Crown I-Tech Owners manual
I-Tech Application Guide 1
Application Guide
© 2005 by Crown Audio Inc., 1718 W. Mishawaka Rd., Elkhart, IN 46517-9439 U.S.A.
Telephone: 574-294-8000. Fax: 574-294-8329.
www.crownaudio.com
Trademark Notice: Grounded Bridge™ is a trademark, and Crown
trademarks of Crown International.
Other trademarks are the property of their respective owners.
®
and Macro-Tech® are registered
Application Guide
137327-3A
09/05
2 I-Tech Application Guide
Introduction
This application guide provides useful information designed to help you best use your
new Crown
tion Manual, which describes the specifi c features and specifi cations of your amplifi er.
This guide also provides suggestions for matching I-Tech Series amplifi ers to JBL
ERTEC
V
I-Tech / VerTec combinations. A list of suggested publications and webpages is provided
for your convenience in the Appendix section.
Please be sure to read all instructions, warnings and cautions contained both in this
guide and your amplifi er’s Operation Manual.
®
I-Tech Series amplifi er. It is designed to complement your amplifi er’s Opera-
®
Line Array loudspeaker systems, along with wiring pin assignments for several
Application Guide
I-Tech Application Guide 3
Table of Contents
Introduction .....................................................................................2
1 Power and Thermal Information ..........................................................5
1.1 Output Power ..................................................................................................5
1.2 AC Power Draw and Thermal Dissipation ........................................................5
1.3 AC Power Distribution .....................................................................................6
2 Wiring Recommendations .................................................................6
2.1 Input Wiring ....................................................................................................6
2.1.1 Analog and AES/EBU Wiring ..................................................................6
2.2 Output Wiring .................................................................................................6
2.3 Network Wiring ...............................................................................................8
3 I-Tech Settings ...............................................................................9
3.1 Setting Sensitivity ...........................................................................................9
3.2 Setting Limiters ...............................................................................................9
3.3 Communicating with I-Tech ..........................................................................10
3.3.1 IQwic Software .....................................................................................10
3.3.2 Network Wizard ....................................................................................10
3.3.3 Engage a Dataframe .............................................................................11
3.4 Presets ..........................................................................................................12
3.4.1 Save Settings as a Preset .....................................................................12
3.4.2 Recall a Preset .....................................................................................12
3.5 Loading Firmware .........................................................................................13
3.5.1 TCP/IQ Utility ........................................................................................13
3.5.2 Front Panel Firmware ...........................................................................14
3.5.3 DSP Firmware ......................................................................................14
4 I-Tech and JBL V
Appendix ...................................................................................... 33
I-Tech Sensitivity Charts .....................................................................................25
Frequently Asked Questions (FAQs) ....................................................................28
Website Links ......................................................................................................32
ERTEC .................................................................... 15
Application Guide
4 I-Tech Application Guide
1
Menu/Exit Prev Next
2
Application Guide
Section 1: I-Tech Power Information 5
1 Power and Thermal Information
1.1 Output Power
Figure 1.1
I-Tech Output Power
Guaranteed minimum power output per channel, 20 Hz to 20 kHz, <0.35% true THD, both channels driven. Rated power is not part-tolerance dependent.
120-240VAC 50 to 60 Hz.
1.2 AC Power Draw and Thermal Dissipation
Pink noise 12dB crest factor, bandwidth limited 22Hz to 22kHz. Typical line impedance used.
Data based on both channels driven.
Figure 1.2
I-Tech AC Power Draw
and Thermal Dissipation
120VAC 208VAC 230VAC
Watts Out
Idle (sleep mode) 0.8 0.95 0.9 53 182 157
Idle (awake) 1.6 1.4 1.3 172 587 505
1/8th Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
just at clip. 4 Ohms/Ch.
1/3rd Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.
