CROWN IT4000 Details
The world has seen many good amplifiers, but few achieve greatness. What sets these elite few apart from all the others? The answer is simple: A careful synthesis of unrivaled sonic performance combined with rock-solid dependability.
While the definition of a great amplifier may be simple, delivering on those requirements is not. This is what has always set Crown amplifiers apart from the others: Crown delivers.
From the slightest nuances in the tremolo of a flute to the chest pounding bass of a rock ’n’ roll kick drum to the harmonic rich vocals of a jazz singer, Crown delivers. Crown amplifiers are renowned for their ability to accurately amplify anything audio—with unmatched power and accuracy—night after night without fail.
For decades, the formula for creating great amplifiers has been the same at Crown: An insightful combination of genetics, breakthrough technologies, craftsmanship, and passion. This formula, proven over and over, has produced a lineage of great amplifiers: DC-300, PSA-2, Micro-Tech®, Macro-Tech®, Studio Reference™, K, and CTs: Each amplifier great in its time, and each raising the standard for high performance. Once again, this formula for greatness has delivered on its promise: I-Tech, the world's next great amplifier, and the pinnacle of Crown's 50-year history of innovation.
Anatomy of I-Tech
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1 Class-I - Interleave Technology
I-Tech's patented Interleave switch-mode design delivers a solid combination of high output power and a smaller, lighter weight package. Officially designated “Class-I,” this break-through technology provides a clear advantage over conventional amplifier (Class-D) models by providing lower distortion, higher voltage, higher power, and greater reliability.
2 Industry's Highest Output Voltage
Today's high-performance loudspeakers need additional voltage drive to really come alive. I-Tech features the highest output-voltage capability of any professional amplifier.
3 Regulated Switch-Mode Power Supply
An all-new, ground-breaking power supply forms the heart of the I-Tech Series. Crown's regulated switch-mode power supply delivers full power regardless of mains voltage: from 120 to 277 volts, and from 50 to 60 Hz.
4 PFC (Power Factor Correction)
Crown's innovative PFC technology allows I-Tech to draw current from the mains in a more controlled and efficient way than non-PFC amplifiers, providing massive amounts of power from a single 20 amp breaker.
5 Digital Audio Inputs
(AES/EBU - CobraNetTM)
I-Tech amplifiers feature digital audio inputs for exceptional audio quality. With AES/EBU inputs (standard) or optional CobraNet version, I-Tech provides your choice of today's most widely accepted digital audio formats.
6 Light Weight
I-Tech packs a lot of power in a small but rugged, 2U package. Weighing in at less than 28 lbs. (12.7 kg), I-Tech delivers unmatched power for its weight class, far outpacing the competition in watts/pound.
Channel Indicators
For each channel, a column of LEDs indicate a full range of amplifier diagnostics and information, including Fault, Thermal, Ready, Clip, Signal Presence and Signal Level.
Intelligent LCD Screen and Controls
Lets you adjust the amplifier's attenuation and muting, configure the amp, recall DSP presets, and set up and view error monitoring. The presets allow you to quickly reconfigure the amp for various applications.
Indicators
Power, Data and Bridge Mode.
Power Switch
Glows green when AC power is present at the power cord.
AC Mains Circuit Breaker
Offers extra protection for the amplifier.
Analog Inputs Section
• Balanced Analog XLR Inputs.
• Balanced Analog XLR Daisy-chain Outputs.
• Input Ground Lift Switch.
Digital Inputs Section
• AES/EBU Digital Input XLR Connector.
• Active Link/Out Connector.
Networking Section
Accepts a connector from a TCP/IQ network cable.
• LINK ACT indicator shows network activity.
• 100 Mb indicator shows a 100 Mb network connection.
• Preset indicator blinks to indicate active preset; count flashes to determine number.
• IQ Data LED shows IQ link activity.
Outputs Section
• 4-Pole Speakon® Output Connectors: Accept 2-pole or 4-pole Speakon connectors.
• 5-Way Binding Post Output Jacks: Accept banana plugs, spade lugs or bare wire.
CROWN IT4000 Specs
Power Output
|
Stereo |
Mono |
8 Ohm |
4 Ohm |
2 Ohm |
8 Ohm |
4 Ohm |
|
|
|
I-T8000 |
2100W |
4000W |
3500W |
8000W |
7000W |
I-T6000 |
1500W |
3000W |
2500W |
6000W |
5000W |
I-T4000 |
1250W |
2000W |
1800W |
4000W |
3600W |
|
|
|
|
|
|
Guaranteed minimum power output per channel, 20 Hz to 20 kHz, <0.35% true THD, both channels driven. Rated power not part-tolerance dependent. |
Performance
Guaranteed Minimum Power:
See power grid.
