Nova HDC 84 User Manual
Contents
IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 5
COMPLIANCE ........................................................................................................................................... 7
FOR CUSTOMERS IN EUROPE .............................................................................................................. 7
FOR CUSTOMERS IN THE USA ............................................................................................................. 7
DECLARATION OF CONFORMITY WITH FCC RULES ............................................................................. 7
FEDERAL COMMUNICATIONS COMMISSION NOTICE ......................................................................... 7
FOR CUSTOMERS IN CANADA ............................................................................................................. 8
Thanks and Unpacking ............................................................................................................................ 9
Unpacking the NOVA HDC48 series controller ................................................................................... 9
INSTALLATION INSTRUCTIONS .............................................................................................................. 10
The User Guide...................................................................................................................................... 11
Introduction and Key Features ............................................................................................................. 12
Introduction ...................................................................................................................................... 12
Key Features .................................................................................................................................. 12
Audio Connections ................................................................................................................................ 14
Input Connections ............................................................................................................................. 14
Output Connections .......................................................................................................................... 14
Using unbalanced connections ......................................................................................................... 15
Panel Layouts ........................................................................................................................................ 16
Operation .............................................................................................................................................. 18
Starting up the unit ........................................................................................................................... 18
Overview of Modules, Presets Components and Snapshots ............................................................ 18
Drive Modules ................................................................................................................................... 19
Drive Module Presets ........................................................................................................................ 20
Navigation and Designing Crossovers ............................................................................................... 21
Factory Module Presets .................................................................................................................... 21
Storing Module Presets ................................................................................................................. 22
Recalling Module Presets .............................................................................................................. 22
Recalling Components .................................................................................................................. 22
Input .................................................................................................................................................. 23
AES3 / Network Inputs .................................................................................................................. 23
Automatic Input Selection (Fallover) ............................................................................................ 24
Gain and Polarity ........................................................................................................................... 24
Delay ............................................................................................................................................. 24
High Pass Filter .............................................................................................................................. 24
Parametric Equalisation ................................................................................................................ 24
FIR Shelving EQ.............................................................................................................................. 24
Parametric Filters .......................................................................................................................... 25
Routing .......................................................................................................................................... 25
Output ............................................................................................................................................... 25
AES3 outputs ................................................................................................................................. 25
Gain and Polarity ........................................................................................................................... 25
Delay ............................................................................................................................................. 25
High and Low pass Filters .............................................................................................................. 26
LIR Crossover Filtering ................................................................................................................... 26
Parametric Equalisation and All-Pass Filters ................................................................................. 26
Limiters.......................................................................................................................................... 27
Amplifier Gain ............................................................................................................................... 28
Routing .......................................................................................................................................... 28
AES3 .............................................................................................................................................. 28
Utility Pages ...................................................................................................................................... 28
Screen Contrast ............................................................................................................................. 28
Stereo Linking ................................................................................................................................ 28
Current Ethernet IP Address ......................................................................................................... 29
IP Mode ......................................................................................................................................... 29
IP Static.......................................................................................................................................... 29
Store Snapshot .............................................................................................................................. 29
Recall Snapshot ............................................................................................................................. 29
Bandwidth Units ............................................................................................................................ 29
Aux Style ........................................................................................................................................ 29
Ethernet ............................................................................................................................................ 29
Ethernet configurations ................................................................................................................ 29
DHCP ............................................................................................................................................. 29
AUTO-IP ......................................................................................................................................... 30
Static-IP ......................................................................................................................................... 30
IP Troubleshooting ........................................................................................................................ 30
Snapshots .......................................................................................................................................... 30
AUX Port ............................................................................................................................................ 31
Latency delay .................................................................................................................................... 33
Input/Output Latencies ................................................................................................................. 33
Processing Latencies ..................................................................................................................... 33
Secure Mode ..................................................................................................................................... 34
Overlay Flush ..................................................................................................................................... 34
Revert to Factory Settings ................................................................................................................. 34
Processing Block Diagram ..................................................................................................................... 35
Input Menu Map Utility Menu Map .................................................................................... 36
Output Menu Map ................................................................................................................................ 37
EQ and Filter Response Graphs ............................................................................................................. 38
Technical Specifications ........................................................................................................................ 41
Connectors ........................................................................................................................................ 41
Environmental ................................................................................................................................... 41
Dimensions ........................................................................................................................................ 41
Options .................................................................................................................................................. 42
IMPORTANT SAFETY INSTRUCTIONS
1 Read these instructions.
2 Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings. Install in accordance with the manufacturer's
instructions.
8 Do not install near any heat sources such as radiators, heat registers, stoves or other
apparatus (including amplifiers) that produce heat.
9 Do not defeat the safety purpose of the polarized or grounding type plug. A
polarized plug has two blades with one wider than the other. A grounding type plug
had two blades and a third grounding prong. The wide blade or the third prong are
provided for your safety. If the provided plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
10 Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles and the point where they exit from the apparatus.
11 Only use attachments / accessories specified by the manufacturer.
12 Use only with the cart, tripod, bracket or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use caution when moving the cart /
apparatus combination to avoid injury from tip-over.
