LOM Geofon DIY kit is in stock, and has a better performance in basically every spec compared to the cheap aliexpress unit. It is also omnidirectional, which makes it far more useful for this sort of thing IMO. Disclaimer: I am the designer of Geofon:)
Regards,
Jonas
21/05/2025 8:22¡¢underwood via groups.io <underwood.de.vu@...>¤Î¥á©`¥ë:
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Hello,
I've watched some videos, featuring the geofone. The main focus of the geofone are the low frequencies when I get it right. As the lom gefon is always sold out and very expensive, I looked to some cheap seismic sensors for DIY. P
Is the geofone housing metal??
greets
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Am Di., 20. Mai 2025 um 09:37?Uhr a xD n
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small correction ¨C Geof¨®n is not piezo based, but it has a geophone element ¨C coil suspended on springs around a magnetic core. I would also try it for this project :)
Regards,
Jonas
On 20 May 2025, at 5:53, DF via wrote:
LOM Geofon is a magnetic piezo mic that could be attached to a steel plate or a stake driven into the ground to pick up what's happening beneath the soil.
I used one of these very sensitive vibration transducers to pick up the sound made by a tree rubbing against a TV cable that ran from a pole to the side of my house - when the wind blew, the cable turned into a giant violin string, with the tree acting as a bow when the wind was blowing. I had done other recordings, but the Geofon (mounted magnetically to a fender washer I screwed into the wall near the sound source) captured the sound brilliantly.
I'm really glad I got those recordings last year, before a tree company came and trimmed all the trees. Alas, there wasn't enough vegetation left on that cedar tree to move it substantially this winter, and my "moaning house ghost" sound may be gone for good.
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Good luck with this *unusual* recording project!
