QSC 8 ohm capable) User Manual page 11

Specifications 4-Channel Low-Impedance Models
OUTPUT POWER (Watts)
20 - 20k Hz, 0.03% THD, 8 Ohms/Ch.
20 - 20k Hz, 0.05% THD, 4 Ohms/Ch.
1k Hz, 1.0% THD (EIA), 8 Ohms/Ch.
1k Hz, 1.0% THD (EIA), 4 Ohms/Ch.
1k Hz, 1.0% THD (EIA), 2 Ohms/Ch.
Bridge Mono, 20 - 20k Hz, 0.1% THD, 16 Ohms
Bridge Mono, 20 - 20k Hz, 0.1% THD, 8 Ohms
Bridge Mono, 1k Hz, 1.0% THD, 8 Ohms
Bridge Mono, 1k Hz, 1.0% THD, 4 Ohms
DISTORTION, SMPTE-IM
FREQUENCY RESPONSE
SIGNAL to NOISE, unweighted, 20 - 20k Hz
VOLTAGE GAIN
INPUT SENSITIVITY, Vrms
for rated power into 8 Ohms
for rated power into 4 Ohms
OUTPUT CIRCUIT TYPE
INPUT IMPEDANCE
DYNAMIC HEADROOM
DAMPING FACTOR
AMPLIFIER PROTECTION
COOLING
CONTROLS
LED INDICATORS
CONNECTORS
LOAD PROTECTION
POWER REQUIREMENTS
DIMENSIONS
WEIGHT
CX254 CX404
170 250
250
450
450
340 500
500
900
900
<0.01% <0.01%
20 - 20k Hz, ±0.2dB at 10dB below rated output power, all models (-3dB points: 8 Hz and 100 kHz)
-106 dB -106 dB
29.0x (29dB) 36.5x (31dB)
1.28 (+4.4dBu) 1.22 (+3.9dBu)
1.08 (+2.9dBu) EIA: 1.16 (+3.5dBu)
AB AB
6k ohms unbalanced, 12k ohms balanced, all models
2 dB at 4 Ohms, all models
>500 at 8 Ohms, all models
Short circuit, open circuit, thermal, ultrasonic and RF protection. Stable into reactive or mismatched loads
Continuously variable speed fan; back-to-front air flow through heat sink tunnel
Front: AC POWER switch, gain controls (1 control per channel, 21 detents)
Back: 10-position DIP switch (1 per channel pair) with Clip Limiter (1 per Ch.), LF Filter on/off (1 per Ch.)
LF filter select: 33 or 50 Hz (1 per Ch.), Stereo/Parallel/Bridge mode selection switches (1 set per Ch. pair)
POWER (green, 1 each), SIGNAL, -10dB, -20dB (green, 1 each per Ch.), CLIP (red, 1 each per channel),
BRDG and PAR (yellow, 1 each per Ch. pair)
Input: 3-pin terminal block ("euro" or "Phoenix" type)
Output: barrier strip connectors with protective shroud, one barrier strip per Ch. pair
Other: two QSC DataPort connectors (supports full "V1"feature set), one DataPort per Ch. pair
Turn-on/turnoff muting, AC coupling (DC fault blocking), Clip limiting.
Refer to rear panel serial number label. Configured at factory for 100, 120 or 220-240 VAC, 50- 60 Hz.
19.0" (48.3 cm) W, 3.5" (8.9 cm) H, 14" (35.6 cm) D (from front mounting rails, including rear support ears)
21 pounds (9.5 kg) net; 27 pounds (12.3 kg) shipping
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
EN
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