Crown I-Tech HD User Manual

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I-Tech HD Series Operation Manual

Models: I-T5000 HD, I-T9000 HD, I-T2000 HD

Obtaining Other Language Versions: To obta in inform ation in ano ther lan guage ab out the

use of t his produc t, plea se conta ct your loc al Crown Di stribut or. If you nee d assist ance loc ating your lo cal distributo r, plea se conta ct Crown at 574- 294-8 000.

This manual does n ot include all of the d etails of de sign, produ ctio n, or va riations of t he equipment. Nor does it c over ever y pos sible situa tion w hich may arise during installation, operation or maintenance.

The information provided in this manual w as de eme d acc urate as of t he publica tion date. However, upd ate s to this infor mation may have occur red. To obtain the latest version of this manu al, please v isit the Crow n website a t www.cro wnaudio.com.

Trademark Notice: Crown, Crown A udio, a nd Am cron are registe red trademar ks of Crown International. Other tradem arks are the property of their respective owners . Lat er versions of this manual and additional in form atio n about this p rodu ct may be available at th e Crown website at www.crownau dio.com.

Some models may be expor ted under t he name Amcr on

5009241 - 11/11

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Important Safety Instructions

1. Read t hese instructions.

2. Keep t hese instructions.

3. Heed all war nings.

4. Follow all instr uctions.

5. Do not us e this appar atus near w ater.

6. Clea n only with a dr y 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 defe at th e saf ety purpose of the polarized or grounding-t ype plug . A polarize d plug has t wo blade s with one wid er than the other. A grounding -type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not ﬁt into your outlet, consult an electrician for replace ment of the obsolete outlet.

10. Prot ect t he 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 att achments/accessories speciﬁed by the manufacturer.

12. Use only with a car t, st and, tripod, bracket, or table speciﬁed by the manufacturer, or sold with the apparatus. When a car t is used, us e cau tion when moving the cart /apparatus combination to avoid injury from tip -over.

13. Unplug this apparat us during lightning storms or when unused for long periods of time.

14. R efer all se rvicing to q ualiﬁed se rvice pe rsonnel. S ervicin g is required when the apparatus ha s bee n dam aged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or m oisture, does not oper ate normall y, or has b een dropped.

15. U se the main s plug to disco nnect th e appara tus from th e mains.

16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK , DO NOT EXPOSE T HIS APPAR ATUS TO RAIN OR MOISTURE.

17. DO NOT EXPOSE T HIS EQUIPMENT TO DRIPPING OR SPL ASHING AND ENSURE T HAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE PLACED ON T HE EQUIPMENT.

18. THE MAINS PLUG OF THE POW ER SUPPLY CORD SHALL REMAIN RE ADILY OPER ABLE.

TO PRE VENT ELECTRIC SHOCK DO NOT REMOV E TOP OR BOTTOM COVERS. NO USER SERVICEABL E PAR TS INSIDE. R EFER SER VICING TO QUA LIFIED SERVICE PERSONNEL.

SUPPLY CORD SHALL REMA IN RE ADILY OPERA BLE.

WATCH FOR THESE SYMBOLS:

XLS Series ampliﬁers require Class 2 out put wiring.

CAUTION! Do not locate sensitive high-gain equipm ent such as preampliﬁers or tape decks directly above or below the unit. Becaus e this ampliﬁe r has a high power density, it has a st rong magnetic ﬁeld which can induce hum into unshielded de vices that are loca ted near by. The ﬁeld is s tronges t just above a nd below th e unit.

If an equipment rack is used, we recommend loc ating the ampliﬁer(s) in the bottom of the rack and the preampliﬁer or other sensitive equipment at the top.

This device complies 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.

CAUTION: Changes or modiﬁcations not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B 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 instruction manual, 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 to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into 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.

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWE R SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POW ER

Issued By: Harman International.

DECLARATION OF CONFORMITY

1718 W. Mishawaka Rd. Elkhart, IN 46517 U.S.A.

The lig htning bolt t riangle is us ed to aler t the user to the ris k of electric shock.

The exclamation point triangle is used to alert the user to impor tant operating or mainte nance instructions.

IMPORTANT

MAGNETIC FIELD

FCC COMPLIANCE NOTICE

European Representative’s Name and Address:

David J. Budge 10 Harvest Close Yateley GU46 6YS United Kingdom

Equipment Type: Commercial Audio Power Ampliﬁers Family Name: I-Tech HD Model Names: I-T5000 HD, I-T9000 HD, I-T12000 HD

EMC Standards:

EN 55103-1:1997 Electromagnetic Compatibility – Product Family Standard for Audio, Video, Audio-Visual and Entertainment

Lighting Control Apparatus for Professional Use, Part 1: Emissions

EN 55103-1:1997 Magnetic Field Emissions-Annex A @ 10 cm and 1 M

EN 61000-3-2:2005 & Amd 1: 2008 Limits for Harmonic Current Emissions (equipment input current ≤16A per phase)

EN 61000-3-3:1998 Limitation of Voltage Fluctuations and Flicker in Low-Voltage Supply Systems Rated Current ≤16A

EN 55022:2006 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE: Radiated, Class B Limits;

Conducted, Class B

EN 55103-2:1997 Electromagnetic Compatibility – Product Family Standard for Audio, Video, Audio-Visual and Entertainment

Lighting Control Apparatus for Professional Use, Part 2: Immunity

EN 61000-4-2:2001 Electrostatic Discharge Immunity (Environment E2-Criteria B, 4k V Contact, 8k V Air Discharge)

EN 61000-4-3:2006 Radiated, Radio-Frequency, Electromagnetic Immunity (Environment E2, Criteria A)

EN 61000-4-4:2007 Electrical Fast Transient/Burst Immunity (Criteria B)

EN 61000-4-5:2006 Surge Immunity (Criteria B)

EN 61000-4-6:2006 Immunity to Conducted Disturbances Induced by Radio-Frequency Fields (Criteria A)

EN 61000-4-11:2001 Voltage Dips, Short Interruptions and Voltage Variation

Safety Standard:

IEC 60065: 2001: 7Ed & Amd 1: 2005 Safety Requirements - Audio Video and Similar Electronic Apparatus

I certify that the product identiﬁed above conforms to the requirements of the EMC Council Directive 89/336/EEC as amended by 92/31/EEC, and the Low Voltage Directive 73/23/EES as amended by 93/68/EEC.

Signed _____________________________

Terry Davenport Director of Manufacturing

Due to line current harmonics, we recommend that you contact your supply authority before connection.

FOR COMPLIANCE QUESTIONS ONLY:

Sue Whitﬁeld 574-294-8289 Sue.Whitﬁeld@harman.com

Date of Issue: November 1, 2008

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Operation ManualOperation Manual

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

1.5 In.

3.8 cm

3.5 In.

8.9 cm

16.2 In.

41.1 cm

48.3 cm

19 In.

Get Started

Welcome

This is the Crown® I-Tech HD Series offers amazing power, light weight and ease of use for touring sound applications. Unlike other ampliﬁers, it includes onboard high-deﬁnition DSP, an LCD control screen, and a builtin network connection.

Modern power ampliﬁers are sophisticated pieces of engineering capable of producing extremely high power levels. They must be treated with respect and correctly installed if they are to provide the many years of reliable service for which they were designed.

In addition, I-Tech Series ampliﬁers include a number of features which require some expla nation before they can be used to their maxi mum advantage.

Please take the time to study this manual so that you can obtain the best possible service from your ampliﬁer.

Features

1. Global Power Supply with PFC (Power Fac tor Correction) works anywhere in the world.

2. High power density, up to 8000 watts in a 2U chassis.

3. Highest output voltage in the industry (200V peak) provides clean transient peaks.

4. 3rd-generation patented Class I (BCA®) cir cuitry couples power efﬁciently to the load and provides low AC current draw.

