Aquarian Audio Hydrophone - H2dX XLR 48V Ph, 9 m Kabel

Aquarian Audio Hydrophone - H2dX XLR phantom-powered, 9 m Kabel

The H2d hydrophone is designed to offer great sensitivity and low self noise in the human auditory range while being rugged, compact and affordable. Its small, streamlined shape and high specific gravity will help maintain a low working depth in mild wind and currents. Its compact size and flexible cable make it very portable and simple to use. It is available with either XLR or 3.5mm TRS output connectors to work with nearly every recording device with a microphone input. If both output types are needed, the user can easily adapt between the two. When both output connectors are needed, we recommend using the H2dM with the new PIP-XLR adapter.

Hydrophones with cable lengths of 3-25m are now packaged and shipped in an EVA case.

XLR output (H2dX)

Used with any microphone preamp with mating connector and phantom power. In most cases, these preamps will be built into a digital recorder, mixer, professional video camera or PA system. Phantom power is required and will likely need to be switched on in your device. Any phantom voltage will work. 48V is standard, but we recommend using the lowest voltage available for lowest power consumption and noise. For more information and limited specifications.

H2dX (XLR output)

Specifications are dependent upon the audio device to which the H2dX is connected. The output impedance of the H2dX is set by the phantom power supply from the audio device with which the hydrophone is used. Gain of the signal conditioning amplifier in the H2dX is related to the bias current and input impedance of the mic preamp. High-frequency performance is also limited by the output impedance of the hydrophone and the cable impedance—which is a function of length. For all of these reasons, we do not publish detailed response plots for this design. Please also note that further limitations in your overall system may result from the sampling rate of digital recorders and by the input stage of your audio device’s microphone preamp.

The following specifications are based on typical response when using the H2dX with a standard 48V phantom power supply (48V with 6.8K pull-up resistors):

Sensitivity:     -165dB re: 1V/µPa     (+/- 4dB 20Hz-4KHz)
Useful range:     <10 Hz to >100KHz     (not measured above 100KHz, approximate sensitivity @100KHz = -210dB re: 1V/µPa)
Polar Response:     Omnidirectional     (horizontal)
Operating depth:     <80 meters
Output impedance:     6.8 KΩ     (typical)
Power:     1.2 mA     (typical)
 
Physical:     (cable and output plug excluded)
Dimensions:     25mm x 46mm
Mass:     105 grams
Specific Gravity:     5.3

The H2dX is terminated with a 3-pin male XLR plug. Wiring is standard: pin 1 is ground, pin 2 is
hot and pin 3 unused1. This configuration should be compatible with any standard female XLR microphone jack. Phantom power is required and will need to be switched on in your device. Any standard phantom power supply voltage will work. Do not exceed +48V when powering the H2dX. If your recorder or mic preamp offers options for phantom voltage, we recommend using the lowest voltage available for lowest noise and power consumption. With the connection firmly made and phantom power switched on, there’s nothing more to do but adjust levels and take in the sounds of the deep.