S1 Hydrophone Threaded Body
Ultrasonic uniform frequency response. Multiple integrated signal conditioning options. Threaded body for easy mounting.
- Uniform frequency response to 100 kHz
- Integrated signal conditioning at hydrophone
- Active versions are capable of driving long cables
- M10 Threaded body enables easy mounting to a panel or conduit
What's Included:
- S1 Hydrophone with Threaded Body
- Mounting nut and O-ring
- Semi-rigid EVA travel case (not waterproof), excluded when length is over 20-meters
Note: the current lead time for all S1 hydrophones is 6-7 weeks from time of order.
In Stock: 7x custom S1f, 1meter CA-80 cable, standard body, wire output (we could terminate them with a BNC if desired), please contact us at sales@aquarianaudio.com to order them.
We are committed to prompt service. Many standard hydrophone variants are kept in stock and often ship the next business day. Custom builds are frequently completed within one week, depending on quantity and configuration.
We ship worldwide using trusted carriers including UPS, FedEx, DHL, and USPS. Shipping rates are calculated at checkout. International customers may be responsible for import duties, taxes, or brokerage fees assessed at delivery by their country and carrier.
Transit times and customs clearance can occasionally cause delays outside our control. Customers using their own courier account, freight forwarder, or uninsured shipping methods assume additional responsibility once the shipment leaves our facility.
For complete details on shipping methods, insurance, international shipments, delays, freight forwarding, and liability terms, please see our full Shipping Policy.
- Aquarian made products are backed by a 1-year limited warranty covering defects in materials and workmanship under normal use.
- Resold products manufactured by third parties may be covered by the original manufacturer’s warranty, where applicable.
- Returns of unused, like-new products are generally accepted, subject to inspection and approval.
Please review our full policies for details on custom products, misuse conditions, returns, exclusions, and limitations.
The S1 is available in several body styles with signal conditioning and connector options for pro audio, test equipment, compact recorders, or passive use.
Type
Standard body
Great for hanging the hydrophone from its cable.
Smooth exterior minimizes flow noise and gas bubble entrapment.
Weighted standard body
Great for hanging the hydrophone from its cable.
The added 150g weight helps sink the assembly and minimize cable noise. The weight can be positioned anywhere along the cable length.
Threaded body
Great for mounting the hydrophone to a panel, housing, or conduit.
M10-1.5 nylon retaining nut and nitrile O-ring included.
Note: If the cable must pass through the hole, choose the connector (or a modified termination) with routing in mind. Most connectors are larger in diameter than the M10 mounting hole.
Any body type can be combined with any signal conditioning and connector type.
Signal conditioning and connector
Additional connector types may be available for specialized applications, including dry-mate connectors from Blue Trail Engineering, wet-mate connectors from SubConn, Switchcraft circular connectors, and other OEM-specific connectors. Contact us with your equipment requirements for pricing and lead time.
Custom cable length
S1 can be customized up to 300 meters. Longer is possible but please inquire to discuss your application. Long cables can affect high-frequency response, especially with passive configurations or high-frequency measurement. Consider cable capacitance, input impedance, signal conditioning, and required bandwidth.
Custom cable Type
CA-53 is standard for all models except phantom-power S1e, which uses CA-70. Some alternative combinations are possible, please inquire to discuss your application.
S1e - Phantom Power
- Uniform Range (+1.2/-3.0 dBV)
- 4 Hz–110 kHz
- Receive Voltage Sensitivity
- -180 dBV re: 1µPa
- Acoustic Overload Pressure2
- 188 dB SIL re: 1µPa
S1f - IEPE Power
- Uniform Range (+1.2/-3.0 dBV)
- 4 Hz–108 kHz
- Receive Voltage Sensitivity
- -180 dBV re: 1µPa
- Acoustic Overload Pressure
- 185 dB SIL re: 1µPa
S1i - Plug-In Power
- Uniform Range (+1.2/-3.0 dBV)
- 19 Hz–108 kHz
- Receive Voltage Sensitivity
- -187 dBV re: 1µPa
- Acoustic Overload Pressure
- 180 dB SIL re: 1µPa
S1n - Passive
- Uniform Range (+1.2/-3.0 dBV)
- 1 Hz–110 kHz
- Receive Voltage Sensitivity1
- -206 dBV re: 1µPa
- Nominal Capacitance
- 6.5nF
- Transmit Voltage Response
- 128 dB µPa/V @ 1m
- Maximum Input Voltage
- 50 Vp-p continuous
- 200 Vp-p 10% duty cycle
1 S1n sensitivity affected by cable length. +/-3.0 dBV passed in QC. Typical variation between units of the same build is less than 2 dBV.
2 with 3V bias with 1.2 mA current.
Shared
- Operating Depth Maximum
- 200 meters
- Survival Depth
- 350 meters
- Horizontal Directivity (receive)
- +0.2/-1.0 relative dB @ 50kHz
- Vertical Directivity (receive)3
- +0.0/-5.9 relative dB @ 50kHz
- Operating Temperature Range
- -10°C to +80°C
- Size
- Ø12mm x 43mm
- Weight in Air
- 8 grams, hydrophone only
- Specific Gravity
- 1.4, hydrophone only
- Wetted Materials
- Polyurethane, anodized aluminum
3 Derived from AS-1 hydrophone.
Select Plots, see datasheet for additional
Receive Voltage Sensitivity
The receive voltage sensitivity and directional response charts are derived from calibration data provided by the U.S. Navy Underwater Sound Reference Division calibration labs at Newport. S1e, S1f, and S1i performance plots are derived from the S1n response combined with the corresponding amplifier response.

Directional Response
“Horizontal” refers to sound originating from directions perpendicular to the lay of the hydrophone cable. For additional technical detail, see the USRD notes.