5. Onboard high-deﬁnition DSP with 24-bit, 192 kHz Cirrus Logic SHARC A/D and D/A converters. Advanced IIR ﬁlters and linear-phase FIR ﬁlters.

6. Pushbutton presets simplify setup. Custom presets for various loudspeakers can be down loaded.

7. AES/EBU digital audio input.

8. EtherCon® Ethernet con nector for HiQnet™ control or CobraNet digital audio transport. This “Single Plug” connection allows HiQnet protocol and CobraNet digital audio through the same CAT 5 cable.

9. Analog and digital thru connectors.

10. LCD Control Screen is used to adjust the ampliﬁer’s attenuation and muting, conﬁgure the amp, set up and view error monitoring, and recall DSP presets to reconﬁgure the amp for various applications.

11. Comprehensive array of indicators provide accurate diagnostics: Power, Data, along with Ready, Signal, Clip, Thermal and Fault for each channel.

12. AC mains indicator in power switch glows green when AC power is present.

13. Front-panel USB connector accepts a USB drive to transfer presets from the drive to the ampliﬁer DSP, and vice versa.

14. Light weight due to aluminum chassis, spe cial internal construction and switching power supply.

15. Thermal management controller and two dis crete thermal zones with variable-speed fans, forced-air cooling.

16. Advanced protection circuitry guards against: shorted outputs, DC, mismatched loads, general overheating, under/over volt age, high-frequency overloads and internal faults.

17. Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its speciﬁcations.

Setup

Unpack and Install Your Ampliﬁer

When Please unpack and inspect your ampliﬁer for any damage that may have occurred during transit. If damage is found, notify the transpor tation company immediately. Only you can ini tiate a claim for shipping damage. Crown will be happy to help as needed. Save the shipping carton as evidence of damage for the shipper’s inspection.

We also recommend that you save all packing materials so you will have them if you ever need to transport the unit. Never ship the unit without the factory pack.

YOU WILL NEED (not supplied):

1. Input wiring cables

2. Output wiring cables

3. Ethernet cables

4. Rack for mounting ampliﬁer (or a stable surface for stacking)

WARNING: Before you start to set up your ampliﬁer, make sure you read and observe the Important Safety Instruc tions found at the beginning of this manual.

CAUTION: Before you begin, make sure your ampliﬁer is disconnected from the power source, with the power switch in the “off” position and all level controls turned completely down (counterclock wise).

Use a standard 19-inch (48.3 cm) equipment rack (EIA RS-310B).

You may also stack amps without using a cabinet.

NOTE: When transporting, ampliﬁers should be supported at both front and back.

Magnetic Field

CAUTION! Do not locate sensitive high-gain equipment such as preampliﬁers or tape decks directly above or below the unit. Because this ampliﬁer has a high power density, it has a strong magnetic ﬁeld which can induce hum into unshielded devices that are located nearby. The ﬁeld is strongest on the right side and right bottom of the ampliﬁer (facing the ampliﬁer).

If an equipment rack is used, we recommend locating sensitive equipment at least 20 cm (8 inches) away from the ampliﬁer.

When using an equipment rack, mount units directly on top of each other. Close any open spaces in rack with blank panels. DO NOT block front or rear air vents. The side walls of the rack should be a minimum of two inches (5.1 cm) away from the ampliﬁer sides, and the back of the rack should be a minimum of four inches (10.2 cm) from the ampliﬁer back panel.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Connecting to AC Mains

WARNING: The third (ground) prong of the supplied AC power cord connector is a required safety feature. Do not attempt to disable this ground connection by using an

adapter or other methods.

Ampliﬁers don’t create energy. The AC mains voltage and current must be sufﬁcient to deliver the power you expect. You must operate your ampliﬁer from an AC mains power source with not more than a 10% variation above or a 15% variation below the ampliﬁer’s speciﬁed line voltage range and within the speciﬁed frequency requirements (indicated on the ampliﬁer’s back panel label). If you are unsure of the output voltage of your AC mains, please consult your electrician.

Packed with your I-Tech ampliﬁer is a clip that retains the power cord so it can’t pull out accidentally.

1. Locate the clip in a bag in the I-Tech packing carton.

2. Locate the IEC power connector on the back of the ampliﬁer. Above and below that connector are two slots. Stretch the ends of the clip and insert them into the slots.

Slot

3. Plug the power cord all the way into the ampliﬁer IEC power connector.

4. Pull the clip to the left and snap it onto the power cord.

IEC Power Connector

Slot

Clip

Wire Inputs and Outputs

Wiring basics

• Always use shielded wire for input wiring. The higher the density of the shield (the

outer conductor) the better. Spiral wrapped shield is not recom mended.

• When using unbalanced lines keep the cables as short as possible.

Avoid lengths greater than 10 feet (3 meters).

• Do not run the audio input cables together with the high-level wiring such as loudspeaker wires or

AC cords. (This lessens the chance of hum and noise being induced into the input cables.)

• Turn the entire sound system off before changing any connections. Crown is not liable

for damage incurred when any transducer or compo nent is over driven.

THE CHANNEL 2 INPUT IS IGNORED by default in Bridge Mono mode. It can be summed using the input source selector and used instead of Channel 1.

Choose Input Wire and Connectors

Crown recommends using pre-built or professionally wired, bal anced line (two-conductor plus shield), 22-24 gauge cables and connectors. Use 3-pin male XLR connectors.

Unbalanced line may also be used but may result in noise over long cable runs.

The image below on the left shows connector pin assignments for balanced analog wiring or AES/EBU digital wiring. The use of standard analog cable with AES/EBU will result in diminished performance. For best results, 110 ohm shielded twisted-pair cable for AES/EBU signals is highly recommended. The image below on the right shows connector pin assignments for unbalanced analog wiring.

NOTE: Custom wiring should only be performed by qualiﬁed per sonnel.

Choose Output Wire and Connectors

Crown recommends using pre-built or professionally wired, high-quality, two- or four-conductor, heavy gauge speaker wire and connectors. Use Class 2 output wiring. You may use a 4-pole Speakon plugs, spade lugs, or bare wire for your output connectors. To prevent the possibility of short circuits, wrap or otherwise insulate exposed loudspeaker cable connectors.

CAUTION – SHOCK HAZARD: Potentially lethal voltages exist at the output connectors when the ampliﬁer is turned on and is passing a signal.

Using the guidelines below, select the appropriate size of wire based on the distance from ampliﬁer to speaker.

Distance Wire Size

up to 25 ft. 16 AWG 26-40 ft. 14 AWG 41-60 ft. 12 AWG 61-100 ft. 10 AWG 101-150 ft. 8 AWG 151-250 ft. 6 AWG

CAUTION: Never use shielded cable for output wiring.

connector or banana

For additional information on audio input wiring please refer to the Crown Ampliﬁer Application Guide available online at www.crownaudio.com. It contains helpful information on preventing unwanted subsonic frequen cies, radio frequency interference, ground loops, and feedback oscillation.

When using network connections, pass the CAT 5 cable ﬁve times through a ferrite core, available from Crown Audio Inc. This is to ensure compliance with emission regulations.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Channel 1 Loudspeaker

Channel 2 Loudspeaker

Channel 1 Loudspeaker

Channel 2 Loudspeaker

Top Speakon (Channel 1)

Bottom Speakon (Channel 2)

Stereo Mode Wiring

Typical input and output wiring is shown in image below.

IMPORTANT: Turn off the ampliﬁer and unplug its power cord.

INPUTS: Choose one of these options:

• Connect analog input wiring for both channels.

• Connect an AES/EBU digital signal to the AES/EBU connector.

OUTPUTS: Maintain proper polarity (+/–) on output connectors. Use Class 2 output wiring.

