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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