QSC PLX1104

The PLX2 series is a range of premium quality, high-power amplifiers designed for the most demanding live performance uses. Built on the third generation of QSC PowerLight® technology, PLX2 amplifiers combine light weight, superlative audio quality and proven QSC reliability. With power ratings up to 3,600 watts, PLX2 amplifiers are capable of providing plenty of clean, undistorted output to the most power hungry speaker systems.

The compact PLX1104 is for applications that don't require briged or 2 ohm operation. Designed to power one or two speakers from each amplifier channel (4 ohm minimum loading), these models offer a simplified feature set while retaining genuine, uncompromised PLX performance and technology. Weighing just 13 pounds these "plug-and-play" amplifiers are perfect for ultra-portable rigs, as well as reference-quality playback.

PLX2 series amplifiers have the refined, rugged good looks usually associated with high performance racing cars, competition bikes, professional power tools, and high power machinery. A solid, cast-aluminum front panel adds professional style to any rack while also acting as an integral I-beam, rigidly tying the chassis together for years of on-the-road reliability.

Additional mechanical touches such as the side stiffening rails, rear rack ears and cable tie anchor points attest to QSC's years of experience and attention to detail. QSC has even designed the integrated front handles so the amplifier slides into a rack without scraping the installers fingers on the rack sides. The exterior appearance of PLX2 amplifiers conveys what's inside - simply and truly, 13 pounds of the most advanced professional power amp on the planet.

PowerLight switchmode technology replaces a large, heavy AC transformer (typically 20 lbs. / 9 kg) with a highly efficient and lighter-weight active design. Conventional AC transformers provide 60 energy pulses per second. The PowerLight supply delivers 100,000 pulses per second. More pulses make it easier to provide on-demand power for the amplifier's output section. The power supply doesn't "sag" so bass notes stay full and powerful while the high end remains crisp and clean.

PLX2 audio power circuitry achieves performance normally associated with studio reference amplifiers. In order to reduce crossover distortion, precision bias tracking makes minute adjustments as amplifier temperature changes. The benefit is cleaner high-frequency and more consistent sound no matter how hard the amplifier is driven. The higher power models use QSC-exclusive class H output circuitry, a form of audio "turbocharging" that increases maximum power without affecting the basic audio quality.

Power Output

• 8 ohms, stereo: 325W
• 4 ohms, stereo: 550W

Features

• Very light weight (13 lbs/5.9 kg)
• Cooling design exhausts hot air out the front,keeping the rack cool. Flow-through heat sinks require no filters that couldbecome clogged
• Front panel LED power, clip, -10 dB, and signalpresent indicators for system monitoring and troubleshooting. 02 models alsofeature bridge and parallel mode LED indicators
• Speakon® NL-4 output connectors provide apositive-locking speaker connection. Ch 1 output uses all 4 wires forsingle-cable connection to bi-amplified speakers
• 21-position front-panel gain controls for precise,repeatable amplifier adjustment
• Balanced XLR inputs with parallel TRS connectorsaccommodate all common input connectors and support loop-through operation
• Patented PowerLight power supply technology withother patents pending
• Value combined with uncompromised PLX technology,quality and performance for applications that don't require bridged or 2 ohmstereo operation
• Two models with power ratings up to 900 watts perchannel @ 4 ohms
• Clip limiting protects speakers; thermal limiting maintains operation evenduring abnormal overloads

Specifications

• Signal to Noise (20Hz-20kHz): -106dB
• Input Sensitivity @ 8 ohms: 1.18 Vrms
• Gain @ 8 ohms: 32.5 dB
• Output Circuitry: AB
• Distortion (SMPTE-IM): less than 0.02%
• Typical Distortion: less than 0.02%
• Frequency Response: 20Hz-20kHz, -0.5dB
• Damping Factor: Greater than 200
• Input Impedance: 20k ohms balanced, 10k ohmsunbalanced
• Input Clipping: 5.5 Vrms (+15 dBu)
• Cooling: Variable-speed fan, rear-to-front air flow
• Input Connectors, each channel: 3-pin XLR and 1/4"TRS balanced
• Output Connectors, each channel: Neutrik NL4 Speakon(both channels available on Ch 1 output)
• Rear Panel Switches: Circuit Breaker
• Front Panel Controls: Detented Input Attenuator: 0 toinfinity dB, Power On/Off
• Front Panel Indicators: Clip: Red LED; -10: Green LED; Signal (-35dB):Green LED; Power: Blue LED

Protection

• Amplifier Protection: Full short circuit, opencircuit, thermal, infrasonic, ultrasonic, and RF protection; Stable intoreactive or mismatched loads
• Load Protection: On/off muting, DC-fault power supplyshutdown
• Infrasonic: -3 dB, 8 Hz
• DC fault: Power supply shutdown
• Ultrasonic: -3 dB, 120 kHz
• Short Circuit: Muting
• Thermal: Limiting at 85 degrees C, Muting at 90degrees C
• Over Current: Active clip limiting; AC circuitbreaker
• High Line: Standard +15%, survive +25%
• Low Line: -40%

Physical

• Dimensions (H x W x D): 3.5" x 19" x 8.95", 2RU
• Overall Depth: 11"
• Weight: 13 lbs (net); 18 lbs (shipping)
• Agency Approvals: CCC, CB, CE FCC, KETI, cUL, UL