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MPS:Modular Projector System

MPS is compact flexural disk transducer array, with elements stacked vertically, making is most suitable for underwater long range applications where high acoustic power is required. The strong silicon covering and steady structure makes its best to be used in sea water for long period of time.

Main Feature

6 Flexural disc transducer stacked vertical

Higher Power Low Frequency Acoustic Source than single FDT

Horizontally omni-directional

Longer Range

Can be used as projector at depths of 10m or greater to ensure a sufficient amount of pressure is placed on the transducer due to the flexural motion

Reliable, robust, high performance, low frequency transducers


High power low frequency acoustic source

Ranging Applications

Sound Navigation

Calibration Standard

Technical Specification
Nominal resonant frequency 4KHz (in bending motion)
Integral Amplifier or Tuning Element No
Receive Sensitivity @ 4KHz -152 dB re 1V/μPa
Maximum acoustic input@ 4KHz + 209.5 dB re 1μPa
Transmit Voltage Response@ 4KHz +131 dB re 1μPa/V at 1m
-3dB bandwidth 500Hz
Recommended transmit frequency range 3.0 – 5.0kHz, 8.5~10.0kHz
Maximum source level @ 136Hz +181 dB re 1μPa at 1m
Maximum applied voltage 1,000 Vrms
Horizontal beam pattern Omni-directional +/- 1dB @ Hz
Mechanical Specification
Dimensions Outer diameter: 94mm, Height: 24.6mm
Minimum operating depth 10m
Recommended operating depth 100m
Operating temperature range -20 to +70°C
Cable 10m standard. Optional extension is available
Connector Bare ends
Mechanical Drawing



Horizontal Beam Pattern @ 4KHz