SHOULD SPEAKERS THIS GOOD BE LEGAL? 

Was a super cool experience, and a very unique type of sound when heard in person. Thanks for the invite, came for the tech, stayed for the pizza.

Awesome project! Would love to try out those speakers. Small tip though: Your questions are very leading, thus making it quite difficult to extract common experiences from the answers of the testers. So maybe next time instead of asking "Does it sound better than a home audio system?" ask "What sound experience would you compare these speakers to?". Anways those are my two cents. It's incredible what you guys accomplished!

I built those following the exact steps in previous vidéos : it's been our living room sound system for about 2 years now. Here's my thoughts : Very good sound overall, definitely worth it, I've tested many setups (how many exciters on each panels, what kind, etc.) and there are a few improvements i've had to do. Don't paint those, buy a good subwoofer, don't put the sound too loud for too long (i've done techno party with it, at some point the exciters heat and get damaged), buy large and thick xps panels for the high frequencies or they will get too shrill.

I've spent a good chunk of my life around music reproduction. I've worked with sound systems, recording studios and am a bit of an audiophile. My stereo is probably (after my car and house) the most expensive item I own. I would love to see how people in the music industry rate your speakers and speaker setups. Most people can't tell Sennheiser from Heinz beans tins and friends are often favourable to your creations.

I would be interested in seeing a professional audio engineer test these. See how they stack up against some of the more expensive audio monitors out there.

About 38 years ago my Science Teacher built a flat panel speaker and the sound was absolutely unreal, my teacher explained how in the future every single wall or poster, like Black Sabbath can become a speaker. Needless to say it never happened but we had a whole semester studying these "Sound Walls" as they are now called.

In 1974 at 12 years old I discovered high end audio and it became my world, it was all I thought about. Over the years I read about unique innovations in speaker technology like this but yours are the first I've seen put to use, I'm impressed!

I had a Bluetooth shower radio that came with a action cup. By accident I placed it on the back wall of my fiberglass shower surround. The back wall has air space between the fiberglass and the wall of the house. The wall is 42” x 60” ( going from memory). It was AMAZING how much base it created. I love your channel. I had 2 professors that taught using your style of show and tell. THIS IS HOW YOU TEACH ENGINEERING!!

I built a pair from your first video and prefer them to regular speakers. In the single word your testers used- clarity. I have a strong preference for detailed music from banjo to string quartets so I typically stream ad free Venice Classical radio. That said if I play a CD on a nice Pioneer CD player I got from an op shop for $5 I can clearly hear the sound is better. So it ain’t the speakers! I’ve added various subs including one I paid $500 for. I’ll try your 150 Hz setting. I have decent mid priced Senheisers andHiFiman headphones and do not find the panel speakers inferior. I find running the signal through a DAC really helps. $75 KGUSS DAC, $150 SMSL Amp. Bottom line these are my favourite speakers ever and I been experimenting with audio since I was 14.

for anyone interested, the drivers are Dayton Audio DAEX32QMB-4's and are about 20 bucks on amazon

I haven't come back to this guy's channel for years... hilarious to see how much he's done. This guy has my respect. Works hard so he can play hard. 👌

As an audio/electrical/electronics engineer I will be building this amazing project! Class A amplifiers will be used for minimum distortion, I will be making measurements with Oscilloscope and my Bower mics to show how well it works. This is truly amazing. Thankyou for the inspiration! I can't truly show how impressed I am with this and this channel and all you do. You truly show your interest, intent and passion for nuclear, mechanical electrical and electronics engineering and other attributes. You remind me of myself!!!! I am so happy to see you truly devoting your life as I also have. I look forward to the video I make showing how amazing this is.

Dear TI, please do a video where you answer a few dozen of the great questions in the comments, in a rapid-fire fashion. There are some excellent questions here. So glad you released this update on the audio panels!

Should test this with a game (probably a FPS game) where the sound stage, direction, and distance volume matters a lot. Something that the headphones excel at and is often very hard to do without a lot of work with speakers set up.

This was such a wonderful video! Very informative and learned quite a bit of things! Also, the hospitality for others, providing pizza, a disco party, and even the small stuff "Let's get you something to eat" is beautiful. Made me smile a lot because I do adore such compassion for others as such. Continue being the great man you are :) And thank you all for what you and your team do.

