QSC PLX1804
DISCONTINUED
This product has been discontinued by the manufacturer. Please contact us to find a replacement.
QSC PLX1804 (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. 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.
| SPECIFICATIONS | PLX1804 |
| Stereo Mode | |
| 8 ohms (each channel) * | |
| FTC 20 Hz - 20 kHz 0.05% THD | |
| EIA 1 kHz 0.1% THD | |
| 550 W | |
| 600 W | |
| Stereo Mode | |
| 4 ohms (each channel) * | |
| FTC 20 Hz - 20 kHz 0.05% THD | |
| EIA 1 kHz 0.1% THD | |
| 800 W | |
| 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-Tier Class H |
| Distortion (SMPTE-IM) | Less than 0.02% |
| Typical Distortion | |
| 1/8 rated power, 20 Hz-20 kHz | |
| Full rated power, 20 Hz-20 kHz | |
| Less than 0.02% | |
| 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 Gain 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% |
| PHYSICAL | |
| Dimensions | |
| Height | |
| Width | |
| Depth, Rack mounting surface to rear panel | |
| Overall Depth | |
| 3.5" (8.9 cm) 2 rack spaces | |
| 19" (48.3 cm) | |
| 8.95" (22.7 cm) | |
| 11" (27.9 cm) | |
| Weight | 13 lbs. (5.9 kg) net |
| 18 lbs. (8.2 kg) shipping | |
| Agency Approvals | CE, FCC, cUL, UL |
PLX2 Series Features
All models
Very light weight ("02" models, 21 lbs/9.5 kg, "04" models 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 could become clogged.
Front panel LED power, clip, -10 dB, and signal present indicators for system
monitoring and troubleshooting. 02 models also feature bridge and parallel mode
LED indicators.
Speakon® NL-4 output connectors provide a positive-locking speaker connection.
Ch 1 output uses all 4 wires for single-cable connection to bi-amplified
speakers.
21-position front-panel gain controls for precise, repeatable amplifier
adjustment.
Balanced XLR inputs with parallel TRS connectors accommodate all common input
connectors and support loop-through operation.
Patented PowerLight power supply technology with other patents pending.
04 models
Value combined with uncompromised PLX technology, quality and performance for
applications that don't require bridged or 2 ohm stereo operation.
Two models with power ratings up to 900 watts per channel @ 4 ohms.
Clip limiting protects speakers; thermal limiting maintains operation even
during abnormal overloads.
02 models
Speakon NL4 and binding post outputs.
100 Hz high pass and low pass filters for bi-amping subwoofer and satellite
systems without the need for an external crossover.
Switchable/defeatable 33 Hz infrasonic filters protect woofers from
over-excursion damage.
Switchable/defeatable clip limiters.
Four models with power ratings up to 1800 watts per channel @ 2 ohms, 3600 watts
bridged @ 4 ohms.
