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DIGITAL SIGNAL PROCESSORS
DOCUMENTS
SC28 Specifications (PDF 188K)
Especificaciones de SC28 (PDF 247K)
User Manual (PDF 840K)
SC28 Array Compensation EQ (PDF 395K)
Wiring Diagram for ILA (PDF 171K)
Wiring Diagram for WideLine-8 (PDF 96K)
Wiring Diagram for WideLine-10 (PDF 175K)
Using SC28 with RMX Amplifiers (PDF 43K)
Intrinsic Correction White Paper (PDF 1.5MB)
TUTORIAL
View the SC28 Tutorial (Flash Required)
SOFTWARE UPDATER
SC28 Updater v3.30 (ZIP 25MB) NEW!
Released: Nov, 15, 2010
Install and run the SC28 Updater before connecting your SC28 to the computer. The software wizard will guide you through the update process.
Supported Loudspeakers:
ILA WL2082-i
ILA Subwoofers WL115-sw & WL118-sw
WideLine-8 WL3082
WideLine-8 Subwoofer WL212-sw
WideLine-10 WL2102
WideLine Subwoofer WL218-sw
HI-RES IMAGES
Front Panel (2812x408 259K)
Rear Panel (2600x456 358K)
3/4 View (2856x764 401K)
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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
Front Panel Control:
- Quickly set up your loudspeaker system to perform and sound as designed by QSC engineers
QSC Loudspeaker Selection:
- Select the QSC loudspeaker and configuration (2-way, 3-way, etc.) and the SC28 instantly reconfigures itself for optimal audio reproduction
QSC Amplifier Selection:
- Select the QSC amplifier being used to calibrate the processor 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 adjustablefrequency, gain and slope
User-Adjustable Delays:
- Sub delay adjustable from 0 to 50 ms
- Array delay adjustable from 0 to 20 ms
Subwoofer Management:
- Select 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
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Products / Digital Signal Processors
SC28 System Controller
The SC28 is a 2 input, 8 output digital system controller containing
pre-programmed tunings for QSC loudspeaker systems (see list of supported loudspeakers at right). In addition to
the preset tunings, the SC28 also offers user-adjustable equalization
and delay.
SC28 Updater Version 3.30 NEW!
Released: Nov, 15, 2010
Download (ZIP 25MB)
See the release notes for a list of added features.
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. Simple to operate yet
uncompromised in audio quality, the SC28 uses 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's FIR
(finite impulse response) filters to implement "Intrinsic Correction™"
of the loudspeaker. The goal of Intrinsic Correction™ is to provide a
drive signal to the amplifiers and loudspeakers that will result in the
most accurate acoustical magnitude, frequency and phase domain
performance possible. When properly implemented, Intrinsic Correction™can compensate for many causal phenomena such as the effects of
waveguide acoustical impedance and loudspeaker cone resonance.
The result is a loudspeaker system with excellent power response and
extremely natural, uncolored sound across its frequency band and
coverage area. An array of loudspeakers with Intrinsic Correction™ tunings
will also be very responsive to the use of equalization to compensate
for array configuration, acoustical conditions or user preferences.
Selection of tunings is accomplished by simply scrolling through a list of
QSC loudspeakers and selecting the configuration 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 gain
structure. Settings for new QSC products may 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 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.
The SC28 is easy to use and delivers superb audio performance at a
very affordable price.
SC28
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| SPECIFICATIONS |
SC28 System Controller |
Dynamic Range
Unweighted
A weighted
(AES-17, -60 dB Method, all sensitivities)
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> 104dB
> 107dB
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Input Impedance
Unbalanced (nominal)
Balanced (nominal) |
69k ohms
11k ohms |
Common Mode Rejection
20 Hz - 20 kHz (min)
20 Hz - 20 kHz (typ) |
> 75 dB
> 80 dB |
| Input Sensitivities |
Vrms: 1.5V, 3V, 9V, 18V
dBU: 5.7, 11.8, 21.3, 27.3
dBV: 3.5, 9.5, 19.1, 25.1 |
Distortion
+4 dBu
2 dB below clip (max)
(AES-17, 20 Hz - 20 kHz, all sensitivities) |
< 0.006 THD+N
< 0.006 THD+N |
Crosstalk (20 Hz – 20 kHz)
Inter-channel (max) |
> 75 dB |
| Frequency Response |
+/- 0.1dB from target response |
| Audio Converters |
24 bit, 48k Hz |
| Mute |
Infinite Attenuation |
| Throughput Delay |
1.4125 milliseconds (A/D – DSP - D/A) |
Program Inputs
Connector Type
Type
Grounding
Pinout
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2
XLR female, locking
Electronically balanced
All shield terminals connected to chassis
1: (GND) 2: (+), 3: (-) |
Program Outputs
Connector Type
Type
Grounding
Pinout |
8
XLR male
Electronically balanced
All shield terminals connected to chassis
1: (GND) 2: (+), 3: (-) |
| Controls |
Rotary encoder knob with push-to-select function |
Indicators
Power
LCD Data Display
Input/Output Meters |
Blue, front panel
2 lines 16 character, backlit, front panel
Green, Yellow, Red, front panel |
| USB Port |
USB type “B” |
| AC Power Requirements |
100-240 VAC, 50-60 Hz, no user adjustment required |
| AC Power Connection |
IEC-type inlet |
| AC Power Cord |
2 meters long, #18AWG |
| Dimensions |
1.73"H x 18.94"W x 6.67"D
(44 mm x 481 mm x 169 mm)
1 Rack Unit |
| Weight |
4.5 lbs / 2 kg |
Specifications subject to change without notice |
