CROWN IT 4X3500HDS POWER AMPLIFIER 4x3500W 4Ω

The I-Tech 4x3500HD amplifier is the industry's first high-powered tour sound amplifier featuring four inputs, Analog, AES3, and CobraNetTM, fully routable to any one of 4 outputs.  Each channel features a complete compliment of OmniDriveHDTM Processing, including the acclaimed LevelMAXTM Limiter Suite, and support for linear phase FIR filters as used in the latest JBL V5 loudspeaker tunings.  Combine that with Crown's patented Class-I technology delivering uncompromising power output across all four channels, and it's easy to see why the I-Tech 4x3500HD is the new flagship tour sound amplifier from Crown.

Model    CT475
Product Type    Amplifier
Channels    4
Sensitivity    1.4V
Rated Power Output    75W per Channel into 8 ohms
Signal to Noise Ratio (below rated power 20Hz to 20kHz, A-Weighted    110dB
Total Harmonic Distortion (THD) (full rated power, 20Hz - 20kHz)    Intermodular Distortion (from 0dB down to -40dB)    Frequency Response (at 1W into 4/8 ohms)    ± 0.5dB
Crosstalk (below rated power 20Hz to 1kHz)    > 70dB
Common Mode Rejection (20Hz to 1kHz)    > 55dB, typically > 70dB
Dimension (H x W x D)    1.75" x 19" x 14.25“
Weight    10 lbs (4.5 kg)

High-tech in professional amplification!

The fP 2400Q is a lightweight and space-saving four-channel power amplifier, ideal for
use in high quality touring sound systems as well as in demanding permanent installations.
The fP 2400Q offers a diverse choice of applications, such as: multi-channel monitor
systems, four-channel reproduction, and compact amplification in active 2-, 3-, and 4-way
systems.
The fP 2400Q makes possibile the bridge connection of one or two of the two pairs of
channels (channel A and B and/or channel C and D). It also features Lab.gruppen?s unique
power matching solution, the MLS switch, which offers endless combinations for solving
most of the problems related to varying impedances and maximum power capacities of
loudspeakers. The latest semiconductor technology is utilized in the new ferrite Power (fP)
amplifiers.
This, together with Lab.gruppen?s proprietary copper cooling system, Intercooler?, enhances
the 2 ohms capacity. Two easily accessible dust filters on the front ensure a clean front-to-rear
airflow. Additionally, a new Bi-phase wiring scheme also increases the capacity of the switch
mode power supply. This extends the power bandwidth in the low end.

Key Features:
4 x 370 watts @ 8 ?
4 x 380 watts @ 4 ?
4 x 500 watts @ 2 ?
(Measured just below clip level, with all 4 channels driven)
Light weight and compact: only 8.6 kg (19lbs), 2U high
MLS? Switch: Lab.gruppen?s unique power matching for different loads

New Features:
Replaces the LAB 1200C
Easily accessible dust filters
Improved low-end power bandwidth
Extruded front panel for increased stability

Besides the traditionally superb Lab.gruppen sonic performance, there is a full line of features
to make the fP family functional in all situations from installation to high performance live
sound systems:

Regulated switch mode power supply
Today there are many lightweight, switch-mode amplifiers in the market. However, the unique
Lab.gruppen switch-mode power supply technology offers a number of essential advantages
that make it superior to other and seemingly similar power supply designs. The most important
features are the regulated power supply and the extreme power efficiency. The regulated power
supply easily deals with a very high variation in the AC mains voltage: it can drop by up to 20%
below its nominal level - e.g. to 180 V instead of 230 V ? without any problem. Perhaps even
greater benefits result from the extreme efficiency of Lab.gruppen amplifiers: only a fraction of the
energy from the AC mains is turned into heat.
A regulated power supply also presents some other sonic advantages, such as better cone control
and the same fast response as a conventional power supply.

Sophisticated protection circuitry, combining:
ALS? short circuit protection; the Adaptive Limiting System permits very high peak currents, but
keeps the amplifier within the Safe Operation Area
DC protection; protects against infrasonic signals
VHF protection; protects the loudspeakers against strong very high frequency non-musical signals
above the audible range
Thermal protection; prevents the amplifier from being overheated. The protection indicators on the front
panel are switched on, as a warning, before the protection process is initiated
AC protection; shuts down the power supply if the line voltage is outside the operating voltage
Clip limiter; prevents severely clipped waveforms from reaching the loudspeakers, whilst maintaining
full peak power.

mplifier Gain 32 dB (Lo-Z), 33 dB (70V), 36 dB (100V)
Analog Inputs 4, electronically balanced, Phoenix-type
Audio Network No
CAN Bus Interface Yes (With Optional RCM-810 Card)
Continuous Rated Power
(1 kHz, THD 1%) 100v 500 Watts
Continuous Rated Power
(1 kHz, THD 1%) 2Ω 500 Watts
Continuous Rated Power
(1 kHz, THD 1%) 4Ω 500 Watts
Continuous Rated Power
(1 kHz, THD 1%) 70v 500 Watts
Continuous Rated Power
(1 kHz, THD 1%) 8Ω 250 Watts
Continuous Rated Power
(20-20 kHz, THD Continuous Rated Power
(20-20 kHz, THD Continuous Rated Power
(20-20 kHz, THD Continuous Rated Power
(20-20 kHz, THD Cooling Front-to-Rear, continuously variable fans
DIM 30 0.02 %
Electronics Type Amplifier
Frequency Response 15 Hz-30 kHz
Input Impedance (Balanced) 20 kΩ
Input Sensitivity 0 dBu (.775V)-2 Ω, +3 dBu (1.1V)-4/8 Ω, +6 dBu (1.55) 70V/100V
Intermodulation Distortion (SMPTE) 0.05 %
Mains Voltage 220 - 240 V, 50 - 60 Hz or 120 V, 50 - 60 Hz, 50 - 60 Hz
Maximum Bridged Output 4Ω 1000 Watts
Maximum Bridged Output 8Ω 1000 Watts
Network Control (IRIS-Net) Optional
Slew Rate 28 V/µs
Total Harmonic Distortion 0.05 %
Variable Load Drive (VLD) Yes
Height 2RU 88.1 mm (3.47“)
Width 481 mm (18.94“)
Depth 421.5 mm (16.59“)
Weight Net 11.1 kg (24.47 lbs)