買器材 » 喇叭 » PA擴大機 » QSC RMX2450a Low-Z 擴大機
詳細價格請私訊 DigiLog 粉專或是 Line ID: @nmm9009t
The 750 watts per channel at 4Ω QSC RMX2450a Low-Z Power Amplifier is a 2RU rack mountable amplifier designed for live sound reinforcement applications. The amplifier features two 2-tier Class H output channels that can operate in either stereo or mono bridge mode. The unit operates on a standard 15 amp plug and utilizes high-current toroidal transformers for less noise and better performance when pushing a 2 ohm load. To reduce distortion, the amplifier utilizes independent user-defeatable clip limiters and includes LED indicator lights to show the presence of the signal and when the signal is clipping.
The chassis of the amplifier is designed with front to rear cooling vents and includes selectable low-frequency filters at 30 Hz and 50 Hz to protect speakers from bottoming out and improve headroom when driving mid and high frequencies. The front panel of the unit features two gain control knobs for easy access and each channel is protected by a dedicated DC and thermal overload protection circuit. For inputs, the back of the unit accepts both balanced 1/4" and XLR inputs. For outputs, the unit features both Neutrik Speakon and touch-proof binding post connections.
| Power Rating | Stereo mode (both channels driven) 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 450 W 8 Ω EIA 1,000 Hz at 0.1% THD: 500 W 4 Ω FTC 20 to 20,000 Hz at 0.1% THD: 650 W 4 Ω EIA 1,000 Hz at 0.1% THD: 750 W 2 Ω EIA 1,000 Hz at 0.1% THD: 1200 W Bridge-mono mode 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 1300 W Bridge-mono mode 8 Ω EIA 1,000 Hz at 0.1% THD: 1500 W Bridge-mono mode 4 Ω EIA 1,000 Hz at 0.1% THD: 2400 W |
| Signal-to-Noise Ratio | > -100 dB |
| Distortion | SMPTE-IM: < 0.02% For 8 and 4 Ω load THD for 20 to 20,000 Hz at 10 dB below rated power: less than 0.03% THD for 1,000 Hz at full rated power: less than 0.03% |
| Input Sensitivity | 1.23 V (+4.0 dBU) at 8 Ω |
| Voltage Gain | 50x (34 dB) |
| Circuit Type | 2-tier Class H |
| Power Consumption | 6.3 A 1/8 power pink noise at 4Ω 15.6 A |
| Damping Factor | > 300 at 8Ω |
| Input Impedance | 10 kΩ balanced 20 kΩ unbalanced |
| Frequency Response | 20 to 20,000 Hz +0/-1 dB -3 dB points 5 Hz to 50,000 Hz (LF filter bypassed/8 Ω) |
| Input Connections | Active balanced 3-pin Euro-style detachable terminal block 2 x 3-pin XLR 2 x 1/4" TRS |
| Cooling | Continuously variable speed fan, back-to-front airflow |
| Output Connectors | Touch-proof binding posts 2 x Neutrik Speakon |
| Controls Front Panel | AC switch Channel 1 gain knob Channel 2 gain knob |
| Controls Rear Panel | 10-position DIP switch |
| Indicators | Power-on: green LED Signal: yellow LED (1 per channel) Clip: red LED (1 per channel) Protect: red LED (1 per channel) |
| Power Requirements | 100, 120, 230 VAC at 50 to 60 Hz (factory configured) |
| Protection | Amplifier: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads Load: Turn-on/off muting/AC coupling (850, 1450)/ Triac Crowbar (1050HD, 2450, 4050HD, 5050) on each channel |
| Rack Spaces | 2 |
| Plug Type | 100/120V: NEMA 5-15 230V: CEE7/7 |
| Dimensions (H x W x D) | 3.5 x 19.0 x 15.9" (89.0 x 482 x 404 mm) |
| Weight | 44.5 lb (20.2 kg) |
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