Hydrphone Plans Underwater Listening Device
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A Guide to Constructing Hydrophones
and Hydrophone Arrays for Monitoring
Marine Mammal Vocalizations
Instant Download! Only 4.99
See Picture Below for completed Hydrophone!
Build A Hydrophone & Listen to Underwater Mammals!
With your home made hydrophone you can listen to whales and dolphins and more!
Here is a sample of the range of this device!
Marine mammal vocalizations or linear hydrophone arrays in which several hydrophones are molded
onto a single cable for localizing a sound source. This guide is intended for anyone with an interest in
building hydrophones, and no special expertise is required. The hydrophones described below are
based on an EC65 cylindrical hydrophone element and a
preamplifier. This combination has proven to be reliable, gives a very “clean” sound (up to
approximately 40 kHz), and is excellent for receiving sounds from sperm whales, humpback whales,
and several dolphin species.
The preamp incorporates a high-pass filter that reduces flow noise that occurs when towing the
hydrophones. A very small modification can be made to remove this filter and extend the usable
frequency response down to a few Hz. Note that even with this modification, the hydrophones are not
linear in frequency response. An example calibration is provided. Some sound analysis software can
compensate for a known frequency response to restore linearity.
The building process described here consists of many steps, none of which are difficult. Some steps,
however, have little margin for error. Be sure you’ve had your coffee first. But not too much!
Comes with complete parts list!
Comes with color pictures and step by step instructions!
Hydrophone Plans Instant Dowload Only 4.99