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QSControl.net™

BASIS 902zz


THX Approved
BASIS 902zz Front Panel
Front Panel
BASIS 902zz Rear Panel
Rear Panel



The BASIS 902zz is no longer manufactured. Please see BASIS 904zz for an equivalent replacement.

QSControl.net, QSC's next generation network audio system, achieves the seamless integration of the company's control, processing, and monitoring technologies. QSControl.net brings together QSC's digital, power amplification and loudspeaker products into a unified system that enables the user to administrate it all via a fully integrated graphical user interface. The new generation BASIS devices are designed to operate under the company's QSControl.net platform.

BASIS 902zz


The BASIS platform meets the control, monitoring, signal transport and processing needs of amplification and loudspeaker systems over an Ethernet network. The BASIS 902zz units combine three distinct QSC technologies within a single hardware unit. Amplifier and loudspeaker control, monitoring and protection, configurable DSP, and CobraNet™ audio transport are seamlessly integrated into one powerful single RU package.

Through QSControl.net, QSC's BASIS and next-generation RAVE and DSP products can be networked together and controlled from a single software interface. In addition, multiple networked computers can be set up to control and monitor all of the units simultaneously.

Fixed Latency DSP


Users of most other configurable DSP systems are familiar with a variable latency inherent in the processing configuration. Add more processing blocks and you also add delay, whether you want it or not. QSC's DSP engine is unique in having a short and fixed processing latency through the DSP subsystem. QSC's fixed latency DSP is configurable DSP that stays fast and predictable from one configuration to the next.

INPUTS DSP OUTPUTS
CobraNet   DataPort CobraNet
24 of 32 24x24 4(8 channels) 32


FEATURES

  • Amplifier and loudspeaker control, monitoring and protection
  • Configurable DSP functions and signal paths
  • Fixed latency DSP engine
  • Ethernet controllable
  • CobraNet audio transport with new intuitive GUI
  • Two Ethernet ports – CobraNet and control can be run over a single cable
    or be divided between the two ports. The CobraNet port is 100Base-T.
    The control port is 10Base-T.
  • Each unit can store eight design configurations that can be changed on the fly
  • Snapshots can recall config or block and/or parameter settings
  • THX approved
  • DSP functions include, but are not limited to:
  • Matrix mixer – any size, up to 24 x 24
  • Automixers – gain sharing
  • Routers – any size, up to 24 x 24
  • Gain controls – any channel count, up to 24
  • Graphic equalizers
  • Filters – high-pass, low-pass, all-pass, shelf, parametric, parametric shelf, Butterworth high and low-pass, Linkwitz-Riley high and low-pass, Bessel-Thomson high and low-pass
  • Crossovers – Linkwitz-Riley, Butterworth, Bessel-Thomson in-phase, Bessel-Thomson symmetrical, 2-way, 3-way, and 4-way general purpose adjustable
  • Compressors, peak limiters, AGC's, gates, dynamics processor
  • Duckers – up to 8 channels, up to 60 seconds fade in and fade out times, priority mix
  • Pink noise, white noise, sine generators
  • Delays
  • Macros – user-definable custom blocks with password protection





QSCONTROL.NET


DOCUMENTS

BASIS 902zz Specifications (PDF 176K)

BASIS 902zz User Manual (PDF 1.6MB)
WCP User Manual (PDF 349K)

SOFTWARE

Venue Manager
QSCAD

ACCESSORIES

WCP-1 Wall Control Plate with Rotary Potentiometer
WCP-2 Wall Control Plate with Rotary BCD Switch

(see WCP User Manual for more information)
SPECIFICATIONS BASIS 902zz

PERFORMANCE
Dynamic range (AES-17, -60 dB method, all sensitivities)
Unweighted > 112 dB
A weighted > 115 dB
Distortion (20 Hz - 20 kHz, all sensitivities)
+4 dBu (max) < 0.009% THD+N
2 dB below clip (max) < 0.009% THD+N
Crosstalk (20 Hz - 20 kHz)
Inter-channel (max)
 > 75 dB
Inter-channel (typ)
 > 90 dB
Intra-channel (max)
 > 85 dB
Intra-channel (typ)
 > 100 dB
Frequency response
20 Hz - 20 kHz (max)
 +/- 0.5 dB
20 Hz - 20 kHz (typ) +/- 0.2 dB
Audio converters 24 bit, 48 kHz, in and out
Mute Infinite attenuation
Delay Standard CobraNet™ latency Low Latency
Network to BASIS
CobraNet input through full DSP chain to analog output		 6.313 milliseconds 3.646 milliseconds

