Crown Audio CTs 2-Channel - Manual (Page 45)

T O U R I N G
• 45
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SPECIFICATIONS
Performance
Frequency Response (at 1 watt, 20 Hz - 20 kHz):
±0.25dB.
Signal to Noise Ratio below rated full-bandwidth
power, A-weighted: > 105 dB.
Total Harmonic Distortion (THD) at full rated power:
< 0.35%.
Intermodulation Distortion (IMD) 60 Hz and 7 kHz at
4:1, from full rated output to –35 dB: < 0.35%.
Damping Factor (20 Hz to 100 Hz at 8 ohms): >
5000.
Crosstalk (below rated power, 20 Hz to 1 kHz):
> 80 dB.
Common Mode Rejection (CMR) (20 Hz to 1 kHz):
> 50 dB.
DC Output Offset (shorted input): < ± 3 mV.
Input Impedance (nominal): 20 kilohms balanced,
10 kilohms unbalanced.
Maximum Input Level: +15 dBu or +21 dBu, depend-
ing on input sensitivity.
Latency (analog, digital inputs): 1.13 mS analog,
1.81 mS digital (96 kHz).
A/D, D/A Converters: 24-bit 96 kHz Cirrus Logic.
Digital Input: AES/EBU, 24-bit, 32-96 kHz. Onboard
sample-rate converter.
Network: Onboard TCP/IQ and HiQnet, compatible
with standard 100 Mb Ethernet hardware.
DSP: 24-bit conversion with 32-bit, fl oating-point DSP
processing. Has 64 assignable fi lters with 9 different
fi lter types. Includes all-pass fi lters, over 2 seconds
of delay available per channel, and dual uncorrelated-
noise and sine-wave generators.
Load Supervision: Monitors the average impedance
on the output of the amplifi er. If the impedance falls
outside the specifi ed high/low limits, this function
alerts the user via the front panel display, and via
System Architect or IQwic™ software.
Error Reporting: Reports clip errors, thermal errors,
fault conditions and load monitoring errors for each
channel via the front panel display and via System
Architect or IQwic software when amp is on a net-
work.
Attenuators: Speed sensitive, continuously variable
rotary encoder, 0.5 dB steps, range 0 to –100 dB.
Load Impedance: (Note: Safe with all types of loads)
Stereo: 1/2/4/8/16 ohms.
Bridge Mono: 2/4/8 ohms.
Input Sensitivity (referenced to 8 ohm rated output):
Adjustable in 0.1V steps from 1.4V to 7.75V.
Voltage Gain (referenced to 8 ohm rated output):
I-T4000: 37.1 dB to 22.2 dB
I-T6000: 37.9 dB to 23.0 dB
I-T8000: 39.3 dB to 24.5 dB
Required AC Mains: Universal AC input, 100-240VAC,
50/60 Hz (±15%). Maximum AC mains voltage
277VAC.
AC Line Connector: Five cordsets supplied with
amplifi er (USA, UK, European, Australia, India)
.
Front Panel Controls and Indicators
Bridge Mode Indicator: Yellow LED illuminates when
the amplifi er is set to Bridge-Mono mode.
Ready Indicator: Green LED, one per channel,
illuminates when the channel is initialized and ready to
produce audio output. Indicator is off when the ampli-
fi er is in standby mode via the control software.
Signal Indicators: Three green LEDs per channel
indicate the amplifi er’s input and output signal levels.
Signal: input signal is above –40 dBu.
–20 dB: amplifi er output is 20 dB below clipping.
–10 dB: amplifi er output is 10 dB below clipping.
Clip Indicator: Red LED, one per channel, illuminates
when the channel’s output signal reaches the onset of
audible clipping. The Clip Indicator also will illuminate
during Thermal Level Control (TLC) limiting.
Thermal Indicator: Red LED, one per channel, illumi-
nates when the channel has shut down due to thermal
stress or overload.
Fault Indicator: Red LED, one per channel, fl ashes
when the amplifi er output channel has stopped
operating.
Data Indicator: Yellow LED indicates network data
activity. Data indicator fl ashes only when the ampli-
fi er is polled for data, or is polled to see whether it
is online
Power Indicator: Blue LED indicates amplifi er has
been turned on and AC power is available. The LED
will fl ash when the AC line voltage is 15% above or
below the nominal rated value.
AC Mains Present Indicator: Green indicator built
into power switch indicates AC power is present at the
power cord and the amplifi er circuit breaker is in the
“on” position.
