Table Of Contents - Crown I-Tech 4x3500HD DriveCore Series Operation Manual

Table of Contents

Important Safety Instructions ............................................................2
7.3 Presets ................................................................................... 27
Declaration of Conformity ..................................................................3 7.4 List of Pop-Up and Descriptions ............................................. 28
Table of Contents ..............................................................................4 7.5 Digital Audio Options (AES3 and VDrive) ................................ 29
1 Welcome ........................................................5 7.6 Networking the Amplifier ......................................................... 29
1.1 Features .................................................................................5
7.7 Software- Controllable Onboard DSI ....................................... 29
1.2 How to Use This Manual .........................................................5
8 Troubleshooting ................................................44
2 Setup .............................................................6 9 Specifications ...................................................46
2.1 Unpack and Install Your Amplifier ..........................................6 10 AC Power Draw and Thermal Dissipation ..................50
2.2 Connecting to AC Mains ........................................................7 11 Advanced Features ............................................51
2.3 Wire Inputs and Outputs .........................................................7
11.1 Protection Systems ............................................................... 51
3 HARMAN GreenEdge - Going 'Green' ........................11
11.2 Global Switching Power Supply with PFC ............................. 51
3.1 Going 'Green' ..........................................................................11
11.3 6th Generation Class I Circuitry ............................................ 51
3.2 The Sound of Efficiency ..........................................................11 11.4 Color-Coded Rear Overlay .................................................... 51
3.3 Green Savings ........................................................................11 12 Appendix A: Network and CobraNet Basics ................52
4 Integraded DriveCore TM Technology ..........................12 12.1 HiQnet Networks ................................................................... 52
5 Powered by Crown ..............................................13
12.2 A Closer Look at CobraNet .................................................... 52
6 Operation ........................................................14
13 LevelMAX
6.1 Protecting Your Speakers .......................................................14 14 LevelMAX Limiters ............................................57
6.2 Startup Procedure ..................................................................14 14.1 LevelMAX Peak Limiter ......................................................... 57
6.3 Precautions ............................................................................14 14.2 Peak Limiter Threshold (Vpk) ................................................ 57
6.4 Front Panel Controls and Indicators ........................................15 14.3 Peak Limiter Attach (sec)....................................................... 57
6.5 Back Panel Controls, Indicators and Connectors .....................16
14.4 Peak Limiter Release (sec) .................................................... 57
7 Advanced Operation ............................................17
14.5 Peak Limiter Look Ahead....................................................... 57
7.1 Introduction ............................................................................17 14.6 Level MAX RMS Limiter ........................................................ 57
7.2 Operation Example ..................................................................18 14.7 RMS Threshold (VRMS) ....................................................... 57
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I-Tech HD DriveCore Series Power Amplifiers
14.8 LevelMAX Tranducer Thermal Limiters ................................. 57
14.9 Thermal Voltage (VRMS) ...................................................... 57
14.10 Thermal Response Time (s)................................................. 57
15 Appendix B: Table of Parameters Modified by Each Mode
with LevelMAX ....................................................58
16 Application of FIR Filters to Loudspeakers Crossovers ..60
16.1 FIR Overview ......................................................................... 60
16.2 What are IIR Filters and FIR Filters? ....................................... 60
16.3 Pros and Cons of IIR and FIR Filters ...................................... 60
16.4 Desirable Attributes of FIR Filters .......................................... 60
16.5 High Rolloff and Steep Slopes ............................................... 61
16.6 Stop-band Attenuation .......................................................... 61
16.7 FIR Polar Lobing Eror............................................................ 61
16.8 Crown's Implementation of FIR Filters ................................... 61
16.9 FFT Convolution ................................................................... 61
16.10 Filter Design ....................................................................... 61
TM Limiter Suite ....................................56 16.11 Low Latency 96 kHz Studio Quality Filters ........................... 62
16.12 Measurements of Two-way Loudspeaker System ................ 62
16.13 FIR Measurements .............................................................. 64
16.14 Conclusions ....................................................................... 65
17 Service ..........................................................66
17.1 International and Canada Service .......................................... 66
17.2 US Service ............................................................................ 66
18 Warranty ........................................................67
I-Tech HD DriveCore Series Power Amplifiers
I-T4x3500HD
20 Hz - 20 kHz
2-ohm 2,100W
2,200W
2.7-ohm
2,400W
4-ohm
1,900W
8-ohm
4-ohm Bridge 4,200W
4,800W
8-ohm Bridge
2,100W
70Vrms Direct
100Vrms Direct 2,300W
Minimum power in watts with 0.35% THD, all channels driven.
