QSC รุ่น RMX1850HD

 FEATURES

• Compact size - up to 2400 watts in 2 rack spaces
• Professional quality performance - incorporates road-proven QSC designs
• High-current toroidal transformers for greater two-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
• Balanced 1/4" (6.3mm) TRS, XLR and barrier strip inputs
• Binding post and Neutrik Speakon outputs
• Front mounted gain controls for easy access
• Signal and Clip LED indicators to monitor performance
• Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers                                                                                                                                                                                                 

  SPECIFICATIONS	RMX 850	RMX 1450	RMX 1850HD	RMX 2450
  	STEREO MODE (Both Channels Driven)
  8 ohms   FTC 20 Hz - 20 kHz, 0.1% THD    EIA 1 kHz, 0.1% THD	185 W 200 W	260 W 280 W	350 W 360 W	450 W 500 W
  4 ohms   FTC 20 Hz - 20 kHz, 0.1% THD    EIA 1 kHz, 0.1% THD	280 W 300 W	400 W 450 W	550 W 600 W	650 W 750 W
  2 ohms     EIA 1 kHz, 1% THD	430 W	700 W	900 W	1200 W
  	BRIDGE MONO MODE
  8 ohms    FTC 20 Hz - 20 kHz, 0.1% THD    EIA 1 kHz, 0.1% THD	530 W 600 W	800 W 900 W	1100 W 1200 W	1300 W 1500 W
  4 ohms     EIA 1 kHz, 1% THD	830 W	1400 W	1800 W	2400 W
  Signal to Noise, 20 Hz-20 kHz	100 dB	100 dB	100 dB	100 dB
  Distortion (SMPTE-IM)	Less than 0.01%	Less than 0.01%	Less than 0.02%	Less than 0.02%
  Input Sensitivity @ 8 ohms	1.15V (+3.4 dBu)	1.15V (+3.4 dBu)	1.16V (+3.5 dBu)	1.23V (+4.0 dBu)
  Voltage Gain	31.6x (30 dB)	40x (32 dB)	46x (33 dB)	50x (34 dB)
  Output Circuitry	AB	AB	Class H	Class H
  Power Requirements 1/8 power pink noise at 4 ohms *	5A	6A	6A	7A
  	ALL MODELS
  Distortion (Typical)   20 Hz - 20 kHz: 10 dB below rated power   1.0 kHz and below: full rated power	Less than 0.03% THD, 4 and 8 ohms Less than 0.03% THD, 4 and 8 ohms
  Frequency Response	20 Hz-20 kHz, ±1 dB -3 dB points: 5 Hz - 50 kHz
  Damping Factor, 1 kHz and below	Greater than 300 at 8 ohms
  Input Impedance	10k ohms unbalanced, 20k ohms balanced
  Input Clipping	10 Vrms (+22 dB)
  Cooling	Continuously variable-speed fan, rear-to-front air flow
  Connectors, each channel	Input: Active balanced; barrier strip, XLR and 1/4" (6.3mm) TRS tip and XLR (pin 2 positive) Output: touch-proof binding posts and Neutrik® Speakon®
  Controls	Front: AC switch, Ch. 1 and Ch. 2 gain knobs Rear: 10-position DIP switch
  Indicators	Power-On: Green LED Signal: Yellow LED (1 per channel) Clip: Red LED (1 per channel)
  Amplifier Protection	Stable into reactive or mismatched loads
  Load Protection	On/off muting, AC coupling (850, 1450), triac crowbar (1850HD, 2450, on each channel)
  Power Requirements	100, 120, 230 VAC, 50-60 Hz
  Dimensions	19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 RU),  15.9" (40 cm) deep (rack mounting to rear support ears)
  Weight	35 lbs (15.9 kg) net	40 lbs (18.2 kg) net	44.5 lbs (20.2 kg) net	44.5 lbs (20.2 kg) net