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

I-Tech HD Series Operation Manual
Models: I-T5000 HD, I-T9000 HD, I-T2000 HD
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.
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, and Amcron are registered trademarks of Crown
International. Other trademarks are the property of their respective owners. Later versions
of this manual and additional information about this product may be available at the Crown
website at www.crownaudio.com.
Some models may be exported under the name Amcron®
©2011 by Crown Audio ®, Inc., 1718 W. Mishawaka Rd., Elkhart, Indiana 46517-9439 U.S.A.
Telephone: 574-294-8000.
5009241 - 11/11
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Important Safety Instructions
1. Read these instructions.
4. Follow all instructions.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE
POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE. THE MAINS PLUG OF THE POWER
SUPPLY CORD SHALL REMAIN READILY OPERABLE.
5. Do not use this apparatus near water.
WATCH FOR THESE SYMBOLS:
2. Keep these instructions.
3. Heed all warnings.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers)
that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider
than the other. A grounding-type plug 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 replacement of the
obsolete outlet.
10. Protect the power cord from being walked on or pinched,
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with a cart, stand, tripod, bracket, or
table specified by the manufacturer, or sold with
the apparatus. When a cart is used, use caution
when moving the cart/apparatus combination to
avoid injury from tip-over.
13.Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged 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 moisture, does not
operate normally, or has been dropped.
15.Use the mains plug to disconnect the apparatus from the mains.
16. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR
MOISTURE.
17. DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING
OR SPLASHING AND ENSURE THAT NO OBJECTS
FILLED WITH LIQUIDS, SUCH AS VASES, ARE
PLACED ON THE EQUIPMENT.
18.THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL
REMAIN READILY OPERABLE.
TO PREVENT ELECTRIC SHOCK DO NOT REMOVE
TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning bolt triangle is used to alert the user to
the risk of electric shock.
The exclamation point triangle is used to alert the
user to important operating or maintenance instructions.
Issued By: H
arman International.
1718 W. Mishawaka Rd.
Elkhart, IN 46517 U.S.A.
FOR COMPLIANCE
QUESTIONS ONLY:
Sue Whitfield
574-294-8289
[email protected]
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
IMPORTANT
XLS Series amplifiers require Class 2 output wiring.
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 just above and below the unit.
If an equipment rack is used, we recommend locating the
amplifier(s) in the bottom of the rack and the preamplifier or
other sensitive equipment at the top.
FCC COMPLIANCE NOTICE
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:
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
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
Date of Issue: November 1, 2008
• 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.
page 2
DECLARATION OF CONFORMITY
Operation Manual
Due to line current harmonics, we recommend that you contact your supply authority before connection.
Operation Manual
page 3
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Get Started
Setup
Welcome
Unpack and Install Your Amplifier
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.
When Please unpack and inspect your amplifier for any damage that may have occurred during transit. If damage
is found, notify the transpor­tation company immediately. Only you can ini­tiate 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.
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.
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):
In addition, I-Tech Series amplifiers include a number of features which require some expla­nation before they can
be used to their maxi­mum 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 Fac­tor 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®) cir­cuitry 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 down­loaded.
7.
AES/EBU digital audio input.
8.
EtherCon® Ethernet con­nector 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.
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 Instruc­tions 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 (counterclock­wise).
Use a standard 19-inch (48.3 cm) equipment rack
(EIA RS-310B).
You may also stack amps without using a
cabinet.
3.5 In.
8.9 cm
19 In.
48.3 cm
1.5 In.
3.8 cm
NOTE: When transporting, amplifiers should be
supported at both front and back.
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.
16.2 In.
41.1 cm
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.
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).
14. Light weight due to aluminum chassis, spe­cial internal construction and switching power supply.
15. Thermal management controller and two dis­crete thermal zones with variable-speed fans,
forced-air cooling.
16. Advanced protection circuitry guards against: shorted outputs, DC, mismatched loads, general overheating, under/over volt­age, high-frequency overloads and internal faults.
