Dayton AudioDAEX13CT-4 Coin Type 13mm Exciter 3W 4 Ohm

Great sound

This is a lot of fun!I soldered the leads to an inexpensive Bluetooth receiver/amp, and tried pressing it against everything in my basement and many things upstairs, just to see what it could do. It was ridiculous and fun.After spending a while goofing off, I cut a slab of styrofoam packaging material (a.k.a. expanded polystyrene, I believe) and smoothed it down. I attached the BT amp and this audio exciter to it, cabled a USB power brick into a switched outlet, and hung it over my workbench. Now I pull a chain to turn on the outlet, and my phone immediately starts playing music while I work.For the few dollars I spent on this thing, I love it!

Oh yeah. They are tiny, but place them on the right stuff and they fully come alive. I bought a small Bluetooth amp to use these with and made the panels out of foam insulation and they sound awesome. Super highs tho. Definitely want to run a sub of some sort with them. But really fun to mess around with regardless.

Connecterd to a Wurzhi Audio ZK-MT21. It's great to explore what materials give the best sound quality. Cardboard seemed pretty good

If you are unaware of how tiny 13mm is, take out a tape measure and look at. For their size, they have good power handling and don't buzz or rattle. I would recommend them for small applications. I mounted two of these exciters inside some old violin bodies that I had around, and they make for some very interesting speakers. They don't sound great for anything but violin music, but they are great for that!