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4 Advanced Operation
DHCP: Turn an Encoder knob to turn DHCP on or off, then press the knob to
4.2.7 COBRANET MENU
To access the CobraNet Menu from the Attenuation screen, press an Encoder
confirm your selection. With DHCP enabled, the IP address of the amplifier
knob, then press Prev. This menu has selections for setting CobraNet
might change at power-up. See System Architect Help files for more
parameters. Press an Encoder knob to access the CobraNet Menu selections.
information on DHCP.
See Section 9.2 and the System Architect Help files for more on CobraNet.
DHCP: (caution! Dynamic IP)
OFF
Changes IP at powerUp
IP Address: You set the IP address of the amplifier here. See Section 9.1 for
more information on IP Address. This function is disabled when DHCP is
CobraNet Information: This screen displays information about the
enabled.
CobraNet network: The firmware version, ethernet status (down or up), and
1. Press an Encoder knob to access the left three digits, then turn the knob to
conductor priority.
set the number.
2. Press again to access the middle three digits, then turn the knob to set the
number.
3. Press again to access the next digit to the right, then turn the knob to set the
number.
4. Press again to access the right-most digit, then turn the knob to set the
number.
5. Press again to save the IP address.
Ch1 CobraNet Rx: Turn the left Encoder knob to set the number of the RxA
IP Address
Bundle for Channel 1. Turn the right Encoder knob to set the CobraNet input for
192.168.1.1
Channel 1. The word "Active" appears if there is audio on the bundle. Bundles
1-8 are available at 48 kHz sampling rate, and bundles 1-4 are available at 96
Turn to Set-Press to Save
kHz sampling rate.
Subnet Mask: You set the Subnet Mask of the amplifier here. See Section 9.1
for more information on Subnet Mask. This function is disabled when DHCP is
enabled.
1. Press an Encoder knob to access the left three digits, then turn the knob to
set the number.
2. Press again to access the middle three digits, then turn the knob to set the
number.
Ch2 CobraNet Rx: Turn the left Encoder knob to set the number of the RxA
3. Press again to access the next digit to the right, then turn the knob to set the
Bundle for Channel 1. Turn the right Encoder knob to set the CobraNet input for
number.
Channel 2. The word "Active" appears if there is audio on the bundle. Bundles
4. Press again to access the right-most digit, then turn the knob to set the
1-8 are available at 48 kHz sampling rate, and bundles 1-4 are available at 96
number.
kHz sampling rate.
5. Press again to save the Subnet Mask.
Subnet Mask
255.255.0.0
Turn to Set-Press to Save
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I-Tech HD Series Power Amplifiers
CobraNet Tx: Turn the left Encoder knob to set the number of the TxA Bundle
for Channel 1. Turn the right Encoder knob to set the TxA position for Channel
2.
Cobranet Tx Bundles
0
Cobranet Menu
TxA (ch1)
Cobranet Menu
Push knob for cnet. menu
CobraNet Conductor Priority: Turn an Encoder knob to set the priority
number of the CobraNet channel. Press the knob to confirm your choice. See
Section 9.2 for more on CobraNet conductor priority.
Cobranet Conductor Priority
16
Turn to Set-Press to Save
Cobranet Information
2.11.6
Firmware Version:
Ethernet Status:
UP
Conductor Priority:
32
CobraNet Transport Latency: Turn an Encoder knob to set the CobraNet
transport latency: either 5.33, 2.66, or 1.33msec. Press the knob to confirm
your choice. This latency must match the Cobranet source for proper Cobranet
reception.
Cobranet Transport Latency
5.33ms
Turn to Set-Press to Save
Ch1 Cobranet Rx
0
A c t i v e
RxA Bundle
Cnet Input
Ch2 Cobranet Rx
0
Active
Cnet Input
RxB Bundle
I-Tech HD Series Power Amplifiers
4 Advanced Operation
4.3 Presets
4.3.1 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
0
(set ting the drive levels, frequency bands, delays and limiting for your
particular speakers), EQ, filtering, compression, and much more. Those
TxB (ch2)
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.
Operation Manual
Operation Manual
4.3.3 Downloadable Presets
We will describe each type of preset in detail.
Crown and JBL engineers have designed I-Tech HD DSP presets that are
4.3.2 User Presets
opti mized for various JBL loudspeakers, such as Vertec Line Arrays. To use
User presets are DSP presets that you set up. This is the basic procedure:
them, follow this procedure in System Architect:
1. Adjust the DSP settings as desired in the System Architect soft ware (not
1. Go to the I-Tech pages at www.crownaudio.com.
with the LCD Control Screen).
2. Select Downloads.
2. Save this group of settings as preset. Give it a label.
3. Click on the file of your choice. It will download to your computer.
3. Download the preset to the I-Tech HD amplifier. See the software Help file
4. In System Architect, see the Help file on Presets for details on downloading
for details. As soon as you save the setting as a preset, it is sent to the
the pre set to an I-Tech HD amplifier. Basically, you will open and engage a data
amplifier. Another option, described on the next page, is to transfer the
frame. The file will overwrite the preset you designate. Another option,
preset file using a USB drive.
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
5. Recall the preset from the LCD Control Screen. Then your amp will be
automat ically set the DSP parameters as you set them up in the control
configured to work with the specified loudspeaker model.
software.
Section 4.8.19 describes the Presets Manager screen in System Architect.
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.
page 23
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