17. Three-Year, No-Fault, Fully Transferable Warranty completely protects your investment and guarantees its
specifications.
page 4
Operation Manual
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.
Operation Manual
page 5
I-Tech HD Series Power Amplifiers
Connecting to AC Mains
I-Tech HD Series Power Amplifiers
Choose Input Wire and Connectors
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
Slot
the clip and insert them into the slots.
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.
Crown recommends using pre-built or professionally wired, bal­anced 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 per­sonnel.
Choose Output Wire and Connectors
Slot
IEC Power Connector
Clip
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® connector or banana
plugs, spade lugs, or bare wire­for 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.
Wire Inputs and Outputs
Wiring basics
Using the guidelines below, select the appropriate size of wire based on the distance from amplifier to speaker.
• Always use shielded wire for input wiring. The higher the density of the shield (the
outer conductor) the better. Spiral wrapped shield is not recom­mended.
Distance
• 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 compo­nent is over driven.
up to 25 ft.
26-40 ft.
41-60 ft.
61-100 ft.
101-150 ft.
151-250 ft.
Wire Size
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
CAUTION: Never use shielded
cable for output wiring.
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.
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 frequen­cies, 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.
page 6
Operation Manual
Operation Manual
page 7
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Stereo Mode Wiring
To wire stereo speakers to the Speakon® connectors, use one of these methods:
Typical input and output wiring is shown in image below.
Method 1: Wire one Speakon® cable connector to two speakers. Insert the Speakon® cable connector into the
amplifier’s top Speakon® connector.
IMPORTANT: Turn off the amplifier and unplug its power cord.
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.
INPUTS: Choose one of these options:
• Connect analog input wiring for both channels.
• Connect an AES/EBU digital signal to the AES/EBU connector.
Method 1
OUTPUTS: Maintain proper polarity (+/–) on output connectors. Use Class 2 output wiring.
Stereo Wiring Method 1: Use Top Speakon® Only
The image below shows how to wire stereo speakers to the binding posts. Con­nect 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.
PIN
1+
1–
2+
2–
CH
1+
1–
2+
2–
Channel 1
Loudspeaker
Channel 2
Loudspeaker
Method 2
Stereo Wiring Method 2: Use Both Speakon®s
Bottom Speakon
Top Speakon
PIN
1+
1–
PIN
1+
1–
CH
1+
1–
CH
2+
2–
Top Speakon
(Channel 1)
Channel 1
Loudspeaker
Bottom
Speakon
(Channel 2)
Channel 2
Loudspeaker
page 8
Operation Manual
Operation Manual
page 9
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Bridge-Mono Mode
1.
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.
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.
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.
Menu/Exit
2.
Prev
Next
NOTE: In Bridge-Mono mode, the
Channel 1 Level control sets the
level; the Channel-2 Level control is
defeated. All Channel-2 objects and
controls are hidden and disabled.
Top Speakon® Wiring for Bridge-Mono
PIN
1+
2+
SPKR
+
–
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:
page 10
Operation Manual
Operation Manual
page 11
I-Tech HD Series Power Amplifiers
Operation
I-Tech HD Series Power Amplifiers
Precautions
Your amplifier is protected from internal and external faults, but you should still take the following
precautions for optimum performance and safety:
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 micro­phones 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 fre­quency 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.
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.
Startup Procedure
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.
When first turning on your amplifier, follow the procedures in the Quick-Start Guide on page 4 (stereo) or page 5
(bridge-mono).
8. Do not operate the amplifier with less than the rated load imped­ance. Due to the amplifier’s output protection,
such a configura­tion may result in premature clipping and speaker damage.
If you ever need to make any wiring or installation changes, don’t for­get to disconnect the power
cord.
9. CAUTION – SHOCK HAZARD: Potentially lethal voltages exist at the output connectors when the
amplifier is turned on and is passing a signal.