Thanks to your original video a few years ago, I got badly addicted to DML speakers and actively followed some of the threads on the audiophile forums testing and evaluating designs. I like you, fortunately had access to wide range of materials to run my own (subjective) tests on and came to a few conclusions: 1) Pick repeatable tracks. Mine are: "Adagio for Strings" (low pitch Cello) , "Bohemian Rhapsody" (rock, electric guitar & high pitched vocals), "Refined Enlightenment" (high pitch violins), Romanza (Romance Anónimo, Spanish guitar), Above & Beyond - Alchemy (electronic house with vocals) 2) Every material I tried failed on one of those tracks, clarity, bass, vocals etc etc. But a few had standout areas, the answer was a combination of materials. 3) My personal favourite is a canvas picture frame, stretched over a wood frame, tightened with a watered down PVA glue wash and on the rear a 0.8mm plywood veneer sheet PVA glued to the back of the canvas. The exciter was mounted on a 3mm plywood disk glued to the veneer at 50/50 and 2/3rds. The canvas frame gives a love warm bass, and the plywood veneer and discs damp any unpleasant over vibration whilst preserving clarity. I am absolutely convinced, there is no "one best" single material for best sound reproduction, you need a mix of materials, then they easily beat anything else I have heard.

As an inventor of DMP drivers (see my patents), I found that the key was the BML force of the driver. The sound is truly immersive, for some environments much better than conventional speakers i.e. restaurants, offices, open space. However, I do not believe these will ever produce true high fidelity sound because of the phase incoherence in the radiation source.

Should they be legal? Of course not! There should be an entire department of government devoted to the licensing and regulation of speakers. What a question!

Thank you for inspiring a whole new movement in audio playback philosophy. I've followed your progression and built a variety of driver and panel combinations. I settled on .625 in thick high grade birch marine plywood. Installed 1 each 2'x2' and 1 each 2'x4' panel per side. The panels hung one over the other, linked by fine elastic cord through small holes drilled near the corners of each, 1' from the wall by shelving brackets. I have excellent response from mounting 2 of the EX32EP2-4 exciters per 2'x2' panel in series. For the 2-2'x4' I installed 1 each of the BST-2 Tactile Bass Shakers...yes, bass shakers. Spray painted front side of all 4 panels with truck bed coating leaving the back side natural. Driving the 4 panels with a Lepai Bluetooth stereo amp with 45w/ch into 4 outputs. For equalization I found the Timpano TPT-EQ7 handy because it has an adjustable Subwoofer output for augmenting tones below 50hz, with a 12" RCF powered unit. My fellow musicians and friends are amazed by the lively tactile experience across the entire perceivable audio spectrum. I like to listen with my back to them with the video display in front of me. Very much like movie theater/headphone presentation. Fun stuff for sure!

They shouldn't be legal... they should be "not illegal"! I watch so many amazing people on RU-vid, but I am more frequently blown away by you and your style of life than anyone else. An amazing man using his amazing brain for awesome things, all while teaching.

I love you so much just for drilling into so many young skulls the idea that YOU CAN build something, and you can build something BETTER than the sales margin filled plastic garbage you'd otherwise buy without thinking. I don't have an exact estimate but the world is going to be around 40% to 50% better because of examples like yours. The solution to our every common problem is trying and doing. Keep it up and thank you so much.

Love the Project. Inspired by the previous video, I was looking into using DML-Style speakers to power my living room. We experimented with different available materials in Europe. However, we noticed that while we can work around frequency problems with DSPs, we definitely need a high tweeter covering 6.5+ khz. Same goes for base < 150 hz. More problematic was that with very dense music the clarity is lacking. Its fine with classical solo instruments (Cellos and mid-to-lower woodwinds like Clarinets where amazing) + Radio. But romantic orchestras, hard rock and metal does distort too much. We could measure some of this with REW, so it was not subjective. We evaluated it as two classical trained musicians. Sadly, It was not good enough to be deployed. Now going back to a closed, DSP driven variant. I liked the idea of room layouts DML would open.

I am currently running my full surround rear and atmos system on these dml speakers. I love them. Crystal clear and inexpensive. Light weight to hang. They aren't the prettiest but totally functional. I haven't tried front stage yet due to not having an acoustically transparent screen yet.

Dear Mr. Main Presenter, I am in awe of you. The thought and detail you put into your projects is just amazing. Like in this video, you even made a base to hold the video tripod on your speaker scaffolding. If you were a teacher, you would be the most popular one in the school, and your class would fill up in the first 5 minutes of registration. It’s really frustrating for me, waiting for your next video to drop, having seen all of them. Would like to see more on rockets and drones. Your #1 fan, Me

Out of curiosity, run a long slow sine sweep of one of those polystrene panels from 100 Hz to 20,000 Hz, and have a look at the Lissajous curve plotting the output against the input. I have a feeling you'll find a frequency that is a garbled mess of a pattern (but still stable) instead of the ellipse you might expect.

I made 2 of these speakers out of pink insulation foam and added a free subwoofer I found in by the dumpster and they sound pretty good! I didn't realize I could use the dense acoustic ceiling tiles to get those low frequencies but I may do that to round out the frequency spectrum!

The super light weight coupled with with large surface area is entirely different than conventional speakers. I agree, would love to see a sound frequency response curve.

You are off the charts with your DIY builds! You really get into science of sound, as well as sometimes, it just sounds good. Love it!

I absolutely enjoy seeing how you present everything so clearly and controlled. I know this is not the topic at hand but I'm impressed with your emotional control.

I love how Alex runs/jogs everywhere. I was like this (many years ago). Ahh to be young again... Awesome idea with these speakers. It would be interesting to set up a true home theatre surround sound system in a living room with these. I imagine they would sound quite a bit better than any of the theatres I've been to. All the ones around here the audio is really lacking.

Thanks again for doing a video on the sound exciters. I was at loss for my surround speakers at home due to my wife claiming they're an eye sore. Since your first introduction of the foam panels,, I've since fabric wrapped two panels and hung them using translucent fishing line. Speakers are now hidden in wall art : ) Thanks a million !

I built a pair made from pink foam board at Home Depot and some exciters from parts express… absolutely awesome 👏 I use a Nobound miniature 50 watt amplifier. The sound is excellent. My Martin Logans are jealous.

I love it. I do a lot of remodelling, and almost never see any emphasis in peoples audio. Even if these don't measure super well, the fact that it is affordable and giving people a new or renewed enjoyment of music is a great thing. Some audio snobs might raise their nose at such a set up, but the testers' smiles says it all.

Living in a speaker ... what could beat this?! Great work TI !

It's fun to watch these videos again. I built a pair with acoustic ceiling tiles, painted them black with spray paint, and placed two drivers on each panel in series configuration, one in the direct center and one at the 2/5ths 3/5ths spacing. They sound great! They compliment my 2 towers, a center channel and subwoofer stereo system, and have a "gluing" effect as i call it. Without them on, you can tell where the sound is directionally coming from. With them on, it's clean, non-directional, room filling sound! The best part is that because it's omni-directional, you dont need to turn it up loudly to cleanly hear your material, but can also have conversations in the same room.

Excellent work, gentlemen. Your son Alex did fantastic work making sure the project ran smoothly. It's definitely a Proud Dad Moment, in my book. Congratulations you guys.

"We've done a large number of videos on sound." Yes, in fact that's how I found you. First video I ever watched was the building of those really cool panels.

You are like the new Edison. 1% inspiration, 99% perspiration. Thank you for keeping my brain cells active.

Good update and great to see another of your videos. This, for me, is exciting stuff! Thank you very much.

i love this channel so much. i cannot fathom how you don't have millions more subscribers. you've taught me, and my children, soooo many things.

@Tech Ingredients Wiring the drivers in series is a trick done in commercial speakers to improve the performance. It causes Mechanical resonance peaks to cause an increase in electrical impedance which reduces the output of the other driver. This has the effect of smoothing out resonance peaks to some degree. Since this design of speaker has a lot of (smaller) peaks, having the two separate panels of different materials (therefore different resonances) in series helps them smooth out each other. It might even help to position the drivers slightly different within each pair of speakers (but as with everything to do with speakers, the proof of the pudding is in the eating). Please do a waterfall graph for these speakers.

This has to be one of the coolest audio projects I've ever seen. Especially one like this that can be duplicated by just about anyone. Thank You!

A very long-awaited update! I made such panels from acrylic glass here in Ukraine, and the totally substituted my desktop speaker for more than a year now! Amazing! Please, more experiments with these!

I was so glad with the first video you made about this. and it so happens that you make your 2nd video on the subject on my birthday! Thank you guys!

Building a massive public art installation using a similar version of your panels. You two are inspiring keep it up. Glad to see you all back in action!

Having random strangers test these is one thing but having audio engineers test would be another. Also you'd have to not be afraid of copyright strikes. Let them listen to the songs they know/want. I believe the speakers work well but aren't going to beat out decent headphones or bookshelf speakers.

I think the next step is building a home cinema with it, adding a sub or 2 and testing how I stacks up... Awesome video, thanks!

I remember seeing conceptually the same type of drivers, "turn any panel into a speaker!", but it was just a puny driver with an aux chord. Then i saw your first video on the subject some years ago, and now this one. Thanks for the content!!

TECH: If you build a slightly larger setup to fit a king sized bed and add sound deadening circuitry to feed the amp instead (hacked from sound deadening headphones or elsewhere) you would have the ultimate quiet sleeping environment! Cool video :)

It might be more meaningful if you could offer the listeners two options, such as the ability to switch to a standard pair of monitors. Some pretty crummy traditional speakers with a lot of DPS work to level out the frequency response can sound fairly decent in an otherwise more natural environment, like an office. There are some brands (*cough*Bose*cough*) that I think are known for this. I imagine anything that is non-garbage tier will sound "good" to someone off the street. Most people are probably going to be quite fine with an $80 2.1 computer speaker setup in a near field environment like that, and without anything to compare, may think it sounds good to them. That's not necessarily a good or bad result. The warehouse environment is very unnatural and unusual, so I'm not suggesting people listen to computer speakers sitting in the middle of a warehouse without any panels around them, then compare to your panels that just happen to be active themselves, as I think the damping factor is the biggest thing at play due to the unusual environment you've chosen. I still would worry about modes in your material despite damping effect of the material itself since the further out you get from the driver the less coupling there is due to material flex, leading to ringing and phase shift. Something I imagine the average listener will not notice unless it is quite bad and probably measurable.

I made a set of these and hung them in my parents living room from the ceiling over the chair and couch and placed a sub in the corner. set up in parallel driven by a small Fossi amp off Amazon and they love it. Given the thin nature of the panels they take up very little space and flood the entire room with sound. For less than $350 canadian dollars I built and wired the entire system. Thank you Tech Ingredients! Keep up the great work!

I want to thank you for the amazing information you provide to your viewers. This is fascinating material. I appreciate all of your efforts. Many thanks!

I'll never get tired of this channel. Always a pleasure to watch. Later this year I want to build these speakers, seems like a fun, easy and useful project.

I can imagine frequency response being accurate around the 800 and 10,000hz range with the ceiling tiles and about the 13,000hz range with the other panels. Surrounded in such a small area makes listeners' reception less likely to be absorbed by the tiles before being heard. Think I'll order some of the drivers for experimenting in my 30x30 bedroom.wish me luck😊

A friend and I stumbled on some speakers like this from Magnepan called Magneplanars in the mid-70's. They were really nice. I suspect their price was a factor in them not becoming more widely accepted. I see that they are still out there online.

I love these videos because this guy talks at such a steady pace I feel like hes about to show me some wild experiment and then most of the time he ends up doing just that. the handheld cam always gives it a doc brown feel.

I had a costomer that hand made speakers, he even wound his own voice coils. He would come to your house and measure the diminsions of the room where the speakers were to be placed, he would prick thev walls with some sort of tool that measures humidity and other factors, simply write down everything and build speakers based off of all his information. His speakers were made from accordian paper and used custom Alinco magnets that were specially manufactured for him. Audio acustics is an infinite science, a very interesting subject to say the least!.

I followed your original video and made a quadrophonic setup in my room. Cut out the drywall behind it and insert Rockwool with a few inches of separation to give the waves some room to breath. I also did the same with acoustic panels all over my walls, also from the video you made. In addition, I've also made a 42% scale version of the Voigt tubes. You have motivated and inspired me with so many of your videos, thank you sir. I wish I could be your friend. By the way, I ran some experiments myself and found that contrary to intuition, thinner insulative materials gave better low end response than thicker pink foam board. I ended up spraying shellac (tried many clear sprays/varinishs) on dollar tree foam board and it sounds fantastic. Also stuck an exciter on a vinyl lawn chair and the sound turned warm, am planning on stretching some thin vinyl like a shower curtain over a wooden frame as a transparent dml, it should sound interesting to say the least.

