many thanks George Vlad!!!

filmed in Brazil, indeed.

You can use it directly on the Zoom H5, but you could use an impedance adapter too. I'm using the HOSA adapter, model MIT 129, but I can't be sure how much it's better or not than the zoom H5 directly.

The problem with piezo guitar pickups and piezoelectric crystals is that they are not well matched to typical audio inputs. By their nature they can generate a lot of signal, but they cannot drive a 50 kilohm typical line input. The pickup needs to work into a much higher impedance, typically 1 megohm or so. So what to people do? They go and plug a piezoelectric disks output directly into the line input of their recorder, typical impedance 50k, or the plug-in-power mic input of their recorder, typical impedance about 7k, and they start to bitch and moan that this damn thing sounds tinny. Which is does ! But they don't understand why! The reason why these devices often sound tinny is because the piezo sensor presents its signal through a series capacitance which is small, typically 15nF or less. When wired to a normal 50 kilohm line input this forms a high-pass filter, which eliminates the bass. Solution: github.com/Supermagnum/piezoelectric

The sound of " Sleepin' wit da fishes " !!!

indeed, it's a good way to get more signal, using 2 piezo sensors

Well, you could use a piezo as a speaker, indeed, and probably underwater with this method. But I guess the frequency response will not be very good, and the volume probably very low.

Você pode me escrever aqui felixblume.com/contact

I think it should be enough.

Yes, XLR Cable works too, then you have to connect pin 1 and 2 only

I would recommend to use a copper tape, which is much easier to use and very thin. But in any case, I don't think the copper foil could affect your signal.

hi felix, what is the purpose of copper foil? edit: ah its for shielding.. thanksss

Acho que a cola quente pode ser muito dura... o silicone tem a vantagem de ser menos duro. Mas talvez funcione da mesma forma, ten que testar!

They give some "weight" so the hydrophone is not floating... but you could anything else to give some weight.

@@felix_blume Great! Thank you!

I'm not sure... I've been trying and it didn't work so well with aluminium... But I would recommend a copper foil tape, which is much more easy to manipulate (and cheaper).

@@felix_blume why do you need the foil at all? Because you never solder anything to it. Is it for shielding?

@@yDeathAngely It's for shielding. Any metal box or foil that is conductive works. Just check with a ohm meter that there actually is conductivity if layers is used.

@@felix_blume Aluminium or copper, it really does not matter. Just be aware that the aluminium or copper foil or tape may be covered with some stuff that hampers the conductivity. A ohm meter will absolutely discover that.

Hi Marc. I'm taping the piezoelectric sensor, so it won't move while filing the lid with silicone. The full list of things you need to buy/use are at the beginning of the video, and on our website saralana.xyz/hydrophone or felixblume.com/hydrophone/

@@felix_blume Cheers!

You can find a local reseller on Plastidip website plastidip.com/