For help with determining your system’s optimum gain structure (sig­nal levels) please refer to the
Crown Amplifier Application Guide, available online at www.crownaudio.com.
Remember: Crown is not liable for damage that results from overdriv­ing other system components.
page 12
Operation Manual
Operation Manual
page 13
page 14
Operation Manual
AC Power
Connector
Operation Manual
Reset Switch/
Circuit Breaker
Provide front to back
forced airflow for cooling.
This 3-pin female XLR
connector accepts a digital
signal in the AES/EBU format.
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.
4-Pole Speakon® Output Connectors:
Provide front to back forced
airflow for cooling.
Fans:
One pair per channel of high-current,
60A color-coded binding posts. Accepts
banana plugs,wire of spade lugs.
Binding Post Output Jacks:
This EtherCon® Ethernet
connector is for networking.
Warning: Only connect to
networks that remain inside
the building.
Network Connector:
AES/EBU Digital Input:
Provide front to back
forced airflow for cooling.
Balanced Analog
XLR Inputs:
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.
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.
Power Button & Indicator:
Balanced Analog XLR Loop-Through Outputs:
Three buttons located
underneath the LCD screen
used to access menu items
and front panel lockout.
Backlit liquid crystal display
shows enabled presets and
speaker processing.
LCD Screen:
Front Panel Features
Fans:
Accepts a USB drive to transfer
presets from the drive to the
amplifier DSP, and vice versa.
Sel/Prev/Next Buttons:
Two black rotary level controls,
one for each channel.
Gain (Level) Controls:
USB 2.0 Connector:
Front-to-rear forced airflow
through foam dust filter.
Cooling Vents:
Ready Indicator: Green LED, one per channel, illuminates when the channel is initialized and ready to produce audio output. Indicator is off when the channel is set
to standby mode via System Architect or in Blackout mode.
Signal Indicator: selected input signal is abouve -40 dBu.
-20 dB Indicator: amplifier output is 20 dB below clipping.
-10 dB Indicator: amplifier output is 10 dB below clipping.
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.
Thermal Indicator: Red LED, one per channel, illuminates when the channel has shut down due to thermal stress or overload.
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.
Indicators:
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Back Panel Features
page 15
I-Tech HD Series Power Amplifiers
Advanced Operation
I-Tech HD Series Power Amplifiers
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.
Navigating the LCD Control Screen
Introduction
The LCD Control Screen and its controls let you configure the ampli­fier 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.)
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”.
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.
MENU TREE
Attenuation - Mute - Lockout
ALL MENUS: Next/Previous loops
Menu button
Sample Rate
Analog Input Sensitivity
Presets
Amp Mode
Locate
Prev to
Cobranet
Menu
Next
Prev
Next
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 dis­played 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.
Exit
Next
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
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
Next
MONITOR MENU
(press knob once to access
these items:)
Load Monitoring
Thermal %
Thermal Temp deg. C
AC Line Voltage
Operating Time
Watts Output
Exit
Level
Max
Suite
Exit
Next
NETWORKING MENU
(press knob once to access
these items:)
Network Info
Manufacturing Info
HiQnet Node Address
DHCP
IP Address
Subnet Mask
Exit
Next
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
Fan Errors
Clear All Error Logs
Next
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
To
Sample
Rate
Exit
Sweep Load Monitoring is not available in early I-Tech HD models.
page 16
Operation Manual
Operation Manual
page 17
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Presets
Downloadable Presets
Introduction
Crown and JBL engineers have designed I-Tech HD DSP presets that are opti­mized for various JBL loudspeakers,
such as Vertec Line Arrays. To use them, follow this procedure in System Architect:
Your I-Tech HD amplifier has a wide variety of onboard Digital Signal Process­ing (DSP). Some applications
for this DSP are speaker configuration (set­ting 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.
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.
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.
4.
In System Architect, see the Help file on Presets for details on downloading the pre­set 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.
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 ampli­fier. 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.
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 Dig­ital-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. Con­nect 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.
User Presets
User presets are DSP presets that you set up. This is the basic procedure:
Networking the Amplifier
1.
Adjust the DSP settings as desired in the System Architect soft­ware (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.
An I-Tech HD amplifier may be used in an existing I-Tech network and can use existing I-Tech device or venue
files.
4.
Select that preset from the LCD Control Screen. The preset will automat­ically set the DSP parameters as you set them up in the control software.
HiQnet node address
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.
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.
You can make the following settings via the front panel or by using the Network Troubleshooter:
DHCP off/on
IP address
Subnet mask
When you want to recall the preset, select it from the Preset screen in the LCD display. The preset will automat­ically set the DSP parameters as you set them up in the control software.
page 18
Operation Manual
Operation Manual
page 19
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Network Troubleshooter
Fixed-Gain mode in the I-Tech HD
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.
Fixed-gain mode makes any I-Tech HD model have the same gain, regardless of output power.
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.
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.
Maximum analog
input
Fixed gain
Low still
+21 be
26/32
dB
+21 dBu (0 dB)mode, the input trims (Analog, AES, CobraNet) can
However,Low
In fixed-gain
adjusted.
High +15 dBu (+6 dB)
Hi
+15 32/38 dB
Analog
input
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.
AES input trim
Analog
input
sensitivity
Source
select
Output
attenuator
Fixed
gain
compensation
AES
input
Limiters
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.
Amplifier
Cobranet input trim
Cobranet
input
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
loud­speaker 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.
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 Manual
Operation Manual
page 21
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Troubleshooting
CONDITION: Thermal indicator is
on.
“Off/Flashing/On” means that the LED can be off, or flashing, or on.
POSSIBLE REASON:
• The amplifier 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 illu­
minated.
CONDITION: Fault indicator is
flashing.
POSSIBLE REASON:
• The amplifier channel has stopped
operating. Refer the unit to an authorized
Crown Service Center.
POSSIBLE REASON:
• The amplifier has lost AC power.
• The amplifier is not plugged into the
power receptacle.
• Rear-panel breaker is off.
CONDITION: Power indicator is
off and power switch is not illu­
minated.
CONDITION: Power indicator
is off and power switch is illu­
minated.
POSSIBLE REASON:
POSSIBLE REASON:
• Load is wired incorrectly or Output Mode
switch in LCD-screen menu is set incor­
rectly. Check both.
• The amplifier’s power switch is off.
• 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.
CONDITION: Power indicator is
flashing.
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.
POSSIBLE REASON
• The AC line voltage has dropped below
15% or has risen above 15% of the
rated range.
page 22
Operation Manual
Operation Manual
page 23
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
sig­nal. Signal indicator is on or flashing.
CONDITION: Data indicator not flash­
ing, even though host computer
software is active.
POSSIBLE REASON
POSSIBLE REASON:
• Speakers not connected.
• Cable between computer and amplifier is bro­ken
or not connected.
• Open circuit due to speaker failure.
Note: Data indicator flashes only when the amplifier
is polled for data, or is polled to see whether it is
online.
• There is a short on the amplifier output. First
disconnect your speakers from the affected
channel(s) one by one to determine if one of
the loads is shorted.
CONDITION: Yellow LINK ACTIVITY indicator in
Ethernet connector does not illuminate or flash.
• Ready LED is off. Channel has been set to
standby mode via the software.
POSSIBLE REASON:
• Amplifier is in blackout mode. Press or
turn an Encoder to reactivate the LCD
display.
• 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.
CONDITION: No input signal. Signal
indicator is not flashing even though audio is
applied, and the channel is ready.
• Amplifier is in blackout mode. Press or turn an Encoder to
reactivate the LCD display.
POSSIBLE REASON
• Input signal level is very low.
• Another source is selected or routed.
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.
page 24
Operation Manual
Operation Manual
page 25
page 26
Operation Manual
Operation Manual
< ± 3 mV
EIA Standard 19-inch rack mount width
(EIA RS-310B), 3.5-inch (8.9-cm) height,
16.2-inch (41.1-cm) depth behind front
mounting surface
Dimensions
28 pounds (12.7 kg)
36 pounds (16.3 kg)
Dual-zone, microprocessor controlled,
continuously variable speed fans
Cooling
Weight
Net
Shipping
Flow-through ventilation from front
to back
Ventilation
I-T5000HD
USA, UK, European, Australia, India
AC Line Connector
Construction
Universal AC input, 100-240VAC (±15%),
50/60 Hz. Max. AC mains voltage
277VAC.
1-2-4-8-16 ohms
2-4-8 ohms
20 kilohms balanced, 10 kilohms
unbalanced
Required AC Mains
Load Impedance (Note: Safe with all types of loads)
Stereo
Bridge Mono
Input Impedance (nominal)
DC Output Offset (Shorted input)
> 55 dB, typically > 70 dB
Crosstalk (below rated power, 20 Hz to 1 kHz)
Common Mode Rejection (CMR) (20 Hz to 1 kHz)
> 5000
> 80 dB
Damping Factor (8 ohms): 20 Hz to 100 Hz
I-T5000HD
Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB.
Attenuators
Performance
24-bit conversion with 32-bit, floatingpoint DSP processing
Onboard HiQnet and TCP/IQ, compatible
with standard 100Mb Ethernet hardware
AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
24-bit 96 kHz Cirrus Logic
DSP
Network
Digital Input
A/D, D/A Converters
1.16 mS at 48 kHz, 529 µS at 96 kHz
< 0.35%
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,
from full rated output to –35 dB
Latency
< 0.1%
Total Harmonic Distortion (THD) at full rated power at 1 kHz
+15 dBu or +21 dBu, depending on
setting of maximum input level
> 108 dB
Signal to Noise Ratio below rated full-bandwidth power, A-weighted
Maximum Input Level
± 0.25 dB
37.1 dB to 22.2 dB
Adjustable in 0.1V steps from
1.28V to 8V
I-T5000HD
1800W
2000W
1250W
3600W
4000W
I-T5000HD
Frequency Response (at 1 watt, 20Hz - 20 kHz)
Voltage Gain for full rated power at 8 ohms
Input Sensitivity (volts RMS) for rated output
Performance
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
Minimum Guaranteed Power
28 pounds (12.7 kg)
36 pounds (16.3 kg)
EIA Standard 19-inch rack mount width
(EIA RS-310B), 3.5-inch (8.9-cm) height,
16.2-inch (41.1-cm) depth behind front
mounting surface
Dual-zone, microprocessor controlled,
continuously variable speed fans
Flow-through ventilation from front
to back
I-T9000HD
USA, UK, European, Australia, India
Universal AC input, 100-240VAC (±15%),
50/60 Hz. Max. AC mains voltage
277VAC.
1-2-4-8-16 ohms
2-4-8 ohms
20 kilohms balanced, 10 kilohms
unbalanced
< ± 3 mV
> 55 dB, typically > 70 dB
> 80 dB
> 5000
I-T9000HD
Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB
24-bit conversion with 32-bit, floatingpoint DSP processing
Onboard HiQnet and TCP/IQ, compatible
with standard 100Mb Ethernet hardware
AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
24-bit 96 kHz Cirrus Logic
1.16 mS at 48 kHz, 529 µS at 96 kHz
+15 dBu or +21 dBu, depending on
setting of maximum input level
< 0.35%
< 0.1%
­> 108 dB
± 0.25 dB
37.9 dB to 23.0 dB
Adjustable in 0.1V steps from
1.28V to 8V
I-T9000HD
2500W
3000W
1500W
5000W
6000W
I-T9000HD
28 pounds (12.7 kg)
36 pounds (16.3 kg)
EIA Standard 19-inch rack mount width
(EIA RS-310B), 3.5-inch (8.9-cm) height,
16.2-inch (41.1-cm) depth behind front
mounting surface
Dual-zone, microprocessor controlled,
continuously variable speed fans
Flow-through ventilation from front
to back
I-T12000HD
USA, UK, European, Australia, India
Universal AC input, 100-240VAC (±15%),
50/60 Hz. Max. AC mains voltage
277VAC.