LCD Control Screen and Controls: These let the user
adjust the amplifi er’s attenuation and muting, confi g-
ure the amp, set up and view error monitoring (such
as temperature and load supervision), and recall DSP
presets. The presets allow the user to quickly recon-
fi gure the amp for various applications.
LCD Control Screen: Integrated LCD with white
LED backlight, controls amplifi er setup and
operation.
Normal mode: Attenuation in 0.5 dB steps, Mute/
Unmute, Front Panel Lockout.
Basic Menu: LCD Contrast, CH1 Sensitivity, CH2
Sensitivity, Speaker Preset, Dual/Bridge mode,
Input Y.
Advanced Menu: Attenuator Limits, Attenuator
Link, Clip Limiter, Peak Voltage Limiter, Average
Power Limiter, Pink Noise Generator, AES/EBU
Input Trim, Input Source, Maximum Analog Input,
Meter Display Type.
Monitor Menu: Speaker Load, Thermal %, AC
Voltage, Operating Time, Firmware, Manufacturing
Info, Networking, Thermal Errors, Clip Errors, Low
Limit Load Errors, High Limit Load Errors, Line
Voltage Errors.
Menu/Exit Button: “Menu” enters the main menu.
“Exit” gets out of the Menu.
Next Button: Selects the next item in the Menu.
Prev Button: Selects the previous item in the
Menu.
Level Controls (Encoders): Speed-sensitive rotary
encoders, 0.5 dB steps, range 0 to –100 dB. These
two knobs affect the Channel-1 and Channel-2
output levels. They also select Menu items and
adjust parameter values that are displayed on the
LCD Control Screen.
Power Switch: Push-on/push-off switch with built-in
green AC mains present indicator.
Back Panel Controls, Indicators and
Connectors
Power Cord Connector: Standard 20 amp IEC inlet.
Voltage range is indicated above IEC inlet.
Reset Switch/Circuit Breaker: If the current draw of
the amplifi er exceeds safe limits, this breaker auto-
matically disconnects the power supply from the AC
mains. The switch resets the circuit breaker.
Output Connectors: Two high-current, 50A Neutrik
®
Speakon
®
NL4MLP (mates with NL4FC or NL4), one
per channel. Two pairs of high-current, 60A color-
coded 5-way binding posts (for banana plugs, spade
lugs or bare wire). Two male XLR passive analog loop
through. XLR active/re-clocked AES/EBU digital loop
through.
Analog Input Connectors: A 3-pin female XLR con-
nector for each channel.
Digital Input Connector: A 3-pin female XLR connec-
tor that accepts a digital signal in the AES/EBU format.
Network Connector: This Ethernet connector accepts
an RJ-45 connector for TCP/IQ or HiQnet networking.
Built into the connector is a yellow LINK ACT indica-
tor that shows network activity, and a green 100Mb
indicator that shows a 100Mb network connection.
Data Indicator: Yellow LED indicates network data
activity. Data indicator fl ashes only when the ampli-
fi er is polled for data, or is polled to see whether it is
online.
Preset Indicator: Yellow LED fl ashes to signal the
number of the current preset if active.
Construction
Cooling: Dual-zone, microprocessor controlled, con-
tinuously variable speed fans, front-to-back airfl ow.
Front Panel: Cast aluminum with integrated handles.
Dimensions: 19 in. (48.3 cm) W x 3.5 in. (8.9 cm) H x
16.2 in. (41.1 cm) D.
Weight: 28 lbs (12.7 kg) net, 36 lbs (16.3 kg) ship-
ping.
Included Accessories: Rear rack ears, rack screws,
operation manual, power cords, foam air fi lter.
Regulatory Certifications
Other Applications
T he Crown ® I-Tech Series offers amazing power, light weight and ease of use for touring sound and
installed sound applications. Onboard DSP provides a wide array of signal processing, greatly reduc-
ing the need for rack components and rack wiring. Onboard DSP features 24-bit, 96 kHz A/D and D/A
converters. All models are compatible with the HiQnet Network and TCP/IQ networking. Digital audio and
HiQnet/IQ control signals connect to the amp via a single CobraNet cable in optional new models, coming
soon. Push-button DSP presets simplify the setup for various loudspeaker arrays. The Global Power Supply
works anywhere in the world, and offers PFC (Power Factor Correction). I-Tech amplifiers have the high-
est output voltage in the industry (200V peak), which provides clean transient peaks. The 3rd-generation
patented Class I (BCA
® ) circuitry couples power efficiently to the load and allows low AC current drain. A
front-panel control screen shows advanced diagnostics and status information.
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