QSC PL-20-HV Brochure
PRELIMINARY
FEATURES
PowerLight
HV
2.0
1000 watts per channel at 4 ohms
725 watts per channel at 8 ohms
(guaranteed minimum spec)
Advanced thermal management
system
Clip limiter (user defeatable)
reduces distortion, protects
speakers
PowerWave™ Switching
Technology—for improved audio
performance
Detented gain controls with 2 dB
steps for easy resetting
Comprehensive LED status arrays
High efficiency, 2-step output
circuit for improved thermal
performance and lower AC current
consumption
Two variable speed fans, for quiet
operation
DC, subsonic audio, and thermal
overload protection
he PowerLight™ 2.0HV is an advanced professional audio amplifier featuring uncompromised
audio performance. A new high frequency power
supply, utilizing QSC’s
ing Technology
rugged audio amplification circuits of traditional
QSC amplifiers to produce an amplifier with incredible reliability, thermal capacity, and audio
performance. A special “High Voltage” output cir cuit provides maximum power at 16, 8, and 4 ohm
loads. The PowerLight 2.0
LOAD FTC CONTINUOUS AVERAGE EIA WATTS
Stereo (W/Ch)
16Ω 400 watts 425watts
Bridged-Mono
16Ω 1300 watts 1450watts
PowerWave™ Switch-
, has been combined with the
HV
is rated at
20Hz-20kHz, 0.1% THD 1kHz, 1% THD
8Ω 650 watts 725watts
4Ω 1000watts
8Ω 2000watts
425 watts/channel into 16 ohms, 725 watts/channel into 8 ohms, and 1000 watts/channel into
4 ohms, making it ideal for powering stage monitors, subwoofers and high power, passive fullrange speaker systems. In bi-amplified stage
monitor applications, up to 1200 watts/channel
at 4 ohms can be delivered to the woofers.
Outstanding audio performance and reliability,
high efficiency design, networkability, and light
weight make this amplifier ideal for all critical
sound system applications.
Patented Output Averaging™ shortcircuit protection
Neutrik ”Combo“ (XLR & 1/4”) and
barrier balanced input connectors
Stereo/bridging/parallel input
switch
”Touch proof“ binding post output
connectors
Remote AC power control
Data port for MultiSignal
Processing
3 year warranty PLUS optional
3 year extended service contract
™
1675 MacArthur Boulevard
Costa Mesa, California 92626-1468 USA
Phone: 714/754-6175 Fax: 714/754-6174
OUTPUT POWER (per channel)
16 ohms, 20 Hz to 20 kHz,0.1% THD, 400 watts
16 ohms, 1kHz, 1% THD, 425 watts
8 ohms, 20 Hz to 20 kHz, 0.1% THD, 650 watts
8 ohms, 1 kHz, 1% THD, 725 watts
4 ohms, 1 kHz, 1% THD, 1000 watts
OUTPUT POWER (bridged mono)
16 ohms, 20 Hz to 20 kHz,0.1% THD, 1300 watts
8 ohms, 1 kHz, 1% THD, 2000 watts
DISTORTION (SMPTE-IM): less than 0.05%
DISTORTION (typical): less than 0.01% THD
4Ω to 8Ω:
20Hz-20kHz, 10 dB below rated power
1.0 kHz and below, full rated power
FREQUENCY RESPONSE:
20 Hz to 20 kHz, ±0.15 dB
5 Hz to 60 kHz, +0/-3 dB
Specifications
HV
DAMPING FACTOR:
Greater than 350
DYNAMIC HEADROOM: 3.0 dB at 4 ohms
NOISE: 108 dB below rated output (20 Hz to 20 kHz)
SENSITIVITY: 1.16 Vrms for rated power (8 ohms)
VOLTAGE GAIN: 63 (36 dB)
INPUT IMPEDANCE: 10K unbalanced, 20K balanced
CONTROLS:
Front: AC Switch, Ch 1 and Ch 2 Gain Knobs, Ch1 and Ch2 Clip Limiter Switches
Back: Parallel/Stereo/Bridge Switch, Remote Power Supply Enable Terminal
INDICATORS:
PROT: Red LED CLIP: Red LED, 1 per channel
STANDBY: Yellow LED LEVEL -10: Yellow LED, 1 per channel
PWR-ON: Green LED LEVEL -20: Yellow LED, 1 per channel
CONNECTORS: (each channel)
Input: Barrier strip and Neutrik “Combo” XLR and 1/4” input.
Speakers: “Touch proof” binding posts.
Data port: HD 15 female
COOLING: Dual variable speed fans, rear-to-front air flow.
AMPLIFIER PROTECTION:
PowerLight 2.0
Full short circuit†, open circuit, thermal muting, ultrasonic, and RF protection.
Stable into reactive or mismatched loads.
LOAD PROTECTION:
On/off muting. DC-fault protection.
OUTPUT CIRCUIT TYPE:
Complementary linear outputs. 2-step high efficiency circuit.
