Products   Cetacean Research™  Hydrophones Basic Hydrophones  SS03-10 Hydrophone SQ26-08 Hydrophone Research Hydrophones  CR1 Hydrophone CR2 Hydrophone CR3 Hydrophone C55 Hydrophones C75 Hydrophones C304 Hydrophone Hydrophone Systems  Noise Measurement Underwater Recording RUDAR™ Whale Watching  Signal Analysis Tools Analysis Software Interface Hardware  Pro Audio Accessories  Suction Cups  Discontinued Products Education  Acoustics Primer Sample Sounds Related Reading Related Links
Enter your search terms Submit search form

CR1 hydrophone product photos    for maximum enlargement, click on thumbnail; --- for medium-sized enlargement, scroll down

The Cetacean Research™ model CR1 hydrophone is an excellent multi-purpose hydrophone. This non-preamplified hydrophone is ideal for the detection and recording of very loud signals; such as those from pile driving, air guns, or underwater demolition operations. In addition, it can be used with an external preamplifier (such as the ART USB Dual Pre) for recording and listening to the quieter sounds of cetaceans and other underwater sources. Terrestrial applications for the CR1 include vibration detection and using it as a geophone. The hydrophone comes with an extra tough polyurethane-jacketed coaxial cable. The cables can be terminated with either BNC or mono phone plug connectors. All CR1 hydrophones are individually spot calibrated at the factory.

Linear Frequency Range (±3dB) [kHz]		0.0002† to 50
Useable Frequency Range (+3/-20dB) [kHz]		0.00002† to 110
Sensitivity [dB, re 1V/µPa]		-198
Preamplifier Gain [dB]		N/A
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]		TBD
Power Requirement [Vdc]		N/A
RMS Overload Acoustic Pressure [dB, re 1µPa]		N/A
Maximum Operating Depth [m]		100
Operating Temperature Range [ºC]		-25 to 60††
Capacitance [nF]		10
Dimensions [mm]		73 L x 32 dia
Coaxial Cable Length [m]		15 Cable terminated with male BNC or mono phone plug connector (longer cable optional)
Directionality		omnidirectional below 10kHz
Battery / Connector box		power not required
† Requires a preamplifier with 100M input impedance, such as the Reson VP1000 (PDF) or Reson VP2000 (PDF) preamplifiers. If a preamplifier with 1M input impedance is used, then the low frequency -3dB point will be at 16Hz instead of 0.2Hz and the -20dB point will be at 2Hz instead of 0.02Hz. ††CR1 hydrophones are individually spot calibrated at the factory; calibration guaranteed between -5ºC and 30ºC.

Options extra length ruggedized cable custom orders not listed above hydrophone may be used with either the optional ART USB Dual Pre,  Reson VP1000 (PDF), or Reson VP2000 (PDF) preamplifiers.