The PLX2 series is a range of premium quality,
high-power amplifiers designed for the most demanding live performance
uses. Built on the third generation of QSC PowerLight® technology,
PLX2 amplifiers combine light weight, superlative audio quality and
proven QSC reliability. With power ratings up to 3,600 watts, PLX2
amplifiers are capable of providing plenty of clean, undistorted output
to the most power hungry speaker systems.
Two ways to get PLX2 performance
The "02" models (PLX1802, PLX2502, PLX3102 and
PLX3602) are the right choice for users who need to drive up to four
loudspeakers from each amplifier channel (2 ohm loading), or when
extremely high power bridge mono operation is required. These models
feature built-in subwoofer processing, filter switches, and front
panel indications of bridge mono status.
The compact "04" models (PLX1104, PLX1804) bring the same performance
and technology, 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), these models
offer a simplified feature set while retaining genuine, uncompromised
PLX performance and technology. Weighing just 13 pounds (5.9 kg) these
"plug-and-play" amplifiers are perfect for ultra-portable rigs, as
well as reference-quality playback.
Mechanical
PLX2 series amplifiers have the refined, rugged
good looks usually associated with high performance racing cars, competition
bikes, professional power tools, and high power machinery. A solid,
cast-aluminum front panel adds professional style to any rack while
also acting as an integral I-beam, rigidly tying the chassis together
for years of on-the-road reliability.
Additional mechanical touches such as the side stiffening rails, rear
rack ears and cable tie anchor points attest to QSC's years of experience
and attention to detail. QSC has even designed the integrated front
handles so the amplifier slides into a rack without scraping the installers
fingers on the rack sides. The exterior appearance of PLX2 amplifiers
conveys what's inside - simply and truly, 13 to 21 pounds of the most
advanced professional power amp on the planet.
PowerLight Technology
PowerLight switchmode technology replaces a large,
heavy AC transformer (typically 20 lbs. / 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.
Audio Quality
PLX2 audio power circuitry achieves performance
normally associated with studio reference amplifiers. In order to
reduce crossover distortion, precision bias tracking makes minute
adjustments as amplifier temperature changes. The benefit is cleaner
high-frequency and more consistent sound no matter how hard the amplifier
is driven. The higher power models use QSC-exclusive class H output
circuitry, a form of audio "turbocharging" that increases maximum
power without affecting the basic audio quality.
PLX2 Series Power Amplifiers
Model
Stereo watts per channel
Bridged watts
8 ohms*
4 ohms*
2 ohms**
8 ohms*
4 ohms**
PLX1104
325
550
-
-
-
PLX1804
600
900
-
-
-
PLX1802
330
575
900
1200
1800
PLX2502
450
750
1250
1500
2500
PLX3102
600
1000
1550
2100
3100
PLX3602
775
1250
1800
2600
3600
* 1 kHz, 0.1% THD, both channels driven
** 1 kHz, 1% THD, both channels driven
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.