POWER REQUIREMENTS: 120, 230 Vac, 50-60 Hz
120V CURRENT CONSUMPTION:
LOAD NORMAL PROGRAM MAX PROGRAM MAX SINEWAVE
16Ω 4.5A 8.5A 17A
8Ω 6.7A 12.2A 22.9A
4Ω 9.6A 18.3A 36.0A
Multiply currents by 0.5 for 230V units. *Pink noise
1/8 POWER* 1/3 POWER* 1% CLIPPING
DIMENSIONS:
19.0" (48.3 cm) rack mounting
3.5" (13.3 cm) tall (2 spaces)
17.9" (45.5 cm) deep (rear support ears)
WEIGHT: 18 Ibs (8.2 kg) net, 24 Ibs (10.6 kg) shipping
SIG-PRESENT: Green LED, 1 per channel
ARCHITECT’S AND ENGINEER’S SPECIFICATIONS
The amplifier shall contain all solid-state circuitry, using complementary
silicon output devices. The amplifier shall exceed the efficiency of an
ordinary class-B linear output circuit. The amplifier shall operate from 5060 Hz AC power. The amplifier shall operate from a 15A 120V AC outlet,
drawing less than 1150 VA when driven with random program material at
1/8 rated power into four ohm loads. The amplifier shall be supplied with
a single molded AC cord having a standard NEMA 15 AC plug for 120 V
units; 220-240 V units shall be equipped with a 320-C19 16A IEC mains
connector and a removable power cord. The amplifier shall comply with
FCC part 15 Class B requirements.
The amplifier shall employ forced-air cooling with two variable speed fans
for minimum acoustic noise. Air flow shall be from rear to front to avoid
temperature rise inside the rack. Rack mounting shall be possible without
clearance between amplifiers for ventilation. The amplifier shall be capable of continuous operation at 1/3 power into eight-ohm loads, in ambient temperatures up to 104 F (40 C).
The amplifier shall contain two independent amplifier channels on separate printed circuit boards, each with separate and synchronized switching power supplies. All amplifier protection systems shall be synchronized
and self-resetting upon removal of fault. Each channel shall have protective circuitry against short circuit or mismatched loads. Each channel shall
independantly monitor heat sink temperature and shall trigger fan speed
boost, and if necessary, signal muting to prevent excessive temperature
rise. Both channels shall have synchronized on-off muting, acting for three
seconds after turn-on, and within 1/4 second after turn-off or loss of AC
power. Each channel shall have DC fault protection for the load, consisting of a synchronized shutdown of each amplifier channel’s power supply.
The front panel shall contain the AC power switch; a green LED power-on
indicator; a yellow LED standby indicator and a red protect mode indicator. Each channel shall have the following controls and displays: A front
panel detented gain control, with 11 gain settings: 36 dB, 34 dB, 32 dB, 30
dB, 28 dB, 26 dB, 24 dB, 22 dB, 18 dB, 14dB, -∞; a recessed front panel
clip limiter defeat switch; a green signal present LED triggering at -30 dB;
two yellow LED output indicators, triggering at -20 dB and -10 dB; a red
LED showing true amplifier clipping.
The output connectors for each channel shall include a “touch proof” binding post, accepting banana plug or up to 7 AWG (4mm) wire. Connector
terminals are arranged to allow bridge mono connection.
The rear panel input shall provide barrier strip and Neutrik “Combo” connectors for each channel. The XLR input shall be wired with pin 2 high,
the 1/4" RTS input shall be wired with tip positive, ring negative, and
sleeve grounded. Inputs shall be electronically balanced, with a minimum
impedance of 10 kilohms per side, and a common mode rejection of at
least 50 dB from 20 Hz to 20 kHz.
A High Density 15 Pin Data Port connector shall carry both audio and amplifier operational status signals to and from a QSC MultiSignal Processor.
Switches shall be provided for stereo-bridging and parallel inputs. A two
position barrier strip, on the rear panel, shall be used for remote Power
Supply Enable. A contact closure shall place the both amplifier channels
in standby mode, when the front panel power switch is in the on position.
The front panel power switch shall function as a master switch that removes all AC power.
Each channel shall be capable of meeting the following performance criteria with both channels driven: Sine-wave output power of 400 watts
into sixteen ohms, and 650 watts into eight ohms, 20 Hz to 20 kHz, with
less than 0.1% THD. Frequency response at 3 dB below rated power shall
be 20 Hz to 20 kHz within 0.15 dB. The voltage gain shall be 63, equivalent
to 36 dB, and the input sensitivity shall be 1.16 Vrms. The signal to noise
ratio over the range of 20 Hz to 20 kHz shall exceed 108 dB relative to full
output. IHF damping factor shall exceed 350.
The amplifier chassis shall occupy two rack spaces, with provision for
securing the rear corners. Depth from mounting surface to tips of rear
supports shall be 17.9" (45.5 cm).
Weight shall not exceed 18 lbs. (8.2 kg.). The amplifier shall be the QSC
Audio Products PowerLight
™
2.0HV.
†Output Averaging™ short circuit protection (US Patent 4,321,554)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
1675 MacArthur Boulevard
Costa Mesa, California 92626-1468 USA
Phone: 714/754-6175 Fax: 714/754-6174
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