Powersoft Quatrocanali 4804 DSP+D

Features

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) 

Specifications

General    

• Number of channels: 4
• Output power
  • Single channel mode    
    • 2Ω: 1500W
    • 4Ω: 1200W
    • 8Ω: 1200W
       
  • Distributed line*    
    • 70V: 1200W
    • 100V: 1200W
       
  • Bridge mode
    • 4Ω: 3000W
    • 8Ω: 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: 90V - 264V
• Power consuption (230V)
• Idle: 32.4 W    0.33 A
• 1/8 of max output power@4Ω: 826.8W 5.02A
• 1/4 of max output power@4Ω: 1651W 9.41A

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)