Description

Powersoft Amplifiers Ottocanali 4K4

Overview

The Ottocanali 4K4 is a flexible and reliable 8-channel power amplifier with up to a total of 4,000 W at 4Ω, ideal for multi-zone applications in small to mid-scale installs. Ottocanali 4K4 supports any combination of lo-Z loudspeakers, mono-bridgeable channel pairs and 70V/100V Hi-Z distributed lines with no need for output step-up transformers.

The Ottocanali 4K4 features switchable main/aux signal inputs and offers a wide range of system control, alarms, GPI/O, and monitoring functions as well as sound shaping options.

The Ottocanali 4K4 implements universal switch mode power supplies with PFC and patented SRM (Smart Rails Management) technology maximizing reliability & efficiency and reducing power consumption.

Powersoft’s legendary efficiency saves valuable energy, keeping both operational cost and ‘carbon footprint’ at a minimum: the Ottocanali 4K4 shines with outstandingly low power consumption and heat dissipation. This dramatically reduces costs from the AC mains supply and air conditioning/cooling systems – not to mention the benefits to the environment for a greener planet.

MyPowersoft services are available for this product.

Features

Power supply

Redundant universal switch mode power supply up to 400V_AC tolerant with Power Factor Correction
Patented output filter with ripple cancellation network
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 the USA) socket

Protections

Fully protected circuit design with:

Ac protection: shut down the power supply when AC mains voltage is outside the 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 nonaudible, 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 (nonaudio) signals, by reducing the maximum output
Thermal protection: output stages operating temperature up to 80 °C (176 °F)
Temperature-controlled continuous variable speed fan, front-to-back airflow

General

Fixed frequency switchmode output stage for high-grade sound accuracy
All models 2 RU for reduced rack cost and space
Lightweight – for easier racking and shipping: 14 kg / 30.8 lbs
Standard Phoenix connectors: analog and digital input, audio outputs, aux supply, alarms, and GPIO
Remotely switchable double input (main and aux) per channel

Loudspeaker system configuration

Direct drive either low impedance loads or 70V / 100V Hi-Z distributed lines
Switchable 35Hz / 70Hz high pass filter per channel
Mixed configuration with Lo-Z/Hi-Z systems possible
Bridged mode, with low impedance, per channel pair

Alarms and GPIO

General Purpose Input/Output alarm interfaces:
- dangerous DC in the output power signal
- thermal stress
Configurable alarm contact NC/NO per channel
Remote AUX input / MAIN input switch
Remote ON/OFF switch
PWS OUT connector providing up to 24VDC

Specifications

GENERAL
Output power per channel
Output power per channel	450 W @ 2 Ω	500 W @ 4 Ω	250 W @ 8 Ω
Bridge mode	900 W @ 4 Ω	1000 W @ 8 Ω
Max output voltage / current
Max unclipped output voltage @8 Ω			65 Vpeak
Current			15 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 consumption/current draw
Idle		115 V: 47 W – 0.75 A	230 V: 50 W – 0.7 A
1/8 of max output power @ 4 Ω		115 V: 740 W – 6.6 A	230 V: 750 W – 3.9 A
THERMAL
Operating temperature range			0° – 35° C – 32° – 95° F
Thermal dissipation*
Idle		115 V: 160 BTU/h – 41 kcal/h	230 V: 170 BTU/h – 43 kcal/h
1/8 of max output power @ 4 Ω		115 V: 801 BTU/h – 202 kcal/h	230 V: 839 BTU/h – 211 kcal/h
1/4 of max output power @ 4 Ω		115 V: 1340 BTU/h – 338 kcal/h	230 V: 1340 BTU/h – 338 kcal/h