Spherical Transducers

High-frequency sound source and 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.

Description

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 M320 power amplifier if it is intended to be used as a sound source or an M304 transceiver board if it is it is intended to serve as a sound source and a receiver.

Model Number
OD (cm)
Resonance Frequency (Hz)
TVR @ Resonance (dB re μPa/V @ 1 m)
OCV @1 kHz (dB re V/μPa)
Max Depth (m)
Weight (kg)
Capacitance (nF)
Spec Sheet PDF Download
M18C-1.0
2.9
68000
148
-198.5
2500
0.2
10.2
M18C-1.5
4.4
47000
148
-195.0
2500
0.3
23.5
M18C-2.5
6.7
27000
148
-190.0
2500
0.5
42.5
M18C-4.0
10.8
16500
148
-186.5
2500
1.4
57.3
M18C-6.0
15.7
12000
148
-185.0
2500
4.8
80