QSC Audio PLX 1804 - Manual (Page 12)

12
Specifications PLX 1104, PLX 1804
PLX 1104 PLX 1804
OUTPUT POWER (Watts)
(1)
20 - 20k Hz, 0.05% THD, 8 ohms/Ch. 310 550
1k Hz, 0.1% THD (EIA), 8 ohms/Ch. 325 600
20 - 20k Hz, 0.05% THD, 4 ohms/Ch. 500 800
1k Hz, 0.1% THD (EIA), 4 ohms/Ch. 550 900
DISTORTION, SMPTE-IM 0.02% 0.02%
FREQUENCY RESPONSE 20 - 20k Hz, ±0.5 dB, all models
SIGNAL to NOISE, unweighted, 20 - 20k Hz -108 dB -106 dB
VOLTAGE GAIN 32.5 dB 34.9 dB
INPUT SENSITIVITY, Vrms
for rated power into 8 ohms 1.18 (+3.7 dBu) 1.20 (+3.8 dBu)
OUTPUT CIRCUIT TYPE AB AB/H
INPUT IMPEDANCE 10k ohms unbalanced, 20k ohms balanced
DYNAMIC HEADROOM 2 dB at 4 ohms
DAMPING FACTOR (8 ohms) >200
AMPLIFIER PROTECTION Short circuit, open circuit, thermal, ultrasonic and RF protection. Stable into reactive or mismatched loads
COOLING Continuously variable speed fan; back-to-front air flow through heat sink array
CONTROLS Front: AC POWER switch, Gain controls (each channel) 21 detents
Back: AC circuit breaker
LED INDICATORS POWER (blue), SIGNAL (green x 2), -10 dB (green x 2), CLIP (red x 2)
CONNECTORS Input: 1/4-inch TRS and female XLR; 20k ohm balanced, 10k ohm unbalanced
Output: Speakon connectors: Ch 1, 4-wires (Ch 1 + Ch 2); Ch 2, 2-wires (Ch 2 only)
LOAD PROTECTION Turn-on/turn-off muting, DC fault blocking, Clip limiting, Infrasonic filter (-3 dB at 5 Hz)
POWER REQUIREMENTS Refer to rear panel serial number label. Configured at factory for 100, 120 or 220-240 VAC, 50- 60 Hz.
DIMENSIONS 19.0" (48.3 cm) W, 3.5" (8.9 cm) H, 10.1" (25.7 cm) D (from front mounting rails, including rear support
ears)
WEIGHT (1) 13 pounds (5.9 kg) net; 18 pounds (8.2 kg) shipping
(1) NOTE: Due to special construction to meet EN-6100, CE models may have 5-12% (0.5 dBw) less power and 1.2 lb (0.6 kg) more weight.
U.S. patent no. 5767744 and patents pending
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE