DAEX32EP-4 Thruster 32mm Exciter Speaker 40W 4 Ohm

I bought 7 of these for a complete surround sound system. Yes, i got the idea from Tech Ingredients on YouTube! I was initially not even remotely happy with them. I tried using them with the 24" x 24" foam panels you can get from the big box stores. The sound was really hollow. Even paired with a good quality subwoofer, there were a lot of frequencies missing. However, i realized two things - first, it was partly my fault for how i was mounting them. And second, they work way better with the acoustic ceiling tiles. In the picture, you can see the front five speakers - mains, center channel, and the "height" speakers for atmos. I also have another pair of them for the rear surround, mounted on the ceiling above the couch that viewers will be using. Everything sounds amazing, given the price. I love the way they look, and although the sound is not quite perfect, it's plenty good for my setup as a second media room. I bought these things on sale, paying $20 something for each. The ceiling tiles are $20 for a set of three. I made some mounts out of plywood with a little accent strip of scrap purpleheart. The tiles are hanging on some cheap black monofilament. So the entire 7 speaker setup was only about $200 dollars. Maybe $250 if you include the speaker wire and the paint i used. This was a very satisfying project, and was absurdly easy. The speakers sound good, and really fill the room with nondirectional sound. The frequency response is not perfect, but there are lots of things you can do to improve that - specifically by adding additional panels of different sizes and shapes down the road. If you want a weekend project to make some great conversation starting speakers that sound pretty great, buy these right away. I don't think you will regret it.

Hab das Teil als ABS Feedbackgeber an meinem Pedal. Funktioniert einwandfrei und gibt den Effekt gut wieder .

It's amazing that you could turn anything into a speaker , found these after watching a YouTube video

浴室にスピーカーを付けたくて、防水仕様の天井付けスピーカーなど探していましたが、ユニットバスの天井に穴を空けるのを避けたいのと、スピーカーが乾かずにカビそうだったので、エキサイターで天井を振動させることにしました。 エキサイターはユニットバスの天井裏に貼り付けてNobsound製NS-01G MAXにスマホをBluetooth接続して駆動しています。 ユニットバスの天井は剛性の低い鉄板に断熱材みたいなのを貼り付けた構造なので、振動板として使うと、いろんな固有振動を拾って変な音になるかも、、、と警戒しましたが、案外悪くない。鉄板の剛性の低さがf0を下げたようで、低い周波数が出るし、変な固有振動は断熱材の減衰で抑えられたみたいで想像以上に良いです。 調律されたスピーカーのような歯切れの良い音は期待できないものの、浴室の視聴環境は音の反射が大きいので気になりません。 試しに5Hz～16kHzまで正弦波をスイープしたところ、20Hz付近では天井が振動しているのを触らずとも体感できるし、50Hz付近に1つ目のピークが発生。その後 約10kHzまでは、いくつかのピークを伴いながら発音し続け、それ以上はだんだん聞こえにくくなる特性でした。特性はエキサイターを貼り付けた場所によるので、あくまで"うちの場合"です。 今回、エキサイターを２つ使い2chステレオ環境にしましたが、エキサイターが１つの時は聞こえていた周波数の音が左右２つ使うと小さくなる現象が起こりました。 おそらく天井の振動特性が悪さして周波数により、位相が反転するのだと思います。エキサイターを貼り付ける位置を調整すれば良いのですが、位置を変えれば他の周波数が影響受ける可能性があるし、現状でも液晶テレビやポータブルスピーカーの音より良いので、このまま使ってます。 エキサイターで天井をスピーカーにする都合、ユニットバスの天井裏にも同じだけの音圧が出ます。ユニットバスの天井裏に２階の床裏が見えている場合や集合住宅の場合、上の階の床下から音が聞こえる可能性があるので注意が必要です。

This product is definitely worth the purchase. I recommend this product to everyone. You will not go wrong. I have built 6 DML's (panel speakers) and friends and family can't believe the quality and loudness of these little units. I have orders to build more speakers. Even total strangers have heard my system and they want me building them a stereo system. One more thing...the Fosi Audio amp (you can purchase these amps here on Amazon) is what I use to power these DML's. Remember... match the exciter with the amp before you purchase. So don't wait for Christmas...MAKE YOUR PURCHASE NOW BECAUSE IF YOU SNOOZE YOU LOOSE!!!