I setup two of these panels for my living room home entertainment system. The panels are paper faced foam board. I have them hanging either side of my TV. I run a subwoofer for the bass and i think it sounds really good. My friend came over recently who is musician and was so impressed that he ordered some for himself. Are they top-quality studio monitors in a tuned studio space? No, but for the price, it is near impossible to beat.

A great video and channel! Such fresh ideas and out of the box thinking. Keep up the good work!

Excellent video! I am hoping for a part 2 for any new results for fitting this to my living room dimensions. I'm willing to get rid of all my wife's crap in their and panel all the walls with speakers if necessary. And obviously that will be necessary.

Great to see these DMLs growing! Please go in-depth with these - standardized measurements, comparison with commercial speakers, proper A/B testing in stereo setup, and get a pro audio engineer to analyze them if you can. It doesn't matter if they don't stack up as you might expect, we all think you already did a fantastic job in selecting materials and constructing them, any shortcomings will only point to possible improvements. Great channel, great work, great presenter!

I do enjoy this channel so much so I was happy to see this interesting approach using the 5.1 multiple driver technique in a smaller listening space where presumably being close to the panels you don't have to drive them very hard to get sufficient output . I have tried several of the parts express exciter units on both the polystyrene panels - 2X2 and thin 1/4 inch plywood 4X4 and 2X2. I thought the wood would be closer to tone a musical instrument than the plastic panel and it was. Acoustic guitars were quite good. BTW the results from mounting one of these exciters on a guitar it self is amazing. While I am sure the bass response on the larger panels is better than smaller ones the downside is that they resonate - plunk your finger on the panel and if you hear it ring and decay even a little, it will do it during excitation or musical input at various multiples of the resonant frequency's. Its frankly more than a little disconcerting and very noticeable at moderate volumes. More inert materials like ceiling tiles that dampen resonances or applying some kind of dampening material to the panel will also help with the resonances but ultimately also dampens all the frequency's making the output more inefficient. There is a French company what claims to have built speakers and tuned them to dampen all the resonances ( they also use tone wood, specific panel suspension and make musical instruments so maybe they know how ) but the speakers are stupid expensive which is not what anyone who watches this channel would pay for. I have found that crossing panels over at higher frequency's does reduce this resonance effect and makes it more listenable. I have also found that high frequency response can be quite peaky and does not quite reach the sparkle you would want from a good speaker. Suggest anyone who wants to try this get REW software ( free ) and a measurement microphone from parts express so you can run frequency sweeps to see the response and resonances. So to build a really good system capable of reproducing full range and taking advantage of the DML dipole characteristics - I suggest a large woofer in a open baffle cabinet - H frame, a DML radiator for the midrange and upper frequencies and a separate ribbon tweeter to pick up the sparkle. it is possible to tune them using active crossovers and separate amplifiers that are not expensive. If you would like to discuss the design you may contact me here - RBEK15@msn.com. My total parts cost for my these speakers is less than $500 including amplification . And the sound quality? 10X that - at least.

First time on this channel and I love how natural the presentation is

I clearly remember subscribing at 25000 subscriber's , and was shocked how good the videos were , I always knew it would take long to reach 1 million subscribers. Congratulations on your growth 👏 ✨️ 🙌 💛

I'm so excited to watch this! I've been wanting to make some since your first video. What are your thoughts on these as outdoor speakers?

I absolutely love this channel. Please continue creating this great content.

i just started to do a similar project based on your past videos... it's perfect timing for me ! thankyou!!

This is awesome! Would love to hear it. Have you experimented with having the front L & R panels angled in like traditional studio monitors? This would help with phantom center imaging from stereo information routed to those speakers. When mixing for 5.1 or atmos, most stereo tracks don’t output the mono information to the center channel. In audio for picture typically music is mixed to front L & R, and center channel is saved for movie dialogue. Upmixing stereo audio to 5.1 might be different though, not sure if in that process the mono information gets routed to the center channel or not. Great work! Pumped to see if you make an atmos version

I'm curious about the panels on the left and right channel directly facing each-other. Seems like this could cause some unwanted frequency cancelling. I think most audio is mixed assuming that the left and right channel are in front of you. I would be really curious to hear what it sounds like with 5 panels directly in front of you. 2 left, 1 center, 2 right. Repeat for the rear. Seems like the soundstage would be massive. I love these audio projects you do, thanks for all the info!