1-2-4-8-16 ohms
2-4-8 ohms
20 kilohms balanced, 10 kilohms
unbalanced
< ± 3 mV
> 55 dB, typically > 70 dB
> 80 dB
> 5000
I-T12000HD
Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB
24-bit conversion with 32-bit, floatingpoint DSP processing
Onboard HiQnet and TCP/IQ, compatible
with standard 100Mb Ethernet hardware
AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
24-bit 96 kHz Cirrus Logic
1.16 mS at 48 kHz, 529 µS at 96 kHz
+15 dBu or +21 dBu, depending on
setting of maximum input level
< 0.35%
< 0.1%
­> 108 dB
± 0.25 dB
40.1 dB to 24.5 dB
Adjustable in 0.1V steps from
1.28V to 8V
I-T12000HD
3500W
4000W
2100W
7000W
8000W
I-T12000HD
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Specifications
page 27
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Charts
Typical Frequency Response (1W)
Typical Damping Factor vs. Frequency
Typical Crosstalk vs. Frequency
page 28
Operation Manual
Operation Manual
page 29
page 30
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
77.0
70.3
17.8
17.7
77.1
58.1
8.0
10.9
64.9
59.6
7.8
5.3
0.8
1.6
Line Current
120VAC
10.7
10.5
6.6
4.8
4.7
3.4
0.95
1.4
Operation Manual
Operation Manual
with severe clipping.
Typical of program material
1/3rd Power Pink Noise
just at clip.
Typical of program material
1/8th Power Pink Noise
Idle (sleep mode)
Idle (awake)
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
Load
73.9
67.0
27.6
25.0
74.4
55.9
11.5
13.6
65.7
57.6
11.6
6.6
1.0
2.1
Line Current
120VAC
Watts Out
Per 1A
Amp Line
Current
120VAC
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Data based on both channels driven.
14.9
16.0
8.1
6.8
7.0
4.2
1.0
1.7
Line Current
208VAC
113.5
127.2
125.3
96.5
108.8
91.2
Watts Out
Per 1A
Amp Line
Current
208VAC
I-T9000HD
115.3
129.1
126.2
96.1
106.9
94.6
Watts Out
Per 1A
Amp Line
Current
208VAC
Line Current
208VAC
I-Tech 9000HD AC Current Draw and Thermal Dissipation:
with severe clipping.
Typical of program material
1/3rd Power Pink Noise
just at clip.
Typical of program material
1/8th Power Pink Noise
Idle (sleep mode)
Idle (awake)
Load
Watts Out
Per 1A
Amp Line
Current
120VAC
I-T5000HD
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.
230VAC
13.6
14.3
7.4
6.2
6.3
3.8
0.95
1.6
Line Current
230VAC
9.4
9.5
124.3
141.0
137.2
105.3
120.4
99.8
Watts Out
Per 1A
Amp Line
Current
128.7
142.1
139.9
106.0
4.4
6.0
116.3
102.6
4.4
3.1
0.9
1.3
Line Current
230VAC
Watts Out
Per 1A
Amp Line
Current
230VAC
1223
1149
4173
3921
1977
2373
695
1338
205
767
Btu/hr
2024
579
709
612
376
410
356
262
157
505
kcal/hr
1052
988
498
598
510
337
177
660
kcal/hr
Thermal Dissipation
2814
2426
1491
1625
1413
1040
182
587
Btu/hr
593
392
60
225
Watts
Dissipated
824
711
437
476
414
305
53
172
Watts
Dissipated
Thermal Dissipation
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
AC Power Draw and thermal Dissipation
page 31
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Advanced Featured
kcal/hr
183
625
379
603
657
615
1179
1368
Btu/hr
212
726
1504
2394
2607
2439
4677
5425
Thermal Dissipation
Protection System
Your Crown amplifier provides extensive pro­tection and diagnostic capabilities, including thermal level control,
fault indicators, high-pass filtering, DC protect, AC under/over volt­age protection, inrush limiting, and variablespeed fans with tachometer feedback. Microprocessor monitors fans, and signals an error via System Architect if
fans are not operating.
