Cetacean Research™ C75 Hydrophone - research hydrophones

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Cetacean Research™ C75

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« hydrophones « C75 model

New Omnidirectional hydrophone now available for purchase!

The Cetacean Research™ C75 Hydrophone is our new preamplified omnidirectional hydrophone.


Linear Frequency Response Range (±3dB) [kHz]		0.011 to 85
Usable Frequency Range (+3/-12dB) [kHz]		0.003 to 230
Transducer Sensitivity* [dB, re 1V/µPa]		-206
Preamplifier Gain [db]		20
Effective Sensitivity* [dB, re 1V/µPa]		-186
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa/√Hz]		57
Power Requirement [Vdc]		5 to 32
RMS Overload Acoustic Pressure [dB, re 1µPa]		190 to 207
Maximum Operating Depth ** [m]		250
Operating Temperature Range [ºC]		-40 to 85
Output Impedance []		10
Dimensions [mm]		101 L x (25 to 18) dia.
Integral Connector†		Subconn MCBH3MSS
Directionality		omnidirectional
^* Transducer Sensitivity + Preamplifier Gain = Effective Sensitivity. ** 1,000 meter versions are available. Append "-1k" to the model number to order a hydrophone with a depth rating >1,000 meters. † Connectors are rated to a depth of 7,000 meters; see below for mating connector and cables.

Shielded Cable Length [m]

mating connector molded to 15, 30, or 50 [m] shielded cable
other lengths available on a custom order basis
cable includes Integral Connector rated to a depth of 7,000 meters.

Battery / Connector box

Battery boxes are rated NEMA-4X water resistant. Standard signal connection for the Cetacean Research™ C75 hydrophone is through a watertight female BNC connector with gold center contact. The hydrophones are powered by a single 9V battery (not included).