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Crown I-Tech 4x3500HD DriveCore Series Operation Manual

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I-Tech 4x3500HD DriveCore™ Series

Operation Manual

Product Registration: Register your new product at http://warranty.harmanpro.com.
Obtaining Other Language Versions: To obtain information in another language about the use of this product, please contact your
local Crown Distributor. If you need assistance locating your local distributor, please contact Crown at 574-294-8000 or
www.crownaudio.com.
This manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover every possible
situation which may arise during installation, operation or maintenance.
The information provided in this manual was deemed accurate as of the publication date. However, updates to this information may have
occurred. To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com.
Trademark Notice: Crown, Crown Audio, IQ, BCA, and Amcron are registered trademarks of Crown International. HiQnet is a
trademark of Harman International Industries, Inc. Other trademarks are the property of their respective owners.
Some models may be exported under the name Amcron.
©2015 by Harman International, 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A. Telephone: 574-294-8000
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Summary of Contents for Crown I-Tech 4x3500HD DriveCore Series

  • Page 1: Operation Manual

    To obtain the latest version of this manual, please visit the Crown website at www.crownaudio.com. Trademark Notice: Crown, Crown Audio, IQ, BCA, and Amcron are registered trademarks of Crown International. HiQnet is a trademark of Harman International Industries, Inc. Other trademarks are the property of their respective owners.

  • Page 2: Important Safety Instructions

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers Important Safety Instructions Wichtige Sicherheitsinstruktionen The I-Tech Series amplifiers are certified only at 120V in Canada. DECLARATION of CONFORMITY Harman International Importantes Instructions de Sécurité Instrucciones de Seguridad Importantes IMPORTANT I-Tech Series amplifiers require Class 2 output wiring.

  • Page 3: Table Of Contents

    • AES3 digital audio input with V-Drive. general overheating, under/over volt age, 3.3 Green Savings ................11 12 Appendix A: Network and CobraNet Basics ....52 16.8 Crown’s Implementation of FIR Filters ........61 2,100W extremely high power levels. They must be 70Vrms Direct high-frequency overloads and internal faults.

  • Page 4: Setup

    The field is strongest on the right side and right your amplifier, make sure you read and a ferrite core (Figure 2.4), available from Crown Audio Inc. This is to ensure bottom of the amplifier (facing the amplifier). observe the Important Safety Instruc- compliance with emission regulations.
  • Page 5 Channel 3 Channel 4 Figure 2.6 Unbalanced Analog Input Connector Wiring Crown recommends using pre-built or professionally wired, high- quality, two-, four-, or eight-conductor, heavy gauge speaker wire and connectors. Use Class 2 output wiring. You may use a 4-pole ®...

  • Page 6: Harman Greenedge - Going 'Green

    2 x mono mode Weight Savings (Freight): from vehicles because the shipper is able to either reduce the NOTE: Crown provides a reference of wiring pin assignments for commonly used • Reduces ~400 Metric tons of greenhouse gas annually amount of vehicles needed to transport the goods or the vehicle is connector types in the Crown Amplifier Application Guide available at not running up to its weight limits resulting in less fuel economy.

  • Page 7: Integraded Drivecore

    4 Integrated DriveCore Technology 5 Powered by Crown This I-Tech HD Series amplifier is compatible with the Powered by Crown Class D and Class I amplifiers are notable for extraordinarily high app. For more information visit: efficiency and being well suited for driving difficult reactive loads such http://www.crownaudio.com/mobileapplications/index.htm...

  • Page 8: Operation

    AC power is available. The LED will flash when the AC threshold so that at full level no components in the audio signal chain (sig nal levels) please refer to the Crown Amplifier Application Guide, 5. Tampering with the circuitry, or making unauthorized circuit Usually this means that the amplifier must be menu.

  • Page 9: Back Panel Controls, Indicators And Connectors

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 6 Operation 7 Advanced Operation 6.5 Back Panel Controls, Indica tors It is not recommended to loop through more than four 7.1 Introduction operation off of one connector, the bottom NL8 H.

