Crown Audio I-Tech Series Off, OFF w, OFF dB, 12.0 dB, 21dBu, 131.227ms, 0.6042 ms

I-Tech Series Power Amplifiers

4 Advanced Operation

Peak Voltage Limiter: Limits the peak output voltage to a level that you set, either OFF or 0 to 255 volts. Press the 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 IQwic or System Architect.

Peak Voltage Limiter

OFF v 224

Average Power Limiter: Limits the output power to an amount that you set, from 10 watts to the maximum output power of the amplifier. Press the Encoder to turn on the Limiter. Once it’s on, turn the Encoder to set the power. Additional controls, such as nominal impedance, attack, and release, are available through IQwic or Sys- tem Architect.

Avg Power Limiter

OFF w 1050

Pink Noise Generator: The default setting is OFF. 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. The level can be adjusted only when this menu option is visible. To turn off the generator, press an Encoder knob or go to another menu item.

Pink Noise Generator

OFF dB -17.5

AES/EBU Input Trim: Sets the gain of the AES/EBU digital input signal. Turn an Encoder to change the gain.

AES/EBU Input Trim

12.0 dB 13.5

Input Source: For each channel, press the Encoder to select ana- log, digital, or automatic backup source. Options are:

Digital (DIG)

Analog (ANLG)

Digital with analog backup (A <– D) Digital with analog override (D <– A)

Digital with analog backup: The I-Tech is being fed a digital signal and an analog signal. The input is currently switched to the digital signal. If it fails, the I-Tech switches instantly to the analog signal.

Digital with analog override: The input is switched to the digital sig- nal, and no analog signal is applied. If an analog signal is sent, the I-Tech switches instantly to the analog signal. If the analog signal fails, the I-Tech switches to the digital signal after a delay set by the Hold Time slider in the Input Section of the IQwic Signal Path Page.

Input Source

DIG A D

Maximum Analog Input: Press an Encoder to select +21 dBu or +15 dBu. When set to +21 dBu, the maximum input level to the amplifier is +21 dBu. When set to +15 dBu, the maximum input level to the amplifier is +15 dBu. Note: Changing this value changes the range of sensitivities available to the amplifier.

For more information see the I-Tech Sensitivity Charts in the Appendix of the I-Tech Application Guide. It is available online at www.crownaudio.com/itech/pdf/137327.pdf.

Maximum Analog Input

21dBu

Exit: To exit the Advanced Menu and go to the Attenuation screen, press Menu/Exit once.

Coarse Signal Delay: Sets the coarse signal delay in each chan- nel. Twist each channel’s Encoder knob to vary the delay. The delay step size is speed sensitive.

Coarse Signal Delay in the LCD screen corresponds to Coarse Sig- nal Delay in IQwic > I-Tech control panel > Signal Path Tab > Delay block.

Coarse Signal Delay

131.227ms 130.894

Fine Signal Delay: Sets the fine signal delay in each channel. Twist each channel’s Encoder knob to vary the delay. The delay step size is speed sensitive.

Fine Signal Delay in the LCD screen corresponds to Fine Signal Delay in IQwic > I-Tech control panel > Signal Path Tab > Delay block.

Fine Signal Delay

0.6042 ms 0.7917

Output Polarity: Press each channel’s Encoder knob to toggle the output signal polarity between + and –.

Output Polarity in the LCD screen corresponds to the Polarity but- tons in IQwic > I-Tech control panel > Signal Path Tab > Output Sec- tion block.

Output Polarity

+ +

Operation Manual page 19