page 32
1589
131.1
Circuit Breaker
If the current draw of the amplifier exceeds safe limits, this breaker automatically disconnects the power supply
from the AC mains.
118.0
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).
69.2
19.9
17.9
1370
144.2
128.6
76.3
20.8
18.7
715
142.0
128.3
77.4
11.0
9.9
764
113.6
106.1
62.9
8.2
7.7
701
124.5
115.2
68.8
8.7
8.0
441
111.8
4.7
63.6
103.3
1.1
1.8
33.9
35.1
18.1
Power Factor Correction (PFC) controls how your amplifier draws current from the AC mains. Instead of drawing
high-magnitude cur­rent spikes that reduce the capacity of your power distro (and couple noise into other sys­tem
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 distri­bution and improve the performance of your
signal processors.
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
Color-Coded Overlay
The labels on the rear panel are color coded to group similar functions under common colors.
with severe clipping.
Typical of program material
1/3rd Power Pink Noise
14.2
8.3
14.6
just at clip.
Typical of program material
8 Ohms/Ch.
16 Ohms Bridge
4 Ohms/Ch.
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
0.9
2.0
Idle (sleep mode)
Idle (awake)
1/8th Power Pink Noise
Line Current
208VAC
Line Current
120VAC
5.1
62
213
1.0
1.6
Line Current
230VAC
Watts Out
Per 1A
Amp Line
Current
If the amplifier becomes too hot for safe opera­tion, the TLC will engage the input compressor and the clip LED will
illuminate. By compress­ing 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.
By contrast, switching power supplies can operate with a much smaller (and lighter) trans­former because they first
convert the AC up to a much higher frequency, thereby reducing waste.
Load
208VAC
I-T12000HD
Watts Out
Per 1A
Amp Line
Current
Watts Out
Per 1A
Amp Line
Current
120VAC
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz.
Typical line impedance used.
Data based on both channels driven.
I-Tech 12000HD AC Current Draw and Thermal Dissipation:
230VAC
Watts
Dissapited
Thermal Level Control (TLC)
Operation Manual
Operation Manual
page 33
I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Setting Sensitivity for Best Gain Staging
Service
Optimized system gain structure maximizes signal to noise within the sys­tem. Adjusting your amplifier to fit
within an optimized system gain struc­ture is accomplished by properly setting both the sensitivity and attenuation
controls within the amplifier. I-Tech amplifiers offer 149 sensi­tivity 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.
Crown amplifiers are quality units that rarely require ser­vicing. Before returning your unit for service, please con­
tact 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.
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 tempo­rary adjustments in
amplifier gain. Instead, set the sensitivity/gain of your I-Tech amplifier so that you can achieve the desired output
with the attenu­ators at or near 0 dB.
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.
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).
International and Canada Service
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.
Remember to transport your unit in the original factory pack.
Warranty is only valid within the country in which the product was purchased.
Service may be obtained from an authorized service cen­ter. (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.
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.
Service at a US Service Center
This method usually saves the most time and effort. Sim­ply 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. Remem­ber
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 ser­viceable 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 send­ing the unit.
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Operation Manual
Operation Manual
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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:
I-Tech HD Series Power Amplifiers
Estimate Approval
Approval of estimate must be given within 30 days after being notified by Crown Audio Inc. Units still in the pos­
session of Crown after 30 days of the estimate will become the property of Crown Audio Inc.