Frequency Response (at 1 watt, 20 Hz - 20 kHz): ±0.25dB.
Signal to Noise Ratio below rated 8-ohm power, A-weighted:
>105 dB
Total Harmonic Distortion (THD) at full rated power: < 0.35%.
Damping Factor (20 Hz to 100 Hz):
> 5000.
Common Mode Rejection (CMR) (20 Hz to 1 kHz): > 50 dB.
DC Output Offset: < ±3 mV.
Input Impedance (nominal):
20 kilohms balanced, 10 kilohms unbalanced.
Maximum Input Level: +15 dBu or +22 dBu, depending 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, 16-24 bit, 32-48 kHz. Onboard sample rate converter. Optional CobraNet input coming soon.
Network: Onboard TCP/IQ, compatible with standard 100-Mb Ethernet hardware.
DSP: 24-bit conversion with 32-bit, floating-point DSP processing. Bypass mode available. Has 64
assignable filters with 9 different filter types. Includes all-pass filters, 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 amplifier. If the impedance falls outside the specified high/low limits, this function alerts the user via the front panel display, and via the IQwic software when amp is on an IQ Network.
Error Reporting: Reports clip errors, thermal errors, fault conditions and load monitoring errors for each channel via the front panel display and via IQwic software when amp is on an IQ Network.
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: Adjustable in 0.1V steps from 1.4V to 9.7V.
Voltage Gain (referenced to 8 ohm rated output):
I-T4000: 37.0 dB to 20.3 dB
I-T6000: 37.9 dB tp 21.0 dB
I-T8000: 39.3 dB to 22.5 dB
Required AC Mains: Universal AC input, 100-240 VAC, 50/60 Hz (±15%).
Maximum AC mains voltage: 277 VAC.
AC Line Connector: Five cordsets supplied with amplifier (USA, UK, Europe, Australia, India).
Front Panel Controls and Indicators
Bridge Mode Indicator: Yellow LED
illuminates when the amplifier 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 amplifier is in standby mode via the IQ system.
Signal Indicators: Three green LEDs per channel indicate the amplifier's input and output signal levels.
Signal: Input signal is above –40 dBu.
–20 dB: amplifier output is 20 dB below clipping.
–10 dB: amplifier 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.
Thermal Indicator: Red LED, one per channel, illuminates when the channel has shut down, or is very near shutting down, due to thermal stress or overload. Fault Indicator: Red LED, one per channel, flashes when the amplifier output channel has stopped operating.
Data Indicator: Yellow LED indicates IQ Network data activity
Power Indicator: Blue LED indicates amplifier has been turned on and AC power is available.
AC Mains Present Indicator: Green indicator built into power switch indicates AC power is present at the power cord and the amplifier circuit breaker is in the "on" position.
Glowing Blue Screen and Controls: These let the user adjust the amplifier's attenuation and muting, configure the amp, set up error monitoring (such as temperature and load supervision), and recall DSP presets. The presets allow the user to quickly reconfigure the amp for various applications.
LCD Control Screen: Integrated LCD with white LED backlight, controls amplifier 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 Features 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, Amplifier Label Edit, CH1 Label Edit, CH2 Label Edit.
MENU/EXIT Button: “Menu” enters the Menu screen. “Exit” leaves the Menu.
NEXT Button: Selects the next item in the Menu.
PREV Button: Selects the previous item in the Menu.
Level Controls (encoders):
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.
Back Panel Controls, Indicators and Connectors
Power Cord Connector: Standard 20 amp IEC inlet.
Switch/Circuit Breaker: Resets the circuit breaker that protects the power supply.
Output Connectors: Two high-current, 50A Neutrik® Speakon® NL4MLP (mates with NL4FC or NLT4FX), 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 connector for each channel.
Digital Input Connector: A 3-pin female XLR connector that accepts a digital signal in the AES/EBU format.
Ethernet Connector: This connector accepts an RJ45 connector for IQ TCP/IQ networking and optional CobraNet transport from a standard network cable. Built into the connector is a yellow LINK ACT indicator that shows network activity, and a green 100 Mb indicator that shows a 100 Mb network connection.
Data Indicator: Yellow LED indicates IQ Network data activity.
Preset Indicator: Yellow LED indicates that a preset is in use.
Construction
Cooling: Dual-zone, microprocessor controlled, continuously variable speed fans, front-to-back airflow.
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) shipping.
Included Accessories: Rear rack ears with integral EZ-Rack pin, rack screws, operation manual, power cords, foam air filter.
Crown IT8000 ITech Amp
