Hydrophones for hydrophone amplifiers and pinger detector
Hydrophones are used for picking up weak sound vibrations under water and the signal must be amplified by a high impedance hydrophone amplifier in order to convert the extreme high output impedance in the hydrophones piezoelectric ceramic into a low impedance signal which can be handled by commonly available signal processing equipment.
Hydrophones and amplifiers are used for studying underwater acoustics and monitoring of sonar and communication sound signals from dolphins, porpoises and whales and detection of acoustic pingers and detection of cetacean clicks.
Dolphin sound recordings
Etec amplifers for Hydrophones
Our Amplifiers are "state of the art" in performance and especially designed to be used together with piezoelectric hydrophones. Recommended types of hydrophones may be the following types which we have chosen in order to cover all types of demands from the highest scientific level to more common requirement into high quality sound recording.
The impedance conversion rate is normally 1 to 10e9 ie. from an input impedance of 10 Giga ohm down to 10 ohm on the amplifiers output terminal.
The etec line of amplifers offers an input impedance of 1 to 10 Gigaohm and 10picofarad which is sufficient to handle the frequency range from 0.1Hz to 1MHz even with the smallest types of transducer ceramics. We are capable of handling low level signals down to 1uVolt rms at 1KHz. which equals just about 60dB signal level under water.
TC4033 or TC4034 Reson hydrophones
Passive hydrophones equipped with BNC connector. Ideal for both receiving and transmitting. They will both be able to handle 100Volt transmitting signal at 10% duty cycle.
Robust Spherical Reference Hydrophone TC4033:
• Frequency (kHz) 1Hz to 160kHz
• Recieving Response (dB) - 203dB ±3dB at 250kHz
• Operating Depth 900m
Reson TC4033 Hydrophone
Robust Spherical Reference Hydrophone TC4034:
• Frequency (kHz) 1Hz to 470kHz
• Recieving Response (dB) - 218dB ±3dB at 250kHz
• Operating Depth 900m
Picture showing Reson TC4033 hydrophone inclusive the adaptor for Hirose 7 pole to BNC connector . Used to connect standard type Reson TC4033 or eq. with BNC connectors to suit for the etec PD1102 portable fishery inspection and listening amplifier. The 7 pole Hirose adaptor to be delivered on reuest.
TC4033 Reson hydrophone data sheet
Click to view pdf file. Opens in a new window
TC4034 Reson hydrophone data sheet
Click to view pdf file. Opens in a new window
H1a-BNC hydrophone data
The H1a hydrophone is designed to provide high-quality audio performance in a low-cost device. It is very durable and will interface directly with high-impedance microphone or instrument preamps. It offers very good sensitivity and low noise in the human auditory range. The H1a’s streamlined shape and high specific gravity will help to maintain a low working depth in a moving water column. Its compact size and the easy hand of its cable make it very portable and simple to use.
• Sensitivity : -190dB re: 1V/µ Pa (+/- 4dB 20Hz-4KHz)
• Useful range : 1 Hz to 100KHz
• Approximate sensitivity : @100KHz = -220dB re: 1V/µ Pa
Click to view PDF file. Opens in a new window
Price:
H1a passive hydrophone 2 wire with BNC connector - Price € 159.-
H2a-XLR hydrophone data
The H2a-XLR hydrophone is designed to work with any PA system or recording device that offers a balanced, phantom-powered, microphone input. It uses the same low-noise, robust transducer assembly as our H1 hydrophone, but includes a low noise internal buffer amp. Operation is very simple: just connect to your mic preamp, switch on phantom power and use. No additional power supply is required.
• Sensitivity : -180dB re: 1V/µ Pa (+/- 4dB 20Hz-4.5KHz)
• Useful range : 10 Hz to 100KHz
• Approximate sensitivity : @100KHz = -220dB re: 1V/µ Pa
Click to view PDF file. Opens in a new window
Price:
H2a-XLR active hydrophone 3 wire with XLR connector. Price € 195.-
AS-1-BNC hydrophone data
The AS-1 hydrophone is designed to provide maximum sensitivity in a small size while also providing a linear response in the bandwidth of the highest-quality commercial digital sound recording interfaces. Response is omnidirectional in the human auditory bandwidth, as well as omnidirectional in the horizontal axis at all frequencies (theoretical). Given these qualities, the AS-1 is well-suited for absolute underwater sound measurements in marine and industrial environments. It can also be used as an omnidirectional reference projector.