Load
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
Line Current
Amp Line
120VAC
5.3 94.659.6
7.8
10.9
17.8 711
17.7 115.3 128.7 824
I-T4000
230VAC
3.1
4.4
4.4
6.0
9.5
9.4
Watts Out
Amp Line
Current
Watts Out
Per 1A
Line Current
Current
208VAC
64.9 116.3
58.1
77.1
77.0
70.3
Per 1A
Amp Line
Line Current
Current
3.4
106.9
4.7 414
96.1
4.8
126.2
6.6
129.1
10.5
10.7
Per 1A
102.6
106.0
139.9
142.1
Watts
Dissipated
305
437
Thermal Dissipation
Btu/hr kcal/hr
1040 262
1413 356
4108.0 476
1625
1491
376
2426 612
709
2814
Per 1A
Current
Per 1A
Current
62.9
77.4
76.3
69.2
I-T6000
Watts Out
Per 1A
Amp Line
Line Current
208VAC
14.9 13.667.0 113.5 4173 105225.0 1223124.3
I-T8000
Line Current
208VAC
8.7
8.2
11.0
20.8
19.9
Current
Watts Out
Per 1A
Amp Line
Current
115.2
106.1
128.3
128.6
Line Current
230VAC
230VAC
Line Current
230VAC
8.0
7.7
9.9
18.7
Watts Out
Per 1A
Amp Line
Current
Watts Out
Per 1A
Amp Line
Current
111.8
124.5
113.6
142.0
144.2
Thermal Dissipation
Watts
Dissipated
Dissapited
Btu/hr kcal/hr
593 2024 510
695
579 1977 498
1149 3921 988
Thermal Dissipation
Watts
Btu/hr kcal/hr
441 1504 3798.3 63.6 103.35.1 4.7
701
1370 4677 1179
1589 5425 1368118.0 131.117.9
120VAC 208VAC 230VAC
Watts Out
Line Current
Idle (sleep mode) 1.0 1.0 0.95 60 205 177
Idle (awake) 2.1 1.7 1.6 225 767 660
1/8th Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
just at clip. 4 Ohms/Ch.
1/3rd Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.
Idle (sleep mode) 0.9 1.1 1.0 62 212 183
Idle (awake) 2.0 1.8 1.6 213 726 625
1/8th Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
just at clip. 4 Ohms/Ch.
1/3rd Power Pink Noise 8 Ohms/Ch.
Typical of program material 16 Ohms Bridge
with severe clipping. 4 Ohms/Ch.
Load
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
Load
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
8 Ohms Bridge
2 Ohms/Ch.
4 Ohms Bridge
120VAC
Line Current
120VAC
Amp Line
6.6 4.2 3.857.6 91.2 99.8 392 1338 337
11.6 7.0 6.365.7 108.8 120.4
11.5 6.8 6.255.9 96.5 105.3 2373 598
13.6 8.1 7.474.4 125.3 137.2
27.6 16.0 14.373.9 127.2 141.0
120VAC 208VAC
Watts Out
Amp Line
14.6 68.8 2394 603
14.2 764 2607 657
18.1 715 2439 615
35.1
33.9
Application Guide
6 Section 2: Wiring Recommendations
1.3 AC Power Distribution
All I-Tech amplifi ers are rated using a 20amp power cord per UL/CSA/EC safety standards. I-Tech’s innovative PFC technology allows I-Tech to draw current from the mains
in a more controlled and effi cient way providing greater power on a single 20 amp
breaker. A single I-tech amplifi er can be run on a dedicated 20-amp circuit. A professional power distribution system is ideal when using a rack or multiple racks of I-Tech
amplifi ers. A larger system may use a 200 Amp, 120VAC three-phase, 12-cricuit-distribution rack, which provides dedicated 20-amp circuits for each of the amplifi ers in the
system.
Note: Most power distribution systems use heavy duty thermal /magnetic circuit breakers.
2 Wiring Recommendations
2.1 Input Wiring
Your I-Tech amplifi er will come with either analog and AES/EBU input signal connections or with integrated IQ Network and CobraNet™ connections.
2.1.1 Analog and AES/EBU Wiring
Figure 2.1 shows connector pin assignments for balanced analog wiring or AES/EBU
digital wiring.
IMPORTANT: 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. Cable lengths of up to 100 meters are easily supported
with 110 ohm shielded
twisted-pair cable. Longer
line distances are possible
with the use active repeaters, and/or transmission
and receiver equalization.
Refer to the AES Standard
for AES/EBU signal wiring
for more information (link
in the Appendix section of
this guide).
Figure 2.1
Balanced Analog and
AES/EBU Wiring
2.2 Output Wiring
Your I-Tech amplifi er includes both industrial-grade (50A) binding post and Neutrik®
Speakon® NL4MP output connectors. In order to maximise power transfer to the
loudspeaker and minimize line
loss, we recommend using 10
AWG or larger professional-grade
speaker cable. The chart in Figure
2.2 shows line losses per 20 feet
of cable. Note that amplifi er output
impedance has effect on line loss,
and output impedance for I-Tech is
factored into these fi gures.
