QSC PL4.0
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QSC PL4.0 Product Details
QSC PL 4.0
With an unequaled reputation for sound quality and reliability, the PowerLight Series is a range of
advanced-technology professional audio amplifiers designed for touring professionals. PowerLights
feature QSC’s exclusive PowerWave technology for extraordinary audio performance, reliability and
reduced weight. Four models offer a range of power from 725 to 3,500 watts per channel, allowing you
to choose the right power for your special application.
With PowerWave technology, PowerLight amplifiers take your sound to a whole new level. Not only does
it give you tighter bass and clean transparent highs, PowerWave also cuts waste heat and boosts
reliability. PowerWave is a revolutionary switching power supply technology that provides ample
current to the audio power circuitry by charging the supply rails 230,000 times a second though an
ultra-low impedance circuit. So unlike amplifiers that use conventional supplies, the audio signal is
never starved prematurely and remains crisp and clean.
PowerLight Series amplifiers also boast a set of useful features. Individually selectable clip
limiters lower distortion and protect speakers, and a standby mode allows remote AC control.
FEATURES
PowerWave switching technology—for improved audio performance
High efficiency, Class H linear output circuit lowers AC current consumption
and cooling requirements by 40% or more (on selected models)
DataPort for remote computer control
User defeatable clip limiter reduces distortion, protects speakers
Advanced thermal management system for superior cooling
Detented gain controls with 2 dB steps for easy resetting
Comprehensive LED status arrays
Variable speed fan for quiet operation
Remote AC power control
DC, subsonic audio, and thermal overload protection
Neutrik “Combo” (XLR & 1/4") and barrier balanced input connectors
3 year warranty plus optional 3 year extended service contract
PL4.0 Specifications:
Stereo Mode
8 ohms FTC 0.1% THD 20 Hz-20 kHz: 900W, 8 ohms EIA 1.0% THD 1 kHz: 1000W, 4 ohms FTC 0.1% THD
20 Hz-20 kHz: 1400W, 4 ohms EIA 1.0% THD 1 kHz: 1600W, 2 ohms EIA 1.0% THD 1 kHz: 2000W,
Bridge Mono Mode
8 ohms FTC 0.1% THD 20 Hz-20 kHz: 2800W, 4 ohms EIA 1.0% THD 1 kHz: 4000W, Distortion (SMPTE-IM):
less than 0.05%
THD (Typical): 4 ohms to 8 ohms: 20 Hz-20 kHz,10 dB below rated power. 1.0 kHz and below, full rated
power - 0.01%
Damping Factor (1 kHz and below): greater than 500, Signal to Noise (20 Hz-20 kHz): 105 dB, Input
Sensitivity @ 8 ohms (in Vrms): 1.06, Voltage Gain: 80x (38 dB), Output Circuitry: H (3-Step), Cooling
(rear to front airflow): Single Fan, Height (1 RU=1.75" (4.45cm): 3 RU, Weight (net): 30 lbs, (13.6 kg)
120v Current Consumption(1/8 Power Pink Noise @ 4 ohms) Multiply current by 0.5 for 230V units: 15.2 A
Connectors (each channel): Input: Neutrik "Combo" XLR + 1/4" TRS input and Barrier strip (eurostyle
detachable headers on PL 6.0II only) Output: "Touch-proof" binding posts.
Frequency Response: 20 Hz-20 kHz, ± 0.15 dB/ 2 Hz-50 kHz, +0, -3 dB (6.0II only) 5 Hz-60 kHz, +0, -3 dB
(2.0HV, 3.4, and 4.0 only) 8 Hz-100 kHz, +0, -3 dB (all other models)Input Impedance: 10 K ohms
unbalanced, 20 K ohms balanced
Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic and RF protection. Stable
into reactive or mismatched loads.
Controls: Front: AC switch, Ch 1 & Ch 2 gain knobs, Ch. 1 and Ch.2 clip limiter switches Rear:
Parallel/Stereo/Bridge Switch, Remote AC Control terminal strip.
Load Protection: On/off muting, DC-fault power supply shutdown
Indicators: PROT: Red LED STANDBY: Yellow LED PWR-ON: Green LED.
(each channel) CLIP: Red LED LEVEL-10 dB: Yellow LED LEVEL-20: Yellow LED SIGNAL: Green LED
Power Requirements: 120, 230 VAC, 50-60 Hz
Dimensions: 19.0" (48.3 cm) rack mounting (all models) 17.9" (45.5 cm) deep behind front mounting
rails (all models) Overall Depth on PL 6.0II (19.5")