Specifications

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SC28 System Controller
The SC28 is a dedicated speaker processor with
factory-optimized tunings for QSC loudspeaker
systems. User-adjustable 6 band parametric
equalizer, high and low shelving filters and signal
delay optimize the system for acoustic, environmental
or aesthetic considerations.
For uncompromised audio quality, the SC28 uses
48 kHz 24-bit A/D and D/A conversion with 32-bit
floating point DSP. Advanced signal processing algorithms
incorporate IIR (Infinite Impulse Response) as well as FIR
(Finite Impulse Response) filters. QSC system engineers
have employed the power of the SC28 System
Controller’s FIR filters to implement Intrinsic Correction™
of the loudspeaker. Intrinsic Correction is designed to
produce flat acoustical amplitude, frequency and phase
response by compensating for physical phenomena such
as the effects of waveguide acoustical impedance and
loudspeaker cone resonance. The result is excellent
power response and extremely natural, uncolored sound
across the loudspeaker’s frequency band and coverage
area. An array of loudspeakers with Intrinsic Correction
will be very responsive to user-applied equalization.
The SC28 is designed for simple, straightforward
operation. Audio inputs and outputs are via balanced,
line-level, analog XLR connectors. Four outputs for
each of the two inputs are provided for use with 2 or
3-way systems plus subwoofers. Tunings are selected
by scrolling through a list of QSC loudspeakers and
selecting the model on the LCD panel. A similar
process is used to select the QSC amplifiers being
used and to configure amplifier input sensitivity for
proper dynamic protection and gain structure. Settings
for future QSC products can be loaded into the SC28
via a rear-mounted USB port.
Once the processor settings have been matched to
the system, the user or installer can take advantage
of the integral equalization and delay functions.
Password protection is included to prevent
unauthorized tampering.
Intrinsic Correction™
• FIRfiltersoptimizeresponseinbothfrequencyandtime
domains by pre-correcting for physical phenomena such
as waveguide acoustical impedance and loudspeaker
cone resonances.
QSC Loudspeaker Selection
• SelecttheQSCloudspeakerandconfiguration(2-way,
3-way, 3-way + sub). The SC28 instantly reconfigures
itself for optimal audio reproduction.
QSC Amplifier Selection
• SelecttheQSCamplifierbeingusedtocalibratethe
drive signal to the amplifier for proper balance and
loudspeaker protection.
User-Adjustable Input EQ
• Six(6)parametricfilterswithadjustablefrequency,gain
and bandwidth.
• Highandlowshelffilterswithadjustablefrequency,gain
and slope.
User-Adjustable Delays
• Subdelayadjustablefrom0to50ms.
• Arraydelayadjustablefrom0to20ms.
Subwoofer Management
• Selectablestereoormono-summedsubwoofer.
• Adjustablesubwoofergain.
• Systemisoptimizedforoperationwithor
without subwoofer.
Loudspeaker Protection
• Optimizedthermalandexcursionprotectionfor
each transducer.
• User-bypassableforoutputclip-limitingonly.
Channel Linking
• Selectlinkedorindependentcontrolofstereo
channel settings.
Features
• Two(2)XLRline-levelinputs.
• Eight(8)XLRline-leveloutputs.
• Frontpanelmetersforallinputsandoutputs.
• UniversalACpowerinput.
• Rear-panelUSBportforquickandeasyloadingof
new loudspeaker tunings.
RoHS
DIGITAL | NETWORK