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User Manual for QSC RMX850a Power Amplifier Click to enlarge the picture
Contents of the user manual for the QSC RMX850a Power Amplifier
- Product category: Power Amplifiers QSC
- Brand: QSC
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for QSC Power Amplifiers
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User manual for the QSC RMX850a Power Amplifier contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any QSC product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official QSC user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a QSC product will considerably shorten its lifespan!
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Product description The 300 watts per channel 4Ω QSC RMX850a Power Amplifier is a 2RU rack mountable amplifier designed for live sound reinforcement applications. The amplifier features two Class AB 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. UPC: 684284062765 In the Box QSC RMX850a Power Amplifier (300 W per Channel) Power Cord Limited 3-Year Warranty Extendable by Additional 3-Year Service Contract Table of Contents
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Technical parametersQSC RMX850A Specs | Power Rating | Stereo mode (both channels driven)
8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 185 W
8 Ω EIA 1,000 Hz at 0.1% THD: 200 W
4 Ω FTC 20 to 20,000 Hz at 0.1% THD: 280 W
4 Ω EIA 1,000 Hz at 0.1% THD: 300 W
2 Ω EIA 1,000 Hz at 0.1% THD: 430 W
Bridge-mono mode 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 530 W
Bridge-mono mode 8 Ω EIA 1,000 Hz at 0.1% THD: 600 W
Bridge-mono mode 4 Ω EIA 1,000 Hz at 0.1% THD: 830 W | | Signal-to-Noise Ratio | > -100 dB | | Distortion | SMPTE-IM: < 0.01%
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 | 1.15 V (+3.4 dBU) at 8 Ω | | Voltage Gain | 31.6x (30 dB) | | Circuit Type | Class AB | | Power Consumption | 4.5 A
1/8 power pink noise at 4Ω 6.6 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 | 35.0 lb (15.9 kg) | | | | Package Weight | 36.4 lb | | Box Dimensions (LxWxH) | 24.0 x 22.0 x 6.0" |
Rating80% users recommend this product to others. And what about you?
This product has already been rated by 47 owners. Add your rating and experience with the product.
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