• Linear range : 1Hz to 100kHz ±2dB
• Receiving Sensitivity : -208dBV re 1µPa (40µV / Pascal)
• Transmitting Sensitivity : 140dB SPL re 1µPa at 90kHz
• Maximum Input Voltage: 30V p-p (continuous); 150V p-p (<10% duty cycle, <100KHz)
Click to view Data PDF file. Opens in a new window
Click to view Charts PDF file. Opens in a new window
Price:
AS-1 passive hydrophone 2 wire with BNC connector. Price € 395.-
Hydrophone Amplifier Phantom Powered with XLR connector and BNC input type XLR48-30720
Phantom Powered Hydrophone Amplifier with XLR connector suitable for any type of commersial mixing console or recording device. Matches any type of passive hydrophone with BNC connector.
Operates on standard XLR phantom power 24volt or 48 volt. High signal output due to high supply voltage. Frequency range from 20Hz to 700kHz. Gain 30dB.
This unit comes in various versions with different frequency ranges and/or different gain. May be delivered on request at no extra cost.
We recommend the ZOOM type H4 handheld digital recorder.
Hydrophone XLR preamplifier with 30dB gain. Adapts to any passive hydrophone with BNC connector and converts the hydrophone into XLR connector output signal. Suits any mixing console and recording device witch has an XLR phantom power supply.
Price euro € 500,- Exclusive of the hydrophone
Product sheet pdf document, opens in a separate window
We recommend the ZOOM type H4 handheld digital recorder. We also recommend the Teledyne-Reson TC4033 or TC4034 hydrophones to match this amplifier.
Hydrophone- & Listening Amplifier
MPA102-MK2-TC4033/TC4034/TC4038
Set of Hydrophone Amplifier and a Listening Amplifier. Including a modified version of the amplifier IMG MPA-102 together with a Hydrophone from Teledyne-Reson type TC4033 or TC4034 plus an XLR preamplifier to receive the signal for the passive hydrophone.
Price exclusive hydrophone and preamplifier euro € 800,-
Product sheet pdf document, opens in a separate window
Text same as below exept that the hydrophone here is passive thus requires a preamplifier to convert the high impedance of the hydrophone to match the standard input of the amplifier.
The XLR preamplifier may be purchased separately for other purposes. Suits any mixing console and recording device with phantom power supply.
The type is XLR48-xx as described above.
Hydrophone and a Listening Amplifier
Model MPA102-MK2-H2R
Set of Hydrophone and a Listening Amplifier. An modified version of the IMG MPA-102 Phantom powered hydrophone AquarianAudio H2A-XLR
Phantom Powered Hydrophone. Amplifier setup with XLR connector suitable for any type of commersial mixing console or redording device.
Price inclusive hydrophone euro € 1.000,-
Product sheet pdf document, opens in a separate window
Phantom Powered Hydrophone. Amplifier setup with XLR connector suitable for any type of commersial mixing console or redording device.
This setup is a low cost kit especially intended for underwater listening and detection of leakage in water tanks or in pipelines or other kind of audible sound information in liquids.
The MPA-102 amplifier is a stand alone unit with build in batteries and 70dB of gain. It features a 24Volt phantom power supply to drive an active hydrophone equipped with the standard 3pole XLR connector.
High signal output due to a high supply voltage of 4 pcs 9 volt square batteries. The amplifier may also be powered from the included mains powered wall plug AC adaptor.
Frequency range from 10Hz to 50kHz. plus a very high gain of 70dB. High and Low pass filters for emphasizing the listening frequency range. A mixing function to connect with a monitor amplifier or a set of headphones.
This unit is compatible with most any type of professional studio recording and reproduction equipment. We recommend the ZOOM type H4 handheld digital recorder to supplement this listening amplifier for recordings and documentation.
This device will record the audible range 20hz to 20kHz.
For the wider bandwidth of 10Hz to 50kHz we recommend the audio interface AD converter adaptors from ZOOM. They are designed to be connected to a computer with USB interface for recording. Types in question could be the following units which offers up to 192khz of sampling rate :
• ZOOM UAC-2 for Windows USB 3.0 Audio Converter Zoom
• ZOOM TAC-2 for MAC Thunderbolt. Extreme speed for extraordinary sound. TAC-2R Thunderbolt™ Audio Converter
• ZOOM F8 for 8 channel high quality multitrack field recordings
• H2a-XLR Hydrophone
Facta box
Hydrophone
A Hydrophone (Greek "hydro" = "water" and "phone" = "sound") is a microphone designed to be used underwater for recording or listening to underwater sounds. Most hydrophones are based on a piezoelectric transducer that generates electricity when subjected to a pressure change. Such piezoelectric materials, or transducers can convert a sound signal into an electrical signal since sound in water is a pressure wave in fluids.
Sonar
Sonar is the name given to the acoustic equivalent of radar. Pulses of sound are used to probe the sea, and the echoes are then processed to extract information about the sea, its boundaries and submerged objects. An alternative use, known as passive sonar, attempts to do the same by listening to the sounds radiated by underwater objects.