The image below shows how to wire stereo speakers to the binding posts. Con nect Channel 1 loudspeaker’s

positive (+) lead to Channel 1 positive (red) terminal of amp; repeat for negative (–). Repeat Channel 2 wiring as for Channel 1.

To wire stereo speakers to the Speakon® connectors, use one of these methods:

Method 1: Wire one Speakon® cable connector to two speakers. Insert the Speakon® cable connector into the ampliﬁer’s top Speakon® connector.

Method 2: Plug the Channel 1 speaker into the Channel 1 (top) Speakon® connector, and plug the Channel 2 speaker into the Channel 2 (bottom) Speakon® connector.

Method 1

Stereo Wiring Method 1: Use Top Speakon® Only

PIN 1+ 1– 2+ 2–

CH 1+ 1– 2+ 2–

Method 2

Stereo Wiring Method 2: Use Both Speakon®s

Top Speakon

Bottom Speakon

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PIN 1+ 1–

CH 1+ 1–

Operation ManualOperation Manual

PIN 1+ 1–

CH 2+ 2–

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Bridge-Mono Mode

Overview: Turn on the amp, enable Bridge-Mono mode using the LCD Control Screen, turn off the amp, wire it, and turn it back on.

1. Be sure that no cables are connected to the ampliﬁer. Turn on the front-panel power switch. The LCD Control Screen will light up.

NOTE: In Bridge-Mono mode, the Channel 1 Level control sets the

Menu/Exit Prev Next

2. Under the LCD Control Screen, press the Menu/Exit button. Press the Next button until you see OUTPUT MODE on the screen. If N/A is displayed, OUTPUT MODE is locked via software. If LOCKOUT is displayed, all the LCD screens are locked via software.

Press an Encoder knob to select BRIDGE MONO. Press the knob again to conﬁrm your choice. Press Menu/Exit. Turn down both level controls (Encoders) until you reach maximum attenuation.

3. IMPORTANT: Turn off the ampliﬁer and unplug its power cord.

INPUTS: There are three ways to connect an input signal to the ampliﬁer:

• Connect an analog signal source to the Channel-1 ampliﬁer input.

• Connect an AES/EBU digital signal source to the Digital Input IN connector.

NOTE: Crown provides a reference of wiring pin assignments for commonly used connector types in the Crown Ampliﬁer Application Guide available at www.crownaudio.com.

OUTPUTS: Use Class 2 output wiring. There are two ways to wire the ampliﬁer output connectors for BridgeMono mode:

level; the Channel-2 Level control is defeated. All Channel-2 objects and controls are hidden and disabled.

1. Wire the speaker across the red binding post of each channel. Do not use the black binding posts when operating in Bridge-Mono mode.

2. Wire the speaker only to the top Speakon® connector as shown in the table below.

Top Speakon® Wiring for Bridge-Mono

PIN 1+ 2+

SPKR

+ –

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Operation

Protecting Your Speakers

It’s wise to avoid clipping the ampliﬁer signal. Not only does clipping sound bad, it can damage high-frequency drivers. To prevent clipping, use System Architect software’s Level Max suite to enable or display the peak voltage limiter and average power limiter in your ampliﬁer’s built-in DSP. That way, no matter how strong a signal your mixer produces, the ampliﬁer output will not clip. Set the limiter threshold so that mixer signals above 0 dB or 0 VU on the mixer meters do not quite drive the ampliﬁer into clipping.

Also, avoid sending strong subsonic signals to the ampliﬁer. High-level, low-frequency signals from breath pops or dropped micro phones can blow out drivers. To prevent subsonic signals, use one of these methods:

• Insert a highpass ﬁlter between mixer output and ampliﬁer input (or between mixer and limiter).

• Use the I-Tech’s onboard DSP to set up a highpass ﬁlters.

• Switch in highpass ﬁlters at your mixer. Set the ﬁlter to as high a fre quency as possible that does not affect

your program. For example, try 35 Hz for music and 75 Hz for speech. On each mixer input channel, set the ﬁlter frequency just below the lowest fundamental frequency of that channel’s instrument.

Startup Procedure

When ﬁrst turning on your ampliﬁer, follow the procedures in the Quick-Start Guide on page 4 (stereo) or page 5 (bridge-mono).

If you ever need to make any wiring or installation changes, don’t for get to disconnect the power cord.

For help with determining your system’s optimum gain structure (sig nal levels) please refer to the Crown Ampliﬁer Application Guide, available online at www.crownaudio.com.

Precautions

Your ampliﬁer is protected from internal and external faults, but you should still take the following precautions for optimum performance and safety:

1. Before use, your ampliﬁer ﬁrst must be conﬁgured for proper operation, including input and output wiring

hookup. Improper wiring can result in serious operating difﬁculties. For information on wiring and conﬁguration, please consult the Setup section of this manual or, for advanced setup techniques, consult Crown’s Ampliﬁer Application Guide available online at www.crownaudio.com.

2. Use care when making connections, selecting signal sources and controlling the output level. The load you

save may be your own!

3. Do not short the ground lead of an output cable to the input signal ground. This may form a ground loop and

cause oscillations.

4. WARNING: Never connect the output to a power supply, battery or power main.

Electrical shock may result.

5. Tampering with the circuitry, or making unauthorized circuit changes may be hazardous and

invalidates all agency listings.

6. Do not operate the ampliﬁer with the red Clip LEDs constantly ﬂashing.

7. Do not overdrive the mixer, which will cause clipped signal to be sent to the ampliﬁer. Such signals will be

reproduced with extreme accuracy, and loudspeaker damage may result.

8. Do not operate the ampliﬁer with less than the rated load imped ance. Due to the ampliﬁer’s output protection,

such a conﬁgura tion may result in premature clipping and speaker damage.

9. CAUTION – SHOCK HAZARD: Potentially lethal voltages exist at the output connectors when the

ampliﬁer is turned on and is passing a signal.

Remember: Crown is not liable for damage that results from overdriv ing other system components.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Front Panel Features

Power Button & Indicator:

Push-on/push-off switch glows

green when AC power is present at

the power cord and the ampliﬁer

circuit breaker is in the “on”

position.

LCD Screen:

Backlit liquid crystal display

shows enabled presets and

speaker processing.

Back Panel Features

Fans:

Provide front to back forced

airﬂow for cooling.

Output Connectors:

Binding Post Output Jacks:

One pair per channel of high-current,

60A color-coded binding posts. Accepts

banana plugs,wire of spade lugs.

4-Pole Speakon

These two connectors accept 2-pole or 4-pole Speakon

connectors. The channel 1 connector is wired for both channels

so it can be used for bridge-mode wiring or stereo wiring of two

speakers to a single Speakon.

Balanced Analog XLR Loop-Through Outputs:

Two 3-pin male XLR output connectors are provided (one per

channel). The signal at these connectors is paralleled with the

Input signal for feeding the input signal to other ampliﬁers.

Ethernet

connector is for networking.

Warning: Only connect to

networks that remain inside

Network Connector:

This EtherCon

the building.

Indicators:

Fault Indicator: Red LED, one per channel, ﬂashes when the ampliﬁer output channel has stopped operating. Usually this means that the ampliﬁer must be serviced.

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Sel/Prev/Next Buttons:

Three buttons located

underneath the LCD screen

used to access menu items

and front panel lockout.

Balanced Analog

XLR Inputs:

Provide front to back

forced airﬂow for cooling.

Gain (Level) Controls:

Two black rotary level controls,

one for each channel.

Reset Switch/

Circuit Breaker

Fans:

Provide front to back

USB 2.0 Connector:

Accepts a USB drive to transfer

presets from the drive to the

ampliﬁer DSP, and vice versa.

Cooling Vents:

Front-to-rear forced airﬂow

Thermal Indicator: Red LED, one per channel, illuminates when the channel has shut down due to thermal stress or overload.

Clip Indicator: Red LED, one per channel, illuminates whent the channel’s output signal reaches the onset of audible clipping. The Clip indicator also will illuminate

during Thermal Level Control (TLC) limiting. The Clip Indicator can be turned of during Blackout mode.

-10 dB Indicator: ampliﬁer output is 10 dB below clipping.

-20 dB Indicator: ampliﬁer output is 20 dB below clipping.

Signal Indicator: selected input signal is abouve -40 dBu.

Ready Indicator: Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output. Indicator is of f when the channel is set

to standby mode via System A rchitect or in Blackout mode.

through foam dust ﬁlter.

forced airﬂow for cooling.

AC Power

Connector

Operation ManualOperation Manual

AES/EBU Digital Input:

This 3-pin female XLR

connector accepts a digital

signal in the AES/EBU format.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Advanced Operation

Navigating the LCD Control Screen

Introduction

The LCD Control Screen and its controls let you conﬁgure the ampli ﬁer and access many features that before were available only through a remote computer. Also, you can recall DSP presets via the front panel. (Some DSP parameters cannot be adjusted with the LCD Control Screen. That is done in System Architect.)

This image shows the parts of the LCD Control Screen. Its functions are described below. NOTE: Listed functions can

also be controlled in System Architect.

Here’s how to access the various menus and settings in the LCD control screen:

Starting from the Attenuation screen, press Menu/Exit to go to the Sample Rate screen.

• Press Next to go to the next item in the menu.

• Press Prev to go to the previous item in the menu.

• Turn or press either Encoder knob to change the value of the dis played parameter.

• When you see a menu screen, push the knob once to see the items in that menu. Or press Next to go to the

next menu.

• Press Menu/Exit to leave the menu and return to the Attenuation screen at any time.

Some menu items require conﬁrmation: after you request a change, the display might say “Press and hold.” To conﬁrm a change, press and hold an Encoder knob. If you don’t want the change to occur during a conﬁrmation, turn the knob or wait ﬁve seconds.

The entire front panel or just selected screens can be locked out or set to read only status using System Architect software. Locked-out screens will either say “Lockout” or the individual parameter will say “N/A”. If a change is

attempted the screen will say “Changes Disabled”.

MENU TREE

Attenuation - Mute - Lockout

Menu button

Sample Rate

Analog Input Sensitivity Presets Amp Mode Locate

ADVANCED MENU

(press knob once to access these items:) Attenuator Limits Attenuator Link Input Sources Analog Source Select Maximum Analog Input Digital Source Select AES Source Select AES Input Trim AES Input Status Cobranet Source Select Cobranet Input Trim Bandpass Gain

Exit

Output Polarity Input Delay Speaker Delay LED Meter Display Type Bar Meter Display Type LevelMax Peak Voltage Limiter RMS Voltage Limiter Transducer Thermal Limiter Pink Noise Generator SLM (Sweep Load Monitoring) Front Panel Blackout

Sweep Load Monitoring is not available in early I-Tech HD models.

ALL MENUS: Next/Previous loops

Prev to

Cobranet Menu

Level Max Suite

MONITOR MENU

(press knob once to access these items:) Load Monitoring Thermal %

Thermal Temp deg. C AC Line Voltage Operating Time Watts Output

Exit

NETWORKING MENU

(press knob once to access these items:) Network Info Manufacturing Info HiQnet Node Address DHCP IP Address Subnet Mask

Exit

ALERT MENU

(press knob once to access these items:) Amp Output Clip Errors Analog Input Clip Errors Thermal Errors Low Limit Load Errors High Limit Load Errors SLM Errors Line Voltage Errors

Exit

Fan Errors Clear All Error Logs

COBRANET MENU

(press knob once to access these items:) Cobranet Information Ch1 Cobranet Rx Ch2 Cobranet Rx Cobranet Tx Cobranet Conductor Priority Cobranet Transport Latency

Exit

To Sample Rate

page 16

Operation ManualOperation Manual

page 17

Page 10

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Presets

Introduction

Your I-Tech HD ampliﬁer has a wide variety of onboard Digital Signal Process ing (DSP). Some applications for this DSP are speaker conﬁguration (set ting the drive levels, frequency bands, delays and limiting for your particular speakers), EQ, ﬁltering, compression, and much more. Those functions are described in Section 4.6. System Architect software lets you adjust the DSP settings, such as ﬁlter slope, compression ratio, EQ frequency bands, and so on.

A preset is a group of DSP settings that conﬁgure the amp for a speciﬁc application. For example, you might use one preset that optimizes the amp’s DSP for a JBL Vertec Line Array. You might use another preset that sets up the DSP for a stereo pair of loudspeakers of your choice. You can choose any of 50 presets with the LCD Control Screen.

Preset 1 is the factory default preset and cannot be overwritten. It sets up the ampliﬁer for stereo operation with no DSP.

The I-Tech HD ampliﬁer works with two types of presets:

1. User presets. Using System Architect, you can create your own custom DSP presets, label them, and send them to the I-Tech HD ampli ﬁer. The amp stores those presets in ﬁrmware. You can recall those presets from the LCD Control Screen.

2. Downloadable presets. Crown and JBL engineers have designed presets that are optimized for various JBL loudspeakers, such as Vertec Line Arrays. You can download presets from the I-Tech pages in the Crown website www.crownaudio.com. Then in the software, or with a USB drive, send the preset ﬁles to the I-Tech HD ampliﬁer, where you can recall them from the LCD Control Screen.

We will describe each type of preset in detail.

User Presets

User presets are DSP presets that you set up. This is the basic procedure:

1. Adjust the DSP settings as desired in the System Architect soft ware (not with the LCD Control Screen).

2. Save this group of settings as preset. Give it a label.

3. Download the preset to the I-Tech HD ampliﬁer. See the software Help ﬁle for details. As soon as you save the setting as a preset, it is sent to the ampliﬁer. Another option, described on the next page, is to transfer the preset ﬁle using a USB drive.

4. Select that preset from the LCD Control Screen. The preset will automat ically set the DSP parameters as you set them up in the control software.

Setting some parameters of the DSP in the I-Tech HD ampliﬁer is done using the control software, not by the ampliﬁer’s LCD Control Screen. For example, if you want to set ﬁlter Q, compression ratio, or graphic EQ, you would do so within the System Architect software.

5. When you want to recall the preset, select it from the Preset screen in the LCD display. The preset will

automat ically set the DSP parameters as you set them up in the control software.

Downloadable Presets

Crown and JBL engineers have designed I-Tech HD DSP presets that are opti mized for various JBL loudspeakers, such as Vertec Line Arrays. To use them, follow this procedure in System Architect:

1. Go to the I-Tech pages at www.crownaudio.com.

2. Select Downloads.

3. Click on the ﬁle of your choice. It will download to your computer.

4. In System Architect, see the Help ﬁle on Presets for details on downloading the pre set to an I-Tech HD ampliﬁer.Basically, you will open and engage a data frame. The ﬁle will overwrite the preset you designate. Another option, described on the next page, is to transfer the preset ﬁle using a USB drive.

5. Recall the preset from the LCD Control Screen. Then your amp will be conﬁgured to work with the speciﬁed loudspeaker model.

Digital Audio Options (AES/EBU)

Digital audio inputs allow you to keep the ampliﬁer input signals in the digital domain. Keeping the input signal digital reduces the number of Dig ital-to-Analog and Analog-to-Digital conversions. This provides better sound quality and reduces pickup of electrical interference.

The AES/EBU connector provides the most widely accepted format. Con nect an AES/EBU signal to the AES/EBU connector on the rear panel. If the ampliﬁer’s low-voltage power supply is lost for any reason, the AES input signal goes directly to the AES output. The ampliﬁer has a digital buffer converter so it will adapt to any AES sample rate between 32 and 96kHz that is sent to it.

