Powersoft Duecanali 3904 DSP+AESOP

Duecanali 3904
۲ Channel Power Amplifier 1950W Per Ch @ 4ohm 1U 
۲ models available (3904 & 5204) from 1950w per channel to 2600w per channel.  Optional DSP & Ethernet Control Available.
NOTE:  Stock photo used to represent this model.  Appearance will be similar, but may vary.

The Powersoft Duecanali 3904 is a professional power amplifier designed to meet the most stringent requirements of professional users in professional fixed installations.

Designed by Powersoft R&D team the Duecanali 3904 is exclusively built in Italy with internal components selected for premium quality and proven durability.

Each modular subassembly is pre-tested, and the assembled Duecanali 3904 receives a rigorous 48 hours burn-in before through final check-out on precision test equipment for total quality control.

The Duecanali 3904 incorporates the legendary patented Powersoft universal switching mode power supply up to 400VAC tolerant with Power Factor Correction providing users with worldwide AC acceptance and low consumption.

Powersoft bridgeable switch mode fixed frequency class D patented outputs provide high quality sound, excellent damping factor and cooler circuits for stable performances over time and longer amplifier life.

LCD display with lockable user menu for easy control of all amplifier settings.
Auxiliary inputs, triggered by 24V command input for alarm and pre-recorded emergency messages. Output relay for each amplifier channel for reporting single channel fault conditions.

Optional DSP provides full high quality on board sound processing. Sensing and communication board, standard on RS485 bus, Ethernet optional, provides full control and monitoring through Armonía Pro Audio Suite™, compatible with all other Powersoft K, M, D, Q and Ottocanali Series amplifiers. 

Interface available for MediaMatrixCrestronAMX, and Q-Sys control and monitoring systems.

The Duecanali 3904 is able to drive 70V/100V lines without external transformers. Internal preset with HP filter and voltage limiter is required.

  • Powersoft legendary universal switch mode power supply up to 400VAC tolerant with Power Factor Correction
  • Fixed frequency switch mode bridgeable output
  • Patented output filter with ripple cancellation network
  • LCD interactive display and front panel meters
  • Lockable user menu for setting max output voltage, max mains current draw, digital output attenuation, gain selection, gate selection, limiter and real time monitoring of: load impedance, AC mains voltage, output voltage, internal temperature with downloadable log file of all functional fault events with time related trace
  • Balanced, 3 pin Phoenix© type, analog and digital main and auxiliary inputs, outputs on 2 paralleled
  • Phoenix© type 2 pin connectors
  • Fully protected circuit design with:
    Optional DSP, with fixed latency of 2 ms, with up to 48dB/oct IIR and FIR cross-over filters, up to 16 eq filters per output channel, up to 8s of total delay, peak limiter and true power limiter, patented damping factor and cable resistance compensation network

    • AC protection: shut down power supply when
    • AC mains voltage is outside operating range
    • Turn on/off muting: for 4s at turn on and soon after turn off amplifiers outputs are muted
    • 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 very high frequency signals
    • Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits
    • Thermal protection: when output rails reach 75°C (167°F) amplifier will reduce max output to help cooling while when rails reach 85°C (185°F) outputs will be muted
    • Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
  • Optional Ethernet board travels, on the same CAT5 cable, control and up to 2 AES3 digital audio channels with full redundant ring topology
  • Temperature controlled continuous variable speed fan, front to back airflow
  • Smart card reader for preset load/save and firmware upgrades
  • Detachable AC mains cable with IEC C19/22.2 (16A for EU, 20 A for USA) socket
  • Modular construction
  • Control and monitoring* through Armonía Pro Audio Suite™
  • Interface available* for MediaMatrixCrestronAMX, and Q-Sys control and monitoring systems.
Number of channels ۲        
Output power ¹          
    Low impedance ۲ Ω ۴ Ω ۸ Ω ۴ Ω bridged ۸ Ω bridged
  ۲ x 2,400 W ۲ x 1,950 W ۲ x 1,000 W ۱ x 4,800 W ۱ x 3,900 W
    High impedance, constant voltage ² ۱۰۰ V ۷۰ V      
  ۲ x 2,400 W ۲ x 1,800 W      
Max. output voltage ۱۴۰ V(peak)
Max. output current ۱۰۲ A(peak)


AC MAINS POWER          
Power supply Universal, regulated switch mode with PFC (Power Factor Correction)
Operating voltage ۹۵-۲۶۵ V +10/-15%, 50/60 Hz, tolerant up to 400 V
Power factor cos (φ) >0.90 @ >500 W
Consumption / current draw   @ ۲۳۰ V @ ۱۱۵ V
    ۱/۸ of max. output power @ 4 Ω* ۶۰۹ VA ۳٫۱ A ۶٫۳ A
    ۱/۴ of max. output power @ 4 Ω* ۱,۲۱۹ VA ۵٫۷ A ۱۱٫۴ A