INPUTS/OUTPUTS
Program outputs 8 output
Connector type
 4 HD-15 DataPort connections
Cable type
 QSC DataPort cable, QSC p-n DPC-x ("x" designates cable length in feet)
Available "stock" lengths
 1, 2, 3, 4, 5, 6, 10, and 20 ft., custom lengths available
Maximum qualified length 328 ft. (100 m) using QSC DP cable only. Non QSC cable limited to 6 ft. (audio only)

MONITOR
Control room foldback monitoring
Connector type
 5-pin "phoenix style" (a.k.a. "euro style") detachable terminal blocks
Pinout
 1:+(input)  2:-(input)   3:CHASSIS GND   4:-(output)   5:+(output)
Tap points 8 internal input, 8 internal output, 8 amplifier (pre-, post-, amplifier) software selectable
Monitor input
Monitor signal (unit off) Unity gain connection, relay bypass
Maximum level
 +21 dBu
Impedance (nominal)
 10k ohms
CMRR, 20 Hz - 20 kHz
 > 54 dB
Monitor output
Monitor
 Sum of monitor input and signal from internal monitor tap point(s)
Freq. resp. (20 Hz - 20 kHz)
 +/- 0.5 dB
Distortion (20 Hz - 20 kHz)
 < 0.05% @ +4 dBu
Noise floor
 > 90 dB
Output impedance (nom)
 100 ohms
Output load (min)
 600 ohms
Monitor level
Control range (nom) 0 dB to -95.5 dB in 0.5 dB steps

CONTROL INPUTS/OUTPUTS

Relay outputs
 2 discrete floating relay switch outputs
Connector type
 3-pin "phoenix style" (a.k.a. "euro style") detachable terminal blocks
Configuration
 Electromechanical relay
Pinout
 1:NC   2:NO   3:COM
Switching capacity (nom)
 1A 30 VDC
Logic outputs
 4 discrete outputs
Connector type
 2-pin "phoenix style" (a.k.a. "euro style") detachable terminal blocks
Configuration
 Single-ended, TTL compatible
Pinout
 1:+(Signal)   2:-(CHASSIS GND)
Omni inputs 6 discrete inputs for TTL logic, voltage control or passive resistance
Connector type
 2-pin "phoenix style" (a.k.a. "euro style") detachable terminal blocks
Configuration
 Single-ended, ground referenced
Pinout
 1:+(Signal)   2:-(CHASSIS GND)
Normal operating range
 Reads signals between 0-5 V nominally
Potentiometer operation
 Use 10k ohms for full range
Voltage tolerance
 +/- 48 V
Current output
 0.5 mA with 10k pot (for passive resistive controls)
RS-232 port
 Female DB9 connector (setup and diagnostics purposes only)
QSControl port
 Neutrik Ethercon RJ45 ruggedized data connector
CobraNet port Neutrik Ethercon RJ45 ruggedized data connector
Indicators
QSControl status
 Yellow Link, Tx, Rx, front panel Green Link, Tx, Rx, rear panel
CobraNet status Yellow Link, Tx, Rx, front and rear panel
Power
 Blue, front panel
Diagnostic
 Red, front panel
DataPort status (port)
 Tri-state (red, green, yellow), front panel
LCD data display 2 line x 16 character, backlit, front panel

CHASSIS DIMENSIONS & WEIGHT

Dimensions (HxWxD) 1.72" (1RU) x 17.13" x 14.84" (43.6 mm x 435.6 mm x 376.9 mm)
Weight 10.6 lbs / 4.8 kg


Specifications subject to change without notice

QSControl.net is a trademark of QSC Audio Products, LLC
THX is a trademark of THX, Ltd.
CobraNet is a trademark of Cirrus Logic, Inc.

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QSC and the QSC logo are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries. All other trademarks are the property of their respective owners. Patents may apply or be pending.