Application Guide
Figure 2.2
I-Tech Line-Loss
Section 2: Wiring Recommendations 7
Figures 2.3 through 2.6 show pin assignments for both binding post and Speakon connection.
Figure 2.3
Output Wiring with
5-Way Binding Post
Connectors
Figure 2.4
Stereo Output Wiring
with Both Speakon
Connectors
Top Speakon
(Channel 1)
Figure 2.5
Stereo Output Wiring
with a Single Speakon
Connector
Figure 2.6
Bridge Output Wiring
with a Single Seakon
Connector
Channel 1
Loudspeaker
Bottom
Speakon
(Channel 2)
Top Speakon
(Channel 1)
Channel 2
Loudspeaker
Channel 1
Top Speakon
(Channel 1)
Speakon
Loudspeaker
Application Guide
8 Section 2: Wiring Recommendations
2.3 Network Wiring
To take advantage of the many features available in your I-Tech amplifi er via the
IQ Network, you can establish a simple network connection between a PC and your ITech amplifi er. Standard 100Mb Ethernet hardware and network protocol apply. Figure
2.7 shows a connection between a PC and a single I-Tech amplifi er using a crossover
network cable. Figure 2.8 shows a simple IQ Network between a single PC and three
I-Tech amplifi ers.
Figure 2.7
Connecting to a single
I-Tech Amplifi er
Fast Ethernet networks including IQ Networks require Cat. 5 grade or higher network
cabling. For best results, the use of preassembled Cat. 5 cables is recommended.
When assembling your own network cables, it is good practice to follow the EIA/TIA
568B protocol for RJ-45 cable. This protocol assigns wire colors as follows:
Figure 2.8
Three I-Tech Amplifi ers
in a Simple IQ Network
Figure 2.9
EIA/TIA 568B
Color Code
Extra care must be taken when attaching RJ-45 connectors to cable. Make sure you
use the appropriate crimping tool and verify that the connector is properly seated into
the tool, or damage will result.
Application Guide
Section 3: I-Tech Settings 9
-23.0
Attenuation Preset 12 (M)
-23.0
dB
OFF
Peak Voltage Limiter
224
v
3 I-Tech Settings
I-TechSeries amplifi ers allow unprecedented control over amplifi er and system settings
within the amplifi er. While a full discussion of all available settings is beyond the scope
of this guide, a few key settings are described, along with instructions on storing and
recalling presets, and loading settings into the amplifi er from the IQ Network.
3.1 Setting Sensitivity / Gain
Optimized system gain structure maximizes signal to noise within the system. Adjusting your amplifi er to fi t within an optimized system gain structure is accomplished
by proprerly setting both the sensitivity and attenuation controls within the amplifi er.
I-Tech amplifi ers offer 149 sensitivity and gain settings allowing very fi ne adjustment of
the amplifi er’s gain and voltage sensitivity. The Appendix section of this guide provides
charts with sensitivity in volts and gain in dB for each sensitivity/gain setting.
Figure 3.1
Sensitivity / Gain Setting
Attenuation Preset 12 (M)
-23.0
attenuation adjustment should only be used for small (3 dB) or temporary adjustments
in amplifi er gain. Instead, set the sensitivity/gain of your I-Tech amplifi er so that you
can achieve the desired output output with the attenuators at or near 0 dB.
Example: Suppose that you are using an I-T8000 with the sensitivity/gain set at 1.4V
/ 37.1 dB. After optimizing the gain structure of the rest of your system you fi nd that
attenuating the amplifi er by 10 dB produces the desired loudness. The same output
level, with improved signal to noise and headroom performance, can be achieved by
using 0 dB of attenuation and by setting the amplifi er sensitivity/gain to 5.81V/27.0 dB
(37 dB – 10 dB = 27 dB).
Note: as indicated in the appendix the list of possible sensitivity settings is different
for each position of the max input setting. If while adjusting sensitivity/gain in your
amplifi er you do not fi nd the setting you need, try changing the status of the max input
setting and search again.
dB
-23.0
With other amplifi ers, 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
amplifi ers and can, in fact, degrade performance. The
Figure 3.2
Output Limiters
3.2 Setting Limiters
I-Tech amplifi ers are capable of providing higher voltage at the output than any other
amplifi er in their class, thus loudspeaker protection is more important than ever before.