Payment of Non-Warranty Repairs
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.
If you have any questions, please contact Crown Factory Service.
3.
Ship product to:
CROWN AUDIO FACTORY SERVICE
1718 W MISHAWKA RD.
ELKHART, IN 46517
Crown Factory Service
1718 W. Mishawaka Rd.,
Elkhart, Indiana 46517 U.S.A.
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 respon­
sibility for damaged goods and/or accessories that are sent with your unit.
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.
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. Fill out and include the Crown Audio Factory Ser­vice Information sheet in the back of this manual.
2. Do not ship any accessories (manuals, cords, hard­ware, 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 mini­mum 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 war­ranty.
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.
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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Operation Manual
Operation Manual
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I-Tech HD Series Power Amplifiers
I-Tech HD Series Power Amplifiers
Warranty — UNITED STATES & CANADA
Warranty — WORLDWIDE EXCEPT USA & CANADA
SUMMARY OF WARRANTY
Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL
PURCHASER and ANY SUB­SEQUENT 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 product­is 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 War­ranty.
SUMMARY OF WARRANTY
Crown International, 1718 West Mishawaka Road, Elkhart, Indiana 46517-4095 U.S.A. warrants to you, the ORIGINAL
PURCHASER and ANY SUB­SEQUENT OWNER of each NEW Crown1 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, 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 was purchased.
Warranty is only valid within the country in which the product is purchased.
ITEMS EXCLUDED FROM THIS CROWN WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period. It
does not cover any product which has been damaged because of any inten­tional 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.
Note: If your unit bears the name “Amcron,” please substitute it for the name “Crown” in this warranty.
WHAT THE WARRANTOR WILL DO
We will remedy any defect, regardless of the rea­son for failure (except as excluded), by repair, replacement, or refund.
We may not elect refund unless you agree, or unless we are unable to pro­vide 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 encumbrances. The refund will be equal to the actual purchase price, not
including inter­est, insurance, closing costs, and other finance charges less a reasonable depreciation on the product
from the date of original purchase. War­ranty work can only be performed at our autho­rized 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 service center or our factory within a reasonable time after receipt of the defec­tive product at our
authorized service 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 between any for­eign country
and the port of entry in the United States including the return shipment, and all taxes, duties, and other customs fees
for such for­eign shipments.)
HOW TO OBTAIN WARRANTY SERVICE
You must notify us of your need for warranty ser­vice within the warranty 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 reason­
able 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 satisfactory, notify us or our autho­rized service center immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES
YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN
THE NEW CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULT­ING
FROM SUCH A DEFECT. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR
CONSEQUENTIAL DAM­AGES, SO THE ABOVE LIMITATION OR EXCLU­SION MAY NOT APPLY TO YOU.
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 Warranty.
DESIGN CHANGES
We reserve the right to change the design 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 WARRANTY 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.
ITEMS EXCLUDED FROM THIS CROWN­WARRANTY
This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period. It
does not cover any product which has been damaged because of any inten­tional 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 rea­son for failure (except as excluded), by repair, replacement, or refund.
We may not elect refund unless you agree, or unless we are unable to pro­vide 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 encumbrances. The refund will be equal to the actual purchase price, not
including inter­est, insurance, closing costs, and other finance charges less a reasonable depreciation on the product
from the date of original purchase. War­ranty work can only be performed at our autho­rized service centers. We will
remedy the defect and ship the product from the service center within a reasonable time after receipt of the defec­tive
product at our authorized service center.
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 cen­ter
are not satisfactory, notify our authorized ser­vice center immediately.
DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES
YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN
THE NEW CROWN PRODUCT. THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULTING
FROM SUCH A DEFECT.
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 Warranty.
DESIGN CHANGES
We reserve the right to change the design 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 STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN
PRODUCTS.
5/11
THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN
PRODUCTS.
5/11
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Operation Manual
Operation Manual
page 39