Features - All Models
• Very lightweight (“02” models, 21 lb/9.5 kg, “04” models 13 lb/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
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/channel at 4 ohm
• 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/channel at 2 ohm, 3600 watts
bridged at 4 ohm
The PLX2 Series is a range of premium quality, highpower amplifiers designed for the most demanding
live performance uses. Built on the third generation
of QSC PowerLight™ technology, PLX2 amplifiers
combine lightweight, superlative audio quality and
proven QSC reliability. With power output up to 3600
watts, PLX2 amplifiers are capable of providing ample
clean, undistorted output to the most power hungry
speaker systems.
PowerLight switchmode technology replaces a large,
heavy AC transformer (typically 20 lb/9 kg) with
a highly efficient and lighter weight active design.
Conventional AC transformers provide 100 or 120
energy pulses per second, the PowerLight supply
delivers 190,000 to 230,000 pulses per second.
More pulses make it easier to provide on-demand
power for the amplifier’s output section. The power
supply doesn’t “sag” so bass notes stay full and
powerful while the high end remains crisp and clean.
PLX2 Series amplifiers have the refined but rugged
good looks of professional power tools and high
power machinery. A solid, cast-aluminum front panel
adds style to any rack while acting as an integral
I-beam, rigidly tying the chassis together for years of
on-the-road reliability.
The PLX2 Series now includes two approaches to
meet a wider range of needs and budgets. The fully
featured “02” models (1802, 2502, 3102, 3602)
drive 2 ohm loads and add subwoofer processing
and convenient rear-panel signal processing control
switches to the original, still unmatched PLX platform.
In addition, the compact “04” models (1104, 1804)
have been added to bring the same performance and
technology, plus even greater value, to applications
that don’t require bridged or 2 ohm operation.
1 kHz, 0.1%THD, both channels driven
*
1 kHz, 1%THD, both channels driven
PLX2 Series
Professional Power Amplifiers
PLX2 Power Amplifiers
Stereo (watts per channel) Bridged (watts)
Model 8Ω 4Ω 2Ω* 4Ω*
PLX1104 325 550 − −
PLX1804 600 900 − −
PLX1802 330 575 900 1800
PLX2502 450 750 1250 2500
PLX3102 600 1000 1550 3100
PLX3602 775 1250 1800 3600
PLX1104 | PLX1804 | PLX1802 | PLX2502 | PLX3102 | PLX3602
PLX1104 PLX1804 PLX1802 PLX2502 PLX3102 PLX3602
Stereo Mode (both channels driven)*
8Ω FTC 20 Hz – 20 kHz 0.05% THD 310 W 550 W 320 W 425 W 550 W 725 W
8Ω EIA 1 kHz 0.1% THD 325 W 600 W 330 W 450 W 600 W 775 W
4Ω FTC 20 Hz – 20 kHz 0.05% THD 500 W 800 W 525 W 675 W 900 W 1100 W
4Ω EIA 1 kHz 0.1% THD 550 W 900 W 575 W 750 W 1000 W 1250 W
2Ω EIA 1 kHz 1% THD − − 900 W 1250 W 1550 W 1800 W
Bridge-Mono Mode*
8Ω 20 Hz - 20 kHz 0.1% THD − − 1100 W 1400 W 1900 W 2500 W
8Ω EIA 1 kHz 0.1% THD − − 1200 W 1500 W 2100 W 2600 W
4Ω 1 kHz 1% THD − − 1800 W 2500 W 3100 W 3600 W
Signal to Noise (20 Hz - 20 kHz) -106 dB -106 dB -107 dB -106 dB -107 dB -107 dB
Input Sensitivity at 8Ω 1.18 Vrms 1.20 Vrms 1.28 Vrms 1.15 Vrms 1.23 Vrms 1.25 Vrms
Voltage Gain at 8Ω 32.5 dB 35 dB 32 dB 34 dB 35 dB 36 dB
Output Circuitry Class AB 2-tier Class H Class AB 2-tier Class H 2-tier Class H 2-tier Class H
Power Requirements (1/8 power, pink noise at 4Ω) 8 A /120V 9.4 A /120V 8.7 A /120V 7.5 A /120V 9.5 A /120V 11.5 A /120V
04 MODELS 02 MODELS
Distortion (SMPTE-IM) < 0.02% < 0.02%
Distortion (typical)
1/8 rated power, 20 Hz – 20 kHz < 0.02% < 0.02%
Full rated power, 20 Hz – 20 kHz < 0.02% < 0.02%
Damping Factor > 200 > 500
Input Impedance 10k ohms unbalanced / 20k ohms balanced 10k ohms unbalanced / 20k ohms balanced
Input Clipping 5.5 Vrms (+15 dBu) 11 Vrms (+21 dBu)
Cooling Variable-speed fan, rear-to-front air flow Variable-speed fan, rear-to-front air flow
Input Connectors, each channel 3-pin XLR and 1/4" TRS balanced, parallel 3-pin XLR and 1/4" TRS balanced, parallel
Output Connectors, each channel Neutrik NL4 Speakon® / Neutrik NL4 Speakon® and touch-proof binding posts /
Both channels available on Ch 1 NL4 connector Both channels available on Ch 1 NL4 connector
Amplifier Protection Full short circuit, open circuit, thermal, Full short circuit, open circuit, thermal,
infrasonic, ultrasonic, and RF protection. infrasonic, ultrasonic, and RF protection.
Stable into reactive or mismatched loads Stable into reactive or mismatched loads
Load Protection On/off muting, On/off muting,
DC-fault power supply shutdown DC-fault power supply shutdown
Dimensions
Height 3.5" (8.9 cm) - 2 RU 3.5" (8.9 cm) - 2 RU
Width 19" (48.3 cm) 19" (48.3 cm)
Depth - Rack mounting surface to rear 8.95" (22.7 cm) 12.8" (32.6 cm)
- Overall 11" (27.9 cm) 14.875" (37.9 cm)
Weight - Shipping / Net 18 lb (8.2 kg) / 13 lb (5.9 kg) 26 lb (11.8 kg) / 21 lb (9.5 kg)
Agency Approvals CE, FCC, cUL, UL CE, FCC, cUL, UL
PLX2 Series Specifications
qscaudio.com
Specifications subject to change without notice.
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174
PLX2 Spec Sheet 06/05/08
02 MODELS
04 MODELS
* CE versions may have up to 12% (0.5 dBw) less power due to special construction to meet EN-61000 AC harmonic limits
QSC, the QSC logo and PowerLight are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
Speakon is a trademark of Neutrik. All other trademarks are the property of their respective owners. Patents may apply or be pending.