GeoSpectrum’s spherical transducers are suitable for a variety of applications, including active/passive sonar, marine mammal detection (MMD), acoustic data transmission, and subsea communications. A spherical transducer may be used with an M620-110 power amplifier if it is intended to be used as a sound source or an M303 transceiver board if it is it is intended to serve as a sound source and a receiver.

GeoSpectrum’s spherical transducers provide an omnidirectional response and come in a variety of sizes ranging from 6″ to 0.5″ in diameter and have resonant frequencies covering a band of 11 kHz–150 kHz. GeoSpectrum’s spherical transducers are effective as both transmitters and receivers.

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GeoSpectrum’s communications transducers are mountable, directional, mid- to high-frequency transducers. GeoSpectrum’s communications transducers are oil-filled, allowing them to operate at high-duty cycles.

GeoSpectrum’s communications transducers are used to transmit and receive data through the water column and can be used for a variety of different applications including subsea communications.

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GeoSpectrum’s benders can be used for a variety of different low-frequency applications, including, but not limited to subsea communication, long range data transmission, and active sonar. GeoSpectrum’s ability to customize both individual benders and multi-bender sources gives the M21 product family the ability to meet a wide range of requirements and applications.

GeoSpectrum’s M21 benders, or flexural disk transducers, are highly versatile underwater acoustic projectors that produce moderate power over broadband and high power near resonance. M21’s come in a variety of sizes serving a wide range of resonance frequencies and bandwidths. GeoSpectrum can custom design M21’s to be tailored for each customer’s unique requirements such as resonance frequency, bandwidth, or depth capability.

M21’s are excellent options to be combined into multi-bender sources that are highly customizable to a customer's requirement. M21’s can be used in a Modular Project System (MPS) to produce greater power and bandwidth at even lower frequencies, or in conventional arrays to produce a directive, high-power source.

Individual M21’s can be custom designed to achieve resonance frequencies ranging from 400 Hz to 12 kHz and higher. A selection of standard M21 designs are also available.

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C-BASS is a novel family of very low frequency (VLF) electrodynamic sound projectors. These powerful electrodynamic projectors are less expensive, lighter, smaller, more efficient, and have a broader bandwidth than their peers. C-BASS makes possible applications that were previously impractical.

GeoSpectrum offers a wide range of standard C-BASS configurations with operating frequencies ranging from below 10 Hz up to 3 kHz and maximum source levels that exceed 200 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable us to customize C-Bass designs to customer specifications. The omni-directional C-BASS can be used individually or in arrays to produce high-power sources with or without directivity.

C-BASS are offered as stand-alone transducers for customer integration or as a GeoSpectrum-provided system that can include VLF amplifiers, pressure compensation, signal controllers, tow bodies, deployment cables, and winch systems.

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GeoSpectrum offers a wide range of FFR transducers and FFR based sources with operating frequencies ranging from 500 Hz to 20 kHz and source levels from 190 to 220 dB re 1 µPa @ 1m. Our finite element analysis and modeling tools and significant build experience enable to us to customize FFR designs to customer specifications. Depending on the application and requirements, Geospectrum can use radially poled and circumferentially poled (segmented) construction methods to produce FFR’s to precisely meet users’ needs with potential savings in cost and weight.

Using FFR technology to produce a standard range of communications transducers with a hemispherical beam pattern, the transducers are ideal for use in a range of underwater communications and acoustic modem applications. As well as producing models tuned to suit popular modem systems, we are able to offer drop-in replacement for transducer models of other companies that may no longer be available on the market.

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