Hydrophones

Products

Cetacean Research™
Hydrophones

Basic Hydrophones

Research Hydrophones

Hydrophone Systems

Signal Analysis Tools

Analysis Software

Interface Hardware

Pro Audio Accessories

Suction Cups

Discontinued Products

Education

Acoustics Primer

Sample Sounds

Hydrophone Models:
compare specs

		SS03-10		General purpose hydrophone ideal for kayaking, whale watching and full audio-band signal detection... more »
		SQ26-08		General purpose hydrophone ideal for kayaking, recreation, eco-art, and whale watching... more »
		CR1		Ideal for detection and recording of very loud signals, such as those from pile driving, air guns, or underwater demolition operations... more »
		CR2		Ideal for detection and recording of extremely loud signals, such as those from high-power sonar, large pile drivers, air gun arrays, or underwater explosions... more »
		C54XR C54XRS		Cylindrical hydrophones for detection of audible and ultrasonic sounds, with the addition of an integral connector... more »
		C304		Directional receive pattern with very wide frequency response for monitoring ultrasonic signals not detectable by competing brands... more »

Hydrophone Systems:
	Noise Measurement	calibrated underwater noise measurement systems - the only PC-based sound pressure level meter in existence to be in compliance with ANSI S1.11 and IEC1260 standards!... more »
	Underwater Recording	high-quality underwater sound recording systems - from standard audio to ultrasonic frequencies... more »
	RUDAR™	Remote Underwater Digital Acoustic Recorder for underwater sound recording... more »
	Whale Watching	portable listening systems for whale watching - an economical way to get set up quickly... more »

Cetacean Research™ Hydrophone Specifications Comparison


Model Number	CR1	CR2
Linear Frequency Range [kHz]	0.0002† to 50 (±3dB)	0.002†† to 28 (±3dB)
Useable Frequency Range [kHz]	0.00002† to 110 (+3/-20dB)	0.0002†† to 250 (+3/-20dB)
Sensitivity [dB, re 1V/µPa]	-199	-214
Power Requirement [Vdc]	N/A	N/A
Maximum Operating Depth [m]	100	100 (preliminary)
Operating Temperature Range [ºC]	-25 to 60†††	-40 to 70
Preamplifier Gain [dB]	N/A	N/A
RMS Overload Acoustic Pressure [dB, re 1µPa]	N/A	N/A
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]	TBD	TBD
Capacitance [nF] or Output Impedance []	10.5nF	0.82nF
Dimensions [cm]	7.3L x 3.2 dia	5.6L x 1.4 dia
Coaxial Cable Length [m]	15	10
Coaxial Cable Length [m]	Cable terminated with male BNC or mono phone plug connector (longer cable optional)
Directionality all are omnidirectional below 10kHz	-	-
Battery / Connector box	power not required
	†The CR1 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 20Hz instead of 0.2Hz and the -20dB point will be at 2Hz instead of 0.02Hz. ††The CR2 also 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 200Hz instead of 2Hz and the -20dB point will be at 20Hz instead of 0.2Hz. †††CR1 hydrophones are individually spot calibrated at the factory; calibration guaranteed between -5ºC and 30ºC. CR2 hydrophones are not individually calibrated, but calibrated frequency response measurements can be performed upon request.


Model Number	C54XR	C54XRS	C304
Linear Frequency Range [kHz]	0.016 to 50 (+2/-3dB) 122 to 250+	0.016 to 44 (+2/-3dB)	0.007 to 250+ (±3dB)
Useable Frequency Range [kHz]	0.006 to 82 (+2/-20dB) 92 to 250+	0.006 to 203 (+2/-20dB)	0.005 to 250+ (+3/-12dB)
Transducer Sensitivity* [dB, re 1V/µPa]	-200	-185	-203
Preamplifier Gain [dB]	20	20	34
Effective Sensitivity* [dB, re 1V/µPa]	-180	-165	-169
Power Requirement [Vdc]	5 to 32	5 to 32	5 to 32
Maximum Operating Depth ** [m]	460	460	460
Operating Temperature Range [ºC]	-40 to 60	-40 to 60	-40 to 60
RMS Overload Acoustic Pressure [dB, re 1µPa]	184 to 201	169 to 186	173 to 190
SPL Equiv. Self Noise at 1kHz [dB, re 1µPa]	58	42 (< Sea State Zero)	~ 63
Capacitance [nF] or Output Impedance []	2.5	2.5	2.5
Dimensions [cm]	13.2L x (1.9 to 2.5) dia.	13.2L x (1.9 to 2.5) dia.	8.3L x 3.2W x (0.6 to 2.5)T
Shielded Cable Length [m]	mating connector molded to 15, 30, or 50 (other lengths available on a custom order basis) cable includes Integral Connector rated to a depth of 7,000 meters.
Directionality all are omnidirectional below 10kHz	very directional at high frequencies (e.g., ~15º solid angle at 200 kHz, 3dB); directionality focused in a plane.		very directional at high frequencies (e.g., ~15º solid angle at 200 kHz, 3dB); directionality pattern is a dipole.
Battery / Connector box rated NEMA-4X water resistant (excluding connectors), requires single 9V battery (not included) 9V battery life > 20 hrs	standard signal connection is through a 1/4" phone jack equipped with a water resistant cover or a watertight BNC connector- external headphone amplifier available		standard signal connection is through a female BNC connector
Battery /connector box options	integral water-resistent connectors
	high-pass filter switch built into battery box
	wire battery box to accept power from external supply
	* Transducer Sensitivity + Preamplifier Gain = Effective Sensitivity. ** 1,000 meter versions of the C54XR, C54XRS, and C304 hydrophones are available. Append "-1k" to the model number to order a hydrophone with a depth rating >1,000 meters. C54 series and C304 Hydrophones are not individually calibrated, but calibrated frequency response measurements can be performed upon request.

T o o l s f o r R e s e a r c h , E d u c a t i o n & C o n s e r v a t i o n

Cetacean Research Technology
4728 12th Ave. NE - Seattle, WA 98105 USA

CONTACT CETACEAN RESEARCH TECHNOLOGY

Hydrophones

Hydrophone Models:compare specs

Hydrophone Systems:

Cetacean Research™ Hydrophone Specifications Comparison

Hydrophone Models:
compare specs