Networking the Ampliﬁer

If you need help understanding network concepts, please see Appendix A on Network and CobraNet Basics. Please check the System Architect help ﬁle for directions on how to use its networking conﬁguration tools.

An I-Tech HD ampliﬁer may be used in an existing I-Tech network and can use existing I-Tech device or venue ﬁles.

You can make the following settings via the front panel or by using the Network Troubleshooter:

HiQnet node address

DHCP off/on

IP address

Subnet mask

page 18

Operation ManualOperation Manual

page 19

Page 11

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Maximum analog input

Low +21 dBu (0 dB) High +15 dBu (+6 dB)

Analog input

AES input

Source

Low +21 26/32 dB Hi +15 32/38 dB

Fixed gain

Network Troubleshooter

The network troubleshooter can assist you in setting up your HiQnet network for the ﬁrst time. Using the troubleshooter, you can address your components and be informed of addressing and other errors in the system. Please note that this wizard is designed to work with devices that are on the same physical network segment as the computer it is running on. It will not work through a router.

Select Network Card

The ﬁrst page of the wizard lists all the network adapters currently in the computer. If you have more than one adapter, you can scroll through the list and see the IP Address assigned to each card.

If you have a card with an IP address of 0.0.0.0, it typically means one of several things:

1. The card is disabled.

2. The card is not connected to a network.

3. The card is setup to obtain its address from a DHCP server, and no DHCP server is available.

Select the card that is connected to the HiQnet system and click the Next button. The Wizard will walk you through the rest of the process. Please see the System Architect online help for more information.

Software-Controllable Onboard DSP

Crown’s latest-generation Digital Signal Processing is built into the I-Tech HD ampliﬁer. Its 24-bit/96kHz converters offer extremely low noise and extended dynamic range. When you use an I-Tech HD amp, the loud speaker processors, crossovers, limiters and delays are in the onboard DSP – so you don’t need those rackmounted devices. This drastically cuts setup time, commissioning, rack space and costs.

Fixed-Gain mode in the I-Tech HD

Fixed-gain mode makes any I-Tech HD model have the same gain, regardless of output power.

To do that, ﬁxed-gain mode sets the Analog Input Sensitivity to 0 dB gain, then adjusts the Fixed Gain Compensation fader, and the Maximum Analog Input, to achieve 26 or 32 dB of gain (if the Maximum Analog Input is set Low), or to achieve 32 or 38 dB of gain (if the Maximum Analog Input is set High), no matter what model the ampliﬁer is.

However, In ﬁxed-gain mode, the input trims (Analog, AES, CobraNet) can still be adjusted.

Cobranet input

AES input trim

Cobranet input trim

Analog input sensitivity

select

Output attenuator

Fixed gain compensation

Limiters

Amplifier

The I-Tech HD’s DSP can be monitored and controlled with a computer running System Architect software, and connected to the ampliﬁer Network Connector by a network Category 5 cable.

Some applications for this DSP are:

• Set up signal ﬂow

• Optimize system gain structure

• Set up speaker conﬁgurations (set the drive levels, frequency bands, delays and limiting for

your particular speakers)

• Set up EQ, ﬁltering, compression, and much more.

page 20

Operation ManualOperation Manual

page 21

Page 12

Troubleshooting

“Off/Flashing/On” means that the LED can be off, or ﬂashing, or on.

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

CONDITION: Thermal indicator is on.

POSSIBLE REASON:

• The amplier is becoming too hot for safe

operation. Allow ampliﬁer to cool. Check for loads less than 2 ohms, and for excessive input levels. Check for proper ventilation.

CONDITION: Power indicator is off and power switch is not illuminated.

POSSIBLE REASON:

• The amplier has lost AC power.

• The amplier is not plugged into the

power receptacle.

• Rear-panel breaker is off.

CONDITION: Power indicator is off and power switch is illuminated.

POSSIBLE REASON:

• The amplier’s power switch is off.

CONDITION: Power indicator is ﬂashing.

POSSIBLE REASON

• The AC line voltage has dropped below

15% or has risen above 15% of the rated range.

CONDITION: Fault indicator is ﬂashing.

POSSIBLE REASON:

• The amplier channel has stopped

operating. Refer the unit to an authorized Crown Service Center.

CONDITION: Power indicator is off and power switch is not illuminated.

POSSIBLE REASON:

• Load is wired incorrectly or Output Mode

switch in LCD-screen menu is set incorrectly. Check both.

• Input is overloaded by a signal level that

is too high. Turn down your ampliﬁer level controls (Encoders), or turn down the input signal, until the clip light goes out.

Note: If the signal sounds distorted even though the Clip LED is off, the input signal may be distorted before it reaches the ampliﬁer input. Check gain staging and output levels of the mixer or preamp.

page 22

Operation ManualOperation Manual

page 23

Page 13

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

CONDITION: No sound, even though the amp has power. Power LED is on with-

out ﬂashing and the amp is receiving an input sig nal. Signal indicator is on or ﬂashing.

POSSIBLE REASON

• Speakers not connected.

• Open circuit due to speaker failure.

• There is a short on the amplier output. First

disconnect your speakers from the affected channel(s) one by one to determine if one of the loads is shorted.

• Ready LED is off. Channel has been set to

standby mode via the software.

• Amplier is in blackout mode. Press or

turn an Encoder to reactivate the LCD display.

CONDITION: No input signal. Signal indicator is not ﬂashing even though audio is applied, and the channel is ready.

POSSIBLE REASON

• Input signal level is very low.

• Another source is selected or routed.

CONDITION: Data indicator not ash

ing, even though host computer software is active.

POSSIBLE REASON:

• Cable between computer and amplier is bro ken

or not connected.

Note: Data indicator ﬂashes only when the ampliﬁer is polled for data, or is polled to see whether it is online.

CONDITION: Yellow LINK ACTIVITY indicator in

Ethernet connector does not illuminate or ash.

POSSIBLE REASON:

• Ethernet link is broken.

CONDITION: COND indicator is off.

POSSIBLE REASON:

• There is only one conductor allowed per network system. This

indicator is lit only when the ampliﬁer is the conductor.

• Amplier is in blackout mode. Press or turn an Encoder to

reactivate the LCD display.

page 24

CONDITION: Computer does not communicate with the network devices.

POSSIBLE REASON:

• Incorrect wiring. See Section 3.5 letter O on network wiring.

• IP Addressing is not done correctly. Use the Network Troubleshooting

Wizard in System Architect.

Operation ManualOperation Manual

page 25

Page 14

Specications

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

3500W

4000W

2100W

7000W

8000W

2500W

3000W

1500W

5000W

6000W

1800W

2000W

1250W

3600W

4000W

1.28V to 8V

Adjustable in 0.1V steps from

1.28V to 8V

Adjustable in 0.1V steps from

1.28V to 8V

Adjustable in 0.1V steps from

37.1 dB to 22.2 dB 37.9 dB to 23.0 dB 40.1 dB to 24.5 dB

setting of maximum input level

+15 dBu or +21 dBu, depending on

setting of maximum input level

+15 dBu or +21 dBu, depending on

< 0.35% < 0.35% < 0.35%

setting of maximum input level

AES/EBU, 24-bit, 32-96 kHz.

Onboard sample rate converter.

AES/EBU, 24-bit, 32-96 kHz.

Onboard sample rate converter.

point DSP processing

24-bit conversion with 32-bit, ﬂoating-

with standard 100Mb Ethernet hardware

Onboard HiQnet and TCP/IQ, compatible

Speed-sensitive rotary encoders, 0.5 dB

point DSP processing

24-bit conversion with 32-bit, ﬂoating-

with standard 100Mb Ethernet hardware

Onboard HiQnet and TCP/IQ, compatible

Speed-sensitive rotary encoders, 0.5 dB

point DSP processing

Onboard sample rate converter.

steps, range 0 to –100 dB

steps, range 0 to –100 dB.

with standard 100Mb Ethernet hardware

unbalanced

1-2-4-8-16 ohms

20 kilohms balanced, 10 kilohms

277VAC.

