QSC RMX850 专业功率放大器
技术参数：
QSC RMX系列功率放大器具有专业级性能及更经济的价格。在阻抗为2欧姆时，四款2u高的功放每通道功率从430W到1200W，二款3U高的功放功率从2000W到2500W。所有六个型号的功放机体尺寸紧凑，深度均不足16英寸(40厘米)。RMX功放配有XLR及大三芯平衡输入、接线柱和Neurtrik Spekon扬声器输出、前面板增益控制和见识功放状态用信号和削波指示灯。
特 点
1) 机体尺寸紧凑,在2U空间中输出功率可达到2500W。
2) 专业质量性能-体现了已被证实的QSC的成功设计。
3) 大电流环形变压器使2欧姆负载输出功率更高,噪音更低。
4) 用户可选的削波限制器可将低失真。
5) 接线柱及Neutrik Speakon输出端子。
6) 可选低频滤波器(30Hz或50Hz)能保护扬声器,并提高峰值功率余量。
7) 1/4”(6.3mm)TRS平衡插孔,XLR插头和条型端子输入。
8) 前面板上装有各路增益控制,易于操作。
9) 信号和削波发光二极管指示灯可监视功放的工作状态。
10) 每声道独立的直流电源保护和热过载保护能自动地保护功放和扬声器。
削波限制器
当RMX功放驱动困难时,削波限制器自动地找到过载点的确切位置,并使功放在其"峰值区域"保持工作并在不影响效果的情况下防止音质严重失真。低频滤波器和削波限制器均可在各声道独立调节。
输入滤波器
通过使功放和扬声器频带范围的匹配提高系统的响应能力.防止扬声器低频段音质混浊不清。每个声道单独可调：采用最小型的全频带扬声器是为50Hz;采用次低音扬声器和大型全频带系统是为30Hz；采用录音棚监听时关闭。
功率放大器：机体尺寸紧凑,在2U空间中输出功率可达到2500W。专业质量性能-体现了已被证实的QSC的成功设计。大电流环形变压器使2欧姆负载输出功率更高,噪音更低。用户可选的削波限制器可将低失真。接线柱及Neutrik Speakon输出端子，可选低频滤波器(30Hz或50Hz)能保护扬声器,并提高峰值功率余量1/4"(6.3mm)TRS平衡插孔,XLR插头和条型端子输入，前面板上装有各路增益控制,易于操作，信号和削波发光二极管指示灯可监视功放的工作状态
200/8Ω
300/4Ω
430/2Ω
830/桥接4Ω
Power Amplifier (430 Watts)
Independent, defeatable clip limiters reduce distortion without sacrificing peak performance. 2 rack spaces tall.
The new RMX Series amplifiers give you clean, dynamic power with the legendary QSC sound quality and reliability that pros depend on. The RMX Series deliver unmatched performance at a new breakthrough price.
Muscular Power Plant
The power supply is the heart of an amplifier, converting raw AC power from the wall to clean DC for the audio circuitry. The RMX uses a powerful high-current toroidal transformer and ample filter capacitance to ensure generous energy reserves. This makes a critical difference in sound quality, allowing the amp to effortlessly punch out high-level transients, even when driving abusive 2-Ω speaker loads.
Superior Performance
RMX amplifiers deliver true studio-quality sound. A full, complementary output circuit using the highest-grade linear output devices delivers ultra-low distortion (<0.05% THD) and a ruler-flat frequency response. SMT (Surface Mount Technology) triples small-signal component density, enabling us to pack up to 2400 watts of power in a chassis only 2 rack spaces and less than 16 in. deep. And, unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling and cooling.
Features
The RMX Series is packed full of professional features that increase performance and flexibility:
Independent defeatable clip limiters reduce distortion without sacrificing peak performance.
Selectable low-frequency filters boost system response, protect speakers, and ensure low-end tightness by more precisely matching the amplifier's range to the loudspeakers.
Barrier strip, XLR, and 1/4 in. balanced inputs plus Speakon and binding post outputs provide easy connections.
Low-noise variable speed fans with rear-to-front air flow keep amplifiers and racks cool.
Proven Reliability
With over 30 years of building amplifiers for the largest touring companies and venues around the world, you can count on QSC's reputation for designing the most reliable amps available.
Technical Info
Specifications
Continuous Rating
8 Ω: 200W
4 Ω: 300W
2 Ω: 430W
8 Ω Bridge Mono: 600W
4 Ω Bridge Mono: 830W
Signal to Noise (20 Hz-20 kHz): 100 dB
Distortion (SMPTE-IM): Less than 0.01%
Input Sensitivity @ 8 Ω: 1.15v (+3.4 dBu)
Voltage Gain: 31.6x (30 dB)
Output Circuitry: AB
Current Consumption (1/8 power pink noise at 4 Ω @ 120VAC,
both channels driven; multiply current by .5 for 230V units.): 5A
Weight (Net): 35 lbs. (15.9 kg)
Distortion (typical):
20 Hz-20 kHz: 10 dB below rated power: Less than 0.03% THD 4 and 8 Ω
1.0 kHz and below: full rated power: Less than 0.03% THD 4 and 8 Ω
Frequency Response:
20 Hz-20 kHz, ? 0/-1 dB, -3 dB points: 5 Hz-50 kHz
Damping Factor (1 kHz and below): Greater than 300 at 8 Ω
Input Impedance: 10 K Ω unbalanced, 20 K Ω balanced
Input Clipping: 10 Vrms (+22dBu)
Cooling: Continuously variable speed fan, rear-to-front air flow
Connectors (each channel):
Input: Active balanced; barrier strip, XLR, and 1/4 in. (6.3 mm)
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:
PWR-ON: Green LED SIGNAL: Yellow LED (1 per channel)
CLIP: Red LED (1 per channel)
Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads.
Load Protection: Turn-on/off muting, AC coupling (850, 1450), triac crowbar (2450, on each channel)
Dimensions:
19 in. (48.3 cm) rack mounting, 3.5 in. (8.9 cm) tall (2 rack spaces),
15.9 in. (40 cm) deep (rack mounting to rear support ears)
Power Requirements: 100, 120, 230 VAC, 50-60 Hz
