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I-Tech 12000HD (made in USA)

Two-channel, 2x4500W @ 4Ω Power Amplifier

Inside and out, the I-Tech HD is one of the most technologically advanced professional touring amplifiers on the market today. Building on the decades of innovation, invention, and insight Crown is known for, the I-Tech HD features five new patents – three on the power supply alone – giving you an amp that goes well beyond the expected.  At the heart of the new I-Tech HD is the BSS OMNIDRIVEHD™ processing engine. Four times faster than its predecessor and featuring Linear Phase FIR filters and LevelMAX™ limiters, OMNIDRIVEHD provides unmatched clarity and sonically pure signal processing.

 

Quattrocanali 4804 DSP (made in Italy)

Description

Overview chart

Quattrocanali 4804 offers the traditionally amazing sound quality and reliability of all Powersoft products.

The patented SRM (Smart Rails Management) technology allows to maximize the efficiency of the system and drastically reduce power consumption in any load and usage condition. Quattrocanali features the lowest thermal dissipation in the industry, reducing the need for external cooling devices.

Quattrocanali is designed to operate with lo-Z (from 2 Ω) and 70V/100V distributed lines or any mix of the two. 

DSP+D versions of the Quattrocanali grant in-depth control and monitoring via Armonìa, tailoring the sound and managing the system can be done by a remote, decentralized location.

This Amplifier Platform can also be trusted in mission critical applications, such as fire alarm systems, thanks to the cleverly engineered power supply that allows reliable operation even when connected to a UPS.

Power supply

• Powersoft legendary universal switch mode power supply up to 400VAC tolerant with Power Factor Correction
• Low Inrush Limiting reduces AC inrush current, removing the need for expensive power sequencers
• Detachable AC mains cable with IEC C19/22.2 (16A for EU, 20 A for USA) socket

Protections
Fully protected circuit design with:

• Ac protection: shut down power supply when AC mains voltage is outside operating range
• Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
• DC protection: protects against infrasonic signal at the outputs
• VHF protections: protects the loudspeakers against non-audible, strong, non-musical high-frequency signals
• Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
• Long-term limiter: protects the loudspeaker against steady long-term rms (non-audio) signals reducing maximum output
• Thermal protection: output stages operating temperature up to 80 °C (176 °F)
• Temperature controlled continuous variable speed fan, front to back airflow
• Temperature forecast with LCD traced historical behavior

General

• Fixed frequency switchmode output stage for high-grade sound accuracy
• Compact size - all models only 1 RU for reduced rack cost and space
• Lightweight - for easier racking and shipping: 7 kg (15.4 lbs)
• Standard Phoenix connectors: analog audio outputs, aux supply, alarms and GPIO
• Remotely switchable double input (main and aux) per channel

Settings

• Built-in defeatable clip limiters for each channel
• Digital gain-attenuator control
• Defeatable gate selection for each channel
• User selectable gain/sensitivity
• User selectable maximum output power for each channel
• User selectable maximum mains current draw
• Lockable set-up with user selectable access key code
• Built-in remote control via the RS-485 interface provides full diagnostic, operational setting, and system monitoring

Monitoring

• Hardware monitor available for fast local diagnostic
• Load impedance measurement for each channel
• Output power measurements for each channel
• Mains voltage and current measurements
• Downloadable log file of functional fault events with time-related trace

Remote management

• Control and monitoring through ArmoníaPlus
• Dedicated Web App

Remote Control & Monitoring

• Via Software:
• • Attenuation (from 0 dB to 26 dB)
  • Max output voltage
  • Output and gain reduction metering
  • Diagnostics (temperature, fans, …)
• Via Hardware:
• • Attenuation (from 0 dB to 26 dB)
  • High Pass Filter (35 Hz, 70 Hz)
  • LoZ/HiZ/70V/100V output selection
  • Gain (from 26 dB to 35 dB) 

General
Number of channels	4
Output power	Single channel mode				Distributed line*		Bridge mode
	2 Ω	4 Ω	8 Ω		70V	100V	4 Ω	8 Ω
	1500 W	1200 W	1200 W		1200 W	1200 W	3000W	2400W
Max output voltage / current	140 Vpeak / 45 Apeak
AC Main Power
Power supply	Universal, regulated switch mode with PFC (Power Factor Correction)
Nominal power requirement	100-240 V ±10%, 50-60 Hz
Operating voltage	90 V - 264 V
Power consuption**	115 V					230 V
Idle	32.3 W		0.45 A			32.4 W		0.33 A
1/8 of max output power @ 4 Ω	850 W		9.16 A			826.8 W		5.02 A
1/4 of max output power @ 4 Ω	1718 W		15.96 A			1651 W		9.41 A
Thermal
Operating temperature range		-10° - 45° C - 14° - 113° F
Thermal dissipation**	115 V					230 V
Idle	110.3 BTU/h		27.8 kcal/h			110.6 BTU/h		27.9 kcal/h
1/8 of max output power @ 4 Ω	853.5 BTU/h		215.1 kcal/h			768.1 BTU/h		193.6 kcal/h
1/4 of max output power @ 4 Ω	1768.5 BTU/h		445.7 kcal/h			1539.8 BTU/h		388.0 kcal/h
AUDIO
Frequency response	20 Hz - 20 kHz (±0.5 dB) @ 1 W, 8 Ω
S/N ratio	> 110 dB (20 Hz - 20 kHz, A weighted)
Crosstalk separation	> 70 dB @ 1kHz
THD+N	0.2% from 0.1 W to full power (typically < 0.05%)
IMD	< 0.1% from 0.1 W to full power (typically < 0.05%)
Input impedance	20 kΩ balanced
Slew rate	> 50 V/μs @ 8Ω, input filter bypassed
Damping factor	> 500 @ 20-100 Hz
DSP
AD Converter	24 Bit Tandem™ @ 48 kHz 125 dB-A Dynamic Range - 0.005 % THD+N
DA Converter	24 Bit Tandem™ @ 48 kHz 117 dB-A Dynamic Range - 0.003 % THD+N
Internal precision	32 bit floating point
Memory/presets	128 MB (RAM) plus 512 MB fash for presets /
Latency	2.5 ms fixed latency architecture
Input equalizer	Raised-cosine, custom FiR, parametric iiR: peaking, hi/lo-shelving, all-pass, band-pass, band-stop, hi/lo-pass
Crossover	linear phase (FIR), Butterworth, Linkwitz-Riley, Bessel: 6 dB/oct to 48 dB/oct (IIR)
Delay	2 s (input) + 100 ms (output) for time alignment
Input EQ
Output EQ
Limiters	TruePower™, RMS voltage, RMS current, Peak limiter
Damping control	Active DampingControl™ and Liveimpedance™ measurement
Front panel
Connectors
AC main	1 x IEC C20 connector - 20 A max (region-specific power cord provided)
Audio signal input	1 x 12 pin Phoenix MC 1.5/12-ST-3.81 - Signal input – MAIN
Alarm	1 x 12 pin Phoenix MC 1.5/12-ST-3.81 - Alarm connector 1 x 4 pin Phoenix MC 1.5/4-ST-3.81 - Alarm connector
Network/data	1 x Rj45 socket - RS485 data connection (non-DSP version) 1 x Rj45 socket - DANTE®
Construction
Dimensions (L x H x W)	483 mm x 44.45 mm x 360 mm (19.0 in x 1.8 in x 14.2 in)
Weight	7 kg (15.4 lb)

 

 

 

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