2-4-8 ohms

50/60 Hz. Max. AC mains voltage

Universal AC input, 100-240VAC (±15%),

unbalanced

1-2-4-8-16 ohms

20 kilohms balanced, 10 kilohms

277VAC.

2-4-8 ohms

50/60 Hz. Max. AC mains voltage

Universal AC input, 100-240VAC (±15%),

2-4-8 ohms

277VAC.

unbalanced

1-2-4-8-16 ohms

50/60 Hz. Max. AC mains voltage

to back

continuously variable speed fans

Flow-through ventilation from front

Dual-zone, microprocessor controlled,

EIA Standard 19-inch rack mount width

(EIA RS-310B), 3.5-inch (8.9-cm) height,

to back

continuously variable speed fans

Flow-through ventilation from front

Dual-zone, microprocessor controlled,

EIA Standard 19-inch rack mount width

(EIA RS-310B), 3.5-inch (8.9-cm) height,

to back

continuously variable speed fans

(EIA RS-310B), 3.5-inch (8.9-cm) height,

mounting surface

28 pounds (12.7 kg)

36 pounds (16.3 kg)

16.2-inch (41.1-cm) depth behind front

mounting surface

28 pounds (12.7 kg)

36 pounds (16.3 kg)

16.2-inch (41.1-cm) depth behind front

mounting surface

28 pounds (12.7 kg)

36 pounds (16.3 kg)

16.2-inch (41.1-cm) depth behind front

page 26

Minimum Guaranteed Power I-T5000HD I-T9000HD I-T12000HD

20 Hz - 20 kHz with 0.35% THD

Stereo, 2 ohms (per ch.)

Stereo, 4 ohms (per ch.)

Stereo, 8 ohms (per ch.)

Bridge mono, 4 ohms

Bridge mono, 8 ohms

Input Sensitivity (volts RMS) for rated output

Voltage Gain for full rated power at 8 ohms

Frequency Response (at 1 watt, 20Hz - 20 kHz) ± 0.25 dB ± 0.25 dB ± 0.25 dB

Signal to Noise Ratio below rated full-bandwidth power, A-weighted > 108 dB > 108 dB > 108 dB

Performance I-T5000HD I-T9000HD I-T12000HD

Total Harmonic Distortion (THD) at full rated power at 1 kHz < 0.1% < 0.1% < 0.1%

Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,

from full rated output to –35 dB

Maximum Input Level +15 dBu or +21 dBu, depending on

Latency 1.16 mS at 48 kHz, 529 µS at 96 kHz 1.16 mS at 48 kHz, 529 µS at 96 kHz 1.16 mS at 48 kHz, 529 µS at 96 kHz

A/D, D/A Converters 24-bit 96 kHz Cirrus Logic 24-bit 96 kHz Cirrus Logic 24-bit 96 kHz Cirrus Logic

DSP 24-bit conversion with 32-bit, ﬂoating-

Network Onboard HiQnet and TCP/IQ, compatible

Digital Input AES/EBU, 24-bit, 32-96 kHz.

Attenuators Speed-sensitive rotary encoders, 0.5 dB

Weight

Net

Cooling Dual-zone, microprocessor controlled,

Performance I-T5000HD I-T9000HD I-T12000HD

Damping Factor (8 ohms): 20 Hz to 100 Hz > 5000 > 5000 > 5000

Crosstalk (below rated power, 20 Hz to 1 kHz) > 80 dB > 80 dB > 80 dB

Common Mode Rejection (CMR) (20 Hz to 1 kHz) > 55 dB, typically > 70 dB > 55 dB, typically > 70 dB > 55 dB, typically > 70 dB

DC Output Offset (Shorted input) < ± 3 mV < ± 3 mV < ± 3 mV

Input Impedance (nominal) 20 kilohms balanced, 10 kilohms

Load Impedance (Note: Safe with all types of loads)

Stereo

Bridge Mono

Required AC Mains Universal AC input, 100-240VAC (±15%),

Ventilation Flow-through ventilation from front

AC Line Connector USA, UK, European, Australia, India USA, UK, European, Australia, India USA, UK, European, Australia, India

Construction I-T5000HD I-T9000HD I-T12000HD

Dimensions EIA Standard 19-inch rack mount width

Operation ManualOperation Manual

Shipping

page 27

Page 15

Charts

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Typical Frequency Response (1W)

page 28

Typical Crosstalk vs. Frequency

Typical Damping Factor vs. Frequency

Operation ManualOperation Manual

page 29

Page 16

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

AC Power Draw and thermal Dissipation

376

4108.0 476

709

Thermal Dissipation

Watts

Per 1A

Amp Line

Watts Out

Line Current

Per 1A

Amp Line

Watts Out

I-T5000HD

Watts Out

120VAC 208VAC 230VAC

Line Current

Per 1A

Amp Line

Line Current

Btu/hr kcal/hr

Dissipated

Current

230VAC

Current

208VAC

Current

120VAC

1040 262

305

102.6

3.1

3.4

5.3 94.659.6

1413 356

4.4

106.9

4.7 414

64.9 116.3

7.8

1625

106.0

4.4

96.1

4.8

58.1

1491

437

139.9

6.0

126.2

6.6

77.1

10.9

2426 612

142.1

9.5

129.1

10.5

77.0

17.8 711

2814

9.4

10.7

70.3

17.7 115.3 128.7 824

Watts Out

Watts

Per 1A

Amp Line

Line Current

Per 1A

Amp Line

Line Current

Per 1A

Amp Line

Line Current

Btu/hr kcal/hr

Dissipated

Current

230VAC

Current

208VAC

Current

120VAC

6.6 4.2 3.857.6 91.2 99.8 392 1338 337

593 2024 510

11.6 7.0 6.365.7 108.8 120.4

695

11.5 6.8 6.255.9 96.5 105.3 2373 598

579 1977 498

13.6 8.1 7.474.4 125.3 137.2

1149 3921 988

14.9 13.667.0 113.5 4173 105225.0 1223124.3

27.6 16.0 14.373.9 127.2 141.0

Thermal Dissipation

I-T9000HD

120VAC 208VAC 230VAC

page 30

Load

8 Ohms Bridge

2 Ohms/Ch.

4 Ohms Bridge

Typical of program material 16 Ohms Bridge

Idle (awake) 1.6 1.4 1.3 172 587 505

1/8th Power Pink Noise 8 Ohms/Ch.

just at clip. 4 Ohms/Ch.

I-Tech 5000HD AC Current Draw and Thermal Dissipation:

Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.

Typical line impedance used.

Data based on both channels driven.

Idle (sleep mode) 0.8 0.95 0.9 53 182 157

8 Ohms Bridge

Typical of program material 16 Ohms Bridge

with severe clipping. 4 Ohms/Ch.

1/3rd Power Pink Noise 8 Ohms/Ch.

2 Ohms/Ch.

4 Ohms Bridge

Load

8 Ohms Bridge

2 Ohms/Ch.

4 Ohms Bridge

Typical of program material 16 Ohms Bridge

Idle (awake) 2.1 1.7 1.6 225 767 660

1/8th Power Pink Noise 8 Ohms/Ch.

just at clip. 4 Ohms/Ch.

I-Tech 9000HD AC Current Draw and Thermal Dissipation:

Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.

Typical line impedance used.

Data based on both channels driven.

Idle (sleep mode) 1.0 1.0 0.95 60 205 177

Operation ManualOperation Manual

8 Ohms Bridge

Typical of program material 16 Ohms Bridge

with severe clipping. 4 Ohms/Ch.

