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Item number: 4208-XXXXX

The PS-850 is a powerful and flexible double 18" subwoofer from the Perform series. The passive sub with direct dispersion and vented enclosure is the perfect complement to the Focus Venue modules and the PT-70 speaker. In conjunction with the DSP-driven DI amplifiers, it provides precise and powerful sound for concert halls, clubs, stadiums and open-air events. The PS-850 is perfectly suitable for horizontal, vertical or end fired sub-arrays, but also for cardioid setups.

Main features

  • 2 × 18" long excursion driver with 4.5" voice coil
  • Water-resistant cones
  • Nominal power rating: 2000 W
  • SPL max.: 142 dB
  • Cut-off frequency: 27 Hz
  • High-quality multiplex birch plywood enclosure with scratch-proof PU coating
  • 2 × Speakon ports each at front and backside for cardioid operation
  • 2 × steel reinforced slots for optional rigging mechanics (Fohhn Interlock System)
  • M20 thread for distance rod
  • Versatile accessories such as transport cover, front lid and dolly
  • Attention: The loudspeaker can be operated with Fohhn system amplifiers and the correct speaker preset only.


Fohhn technologies

Technical data

Electroacoustic features

acoustic design
direct radiating, vented design, NTP (Non-Turbulent-Port design)
power rating (nominal)
2000 Watt
2 × 18" long excursion chassis with 4.5" voice coil, water-resistant cones
maximum SPL
142 dB
cut-off frequency
27 Hz
nominal impedance
4 ohms

Physical features

multiplex birch plywood
protection grille
hexagonal perforated steel grille, powder-coated in enclosure colour, backed by acoustically transparent foam
115/105 kg with/without rigging system
polyurethane coating, black
4 handles on each side
transport wheels
2 fittings for optional wheel board
2 rubber skids on bottom, 2 mating slots on top, 4 rubber feet on each side, 1 fitting for cable strain relief on rear panel
mounting points
1 × M20 thread for distance rod, 4 × slot for rigging system, 2 × catches for front panels
rear: 2 × Neutrik NL4 Speakon, recessed front: 2 × Neutrik NL4 Speakon, for cardioid setups
dimensions (w × h × d)
1200 × 600 × 900 mm

Optional features

optional weather protection
polyurethane coating, water-repellent speaker cone impregnation

CAAD simulation data

simulation data
Fohhn Designer

power rating (nominal/program): according to IEC-60268-5 (long term/short term)
power rating (peak); maximum SPL: peak, 20 ms with bandpass filtered pink noise signal according to IEC 60268-2 at one octave above the lower limit of the frequency range, with speaker preset
weight: net weight without optional equipment
cut-off frequency: -10 dB under anechoic halfspace-conditions with speaker preset

Contact us

+49 7022 93323-0

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