Flexible System
Architecture
The demands placed on professional sound reinforcement systems require
a range of solutions from small and simple to huge and complex. One
unifying theme is that all are systems. That's why QSC develops
and manufactures all of the most critical links in the sound reinforcement
signal chain: signal processing, amplification and loudspeakers.
SC28
The SC28 is a 2 input, 8 output digital system controller containing
pre-programmed tunings for QSC loudspeaker systems and user-adjustable
equalization and delay.
Audio inputs and outputs are via balanced, line-level, XLR connectors.
Uncompromised audio quality is delivered by 48 kHz, 24-bit A/D and
D/A conversion with 32-bit, floating point DSP for wide dynamic range
and low distortion. Advanced DSP is capable of implementing tunings
that incorporate IIR (Infinite Impulse Response) as well as FIR (Finite
Impulse Response) filters. QSC system engineers have employed the
power of the SC28 FIR filters to implement Intrinsic Correction.
Selection of tunings is accomplished by simply scrolling through and
selecting from a list of QSC loudspeakers and amplifiers on the SC28
LCD panel. Settings for new QSC products may be loaded via a USB port.
Once processor settings have been entered, the user can take advantage
of an integral, 6 band parametric equalizer, high and low shelving
filters and signal delay to optimize for acoustic, environmental or
aesthetic considerations. Password protection is included to prevent
unauthorized tampering.
PowerLight™
3 Series
The PowerLight 3 Series is designed for the most demanding live audio
users, whether in touring rigs or fixed installations.
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The most requested features of the PowerLight
2 Series have been upgraded to deliver "the ultimate analog amplifier",
plus the QSC DataPort ensures full compatibility with advanced digital
processing and QSControl.net™. Three models range in power from
1250 to 4000 watts per channel at two ohms, all in two-rack space
chassis that are only 15.6" (40 cm) deep and weigh between 22 and
24 lb (10-11 kg).
The flagship of the PowerLight 3 Series is the new 8000 watt PL380.
This highly refined, all-switchmode amplifier incorporates nearly
40 years of QSC engineering experience, resetting expectations for
Class D audio quality. The PL380 combines Class D amplification with
the well proven PowerLight power supply, to deliver more than twice
as much audio power as previous 2 rack unit PowerLight amplifiers.
Unprecedented efficiency of 85% keeps AC power needs to a minimum,
while delivering more energy to the speaker.
For lower power applications, the 2500 watt PL325 and 4000 watt PL340
offer the same feature set, matched to 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.
In addition to higher power, the PowerLight 3 Series offers easily
adjusted rear panel function switches with colorcoded LED indicators
for high-pass filters, clip limiting input sensitivity and normal
or bridged output.
For those users who simply want the highest 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 QSControl.net™ networked audio platform, with its comprehensive
drag and drop DSP functionality. Simpler DSP requirements can be met
by simply plugging a DSP-4 processing module into the rear panel of
the amplifier.
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BASIS
BASIS processors include amplifier and loudspeaker management, configurable
DSP and CobraNet™ digital audio transport in a compact 1RU device.
Automatic Power Limiting (Patent No. 6,940,981) is one of the most
powerful of BASIS features. This technology creates a feedback loop
between QSC speakers and amps that assesses the driver's thermal response
to the true power delivered to it and uses this information to dynamically
limit the power reaching the driver. Power limiting has no effect
until the designated thermal limit is exceeded, beyond which power
is reduced to a safe level. This maximizes each loudspeaker's performance
without exceeding its safe operating range. BASIS processors are available
in a number of different configurations with up to 8 analog or AES/EBU
digital inputs and up to 16 analog outputs plus CobraNet input and
output capability.
BASIS processors connect directly to the DataPort on select QSC amplifiers,
providing analog audio as well as network control and monitoring of
amplifier functions.
QSControl.net™
QSControl.net is a networked audio system platform that seamlessly
integrates QSC amplifier and loudspeaker management, configurable
digital signal processing and digital audio transport into a unified
system administered through a user-friendly GUI. QSC BASIS, RAVE (520uz,
522aa and 522ua) and DSP 322ua devices all operate under QSControl.net,
controlled from Venue Manager software. DataPort equipped QSC amplifiers
can also be controlled and their performance monitored. Furthermore,
multiple networked computers can control and monitor all units simultaneously.
QSControl.net is AMX® and Crestron® compatible.
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