Crown Audio I-Tech 4x3500HD - Manual (Page 19)

I-Tech HD DriveCore Series Power Amplifiers
Operation Manual page 19
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 7.3.
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 2 is in use.
• The amplifier settings have been modified (M) since Preset 2 was loaded.
7 Advanced Operation
Sample Rate: Starting from the Attenuation screen, press Menu/exit to go
to the Sample Rate screen in the advanced mode. The sample rate of the
amplifier’s DSP is displayed. It can be modified only in System Architect
software because 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.
Analog input Sensitivity: (Tap to select a channel, turn the encoder to adj.)
This screen also displays the amp gain for each channel resulting from the
sensitivity settings.
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/pdf/amps/137327.pdf.
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, pairs of channels are summed to double the power,
and the amplifier puts out a mono signal.
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.