Crest Audio NC-DSP-D - TECHNICAL Technical Data

INPUT PROCESSING MODULE
FOR CKS, CKV & CKX SERIES
POWER PROCESSING AMPLIFIERS
NC-DSP-D
Product Information
The NC-DSP-D Module fits in the Input Processing bay located on the
rear panel of Crest Audio CKS, CKV & CKX Series Power Processing
amplifiers. It provides state-of-the-art digital signal processing integrat-
ed with the amplifier channel. Input to the NC-DSP-D is via an
AES/EBU digital port, removing the need for an extra D/A A/D conver-
sion. This reduces cost and noise, and improves system performance.
Two post-processing analog outputs are provided to daisy chain to addi-
tional amp channels requiring the same processing.
Features:
• Digital signal processing and attenuation programmed by NexSys or N-Coder/PC software.
• Can be used stand-alone after being programmed
• Balanced input barrier strip connectors
• Analog loop-thru post-processing outputs on barrier strip connectors
• Crossover, EQ, delay, and dynamics functions
• Data error LED indicator
Internal Features
• Jumper-selectable gain of X20 (26 dB), X40 (32 dB, factory setting), or constant sensitivity for full output at 0dBu (.775V) in.
N C - D S P - D c o n n e c t i o n s
Designed & manufactured in the USA by:
CLASS 2
WIRING MAY
BE USED
Output
Model Output Power
Name @70.7V
–
CKV 100 50W
A
CKV 200 100W
+
CKV 400
200W
CKV 800
400W
CKV 1600
800W
CKV 2400
1200W
+
B
Network
–
Signal
Ground
Lift
Jumper
+ – + –
NexSys Bus
Architects and Engineers Specifications - NC-DSP-D.
The module shall plug into Crest Audio CKS or CKV Power Processing amplifiers in the
Input Processing bay. The module shall provide full DSP (digital signal processing) func-
tions. Capabilities for EQ, cross-over filters, delay, dynamics control, etc. shall be achiev-
able. The module shall be capable of being programmed and updated over the NexSys net-
work (if fitted in a CKS or CKV amplifier loaded with an NC-NXS module and NexSys-
compatible Power/Output module). The module shall operate as a stand-alone unit after
Digital Signal Processor (DSP)
PC Lap-Top running
N-Coder/PC software
Crest Audio Inc.
100 Eisenhower Dr.
Paramus, New Jersey 07652 USA
Model Output Power
Name @8 /Ch.
CKS 100 50W
CKS 200
100W
CKS 400 200W
CKS 800 400W
CKS 800-2 400W
CKS 1200-2 600W
CKS 1600-2
800W
Address
Model
NC-NXS
Data
8
8
Hi Lo
An internal jumper selects between gains of X20 (26 dB), X40 (32 dB),
or constant sensitivity for full output at 0dBu (.775V) in. The standard
factory setting is for X40 (32dB). Individual channel attenuators are pro-
vided with removable knobs for extra security.
Via NexSys ® or N-Coder/PC software, algorithms are down-loaded to
the NC-DSP-D to perform crossover, equalizing, driver alignment, sys-
tem delay, limiting, compression, gating functions, etc. All the require-
ments for loudspeaker processing can be performed by the NC-DSP-D.
• AES/EBU digital input
• Two delays are equivalent to 600 feet (183 meters) each
• Amp channel gain pot knobs removable for security
• Simple setup, tamper-proof configuration
N-Coder
Crest Audio
Revision 1.03E
OR
N-Coder
Data
Port
Error
Daisy Chain
AES/EBU
Output A Output B
In
+ +
– –
To other
amplifiers
being programmed with the N-Coder/PC software. The audio input shall be of AES/EBU
type on a three pin XLR. Two, post-processing, analog outputs on barrier strip connectors
shall be provided to loop-thru out to additional amp channels requiring the same processing.
Two removable-knob gain pots shall be provided that control the level of each amplifier
channel independent of programming. The module shall be designated the Crest Audio
model NC-DSP-D.
Power
Processing
Modules
Digital
Signal
Source
AES/EBU
In
5
Level 4
6
A 3
7
2
8
1
9
0
10
5
Level 4
6
B
3
7
2
8
1
9
0
10
Model NC-DSP-D