Operation Manual Operation Manual
1 Welcome
The Crown I-Tech HD DriveCore Series offers
® • Onboard high-definition analog devices
1 kHz 20ms Burst amazing power, light weight and ease of use for
Sharc ® processor DSP with 24-bit, 192 kHz
touring sound applications. Unlike other SHARC A/D and D/A converters. Advanced IIR
3,500W
amplifiers, it includes onboard high-definition filters and linear-phase FIR filters.
3,800W
DSP, a 4.3" LCD screen, and a built-in network
4,000W
• Pushbutton presets simplify setup. Custom
connection.
1,900W
presets for various loudspeakers can be
7,000W Modern power amplifiers are sophisticated
down loaded.
6,000W pieces of engineering capable of producing
• AES3 digital audio input with V-Drive.
extremely high power levels. They must be
treated with respect and correctly installed if
• EtherCon
they are to provide the many years of reliable
control or CobraNet digital audio transport.
service for which they were designed.
This "Single Plug" connection allows HiQnet
protocol and CobraNet digital audio, and
In addition, I-Tech Series amplifiers include a
VDrive through the same CAT 5 cable.
number of features which require some
expla nation before they can be used to their
• LCD Control Screen is used to adjust the
maxi mum advantage.
amplifier's attenuation and muting, configure
the amp, set up and view error monitoring, and
Please take the time to study this manual so that
recall DSP presets to reconfigure the amp for
you can obtain the best possible service from
various applications.
your amplifier.
• Comprehensive array of indicators provide
1.1 Features
accurate diagnostics: Power, Data, along with
• Global Power Supply with PFC (Power Fac tor Ready, Signal, Clip, Thermal and Fault for each
Correction) works anywhere in the world. channel.
• High power density, up to 12,000 watts in a • AC mains indicator in power switch glows
2U chassis. green when AC power is present.
• Output voltage of 185Vpk provides clean • Front-panel USB connector accepts a USB
transient peaks.
drive to transfer presets from the drive to the
amplifier DSP, and vice versa. This feature also
• 6th-generation patented Class I (BCA with
®
allows you to update the amplifier's firmware.
Drivecore Technology) cir cuitry couples power
efficiently to the load and provides low AC
• Light weight due to aluminum chassis,
current draw.
spe cial internal construction, switching power
supply and patented class-I output stage with
DriveCore Technology.
• Thermal management controller and two
dis crete thermal zones with variable-speed fans,
forced-air cooling.
• Advanced protection circuitry guards against:
shorted outputs, DC, mismatched loads,
general overheating, under/over volt age,
high-frequency overloads and internal faults.
®
Ethernet con nector for HiQnet™
• Five-Year, No-Fault, Fully Transferable
Warranty completely protects your investment
and guarantees its specifications.
1.2 How to Use This Manual
This manual provides you with the necessary
information to safely and correctly setup and
operate your amplifier. It does not cover every
aspect of installation, setup or operation that
might occur under every condition. For
addi tional information, please consult the
online help in System Architect software,
Crown's Amplifier Application Guide, I-Tech
Application Guide (available online at www.
crownaudio.com), Crown Technical Sup port,
your system installer or retailer.
We strongly recommend you read all
instruc tions, warnings and cautions contained
in this manual. Also, for your protection, please
send in your warranty registration card today.
And save your bill of sale - it's your official
proof of purchase.
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