Powersoft Ottocanali 12k4 8-Channel Power Amplifier

Power supply

• Switch mode power supply up to 400VAC 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 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, by 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

General

• Fixed frequency switch-mode output stage for high grade sound accuracy
• All models 2 RU for reduced rack cost and space
• Light weight - 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)

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

• NC/NO contacts per channel for alarm notifications
• Remote ON/OFF switch
• Remote AUX / MAIN inputs switch
• PWS OUT connector providing 24VDC

• GENERAL
  Output power per Channel
  Output power per Channel	1000 W @ 2 Ω	1500 W @ 4 Ω	850 W @ 8 Ω
  Bridge mode	2000 W @ 4 Ω	3000 W @ 8 Ω
  Max output voltage / current
  Max unclipped voltage @8 Ω			116.6 Vpeak
  Current			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 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: 2075 W – 18.5 A	230 V: 2115 W – 9.7 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: 2141 BTU/h – 540 kcal/h	230 V: 1937 BTU/h – 488 kcal/h
  1/4 of max output power @ 4 Ω		115 V: 4283 BTU/h – 1080 kcal/h	230 V: 3874 BTU/h – 977 kcal/h