13 Unplug this apparatus during lightning storms or when unused for long periods of
time.
14 Refer all servicing to qualified service personnel. Service is required when the
apparatus has been damaged in any way, such as power-supply cord or plug
damaged, liquid has been spilled or objects have fallen into the apparatus, this
apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.
SAFETY WARNING
Permanent disconnection from the mains supply is to be achieved by removing the supplied
cord connector from the back of the unit.
SAFETY WARNING
Do not remove any covers, loosen any fixings or allow items to enter any aperture.
SAFETY WARNING
Objects filled with liquids should not be placed on this apparatus.
SAFETY WARNING
Replace the mains fuse only with a fuse of the same type
SAFETY WARNING
The rear of the product may get hot. Avoid direct skin contact during operation and for at
least 5 minutes after power has been isolated.
AVERTISSEMENT DE SECURITE
Pour déconnecter l'appareil de l'alimentation principale de façon permanente, débranchez
le connecteur du câble fourni à l'arrière de l'appareil.
AVERTISSEMENT DE SECURITE
Ne retirez pas les couvercles, ne desserrez pas les fixations et ne laissez aucune pièce
s'introduire dans les ouvertures.
AVERTISSEMENT DE SECURITE
Ne placez pas d'objets contenant du liquide à proximité de l'appareil.
AVERTISSEMENT DE SECURITE
Ne remplacez le fusible de réseau principal que par un fusible du même type.
AVERTISSEMENT DE SECURITE
Le radiateur arrière de cet appareil devient chaud. Evitez tout contact direct avec la peau
pendant le fonctionnement et au moins 5 minutes après la mise hors tension de l'appareil.
COMPLIANCE
FOR CUSTOMERS IN EUROPE
This product complies with both the LVD (electrical safety) 73/23/EEC and EMC
(electromagnetic compatibility) 89/336/EEC directives issues by the commission of the
European community.
Compliance with these directives implies conformity with the following European standards:
EN60065 Product safety
EN55103-1 EMC emissions
EN55103-2 EMC immunity
This product is intended for the following electromagnetic environments: E1, E2; E3 & E4.
FOR CUSTOMERS IN THE USA
This product has been tested for electrical safety and complies with:
UL60065 7th edition
DECLARATION OF CONFORMITY WITH FCC RULES
We, CRAAFT AUDIO GmbH, Gewerbering 42, 94060 Pocking, Germany, declare under our
sole responsibility that devices in the HDC range of products, comply with Part 15 of the FCC
Rules. Operation is subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
FEDERAL COMMUNICATIONS COMMISSION NOTICE
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency energy, and if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try and correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the distance between the equipment and the receiver.
Connect the equipment to an outlet on a circuit different from that to which the
receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
FCC Caution: Any changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate this equipment.
This equipment has been designed to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment.
FOR CUSTOMERS IN CANADA
This product has been tested for electrical safety and complies with:
CA /CSA C22.2 No.60065-03
DECLARATION OF CONFORMITY WITH CANADIAN ICES-003
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
Thanks and Unpacking
Thank you for choosing a NOVA HDC48 advanced system controller for your application. Please
spare a little time to study the contents of this manual, so that you obtain the best possible
performance from this unit.
All NOVA products are carefully engineered for world-class performance and reliability.
If you would like further information about this or any other NOVA product, please contact us. We
look forward to helping you in the near future.
Unpacking the NOVA HDC48 series controller
After unpacking the unit please check carefully for damage. If damage is found, please notify the
carrier concerned at once. You, the consignee, must instigate any claim. Please retain all packaging
in case of future re-shipment.
INSTALLATION INSTRUCTIONS
1 THIS PRODUCT MUST BE EARTHED. Use only a flexible cable or cord provided with a
green or green and yellow core which must be connected to the protective earthing
terminal of a suitable mains plug or the earthing terminal of the installation. The
cord must be of maximum length 7.5 meters, rated SJ, SJT, or SJE, 10A minimum and
be marked VW-1.
2 Wiring to this product must only be made by suitably qualified personnel and must
comply with all local requirements.
3 Do not install this equipment in an enclosed space. Do not limit free ventilation and
movement of air around the back panel. Ensure that there is at least 100mm (4") of
space around all sides of the product for ventilation.
4 Only use attachments and accessories approved by or specified by the manufacturer.
The User Guide
This user manual gives a progressively more detailed description of the functions of the NOVA
HDC48 series advanced system controller. A single page quick reference guide is provided for those
users who are experienced with this type of equipment and just need to know how to ‘drive’ the
front panel. A detailed explanation of the front and rear panel controls and indicators is contained in
the next section.
The final section describes each individual function or feature with annotated images explaining its
use. Where appropriate, the graphical display is shown to further elaborate on the units operation.
To complete the manual a reference section is included, describing the technical performance of the
device complete with graphs of filter responses.
Introduction and Key Features
Introduction
The NOVA HDC48 Advanced System Controller represents current state-of-the-art technology.
