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Hydrophone GP1190



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The GP1190 is a preamplified omnidirectional hydrophone made by Colmar Italia

Hydrophone GP1190

The GP1190 is a preamplified omnidirectional hydrophone, suitable for a wide range of applications requiring
working frequencies up to the ultrasonic range (170 kHz). The device is a professional class measurement tool.


• High sensitivity
• Low noise
• Working band up to 170 kHz
• Double output: single/differential
• Calibration input
• High materials quality
• Metal shell connector 

Technical specifications

• Working band: 5 -170.000 Hz

• High pass filter on preamplifier : Customizable (on demand)

• Balanced output sensitivity: -172 dB re 1V/uPa @5kHz (customizable)

• Single output sensitivity: -178 dB re 1V/uPa @5kHz (customizable)

• Directivity : Spherical – Omnidirectional

• Max working depth : 1000 m

• Gain @5kHz: 26 dB (single output), 32dB (balanced output)

• Equivalent input acoustic noise @5kHz: 38 dB re 1uPa / sqrtHz

• Input impedance: 10 MOhm

• Supply voltage range: 11.5 – 30 Vdc

• Current consumption: 9 mA @ 12 Vdc

• Output voltage swing: 4 Vpp (single output), 8Vpp (balanced output)

• Weight in air: 500 gr

• Body construction: Stainless steel AISI 316 or POMC

Accessories and optional configurations

• Protective frame

• Protective frame with suspension system for vibration damping

• Portable and rugged receiving unit fitted with high frequency A/D National Instrument NI9222, up to 4 channel inputs, rechargeable battery and software “Colmar Mobile Acquisition System” 

Also available

• GP1190M model (directly molded with cable)

• GP1190LP model. Low Power version (from 3.1 Vdc to 5.5 Vdc,


• Ultra deep (up to 3500m) version.

• Custom cable lengths and connectors. 

Hydrophone GP1190 Download

Product sheet – Hydrophone GP1190

Product sheet – Hydrophone GP1190MR