I-Tech amplifi ers provide three different types of output limiters, each a separate and
useful way to protect your system without compromising the sound quality. The Clip
Eliminator monitors the clip events at the output of the amplifi er and attenuates the
signal to prevent the amplifi er from clipping. The Peak Voltage Limiter allows you to
set a peak voltage threshold for the output of the amplifi er enabling you to protect
your speaker system. The Average Power Limiter allows you to regulate the long term
output of the amplifi er by setting an average power limit that corresponds with the
speaker’s long-term power rating. All three limiters can be accessed from the front
panel display as shown in Figure 3.2, and from IQwic software.
Peak Voltage Limiter
OFF
Application Guide
224
10 Section 3: I-Tech Settings
3.3 Communicating with I-Tech
One of the most convenient features within I-Tech amplifi ers is the ability to load amplifi er settings, including DSP settings, into your amplifi er, and to save settings as presets
via IQwic IQ Network software. This section provides a quick overview of the IQwic
software and the procedures for loading and saving settings with IQwic. Note: the
front panel work surface only allows you to recall a stored preset. You must use IQwic
software to create, modify, and store presets.
3.3.1 IQwic Software
IQwic is the name of the software program that runs on the computer that facilitates
the setup, control and monitoring of components in an IQ Network, including I-Tech
amplifi ers. When IQwic is run on the computer, a “Main Window,” a “Workplace
Window,” and “Component Control Panels” may be open on your screen. These are
shown below in Figure 3.3.
Figure 3.3
Main Window
Windows in IQwic
Software
Component
Control Panel
Main Window : The Main Window consists of the Main Menu, toolbar and status bar,
and is the central point of control over IQ Network functions. The Main Menu contains menu selections that let you start any activity in IQwic. The Main Menu appears
in the Main Window. It consists of six Main Menu options, including File, Edit, View,
Dataframe, Setup and Help.
Dataframes: A Dataframe is a snapshot of the system at any given point. Dataframes
contain information about system elements (what components are in the system) and
screen elements (window sizes and positions). Dataframes can be saved to disk at
anytime. A Dataframe includes:
• A reference to and description of every IQ component in an IQ Network.
• The control settings of every one of these IQ components.
• The Workplace Window and its contents, Component Images and labels.
• Any scenes created within the Dataframe.
• The size and positions of any auxiliary windows including Control Panels.
When you create a new Dataframe, you create in computer memory a model for the
control of an actual IQ Network. Saving the Dataframe records this model as a fi le that
you can recall later within IQwic.
Workplace Window
3.3.2 Network Wizard
The Network Wizard provides a quick way to establish communications with your TCP/
IQ networked components. Using the Network Wizard, you can address your components and be informed of addressing and other errors in the system. Start the Network
Wizard by selecting Setup > Network Wizard from the IQwic Main Window.
Application Guide
Section 3: I-Tech Settings 11
A series of screens will step you through choosing a network card, discovering and
addressing components on the network, and troubleshooting networking errors. For
further help with setting up your TCP/IQ network, refer to the help fi les in IQwic software.
Figure 3.4
Network Wizard
3.3.3 Engage a Dataframe
Note: This procedure assumes you have already established TCP/IQ network communications between your PC and your I-Tech amplifi er(s).
To engage a Dataframe is to copy the software control settings of one or more components included in the Dataframe to the actual components of an IQ Network. Make sure
that you have addressed the components.
Engage a Dataframe by selecting Dataframe >Engage from the IQwic Main Window.
Figure 3.5
Engage Dataframe
Figure 3.6
Choose Components to
Engage
You can control exactly which components are engaged through the Include in Engage
and Upload dialog, which appears the fi rst time that the Engage (or Upload*) command
is invoked.
*Upload refers to the opposite action of Engage. With Upload, the current settings within one or more
components are copied to the software.
Choose the amplifi ers you wish to Engage with the Dataframe by highlighting them in
this dialog, then click “OK.”
Once you have completed the Engage Dataframe step, the amplifi er settings from the
IQwic Dataframe are now also contained in your I-Tech amplifi er.
Application Guide
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