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QSC PL340 Power Amp

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The PowerLight 3 Series is designed for the most demanding live audio users, whether in touring rigs or fixed installations. The most requested featu...Click To Read More About This Product

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Designed for the most demanding live sound applications.

The PowerLight 3 Series is designed for the most demanding live audio users, whether in touring rigs or fixed installations. The most requested features of the PowerLight 2 series have been upgraded to deliver "the ultimate analog amplifier", while the QSC Dataport ensures full compatibility with advanced digital processing and Three models range in power from 1250 watts to 4000 watts per channel at two ohms, all in two-rack space chassis that are only 15.6" (40 cm) deep and 22 lbs (10 kg).

In addition to higher power, the PowerLight 3 Series offers higher input voltage, selectable sensitivity, and easily adjusted rear panel switches with color coded LED indicators. For those users who simply want a high performance amplifier to go with their existing processor or console, the PowerLight 3 Series is an ideal choice, offering high power, excellent value, and zero signal latency. When complete integration of amplifier control, monitoring and DSP is desired, the PowerLight 3 Series is fully compatible with the BASIS networked audio platform, with its comprehensive drag and drop DSP functionality. Simpler DSP requirements can be met with the DSP-4 processing module.

The PL340 offers the same feature set, matched to upgraded versions of QSC's most advanced linear amplifier platform. Recent advances in power supply capacitors further improve power and low impedance performance, while continuing to offer the best available audio performance. As a result, designers have the choice of running a single type of amplifier throughout their rig, or matching amplifier performance to specific transducer types.

In keeping with normal QSC design standards, back-to-front airflow provides up to twice as much long-term average power as most competitors, without dumping hot air into the rack. All PowerLight 3 models are built in the same chassis size, with common back panel layouts to facilitate easy racking and hookup.

PowerLight switchmode power supply for highest efficiency and improved audio performance
Flow-thru air path and solid aluminum heat sinks for maximum cooling
DataPort supports remote computer control and/or external DSP-4 modules
Detented gain controls with 1 dB steps for precise calibration
Removable knobs with lock-out security plate to prevent unauthorized tampering
User defeatable clip limiters and selectable low-frequency filter per channel (3 Hz, 30 Hz, or 50 Hz)
Three selectable input gains (26 dB, 32 dB, or 1.2 V)
Front and rear panel LEDs indicate status of switch settings at a glance
Parallel Dataport, XLR/M and XLR/F connectors for simple loop-through connectivity
Neutrik Speakonand "Touch Proof" binding post outputs
Neutrik Powerconpower cable remains secure on the road
3 year warranty, plus optional 3 year extended service contract
Linear Class H output circuit doubles standard Class B efficiency to reduce AC current consumption and cooling requirements

Get QSC reliability today!

STEREO MODE, Both Channels Driven 
8 ohms EIA 1 kHz 1% THD: 800 W
4 ohms EIA 1 kHz 1% THD: 1250 W
2 ohms EIA 1 kHz 1% THD: 2000 W*

8 ohms EIA 1 kHz 1% THD: 2600 W
4 ohms EIA 1 kHz 1% THD: 4000 W*

Typical Distortion (20 Hz -3 kHz, 3dB below clip, or 20 Hz - 5 kHz, 10dB below clip, or 20 Hz - 20 kHz, 20dB below clip):
8 ohms: 0.002-0.01%
4 ohms: 0.002-0.01%
2 ohms: 0.02%

Maximum Distortion (20 Hz - 20 kHz, 1 dB below rated power):
4 to 8 ohms: 0.05%

Frequency Response (8 ohms): 20 Hz - 20 kHz, +/-0.2 dB
Noise (20 Hz - 20 kHz, 32 dB Gain): -105 dB
Dynamic Headroom (4 ohms): 2 dB
Damping Factor (8 ohms): 500
Output Circuitry: Class H (2-tier)

Input Sensitivity:
26 dB Setting: 3.92V
32 dB Setting: 1.96V

Input Gain (1.2V setting): 36.4 dB
Maximum Input Level:
1.2V setting: 11V (+23 dB)
32 dB setting: 14.6V (+25.5 dB)
26 db setting: 25V (+30 dB)

AC Power Requirements **:
120V 50/60 Hz: 12A
230V 50 Hz: 7A
120V 50/60 Hz: NEMA-15
230V 50 Hz: CEE 7/7 16A

Chassis Power Connector
All Voltages: 20A PowerCon

Input Impedance > 10k ohms balanced, or unbalanced

Cooling Variable-speed fan, rear-to-front air flow

Connectors (each channel):
Input: XLR Male, XLR Female and 3-pin detachable terminal blocks (1 each per channel)
Output: Neutrik Speakon(ch 1 wired to both channels) and 5-way binding posts
DataPort: HD-15, input signal in parallel with XLR input connectors

Front Controls: AC Power Switch, Gain Controls, 21 detents, 1 dB steps (each channel)

Front indicators (LED color)
Power (Blue)
Bridged (Yellow)
Parallel (Orange)
Clip/Prot (Red x 2)
Level -10 (Orange x 2)
Level -20 (Green x 2)
Signal -35 (Green x 2)

Rear Controls (with LED indicators)
Input Mode: Bridge (Yellow), Stereo (Green), or Parallel (Orange) Gain / Sensitivity: 26dB (Orange), 32dB (Green), or 1.2V (Yellow) High Pass (each channel): 3 Hz (Off), 30 Hz (Yellow), or 50 Hz (Orange) Clip Limiter (each channel): Off, On (Yellow)

Amplifier and Load Protection
Short circuit, open circuit, thermal, RF protection. On/off muting, DC fault shutdown, active inrush limiting

Height: 3.5" (8.9 cm) 2RU
Width: 19" (48.3 cm)
Depth: 15.63" (39.7 cm) from front mounting rails
Weight Net: 22 lbs (10 kg)

*Burst mode testing required due to AC service current limitations
** Representative of current draw with typical music program material with occasional clipping

See All QSC Live Power Amplifiers
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