Crown I-T12000 HD, Руководство по эксплуатации

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Operation Manual
I-Tech HD Series Power Amplifiers
page 40
I-Tech HD Series Power Amplifiers
Operation Manual page 41
5 Troubleshooting
CONDITION: No sound, even though
the amp has power. Power LED is on
with out flashing and the amp is receiving an input
sig nal. Signal indicator is on or flashing.
POSSIBLE REASON
• Speakers not connected.
• Open circuit due to speaker failure.
• Ready LED is off. Channel has been set to
standby mode via the software.
• Amplifier is in blackout mode. Press or
turn an Encoder to reactivate the LCD
display.
CONDITION: No input signal. Signal
indicator is not flashing even though audio is
applied, and the channel is ready.
POSSIBLE REASON
• Input signal level is very low.
• Another source is selected or routed.
CONDITION: Data indicator not flash­
ing, even though host computer
software is active.
POSSIBLE REASON:
• Cable between computer and amplifier is bro ken
or not connected.
Note: Data indicator flashes only when the amplifier
is polled for data, or is polled to see whether it is
online.
CONDITION: Yellow LINK ACTIVITY indicator in
Ethernet connector does not illuminate or flash.
POSSIBLE REASON:
• Ethernet link is broken.
CONDITION: Computer does not communicate with the
network devices.
POSSIBLE REASON:
• Incorrect wiring. See Section 3.5 letter O on network wiring.
• IP Addressing is not done correctly. Use the Network Troubleshooting
Wizard in System Architect.
• There is a short on the amplifier output. First
disconnect your speakers from the affected
channel(s) one by one to determine if one of
the loads is shorted.
CONDITION: COND indicator is off.
POSSIBLE REASON:
• There is only one conductor allowed per network system. This
indicator is lit only when the amplifier is the conductor.
• Amplifier is in blackout mode. Press or turn an Encoder to
reactivate the LCD display.
Minimum guaranteed Power I-T5000HD I-T9000HD I-T12000HD
20 Hz - 20 kHz with 0.35% THD
Stereo, 2 ohms (per ch.)
Stereo, 4 ohms (per ch.)
Stereo, 8 ohms (per ch.)
Bridge mono, 4 ohms
Bridge mono, 8 ohms
1800W
2000W
1250W
3600W
4000W
2500W
3000W
1500W
5000W
6000W
3500W
4000W
2100W
7000W
8000W
Performance I-T5000HD I-T9000HD I-T12000HD
Input Sensitivity (volts RMS) for rated output Adjustable in 0.1V steps from
1.28V to 8V
Adjustable in 0.1V steps from
1.28V to 8V
Adjustable in 0.1V steps from
1.28V to 8V
Voltage Gain for full rated power at 8 ohms 37.1 dB to 22.2 dB 37.9 dB to 23.0 dB 40.1 dB to 24.5 dB
Frequency Response (at 1 watt, 20Hz - 20 kHz) ± 0.25 dB ± 0.25 dB ± 0.25 dB
Signal to Noise Ratio below rated full-bandwidth power, A-weighted > 108 dB > 108 dB > 108 dB
Total Harmonic Distortion (THD) at full rated power at 1 kHz < 0.1% < 0.1% < 0.1%
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at 4:1,
from full rated output to –35 dB
< 0.35% < 0.35% < 0.35%
Maximum Input Level +15 dBu or +21 dBu, depending on setting of
maximum input level
+15 dBu or +21 dBu,
depending on setting of maximum input level
+15 dBu or +21 dBu,
depending on setting of maximum input level
Latency 1.16 mS at 48 kHz, 529 µS at 96 kHz 1.16 mS at 48 kHz, 529 µS at 96 kHz 1.16 mS at 48 kHz, 529 µS at 96 kHz
A/D, D/A Converters 24-bit 96 kHz Cirrus Logic 24-bit 96 kHz Cirrus Logic 24-bit 96 kHz Cirrus Logic
Digital Input AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
AES/EBU, 24-bit, 32-96 kHz.
Onboard sample rate converter.
Network Onboard HiQnet and TCP/IQ, compatible with
standard 100Mb Ethernet hardware
Onboard HiQnet and TCP/IQ, compatible with
standard 100Mb Ethernet hardware
Onboard HiQnet and TCP/IQ, compatible with
standard 100Mb Ethernet hardware
DSP 24-bit conversion with 32-bit, floating-
point DSP processing
24-bit conversion with 32-bit, floating-
point DSP processing
24-bit conversion with 32-bit, floating-
point DSP processing
Attenuators Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB.
Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB
Speed-sensitive rotary encoders, 0.5 dB
steps, range 0 to –100 dB
6 Specifications