QSC PLX1104 Power Amplifier

The compact PLX1104 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.

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" PLX1104 is perfect for ultra-portable rigs, as well as reference-quality playback.


SPECIFICATIONS
Stereo Mode
8 ohms (each channel)
• FTC 20 Hz - 20 kHz 0.05% THD: 310 W
• EIA 1 kHz 0.1% THD: 325 W

Stereo Mode
4 ohms (each channel)
• FTC 20 Hz - 20 kHz 0.05% THD: 500 W
• EIA 1 kHz 0.1% THD: 550 W

• Signal to Noise (20 Hz - 20 kHz): -106 dB
• 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
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 8 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, 8 Hz
• DC fault: Power supply shutdown
• Ultrasonic: -3 dB, 120 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%
PHYSICAL
• 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 13 lbs. (5.9 kg) net
18 lbs. (8.2 kg) shipping
• Agency Approvals CCC, CB, CE, FCC, KETI, cUL, UL

* CE versions may have up to 12% (0.5 dBw) less power due to special construction to meet EN-61000 AC harmonic limits

CURRENT CONSUMPTION PLX1104
• 1/8 Power (pink noise)
8 ohms 5A/120V
4 ohms 8A / 120V
• 1/3 Power (pink noise)
8 ohms 8A/120V
4 ohms 12.4A / 120V
• Full Power
8 ohms 12.6A/120V
4 ohms 21A / 120V
• Notes Long term, breaker-limited to 15A/120V