Dayton Audio DAEX25 Audio Exciter Pair - Sound Exciter Pair Audio Transducer - 5 Watts RMS, 8 Ohms Impedance - 2 Pack - Turn Any Surface into a Speaker System

Quality sound, Quality performance, Easy to install and can be placed anywhere.I used the end tables, my coffee table and then put together to pieces of decorative wood art behind my sofa to make the full spectrum of sound. They work perfectly!!!

These are really fun - you can turn any surface into a speaker. I mounted a couple in the attic on the reverse side of my ceiling drywall. While 5/8" drywall clearly isn't the best medium for these, the sound is still quite satisfactory. Bass is particularly rich, while the treble has a bit of a "tinny" sound.I did have some trouble with the attached adhesive pads on one of the two, which refused to stick even after thoroughly cleaning the area. I ended up gluing it with Liquid Nails, which appeared to do the trick.On a medium such as glass (the key is thin, light, and rigid), you're likely to get much better sound quality. However, it's still a fair bet that these will do better in the bass range.

I haven't put these in their permanent location yet, but I have tried these on several different types of surfaces. I would have to say that I am definitely pleased with my purchase.Note to future buyers, you will definitely need a small Amp or EQ to help get the sound you want out of these. I purchased the small EQ that was recommended and it works well. For supreme sound, I would recommend running these both off of 1 channel and use a slightly bigger driver on the other driver to add more depth in the quality of sound. You don't need a lot of power to push these so they are perfect for camper installations. Added bonus is that most campers are perfect surfaces to amazing sound projections.

If these are place on something thin and hard, like tempered glass, they sound great! Careful on placement, it's possible to get some resonance in your medium that won't sound great in the audible range so test placement might help (generally asymmetric placement too) I stuck them on some thin tempered glass about 1/16" thick and they are powered with a little class a amplifier and they place wonderful music in higher frequencies like classical violin, gypsy jazz, Etc. Since the medium I choose to stick to is hard, not much of a chance for bass and lower notes so some music sounds horrible. Best to pick your medium off of the type of music. Just remember that this item has to be able to push a compression wave into the medium and if it is soft, it will absorb the wave versus propagate it. I would buy these again if I needed more tactile transducers. They also make tactile transducers purely for bass.

The media could not be loaded. I purchased 2 packs to use with two 2ft x 2ft sheets of polystyrene project board and 2 sheets of honeycombed cardboard (also known as palletboard). The exciters work well and the sound they produced is nothing short of amazing. They are wired in parellel producing a 4 ohm load on my Denon receiver. Volume levels needed to produce audible sound are around 30 on a 1-100 scale and work well up to 60 or so. Anything louder seems to invite clipping as these speakers are rated for only a small 5 watts of power. During setup of the Denon I did not notice that my receiver switch my stereo speakers from small to large. Playing “Take Five” at around 65 clipped one exciter and rendered it useless. Since then I’ve been ginger with my settings and have played them for many hours without issue. I’d highly recommend these exciters for small areas or low volume applications.

With these devices you can mount them on almost any surface to turn it into a speaker. I'm having fun experimenting with these mounted to some eighth inch plywood panels about 2 feet square and have them hanging in the living room. They make pretty good speakers. They need a little tweaking so with the second pair of these exciters I may add them to the panel in an offset position to see what difference it makes to the sound. There are several YouTube videos showing various ways to use these and make speakers out of glass windows, ceiling tiles and even walls. There's lots of possibilities.

Does its job perfectly. Plug and play but I agree with other, the price is steep but though slightly more affordable than the Logitech adapter.

I've read quite a few reviews on these. I think that some may be expecting too much from this item, and are expecting something magical. I was a bit skeptical that something this inexpensive could actually sound pretty good considering I was using these on a surface completely dislike a speaker cone.I put these in the lower corners of the glass pane in my shower, along with a Lepai amp connected to my cell phone. After tweaking the EQ on my phone, I'm deeply surprised how good it sounds, and the bandwidth I get... including low end extension, down into the mid 30Hz range. If you get too crazy with the volume they'll let you know, but get loud enough to hear clearly over the shower at least.Depending on the substrate they're stuck to, you're gonna have to EQ these to get them flat. They don't break physics for you. But once you do EQ them they're well worth the $25~ paid.