1/3rd Power Pink Noise 8 Ohms/Ch.

2 Ohms/Ch.

4 Ohms Bridge

page 31

Page 17

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Advanced Featured

Protection System

Your Crown ampliﬁer provides extensive pro tection and diagnostic capabilities, including thermal level control, fault indicators, high-pass ﬁltering, DC protect, AC under/over volt age protection, inrush limiting, and variablespeed fans with tachometer feedback. Microprocessor monitors fans, and signals an error via System Architect if fans are not operating.

Thermal Dissipation

Btu/hr kcal/hr

Thermal Level Control (TLC)

701

Watts

Dissapited

441 1504 3798.3 63.6 103.35.1 4.7

1370 4677 1179

1589 5425 1368118.0 131.117.9

If the ampliﬁer becomes too hot for safe opera tion, the TLC will engage the input compressor and the clip LED will illuminate. By compress ing the input, the ampliﬁer will not generate as much heat and will have a chance to cool down. The degree of compression is proportional to the amount of overheating. This feature allows the show to go on, rather than having the ampliﬁer shut down, and only occurs in extreme situations.

Per 1A

Current

Amp Line

Watts Out

230VAC

Line Current

Per 1A

Current

Amp Line

Watts Out

Line Current

Per 1A

Amp Line

Line Current

208VAC

Current

120VAC

Load

I-T12000HD

120VAC 208VAC

111.8

124.5

113.6

8.0

7.7

115.2

106.1

8.2

8.7

62.9

14.6 68.8 2394 603

14.2 764 2607 657

8 Ohms Bridge

2 Ohms/Ch.

4 Ohms Bridge

142.0

9.9

128.3

11.0

77.4

18.1 715 2439 615

144.2

18.7

128.6

20.8

19.9

76.3

69.2

33.9

35.1

8 Ohms Bridge

2 Ohms/Ch.

4 Ohms Bridge

Circuit Breaker

If the current draw of the ampliﬁer exceeds safe limits, this breaker automatically disconnects the power supply from the AC mains.

Global Switching Power Supply with PFC

Thanks to its global power supply, the I-Tech ampliﬁer works anywhere in the world. There’s no need to reset an AC mains voltage switch, and no need to order a special model. The amp will work and meet all specs on 100V 240VAC, 50/60 Hz.

Crown’s Switching Power Supply minimizes the ampliﬁer’s weight.

Typical non-switching power supplies require large, heavy transformers in order to produce the required power at the output stage. These transformers must be large to operate at 50 to 60 Hz (standard AC supplied by the power company).

By contrast, switching power supplies can operate with a much smaller (and lighter) trans former because they ﬁrst convert the AC up to a much higher frequency, thereby reducing waste.

Power Factor Correction (PFC) controls how your ampliﬁer draws current from the AC mains. Instead of drawing high-magnitude cur rent spikes that reduce the capacity of your power distro (and couple noise into other sys tem components), PFC draws a smooth and quiet current waveform that is in phase with the mains voltage waveform. PFC allows you to reduce the size and weight of your power distri bution and improve the performance of your signal processors.

Color-Coded Overlay

The labels on the rear panel are color coded to group similar functions under common colors.

page 32

Typical of program material 16 Ohms Bridge

Idle (awake) 2.0 1.8 1.6 213 726 625

1/8th Power Pink Noise 8 Ohms/Ch.

just at clip. 4 Ohms/Ch.

I-Tech 12000HD AC Current Draw and Thermal Dissipation:

Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.

Typical line impedance used.

Data based on both channels driven.

Idle (sleep mode) 0.9 1.1 1.0 62 212 183

Typical of program material 16 Ohms Bridge

with severe clipping. 4 Ohms/Ch.

1/3rd Power Pink Noise 8 Ohms/Ch.

Operation ManualOperation Manual

page 33

Page 18

I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Setting Sensitivity for Best Gain Staging

Optimized system gain structure maximizes signal to noise within the sys tem. Adjusting your ampliﬁer to ﬁt within an optimized system gain struc ture is accomplished by properly setting both the sensitivity and attenuation controls within the ampliﬁer. I-Tech ampliﬁers offer 149 sensi tivity and gain settings allowing very ﬁne adjustment of the ampliﬁer’s gain and voltage sensitivity. The Appendix section of the I-Tech Application guide (online at www.crownaudio.com) provides charts with sensitivity in volts and gain in dB for each sensitivity/gain setting.

With other ampliﬁers, it is often necessary to apply attenuation in order to achieve the desired sound pressure level. Large amounts of attenuation are not necessary with I-Tech ampliﬁers and can, in fact, degrade performance. The attenuation adjustment should only be used for small (3 dB) or tempo rary adjustments in ampliﬁer gain. Instead, set the sensitivity/gain of your I-Tech ampliﬁer so that you can achieve the desired output with the attenu ators at or near 0 dB.

Example: Suppose that you are using an I-T9000HD with the sensitivity/gain set at 1.4V/37.1 dB. After optimizing the gain structure of the rest of your system you ﬁnd that attenuating the ampliﬁer by 10 dB produces the desired loudness. The same output level, with improved signal-to-noise ratio and headroom, can be achieved by using 0 dB of attenuation and by setting the ampliﬁer sensitivity/gain to 5.81V/27.0 dB (37 dB – 10 dB = 27 dB).

Note: as indicated in the online appendix, the list of possible sensitivity settings is different for each position of the max input setting. If, while adjusting sensitivity/gain in your ampliﬁer, you do not ﬁnd the setting you need, try changing the status of the max input setting and search again.

Service

Crown ampliﬁers are quality units that rarely require ser vicing. Before returning your unit for service, please contact Crown Technical Support to verify the need for servicing.

This unit has very sophisticated circuitry which should only be serviced by a fully trained technician. This is one reason why each unit bears the following label:

CAUTION: To prevent electric shock, do not remove covers. No user serviceable parts inside. Refer servicing to a qualiﬁed technician.

Complete the Crown Audio Factory Service Information form, in the back of this manual, when returning a Crown product to the factory or authorized service center. The form must be included with your product inside the box or in a packing slip envelope securely attached to the outside of the shipping carton. Do not send this form separately.

Warranty is only valid within the country in which the product was purchased.

International and Canada Service

Service may be obtained from an authorized service cen ter. (Contact your local Crown/Amcron representative or our ofﬁce for a list of authorized service centers.) To obtain service, simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center. They will handle the necessary paperwork and repair.

Remember to transport your unit in the original factory pack.

US Service

Service may be obtained in one of two ways: from an authorized service center or from the factory. You may choose either. It is important that you have your copy of the bill of sale as your proof of purchase.

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Service at a US Service Center

This method usually saves the most time and effort. Sim ply present your bill of sale along with the defective unit to an authorized service center to obtain service. They will handle the necessary paperwork and repair. Remem ber to transport the unit in the original factory pack. A list of authorized service centers in your area can be obtained from Crown Factory Service, or online from http://www.crownaudio.com/support/servcent.htm.

Factory Service

Crown accepts no responsibility for non-serviceable product that is sent to us for factory repair. It is the owner’s responsibility to ensure that their product is ser viceable prior to sending it to the factory. Serviceable product list is available at http://crownweb.crownintl.com/crownrma/. For more information, please contact us direct.

A Service Return Authorization (SRA) is required for product being sent to the factory for repair. An SRA can be completed online at www.crownaudio.com/support/factserv.htm. If you do not have access to the web, please call Crown’s Customer Service at 574.294.8200 or 800.342.6939 extension 8205.

For warranty service, we will pay for ground shipping both ways in the United States. Contact Crown Customer Service to obtain prepaid shipping labels prior to send ing the unit.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Or, if you prefer, you may prepay the cost of shipping, and Crown will reimburse you. Send copies of the shipping receipts to Crown to receive reimbursement. Your repaired unit will be returned via UPS ground. Please contact us if other arrangements are required.