  • Page 10: Advanced Operation

    Bridge Mono mode. Turn an Encoder knob to choose among those three Operation Example 1 Crown logo. After a few seconds, the firmware version appears, then the attenuation for each channel by using Next and pressing the encoder amplifier’s DSP is displayed. It can be modified only in System Architect preset, press the Encoder, then press and hold the Encoder to confirm.
  • Page 11 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation Attenuator Limits: You can set the maximum attenuation from 0 dB to Input Sources: For each channel, turn the Encoder to select ana log, digital, Maximum Analog Input: Use Next and press the encoder wheel to select: Bandpass Gain: In each channel of the I-Tech HD’s DSP, just before the Input Delay: Sets the input signal delay in each channel.
  • Page 12 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation LevelMax - RMS Voltage Limiter: Limits the output rms voltage to an LED Meter Display Type : Here you can set the LCD bar meters to display Front Panel Blackout: This screen lets you black out the front panel display 7.2.2 MONITOR MENU Thermal Temp deg.
  • Page 13 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation Low Limit Load Errors: This screen lets you view low-load errors without 7.2.4 NETWORKING MENU SLM (Sweep Load Monitoring) Errors: This screen lets you view SLM Fan Errors: When a fan error occurs, the count displayed in this screen is HiQnet Node Address: This screen lets you set the HiQnet address of this Subnet Mask: You set the Subnet Mask of the amplifier here.

  • Page 14: Introduction

    We will describe each type of preset in detail. To access the CobraNet Menu from the Attenuation screen, press the Encoder the Encoder knob to adj. Crown and JBL engineers have designed I-Tech HD DSP presets that are 7.3.1 Introduction 7.3.2 User Presets knob, then press Prev.

  • Page 15: Digital Audio Options (Aes3 And Vdrive)

    Con nect an AES3 signal to the AES3 connector on the Preset The selected preset has been successfully loaded. Crown’s latest-generation Digital Signal Processing is built into the rear panel. The amplifier has a digital buffer converter so it will adapt to 7.6.1 Network Troubleshooter Loaded I-Tech HD amplifier.
  • Page 16 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.1 Amplifier DSP Selection Screen 7.7.3 Input Level, Fades, Mute, Link, I/O Level Meters, and Indicators On the left of this screen is the Input and Output Signal Level Monitor (explained later on this page). On the right This panel is on the left side of the I-Tech HD’s main control panel shown above.
  • Page 17 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.4 Input Signal Router 7.7.5 Source Configuration In this screen you can configure the levels and settings of the Each channel of the I-Tech’s signal processing has an Input Signal Router that analog, AES and CobraNet inputs.
  • Page 18 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 4 Advanced Operation 7.7.6 CobraNet Advanced Settings 7.7.7 Input Signal Compressor In the CobraNet Advanced Settings screen you can set the An input signal compressor is available for each channel. Several parameters control this parameters shown here.
  • Page 19 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.9 Input EQ and Output EQ These screens let you adjust channel equalization for up to 16 frequencies. You can select filter type, frequency, gain, and bandwidth in octaves or Q as set by the user preferences in System Architect.
  • Page 20 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.11 LevelMax Suite 7.7.13 Amplifier Settings Continuous Load Monitoring This is a suite consisting of a peak voltage limiter, average power limiter, clip limiter and thermal The Amplifier Output Enable button turns each channel on The load supervision feature allows real-time monitoring of the transducer limiter.
  • Page 21 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.14 Amplifier Information 7.7.17 Preset Manager The control settings for all the functions can be stored Information about the amplifier is stored in the software system inven tory and is displayed on the software as presets.
  • Page 22 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 7 Advanced Operation 7 Advanced Operation 7.7.18 Signal Generator Maximum analog Fixed gain All channels share a noise generator that allows input noise to be mixed into the audio signal. This is useful Low +21 26/32 dB Low +21 dBu (0 dB) for noise masking applications and testing.

  • Page 23: Troubleshooting

    • The amplifier’s power switch is off. operating. Refer the unit to an authorized • Ethernet link is broken. Crown Service Center. • Ready LED is off. Channel has been set to standby mode via the software. • Amplifier is in blackout mode. Press or turn an Encoder to reactivate the LCD CONDITION: COND indicator is off.

