W
• 4 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 280 W
• 4 ohms, EIA 1 kHz, 0.1% tdD: 300 W
RMX 1450a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 260 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 300 W
• 4 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 400 W
• 4 ohms, EIA 1 kHz, 0.1% tdD: 500 W (0.5% tdD)
RMX 2450a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 450 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 500 W
• 4 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 650 W
• 4 ohms, EIA 1 kHz, 0.1% tdD: 800 W
RMX 4050a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 800 (650**) W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 850 W
• 4 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 1300 W
• 4 ohms, EIA 1 kHz, 0.1% tdD: 1400 W
RMX 5050a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 1050 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 1100 W
• 4 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 1600 W
• 4 ohms, EIA 1 kHz, 0.1% tdD: 1800 W
2 ohms, FTC 20 Hz–20 kHz, 1% tdD
• RMX 4050a: 1600 W
• RMX 5050a: 2000 W
2 ohms, EIA 1 kHz, 1% tdD
• RMX 850a: 430 W
• RMX 1450a: 700 W
• RMX 2450a: 1200 W
• RMX 4050a: 2000 W
• RMX 5050a: 2500 W
Power, Bridge-Mono Mode
RMX 850a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 530 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 600 W
• 4 ohms, EIA 1 kHz, 1% tdD: 830 W
RMX 1450a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 800 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 900 W
• 4 ohms, EIA 1 kHz, 1% tdD: 1400 W
RMX 2450a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 1300 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 1500 W
• 4 ohms, EIA 1 kHz, 1% tdD: 2400 W
RMX 4050a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 2600 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 2800 W
• 4 ohms, EIA 1 kHz, 1% tdD: 4000 W
RMX 5050a
• 8 ohms, FTC 20 Hz–20 kHz, 0.1% tdD: 3200 W
• 8 ohms, EIA 1 kHz, 0.1% tdD: 3600 W
• 4 ohms, EIA 1 kHz, 1% tdD: 5000 W
RMX 850a, RMX 1450a, RMX 2450a, RMX 4050a, RMX 5050a
Signal to Noise (20 Hz–20 kHz) - 100 dB
RMX 850a, RMX 1450a
Distortion (SMPTE-IM): < 0.01%
RMX 2450a, RMX 4050a, RMX 5050a
Distortion (SMPTE-IM): < 0.02%
RMX 850a, RMX 1450a
Input Sensitivity at 8 ohms: 1.15V (+3.4dBu)
RMX 2450a
Input Sensitivity at 8 ohms: 1.15V (+3.4dBu)
RMX 2450a
Input Sensitivity at 8 ohms: 1.23V (+4.0 dBu)
RMX 4050a, RMX 5050a
Input Sensitivity at 8 ohms: 1.42V (+5.3 dBu)
RMX 850a
Voltage Gain: 31.6x (30 dB)
RMX 1450a
Voltage Gain: 40x (32 dB)
RMX 2450a
Voltage Gain: 50x (34 dB)
RMX 4050a, RMX 5050a
Voltage Gain: 64x (36 dB)
RMX 850a, RMX 1450a
Output Circuitry: Class AB
RMX 2450a
Output Circuitry: 2-tier Class H
RMX 4050a, RMX 5050a
Output Circuitry: 3-tier Class H
RMX 850a
Current Draw (120 V AC)
Typical, 1/8 power pink noise at 4 ohms*: 4.5 A
Severe, 1/3 power pink noise at 4 ohms*: 6.6 A
RMX 1450a
Current Draw (120 V AC)
Typical, 1/8 power pink noise at 4 ohms*: 6.0 A
Severe, 1/3 power pink noise at 4 ohms*: 9.6 A
RMX 2450a
Current Draw (120 V AC)
Typical, 1/8 power pink noise at 4 ohms*: 6.3 A
Severe, 1/3 power pink noise at 4 ohms*: 15.6 A
RMX 4050a
Current Draw (120 V AC)
Typical, 1/8 power pink noise at 4 ohms*: 10.0 A
Severe, 1/3 power pink noise at 4 ohms*: 20.1 A
RMX 5050a
Current Draw (120 V AC)
Typical, 1/8 power pink noise at 4 ohms*: 13.9 A
Severe, 1/3 power pink noise at 4 ohms*: 26.9 A
RMX 850a, RMX 1450a, RMX 2450a, RMX 4050a
AC Mains Plug 100/120V 230V: NEMA 5-15 CEE7/7
RMX 5050a
AC Mains Plug 100/120V 230V: NEMA 5-20 CEE7/7
RMX 850a, RMX 1450a, RMX 2450a
Distortion (typical)
20 Hz–20 kHz, 10 dB below rated power: < 0.03% tdD, 4 ohms and 8 ohm
1 kHz and below, full rated power: < 0.03% tdD, 4 ohms and 8 ohms
RMX 4050a, RMX 5050a
Distortion (typical)
20 Hz–20 kHz, 10 dB below rated power: < 0.02% tdD, 4 ohms and 8 ohms
1 kHz and below, full rated power: < 0.02% tdD, 4 ohms and 8 ohms
QSC RMX 2450a Two-Channel Power Amplifier
Frequency Response: 20 Hz–20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed, 8 ohms)
RMX 850a, RMX 1450a, RMX 2450a
Damping Factor (1 kHz and below): > 300 at 8 ohms
RMX 4050a, RMX 5050a
Damping Factor (1 kHz and below): > > 250 at 8 ohms
Input Impedance: 10 k ohms unbalanced; 20 k ohms balanced
RMX 850a, RMX 1450a, RMX 2450a
Input Stage Clipping: 10 V rms (+22 dBu)
RMX 4050a, RMX 5050a
Input Stage Clipping: 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)
RMX 850a, RMX 1450a, RMX 2450a
• 89 (2 RU) × 482 × 404 mm
• 3.5 (2 RU) × 19 × 15.9 in
RMX 4050a, RMX 5050a
• 132 (3 RU) × 482 × 404 mm
• 5.25 (3 RU) × 19 × 15.9 in
Carton Dimensions (H×W×D)
RMX 850a, RMX 1450a, RMX 2450a
• 610 × 560 × 153 mm
• 24 × 22 × 6 in
RMX 4050a, RMX 5050a
• 610 × 560 × 229 mm
• 24 × 22 × 9 in
RMX 850a
Net Weight: 15.9 kg / 35 lb
Shipping Weight: 18.6 kg / 41 lb
RMX 1450a
Net Weight: 18.2 kg / 40 lb
Shipping Weight: 20.9 kg / 46 lb
RMX 2450a
Net Weight: 20.2 kg / 44.5 lb
Shipping Weight: 23 kg / 50.5 lb
RMX 4050a
Net Weight: 30.8 kg / 68 lb
Shipping Weight: 34.9 kg / 77 lb
RMX 5050a
Net Weight: 33.1 kg / 75 lb
Shipping Weight: 37.6 kg / 87 lb
RMX 850a, RMX 1450a, RMX 2450a, RMX 4050a, RMX 5050a
• Power Requirements: 100, 120, 230 V AC (factory configured), 50–60 Hz