Factory Service Shipping Instructions:

1. Service Return Authorization (SRA) is required for product being sent to the factory for service. Please complete the SRA by going to www.crownaudio.com/support/factserv.htm. If you do not have access to our website, call 1.800.342.6939, extension 8205 and we’ll create the SRA for you.

2. See packing instructions that follow.

3. Ship product to: CROWN AUDIO FACTORY SERVICE 1718 W MISHAWKA RD. ELKHART, IN 46517

4. Use a bold black marker and write the SRA number on three sides of the box.

5. Record the SRA number for future reference. The SRA number can be used to check the repair status.

Packing Instructions

Important: These instructions must be followed. If they are not followed, Crown Audio, Inc. assumes no responsibility for damaged goods and/or accessories that are sent with your unit.

1. Fill out and include the Crown Audio Factory Ser vice Information sheet in the back of this manual.

2. Do not ship any accessories (manuals, cords, hard ware, etc.) with your unit. These items are not needed to

service your product. We will not be responsibility for these items.

3. When shipping your Crown product, it is important that it has adequate protection. We recommend you use the

original pack material when returning the product for repair. If you do not have the original box, please call Crown at 800.342.6939 or 574.294.8210 and order new pack material. See instructions for “foam-in-place” shipping pack. (Do not ship your unit in a wood or metal cabinet.)

4. If you provide your own shipping pack, the mini mum recommended requirements for materials are as follows:

a. 275 P.S.I. burst test, Double-Wall carton that allows for 2-inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit.

b. Securely seal the package with an adequate carton sealing tape.

c. Do not use light boxes or “peanuts”. Damage caused by poor packaging will not be covered under war ranty.

Using your ‘foam-in-place’ shipping pack

Note: The foam-in-place packing is molded so that there is only one correct position for your product.

Estimate Approval

Approval of estimate must be given within 30 days after being notiﬁed by Crown Audio Inc. Units still in the possession of Crown after 30 days of the estimate will become the property of Crown Audio Inc.

Payment of Non-Warranty Repairs

Payment on out-of-waranty repairs must be received within 30 days of the repair date. Units unclaimed after 30 days become the property of Crown Audio Inc.

If you have any questions, please contact Crown Factory Service.

Crown Factory Service

1718 W. Mishawaka Rd., Elkhart, Indiana 46517 U.S.A.

Telephone:

574.294.8200

800.342.6939 (North America, Puerto Rico, and Virgin Islands only)

Facsimile:

574.294.8301 (Technical Support)

574.294.8124 (Factory Service)

Internet:

http://www.crownaudio.com

1. Open carton and lift center cushion leaving both end-cushions in place.

2. Carefully place your product with the product’s front panel facing the same direction as arrows indicate.

3. Reset center cushion down over top of product’s chassis. The foam-in-place packing was molded to

accommodate different chassis depth sizes. If your product’s chassis does not completely ﬁll the foam-in-place cavity, you may use a soft but solid packing material (such as paper or bubble wrap) behind the chassis.

4. Enclose the completed Crown Audio Factory Service Information form (or securely attach it to the outside of

carton) and re-seal the shipping pack with a sturdy carton sealing tape.

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I-Tech HD Series Power Ampliﬁers I-Tech HD Series Power Ampliﬁers

Warranty — UNITED STATES & CANADA

SUMMARY OF WARRANTY

Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-40 95 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown product, for a period of ﬁve (5) years from the date of purchase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship. We further warrant the new Crown product regardless of the reason for failure, except as excluded in this War ranty.

Warranty is only valid within the country in which the product was purchased.

ITEMS EXCLUDED FROM THIS CROWN WARRANT Y

This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warrant y Period. It does not cover any product which has been damaged because of any inten tional misuse, accident, negligence, or loss which is covered under any of your insurance contracts. This Crown Warranty also does not extend to the new Crown product if the serial number has been defaced, altered, or removed.

WHAT THE WARRANTOR WILL DO

We will remedy any defect, regardless of the rea son for failure (except as excluded), by repair, replacement, or refund. We may not elect refund unless you agree, or unless we are unable to pro vide replacement, and repair is not practical or cannot be timely made. If a refund is elected, then you must make the defective or malfunctioning product available to us free and clear of all liens or other encumbrance s. The refund will be equal to the actual purchase price, not including inter est, insurance, closing costs, and other ﬁnanc e charges less a reasonable depreciation on the product from the date of original purchase. War ranty work can only be per formed at our autho rized service centers or at the factory. Warranty work for some products can only be performed at our factory. We will remedy the defect and ship the product from the ser vice center or our factory within a re asonable time after receipt of the defec tive product at our authorized ser vice center or our factory. All expenses in remedying the defect, including surface shipping costs in the United States, will be borne by us. (You must bear the expense of shipping the product bet ween any for eign country and the port of entry in the United States including the return shipment, and all t axes, duties, and other customs fees for such for eign shipments.)

HOW TO OBTAIN WARRANTY SERVICE

You must notify us of your need for warranty ser vice within the warrant y period. All components must be shipped in a factory pack, which, if needed, may be obtained from us free of charge. Corrective action will be taken within a reasonable time of the date of receipt of the defective product by us or our authorized service center. If the repairs made by us or our authorized service center are not satisfactor y, notif y us or our autho rized service center immediately.

DISCLAIMER OF CONSEQUENTIA L AND INCIDENTAL DAMAGES

YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NE W CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULT ING FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE E XCLUSION OR LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAM AGES, SO T HE ABOVE LIMITATION OR EXCLU SION MAY NOT APPLY TO YOU.

WARRANTY ALTERATIONS

No person has the authority to enlarge, amend, or modify this Crown Warranty. This Crown War ranty is not extended by the length of time which you are deprived of the use of the new Crown product. Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warrant y.

DESIGN CHANGES

We reserve the right to change the de sign of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured.

LEGAL REMEDIES OF PURCHASER

THIS CROWN WARRANT Y GIVES YOU SPECIFIC LEGAL RIGHTS, YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE. No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period.

THIS STATEMEN T OF WARRA NT Y SUPERSEDES A NY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS. 5/11

Warranty — WORLDWIDE EXCEPT USA & CANADA

SUMMARY OF WARRANTY

Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-40 95 U.S.A. warrants to you, the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown1 product, for a period of ﬁve (5) years from the date of pur chase by the original purchaser (the “warranty period”) that the new Crown product is free of defects in materials and workmanship, and we further warrant the new Crown product regardless of the reason for failure, except as excluded in this Warranty.

Warranty is only valid within the country in which the product is purchased.

Note: If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this warranty.

ITEMS EXCLUDED FROM THIS CROWN WA RRANTY

WHAT THE WARRANTOR WILL DO

HOW TO OBTAIN WARRANTY SERVICE

You must notify your local Crown importer of your need for warranty service within the warranty period. All components must be shipped in the original box. Corrective action will be taken within a reasonable time of the date of receipt of the defective product by our authorized service center. If the repairs made by our authorized service cen ter are not s atisfactory, notify our authorized ser vice center immediately.

DISCLAIMER OF CONSEQUENTIA L AND INCIDENTAL DAMAGES

WARRANTY ALTERATIONS

No person has the authority to enlarge, amend, or modify this Crown Warranty. This Crown Warranty is not extended by the length of time which you are deprived of the use of the new Crown product. Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warrant y.

DESIGN CHANGES

We reserve the right to change the de sign of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured.

LEGAL REMEDIES OF PURCHASER

No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period.

THIS STATEMEN T OF WARRA NT Y SUPERSEDES A NY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS. 5/11

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Crown I-Tech HD User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual