รายละเอียดย่อ :
เครื่องขยายเสียง 2 channels, 500 watts/ch at 8Ω, 800 watts/ch at 4Ω, 1200 watts/ch at 2Ω
รายละเอียดทั้งหมด :
  
QSC RMX2450a เครื่องขยายเสียง 2 channels, 500 watts/ch at 8Ω, 800  
watts/ch at 4Ω, 1200 watts/ch at 2Ω 
The RMX2450A is a 750W-Channel @ 4 Ohms stereo power amplifier. 
The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. Three 2-rackspace models range in power from 430 to 1200 watts per channel at 2 ohms. Two 3-rackspace models provide 2000 to 2500 watts per channel at 2 ohms. All five models feature a compact chassis less than 16" deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4" balanced inputs, Speakon® and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance. 
Features: 
- High-current toroidal transformers for greater 2 Ohm power 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
 
- Front mounted gain controls for easy access
 
- Signal and Clip LED indicators to monitor performance
 
- Independent DC and thermal overload protection on each channelautomatically protectsamplifier and speakers
 
 
Specifications: 
- Stereo Mode (both channels driven)
  8 Ohms / FTC 20 Hz – 20 kHz /0.1% THD: 450W  8 Ohms / EIA 1 kHz / 0.1% THD: 500W  4 Ohms / FTC 20Hz – 20 kHz / 0.1% THD: 650W  4 Ohms / EIA 1 kHz / 0.1% THD: 750W  2 Ohms / EIA 1 kHz / 1% THD: 1200W 
- Bridge-Mono Mode
  8 Ohms / FTC 20 Hz – 20 kHz / 0.1% THD: 1300W  8Ohms / EIA 1 kHz / 0.1% THD: 1500W  4 Ohms / EIA 1 kHz / 1% THD: 2400W 
 
  
|  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 | 
 
Weight  Net  Shipping | 
  35 lb (15.9 kg)  41 lb (18.6 kg) | 
  40 lb (18.2 kg)  46 lb (20.9 kg) | 
  44.5 lb (20.2 kg)  50.5 lb (23 kg) | 
  68 lb (30.8 kg)  77 lb (34.9 kg) | 
  75 lb (33.1 kg)  87 lb (37.2 kg) | 
 
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 | 
 
| Dimensions | 
3.5” (8.9 cm) tall; 2 rack spaces | 
5.25” (13.3 cm) tall; 3 rack spaces | 
 
| Power Requirements | 
100, 120, 230 V AC (factory configured), 50–60 Hz | 
 
 
 
 
  
All specifications are subject to change without notice. 
 
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