  • Page 24: Specifications

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 9 Specifications 9 Specifications Performance I-Tech 4x3500HD Minimum Guaranteed Power I-T4x3500HD Damping Factor (8Ω): 20Hz to 100Hz > 5000 20 Hz - 20 kHz with 0.35% THD, all channels driven 20 Hz - 20 kHz 1 kHz 20ms Burst 3,500W...
  • Page 25 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 9 Specifications 9 Specifications Charts Figure 9.1 Typical Frequency Response (1W) Figure 9.2 Typical Crosstalk vs. Frequency Figure 9.3 Typical Damping Factor vs. Frequency page 48 page 49 Operation Manual Operation Manual...

  • Page 26: Ac Power Draw And Thermal Dissipation

    I-Tech 4x3500HD AC Current Draw and Thermal Dissipation: Architect if fans are not operating. Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Crown’s Switching Power Supply minimizes the Cir cuitry Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.

  • Page 27: Appendix A: Network And Cobranet Basics

    ONE component on the remote network that can act Each component in a HiQnet network has three addresses to identify it: as a Discovery Proxy. Currently, all networked Crown products except the PIP Lite can • Media Access Control (MAC) Address function in this capacity.

  • Page 28: A Closer Look At Cobranet

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 12.2 A Closer Look at CobraNet Licensed by Cirrus, CobraNet is a protocol, firmware and hardware that lets you trans- mit digital audio over a 100Base-T Fast-Ethernet network. This section provides an overview of CobraNet.

  • Page 29: Levelmax Limiter Suite

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 13 LevelMAX Limiter Suite 14 LevelMAX Limiters The I-Tech HD LevelMAX™ Limiter Suite features three types of limiting: 14.1 LevelMAX Peak Limiter constant regardless of whether the LevelMAX Limiter suite is enabled 14.8 LevelMAX Transducer Thermal Limiter (ON) or bypassed (OFF).

  • Page 30: Rms Threshold (Vrms)

    I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers 15 Appendix B: Table of Parameters Modified by Each Mode with LevelMAX Limiter Suite Enabled SV Value Range Auto Peak max for each model (online) Parameter Auto Advanced Visible in Main Panel Parameter Auto...

  • Page 31: Application Of Fir Filters To Loudspeakers Crossovers

    Polar lobing is a potential problem when spatially separated The resource requirements of a high-performance FIR filter in terms of The powerful DSP processing in the latest Crown I-Tech HD Series The following table lists several characteristics of the two types of...

  • Page 32: Filter Design

    After the initial crossover. In each graph, individual curves are shown for the low pass produced by the Crown I-Tech HD amplifier and the resultant summed Loudspeaker System an analog filter frequency response specification into digital algorithm are essential to low latency operation at 96 kHz.

  • Page 33: Fir Measurements

    16.15 Refereces reversed-polarity on-axis response and the ±25° off-axis response. The Crown I-Tech HD amplifier was used to create a linear-phase FIR For those who want a more in depth treatment of the topics in this white note that when the tweeter leads are reversed, the response exibits a crossover with a 3.67 ms latency.

  • Page 34: Service

    *Warranty is only valid within the United States of America. For warranty service, we will pay for ground shipping both pos session of Crown after 30 days of the estimate will that it has adequate protection. We recommend you For information on Warranty outside of the U.S.A, please This Crown Warranty is in effect only for failure of fees for such for eign shipments.)
  • Page 35 I-Tech HD DriveCore Series Power Amplifiers I-Tech HD DriveCore Series Power Amplifiers THIS PAGE INTENTIONALLY LEFT BLANK THIS PAGE INTENTIONALLY LEFT BLANK page 68 page 69 Operation Manual Operation Manual...
  • Page 36 Shipping Address: HARMAN Factory Service, 1718 W. Mishawaka Rd., Elkhart, IN 46517 You may also request a service return authorization at www.crownaudio.com/support/rma PLEASE PRINT CLEARLY SRA #: _________________________________________________________________________________ (If sending product to Crown factory service) Model: __________________________ Serial Number: ______________________________ Purchase Date: ________________________________________________________ PRODUCT RETURN INFORMATION...

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