QSC PLX 1804, The compact PLX1804 brings the same performance and technology as the rest of the PLX2 Series, plus even greater value, to applications that don't require bridged or 2 ohm operation. This two channel 1800w amplifier is designed to power one or two speakers from each amplifier channel (4 ohm minimum loading), this model offer a simplified feature set while retaining genuine, uncompromised PLX performance and technology. Weighing just 13 pounds (5.9 kg), the "plug-and-play" PLX1804 is perfect for ultra-portable rigs, as well as reference-quality playback.

Specification

• Stereo Mode 8 ohms (each channel):

FTC 20 Hz - 20 kHz 0.05% THD: 550 W
EIA 1 kHz 0.1% THD: 600 W

• Stereo Mode 4 ohms (each channel):

FTC 20 Hz - 20 kHz 0.05% THD: 800 W
EIA 1 kHz 0.1% THD: 900 W

• Signal to Noise (20 Hz - 20 kHz): -106 dB
• Input Sensitivity @ 8 ohms: 1.20 Vrms
• Gain @ 8 ohms: 35 dB
• Output Circuitry: 2-Step Class H
• Distortion (SMPTE-IM): Less than 0.02%
• Typical Distortion:

1/8 rated power, 20 Hz-20 kHz: Less than 0.02%
Full rated power, 20 Hz-20 kHz: Less than 0.02%

• Frequency Response: 20 Hz-20 kHz, -0.5 dB
• Damping Factor: Greater than 200
• Input Impedance: 20k ohms balanced, 10k ohms unbalanced
• 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 to ∞ dB Power On/Off
• Front Panel Indicators: Clip: Red LED, -10: Green LED, Signal (-35 dB): Green LED, Power: Blue LED

 Protection

• Amplifier Protection: Full short circuit, open circuit, thermal, infrasonic, ultrasonic, and RF protection. Stable into reactive or mismatched loads
• Load Protection: On/off muting, DC-fault power supply shutdown
• Infrasonic: -3 dB, 6 Hz
• DC fault: Power supply shutdown
• Ultrasonic: -3 dB, 80 kHz
• Short Circuit: Muting
• Thermal: Limiting at 85° C, Muting at 90° C
• Over Current: Active clip limiting, AC circuit breaker
• High Line: Standard +15%, survive +25%
• Low Line: -40%

Dimensions

• Height: 3.5" (8.9 cm) 2 rack spaces
• Width: 19" (48.3 cm)
• Depth, Rack mounting surface to rear panel: 8.95" (22.7 cm)
• Overall Depth: 11" (27.9 cm)
• Weight: 5.9 kg net
• Agency Approvals: CCC, CB, CE, FCC, KETI, cUL, UL

Current Consumption

• 1/8 Power (pink noise): 8 ohms: 5.7A/120V, 4 ohms: 9.4A / 120V
• 1/3 Power (pink noise): 8 ohms: 10.4A/120V, 4 ohms: 16.5A / 120V
• Full Power: 8 ohms: 20A/120V, 4 ohms: 32A / 120V
• Notes: Long term, breaker-limited to 15A/120V

 
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