Advanced Menu - Crown I-T12000 HD Operation Manual

I-Tech HD Series Power Amplifiers
4 Advanced Operation
Sample Rate: Starting from the Attenuation screen, press Menu/Exit to go
to the Sample Rate screen. The sample rate of the amplifier's DSP is displayed.
It can be modified only in System Architect software because all of the FIR filter
settings will need to be recalculated as a result of the change. Please refer to its
Help files. When you route a Cobranet input, the sample rate displayed here
must match the Cobranet source.
Sample Rate
96 kHz
Modify in software ONLY!
Analog Input Sensitivity: Turn the left Encoder knob to change the Ch. 1
input sensitivity; turn the right Encoder knob to change the Ch. 2 input
sensitivity. This screen also displays the amp gain for each channel resulting
from the sensitivity settings. See Figure 4.4.
Note: If you do not see the sensitivity you need, try changing the Maximum
Analog Input level in the Advanced Menu (described later). This makes
different sensitivities available.
To optimize the system gain structure, see Section 3.1 in the I-Tech application
Guide at www.crownaudio.com/itech/pdf/137327.pdf.
Analog Input Sensitivity
2.90 2.90
Vrms
31.5 31.5
dB Gain
Operation Manual
Presets: A preset is a group of DSP and amplifier settings for a particular
speaker system. Turn an Encoder to view Presets 1 through 50. To recall a
preset, press the Encoder, then press and hold the Encoder to confirm. For
more information on presets, see Section 4.3.
The preset currently in use is displayed in the upper right corner.
(A) Active means that the amplifier is operating exactly according to that
preset.
(M) Modified means that the amplifier is operating according to the preset
but with some settings changed.
If a preset number is flashing, it is not in use.
In the example shown below,
• Preset 7 is in use (it's in the upper right corner).
• The amplifier settings have been modified (M) since Preset 7 was loaded.
• The large "7" is not flashing, which means that Preset 7 is in use.
Presets Preset7 (M)
7
Preset7
CH1:MF-1&2
CH2:MF-3&4
In the example shown below, you turned down an Encoder knob two notches
after load ing Preset 7.
• Preset 7 is in use (it's in the upper right corner).
• Preset 7 is active (A). That means the amplifier is operating exactly according
to that preset.
• The large "5" is flashing because Preset 5 is not in use.
• Preset 5's Channel-1 label is "LF–1&2."
• Preset 5's Channel-2 label is "LF–3&4."
Presets Preset 7(A)
5
Preset7
CH1:LF-1&2
CH2:LF-3&4
Amp Mode: This screen lets you set up the amplifier for Dual, Input Y or
Bridge Mono mode. Turn an Encoder knob to choose among those three
options, then press the knob to save your choice. You will be prompted to
confirm your choice. The LCD screen displays the currently selected mode.
In Dual (or Stereo) mode, both channels operate independently.
In Bridge Mono mode, both channels are summed to double the power, and the
amplifier puts out a mono signal.
In Input Y mode, Channel 1's input signal feeds both channels, and each
channel can be set to a different output level, usually for bi-amp operation.
Amp Mode
<Dual>
Turn to Set-Press to Save
Locate: Allows users to identify a specific amplifier in a large network of
amplifiers without having to compare address infor mation. Locate can be
turned on/off from software and/or the front panel. Press an Encoder knob to
turn on the Locate function. When on, the LCD screen flashes. Press the knob
again to turn off the Locate function. In System Architect, the device icon has a
blue outline to indicate that it is in Locate mode.
Locate
OFF
Press enc to toggle

4.2.3 ADVANCED MENU

When you see this screen, press an Encoder knob to access the selections in
the Advanced Menu, described next. To get to the Advanced Menu screen from
the Attenuation screen, press Menu/Exit twice, then press Next five times.
Advanced Menu
Advanced Menu
Push knob for adv. menu
page 17