Taking advantage of the latest advances in analogue to digital conversion and digital signal
processing technologies the unit achieves performance levels higher than previous devices. Below is
a list of key features, followed by some information on the major advancements of the HDC feature
set.
Key Features
- NOVA minimal signal path design
- 96kHz sampling frequency provides for a nominally flat response beyond 40kHz.
- Three rotary encoders, illuminated buttons and graphical display provide a rapid, intuitive
and user-friendly control interface
- High speed capable and flexible Ethernet communications that supports DHCP, static-IP and
auto-IP and direct connection to a computer without the need for a router or a switch
- Class leading sonic performance achieved by the use of state of the art converters, a 4
th
Generation Analogue Devices Sharc DSP and highly advanced DSP algorithms
- Powerful Drive Module concept, abstraction from device centric to speaker based control
- Innovative Component Presets to allow individual outputs to be used for selected drivers of
a loudspeaker system
- Twelve layers of Parameter Overlays for trouble-free Grouping
- Unique VX limiter providing dynamic control for passive 2-way enclosures
- Unique LIR linear phase crossover shapes giving FIR-like performance without the drawbacks
- Linear phase HF system EQ profiling which provides perfect integration between enclosures
- Innovative excursion control limiter with sliding High Pass Filter; limits only the damaging
low frequencies
- Transducer thermal modelling provides regulation limiters, addressing long term overload
- Overshoot limiter governs amplitude of transient signals retaining average power whilst
constraining peak energy
- Dante audio networking with automatic fallover to Analogue or AES3
- AES3 inputs and outputs, switchable in pairs
- High performance ‘universal mains’ switch mode power supply, designed in-house
Drive Modules
The HDC48 processor has a new way of ordering and grouping channels in order to give a more
speaker-based approach to controlling, designing and recalling speaker configurations; these are
called Drive Modules. A Drive Module is the Processing provided by one Input DSP Block, and a
number of Output DSP Blocks, which are associated with one-another by means of routing. For
example, if Input DSP Block B is routed to Outputs 3 and 4, then this is a 2-way Drive Module with
Input DSP Block B forming the ‘Master’ control, and Output DSP Blocks 3 and 4 providing the driverrelated control. Overall, this forms the processing typically for one loudspeaker sub-system. The
System Engineer Drive Module control panel for this sub-system may then be used for control and
monitoring of the associated speaker.
Drive Modules may be included in Module Groups, which use the Parameter Overlay feature in the
HDC48 to achieve trouble-free Grouping in the System Engineer application.
The Presets in the HDC48 are Drive-Module centric, and are used to configure individual Drive
Modules rather than the whole device.
Importantly, Drive Modules move the focus away from the processing device, and onto the
loudspeaker systems.
A Drive Module Preset may be broken apart into Components, allowing any output to be used for
any component within a Drive Module Preset (i.e. any driver in a loudspeaker subsystem).
See Overview of Modules
Overlays
When the HDC is used in Modules view in System Engineer, this allows the modules to be grouped
into Overlay Groups. These groups allow various Input (master) parameters to be adjusted in all
modules in that group, whist maintaining independent parameter values across each group. This is
achieved in the device by combining the parameters for all the layers for a given section (Gain Delay,
EQ etc.). When an Overlay parameter is active, the Overlay indicator will become illuminated. The
combined Gain or Delay etc. associated with a given section is shown on the module panel in System
Engineer, within square brackets [ ] under the Delay and Gain for each input channel. The combined
EQ curve is shown in an olive colour. The Input Mute button in System Engineer will flash if an
overlay mute is active. On the device, the presence of an active overlay is generally indicated by
square brackets “[]” after the parameter value on the display. An input overlay mute is indicated on
the mute/clip indicator for that channel flashing. Note that overlay parameters cannot be adjusted
on the HDC device itself; these can only be controlled by the System Engineer application. However,
overlay parameters may be removed on the device – see Overlay Flush. Note that overlays are not
stored in presets or snapshots or carried in settings files.
LIR Linear Phase Crossover Filtering
The HDC also includes a new type of crossover filtering “Linear Impulse Response” (LIR) crossover
filtering, which results in a Linear Phase crossover that has a constant delay regardless of frequency
(unlike other types of crossover which delay different frequencies to a different extent, thus
smearing the arrival time). The LIR crossover can thus be described as having a flat Group Delay
response, and thus entirely free of Group Delay Distortion.
The shape of the LIR crossover filter is quite similar to a 4th order or 24dB/Oct Linkwitz-Riley filter,
and maintains zero phase difference between the adjacent bands across the crossover region to
keep the polar response rock steady.
FIR Linear Phase Equalisation
The Input High-Shelf Equalisers use Finite Impulse Response (FIR) filtering to produce Linear Phase
equalisation; that is all frequencies are delayed by the same amount, perfectly preserving the
transient response. This can also be important in applications where different amounts of EQ are
applied to different parts of a speaker cluster, such as to add 'Throw' EQ boost so that parts of
cluster which are throwing further can have HF absorption correction added. If this EQ is not linear
phase, then the zones where the speakers combine may suffer frequency response anomalies.
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