Ecologic can assemble acoustic monitoring systems to meet the particular requirements of clients.
In addition, Ecologic acts as an agent for Magrec, a firm that specialises in the production of acoustic equipment for marine mammal research. The following standard items are available.
Magrec Underwater Monitoring Equipment Available Through Ecologic
Prices exclude delivery.
HP/30 is designed to be deployed from a small boat or dinghy and will capture
sounds within the audible frequency range. An external 12 volt battery is
required to power the hydrophone, dry cell or a small rechargeable type are
suitable. The output can then be fed into the MICROPHONE input of a portable
amplifier or tape recorder. The output is D.C. and should be decoupled if
necessary. For best results the hydrophone battery must be isolated from all
other equipment such as tape recorders etc. Use the HF/22 battery box for
convenient power supply and decoupling or the HP/24 with additional headphone
output. Cable lengths available 850 metres.
element and preamplifier are suspended in an oil filled P.V.C. tube. Length
210mm. diameter 27mm. Standard cable length 8 metres fitted with 6 pin
waterproof 1P68 connector.
HP/30LF Low frequency hydrophone. As above but with extended LF range. Customer specified down to 15Hz.
For cable lengths greater than 8m add £2.00 per metre
The HP-40 is designed to capture low and high frequency sounds, using a spherical element and balanced output preamp. A 12 volt battery is required unless using the recommended monitor amps HP-25 or HP-26.
Output connector: 6 pin Buccaneer plug.
Cable lengths 10 to 50 metres.
No cost option, extended low frequency range available, down to 10Hz.
For cable lengths greater than 8m add £2.00 per metre
High frequency range available using SRD HS-150 elements or equivalents
Hairy fairing to reduce strum
Dimensions: HP-30ST 10 metre x 35mm polyurethane, oil filled tube.
Oil type: ISOPAR M or Multipar M, odorless paraffin.
Pricing: 150m cable, Stereo A4 eleemnts and preamplifers, depth sensor £3,700
Designed by I.FA.W. for
use mainly with Benthos
preamplifier has proven extremely reliable.
preamplifier is encapsulated with 200mm
connections. Low frequency types are available on request.
Note: The output is directly coupled and must be decoupled when necessary. Always
ensure the preamplifier
battery is isolated from any other equipment being used.
Designed for use with ceramic elements such as Benthos AQ-4, AQ-2000, SRD HS-150 etc. Ideal for construction of multi channel hydrophone arrays. Low noise FET input with differential output capable of driving 1 Km of cable at full bandwidth.
The HP-02 is epoxy potted into a cylinder 70mm x 15mm dia. Standard flying leads for input 100mm and for output and supply 300mm. Also available unpotted
Several lead options are available
Belt clip battery
box for use with the HP-30 hydrophone. Takes 8x AA size batteries (battery
life mm. 120 hours). The hydrophone is connected to a waterproof socket, output
is via a 600mm cable
For use with the HP-30ST stereo hydrophone array or with two dipping hydrophone such as HP30 or HP40, the HP-25ST monitor box is suited for use in harsh environments such as RIBs and on boat decks. Features volume control, headphone output, gain switch, high pass filter, dual tape outputs, isolated computer outputs, high frequency click detector. Hydrophone connection is via an external waterproof connector and the unit is housed in a waterproof Pelican case. Requires 8x'AA' batteries which also supply the hydrophone, giving approx. 20 hours use.
Mono version available.
Frequency response: 10Hz to 300Khz -3db. Gain 30db.
Input: Balanced, 10KΩ impedance.
Headphone output: 150mW RMS into 32Ω, via 4" jack socket. Toggle switch selects _AF (audible frequency) for stereo channels or AF/Clk. for AF left channel and high freq. click detector right channel.
Tape outputs: 4KΩ impedance, via phono sockets. Dual outputs for AF and single output for click detector.
Computer outputs: Isolated outputs for stereo AF and mono click detector. AF frequency response 20Hz to 25Khz -3db.
High pass filter: 6 position switch selects 0,40,80,400,1k6 and 3k2 Hz, -6db.
Gain switch: 6 position switch selects 0,10,20,30,40 and 50dbs.
High frequency click detector: Range 20Khz to 300Khz, monitored via headphone right channel (mono signal).
Fitted in waterproof Pelican 1200 protector case. Size: 240x185x105mm (orange or yellow).
For use with the HP-30ST and HP-40 hydrophones, the HP-26 monitor box is designed for harsh environments such as RIBs and on boat decks. Features volume, headphone output, high/ low gain switch, high pass filter switch, tape outputs and high frequency click detector. Hydrophone connection is via an external waterproof connector and the unit is housed in a waterproof Pelican case. Requires 8x 'AA' batteries which also supply the hydrophone, giving approx. 20 hours use. Stereo version HP-26ST.
Size: 240x190x120mm Pelican 1150 protector case (orange or yellow available).
This unit has been designed specifically for use with the HF/3OST stereo hydrophone array. Particular attention is paid to noise immunity by using a balanced input amplifier and transformer isolated output for connection to a computer. In addition the HP/27ST features dual headphone output, balanced tape output and high pass filter (optional low pass filter is available).
Supply voltage: 10 to 35 volts DC, reverse polarity protected input via 5 pin XLR connector. Front panel power switch & LED.
Supply current: 200mA at 12 volts (lOOmA at 24 volts).
Input: Balanced input, gain settings 0,10,20,30,40,50 dB selectable on front panel switch, input via 1P68 connector.
High pass filter: 6db/octave selectable at 0,40,80,400,1k6 and 3 kHz via front panel switch.
Line output: Balanced output via 3 pin XLR connector. 50 Ω impedance, distortion less than 0.05% at 1Khz.
Trans. output: Isolated transformer output for computer conn. via 3 pin XLR connector. Impedance 2.4KΩ
Headphone output: Dual output via 1/4" jack sockets. 1 watt RMS into 8Ω total load, distortion less than 0.1% at 1Khz.
Overall bandwidth: 10Hz to 100Khz 3db with filter set to 0.
Dimensions: Housed In a powder coated steel instrument case L~205mm, D=260mm, H:70mm. or in 19" rack format
A two metre battery cable is supplied with each unit, fuses are fitted inside the box but it is recommended a 1 amp fuse is connected in series with the positive lead and battery terminal.
Optional 19" rack format
use with the HP30 hydrophones or directional hydrophones, the HP24 monitor
box is designed for harsh environments such as in RIBs and on boat decks.
Features include volume control, high pass filter and tape output. The
headphones output and hydrophone input are via external 1P68 waterproof connectors
and the unit is housed in a waterproof Pelican case. It requires 8x AA
size dry cell batteries or rechargeable NiCad or Hydride types giving approx. 65
hours use. Protected against reverse polarity connection.
40Hz to 50Khz
RMS into 32Ω,
via 1/4 flying lead jack socket.
Input 47KΩ impedance, 6 pin Buccaneer socket
3db at 1Khz, selected by front panel toggle switch.
impedance via phono socket. Use mic. input on tape recorder.
Size 216x165x83mm Pelican 1120 protector case 1P67 (black).
Directional Hydrophone POA
Send mail to
questions or comments about this web site.