Crown I-T5000 HD Operation Manual page 19

I-Tech HD Series Power Amplifiers
4 Advanced Operation
Bandpass Gain: In each channel of the I-Tech HD's DSP, just before the
output limiter and after the preceding filter, is a gain block (not shown on the
Signal Path block diagram). Bandpass Gain adjusts the gain of this block
between -24 dB and +24 dB.
Adjusting the bandpass gain in the LCD screen makes it easy to vary the level of
subwoofers, midrange drivers and high-frequency driv ers.
Bandpass Gain
0.0 0.0
dB
Output Polarity: Press each channel's Encoder knob to toggle the output
signal polarity between + and –.
Output Polarity
+ +
Press enc to toggle
Input Delay: Sets the input signal delay in each channel. Turn each channel's
Encoder knob to vary the delay. The delay step size is speed sensitive. Pressing
the encoder enables or disables the Delay.
Below each channel's delay setting is the equivalent distance in feet and meters.
For example, 10 ms is the signal delay of sound traveling 11.3 feet or 3.4 m.
Input Delay
0.0000 0.0000
ms
0.0/0.0 0.0/0.0
ft/m
Output Delay: Sets the output signal delay in each channel. Turn each
channel's Encoder knob to vary the delay. The delay step size is speed sensitive.
Pressing the encoder enables or disables the Delay.
Below each channel's delay setting is the equivalent distance in feet and meters.
For example, 10 ms is the signal delay of sound traveling 11.3 feet or 3.4 m.
Speaker Delay
0.0000
0.0000
ms
0.0/0.0 0.0/0.0
ft/m
Operation Manual
LED Meter Display Type : Here you can set the LCD bar meters to display
average or peak levels. Turn an Encoder knob to select the option, then press
the knob to confirm your selection.
LED Meter Display Type
AVERAGE
Turn to Set-Press to Save
Bar Meter Display Type: You can select what the bar meters will display in
the Attenuator Screen. Press an Encoder knob to select Attenuation, Input
Levels, Output Levels, or Thermal %. Attenuation is displayed as the length of
the bar meters in the Atten uation screen that appears on startup. The meters
display average input levels and output levels.
Bar Meter Display Type
ATTENUTATION
Turn to Set-Press to Save
LevelMax - Clip Limiter: Limits the peak output voltage to just below
clipping for each channel. Press an Encoder knob to turn it OFF or ON.
Clip Limiter
OFF OFF
LevelMax- Peak Voltage Limiter: Limits the peak output voltage to a level
that you set, either OFF or 1 to 500 volts, for each channel. Press an Encoder to
turn on the Limiter. Once it's on, turn the Encoder to set the voltage. Additional
controls, such as attack and release, are available through System Architect.
Peak Voltage Limiter
OFF OFF
v
LevelMax - RMS Voltage Limiter: Limits the output rms voltage to an
amount that you set, either OFF or 1 to 500 volts, for each channel. Press the
Encoder to turn on the Limiter. Once it's on, turn the Encoder to set the voltage.
RMS Voltage Limiter
OFF OFF
v
Pink Noise Generator: Press an Encoder knob to turn on the generator. Its
level will read –100 dB. Adjust the noise level from –100 dB to +20 dB in 0.5 dB
steps by turning Encoder 1 or 2. To turn off the generator, press an Encoder knob
or go to another menu item.
Pink Noise Generator
OFF OFF
dB
Front Panel Blackout: This screen lets you black out the front panel display
unless you press a front-panel button or turn an Encoder. This feature turns
off the LCD backlight and all front panel LEDs except for the fault LEDs and
power-switch green LED. After blackout is enabled, an Encoder press/turn
will "reactivate" the display. If no button is pressed/turned for 5 seconds, the
display will return to blackout mode.
Front Panel Blackout
OFF
Exit: To exit the Advanced Menu and go to the Attenuation screen, press Menu/
Exit once.
page 19