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Ottocanali 12K4

Powersoft Ottocanali 12K4

The Ottocanali 12K4: extremely flexible and reliable. It offers a wide range of system control and monitoring functions as well as sound shaping options, a total of up to 12,000 W output power over 8 channels for lo-Z or distributed line systems all neatly packed into a double rack unit. As ‘stand-alone’ unit the Ottocanali 12K4 fits any venue. Excellent sound quality and ample output power stem from Powersoft’s unique approach to Class D amplification, making the Ottocanali 12K4 the ideal main system in any venue where performance is priority.

Powersoft’s legendary efficiency saves valuable energy, keeping both operational cost and ‘carbon footprint’ at a minimum: the Ottocanali 12K4 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.


Legendary Powersoft efficiency

  • Green Audio Power®: minimal ‘carbon footprint’ and operational cost of electricity (Energy Star qualification pending); additional ‘Energy Save’ function
  • Compact and space saving: 2 RU, and standard depth 360 mm / 14.2”

Driving low impedance and distributed line systems

  • Mixed lo-Z/hi-Z systems possible
  • Bridged mode low impedance
  • Up to 28 different output configurations possible

Unique Powersoft technology for efficient, reliable, great sounding performance

  • Two universal switch mode power supplies with PFC (Power Factor Correction) each independently powering a set of 4 channels
  • Fixed frequency switch mode amplifier output stages
  • Patented amplifier output filters with ripple cancellation network

Maximize performances, minimize consumption

  • Patented SRM (Smart Rails Management) technology allows to maximize the efficiency of the system and drastically reduce power consumption at any load and usage condition.

Outstanding performance and operational safety

  • Excellent sonic quality by design, including amp clip limiters and patented ripple cancellation network

Practical & versatile

  • Directly driving either low impedance loads or 70 V/100 V lines
  • Capable of driving 2 loads
  • A dipswitch set for each channel allowing selection lo-Z or hi-Z (70 V or 100 V) modes, with or without HPF filters set to either 35 Hz or 70 Hz
  • A full set of auxiliary inputs for all channels granting redundancy for security purposes
  • Front panel safety cover hiding output attenuators and ‘Energy Save’ switch
  • Channel specific independent set of alarms triggered by potentially dangerous faults or generally unsafe operation conditions
  • All signal/control connectors Phoenix industry standard
  • Front-to-rear airflow cooling with variable-speed fan, temperature controlled

Full protection circuitry

  • over/under AC voltage, DC
  • troublesome signals (clipping, VHF, long-term RMS)
  • thermal
  • short circuit
  • mute at power on/off

Full four years warranty


Number of channels8
Mono-bridgeable per channel pair
Output power
2 Ω / ch

4 Ω / ch8 Ω / ch70/100 V4-8 Ω / ch pair
16 Ω / ch pair
(all channels driven)1000 W1500 W750 W1500 W2000-3000 W1500 W
Max. output voltage150 V(peak)150 V(peak)150 V(peak)100/141V(peak)300 V(peak)300 V(peak)
Max. output current 54 A(peak)54 A(peak)54 A(peak)30/21 A(peak)54 A(peak)54 A(peak)

Power supplyUniversal, regulated switch mode with PFC (Power Factor Correction)
Operating voltage / Inrush current100-240 V ± 10%, 50/60 Hz
Power factor cos (φ)>0.95 when >500 W
Consumption / current draw@ 230 V@ 230 V@ 115 V@ 115 V
Energy Save on35 W0.20 A30 W0.26 A
Energy Save off70 W0.50 A55 W0.78 A
1/8 of max. output power @ 4 Ω2100 W10 A2100 W16 A

Environmental operating temperature0-45° C / 32-113° F
Thermal dissipationFan, continuously variable speed, temperature controlled, front to rear airflow
230 V230 V115 V115 V
Energy Save on119 BTU/h30 kcal/h102 BTU/h26 kcal/h
Energy Save off239 BTU/h60 kcal/h187 BTU/h47 kcal/h
1/8 of max. output power @ 4 Ω*7165 BTU/h1805 kcal/h7165 BTU/h1805 kcal/h

32 dB
Frequency response20 Hz - 20 kHz (-0.5 dB) for 1 W @ 4 Ω
Noise floor-67 dBV (20 Hz - 20 kHz, A weighted)
Crosstalk separation-67 dB @ 1 kHz (4 Ω)
Input sensitivity @ 8 Ω2.0 VRMS /+8.2 dBu
Input impedance10 kΩ balanced
THD+N / SMPTE IMD / DIM100 IMD< 0.05% from 0.1 W to full power (typically <0.02%) @ 8 Ω
Slew rate50 V/μs @ 8 Ω, input filter bypassed
Damping factor> 10000 @ 100 Hz (lo-Z)

Indicators7 multifunction LEDs per channel: 4 x green, 2 x yellow, 1 x red
ControlsPushbutton enables 24 V DC at back PWS OUT connector (can also toggle LINE/AUX inputs). 8 output attenuators, energy save mode activation (per channel pair) DIP switch
MaintenanceDust filters foam behind frontal silver colored panels

Controls4 DIP switches for each channel (allows selction of 70 V/100 V modes, hi-Z/lo-Z modes, 35 Hz/70 Hz LPF, HPF on/off)
Input / Output connectors4 x 12 pin Phoenix MC 1.5/12-ST-3.81 1803675 / 2 x 8 pin DFK-PC 4/8-G-7.62 1861219
Fault alarm connectors2 x 12 pin Phoenix MC 1.5/12-ST-3.81 1803675
Aux command (triggering aux inputs) and aux voltage for remote on/off switching4 pin Phoenix MC 1.5/4-ST-3.81 1803594
Aux front switch enabling and external 24 V DC (0.2A) auxiliary supply4 pin Phoenix MC 1.5/4-ST-3.81 1803594
Aux voltage for remote on/off switching4 pin Phoenix MC 1.5/4-ST-3.81 1803594
AC mainsIEC C19/22.2 20 A,
AC mains cord with 20 A 3-pin plug 20 A for US, IEC Schuko 16 A for every other nation

DimensionsW 483 mm / 19”, H 89 mm / 3.5” / 2 RU, D 360 mm / 14.2”
Weight14 kg / 30.8 lb
ChassisSteel safety/dust covers; 1 mm steel front panel, side reinforcement, rear support; 1 mm steel top & bottom lid, rear panel

Powersoft reserves the right to change specifications without notice.

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