Environmental operating temperature ۰-۴۵° C / 32-113° F 
Thermal dissipation Fan, continuously variable speed, temperature controlled, front to rear airflow
    Idle ۹۶ kcal/hr ۳۸۲ BTU/hr  
    ۱/۸ of max. output power @ 4 Ω* ۱۸۲ kcal/hr ۷۲۲ BTU/hr  
    ۱/۴ of max. output power @ 4 Ω* ۲۶۸ kcal/hr ۱,۰۶۲ BTU/hr  


Gain (selectable via user menu) ۲۶ dB ۲۹ dB ۳۲ dB ۳۵ dB
Input sensitivity @ 8 Ω ۴٫۴۷ V / 15.2 dBu ۳٫۱۷ V / 12.2 dBu ۲٫۲۴ V / 9.2 dBu ۱٫۵۹ V / 6.2 dBu
Input impedance ۱۰ kΩ      
Frequency response ۲۰ Hz – 20 kHz (1 W @ 8 Ω, +/-۰٫۵ dB)
THD+N / SMPTE IMD / DIM100 IMD typ. <0.05% (<0.5% @ >1 W)
S/N ratio >110 dB(A)
Crosstalk separation >72 dB @ 1 kHz
Slew rate ۵۰ V/µs @ 8 Ω. input filter bypassed
Damping factor >5000 @ 20-200 Hz


Indicators ۷ LED′s per channel for output voltage or current (selectable via user menu): 5 x green, 1 x yellow, 1 x red
LCD display for user menu
Controls ۴ pushbuttons, function depending on user menu
Power on/off switch
Maintenance SmartCard reader/writer for firmware updates and preset storage
Dust filters foam behind two steel covers

Input connectors Analog main: 2 x 3-pin Phoenix**, electronically balanced
Analog aux: 2 x 3-pin Phoenix**, electronically balanced (activated per aux voltage)
AES3 main (if KDSP and/or KAESOP present): 2 x 3-pin Phoenix**
AES3 aux (if KDSP and/or KAESOP present): 2 x 3-pin Phoenix** (activated per aux voltage)
Output connectors ۲ x 2-pin Phoenix*** per channel in parallel
Alarm ۱ x 2-pin Phoenix**** 24 V relay outputs per channel (fault alarm)
Aux command ۱ x 2-pin Phoenix**** 24 V relay inputs per channel (activate aux inputs)
Network data port RS485 RS485: 1 x RJ45 with 2 x rotary address switches
Network data port AESOP incl. AES3 AESOP: 2 x RJ45 with activity LED′s, plus 2-pin Phoenix for external aux voltage
AC mains IEC C19/22.2 20 A
(AC mains cord with 3-pin plug 20A for U.S., IEC ′Schuko′ ۱۶A for else)
Controls Link switch, linking analog inputs 1 and 2
AES3/analog input switch


Dimensions W 48.3 mm / 19″, H 44.5 mm / 1U, D 360 mm / 14.2″
Weight ۸ kg / 17.6 lbs
Side & rear reinforcement, front panel, dust covers ۳ mm steel
Top & bottom lid, rear panel ۱ mm steel


A/D converter Dual 24bit 48/96 kHz Tandem® architecture, 127 dB(A) dynamic range, THD <0.005% (20 Hz – 20 kHz)
D/A converter Dual 24bit 48/96 kHz Tandem® architecture, 122 dB(A) dynamic range, THD <0.003% (20 Hz – 20 kHz)
Memory ۸ MB RAM, 2 MB flash for presets
Digital audio input AES3 (glitchless fallback to analog audio selectable)
Delay for time alignment Up to 4 s on the input section, up to 32 ms per output, sample-by-sample stepping
Crossover filters Butterworth, Linkwitz-Riley, Bessel, Arbitrary Asymmetric, 6dB/oct to 48dB/oct (IIR), linear phase (FIR), hybrid (FIR+IIR)
Output equalizer ۱۶ fully parametric per channel. IIR: peaking, hi/lo shelving, hi/lo pass, band pass, band stop, all pass
Input equalizer Three layers (PEQ, raised cosine, shelving), 32 filters each
Cable compensation network (Active DampingControl™) Up to 2 Ω negative/positive wire compensation
Limiter Peak, RMS voltage, RMS current, TruePower™ limiters on each output

 = EIAJ test standard, 1 kHz, 1% THD
² = DSP preset must include HP filter and voltage limiter (70V/100V), or external HP filter (100V) for units without DSP.




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