I am completely envious of our presenters level of education. I am greatfull to have stumbled across such refreshing content. Brilliant!

I just want to say how much I appreciate you, your time, your experience, and knowledge. It's not easy to find high-end information that is interesting and applicable. I could go on ad infinitum. I came across your channel when my AC went out last week just when Alabama started a brutal heat wave. I'm tired of the 400 dollar service calls that just end in them saying you need a $6000 replacement. NO!! I Need salt water and pvc!! LOL. If I can recommend future videos, it would be more along the lines of thermal management around graphene and heat pipes. MORE MORE MORE!!

Many long years ago we played with driving sheets of glass and the results were interesting to say the least. The acoustic characteristics varied with time. Fresh glass sounded very different to glass a couple of years old. Also if the speakers weren’t used for a few weeks, they’d need to be driven hard for a few hours to return to the same state they’d been before they were rested. The tweeters were fascinating: Two piezo transducers glued to opposite sides of a Ping-Pong ball. The 360° dispersion created brilliant sound-stage. Unfortunately, every so often one of the piezo devices would explode and so the tweeter would need to be replaced.

Love this channel and the content you put out. Just wondering, for the purposes of testing, since audio people like and reference equipment to specific piece/s of music they like, you could test the speakers with their choice of music and so long as it is not included and broadcast in your videos, then copyright isn't an issue. That way, with familiar music, people are probably better able to discern differences between their existing equipment vs new.

Now, that's the way to have a party! Pizza and great sounds with a light show too! PARTY ON!!!

Am looking forward for this video! Its gonna be good! Loved your previous video on those speakers before! 😉

I've made these type of speakers for my office and they're awesome!

For real, call Linus (ltt) tell him you have a video idea for an upgrade to his home theater system

Reminds me of Electrostatic Loudspeakers (ESLs): There is this loudspeaker that looks like a membrane, and the sound comes from all the surface of the panel. Out of this world!

Thanks for all your work on this subject.

“Sonarworks SoundID Reference Measurement Microphone” is a microphone that when paired with the Sonarworks software uses an EQ to make a completely or close to as flat as possible frequency range. I think if you used this microphone which is commonly used in professional mastering studios calibration for music production it would give you amazing results and insight into where frequencies are building up. It would also be interesting if you could find a mastering engineer locally that would be willing to come sit in the box with a trained ear and tell you if this could be a substitute for studio monitors

Would really like to know more about the rest of the setup, amps used, etc. Teasing the idea of making a gaming/theater/vr room in a spare room and want to test these out for myself.

One of the, if not the best, youtube channel ! Thanks guys for your good work !

Mahn...I love your presentation skills...Really awesome!

Seems really interesting, but wouldn't a pentagon shape be more optimal for the enclosure than a square shape (for sound immersion and avoiding comb filtering, etc)?

Cool setup, I need to get around to making some and testing them in our anechoic chamber. I'm curious what their directionality is like and if you could optimize a 3d shape to counter modes on the panel. Constructive criticism intended. To really get a good comparison an A/B would be cool to see. Also doing it as 5.1 to compare to their existing headphones or at home stuff it is a hard comparison to draw because most people don't listen to music in 5.1, and by up mixing you will inherently get better feedback due to how we perceptually weight spatialization of audio psychoacousticly. Head Acoustics released some cool data on this.

@Tech Ingredients I love the expansion of using panels. I had not the same system but used my desk to mount the little buggers around using my Desk (top, sides, even the drawer holder. People would always be looking for where the sound was coming from.

U R the Words BEST PRESENTER, most Eloquent and Knowledgeable. BRAVO!!! 👏👏👏🙏

I remember squinting my eyes when in the second tutorial video you brought out acoustic ceiling tiles and said they work well as speakers. I thought to myself: aren't these made to absorb sound rather than produce it? It's very interesting that they do double duty in this setup. I'm tempted to make a set of these, maybe two channels is enough, and put them up in my bedroom to use them at low volume, because in my experience larger speakers sound better even at low volume. And besides, they look cool! Thanks for the episode.

The experiment was rigged with pizza I don't believe it. Y'all always surprise me with these great projects! Good job guys, I love this channel so much

I like all your videos on sound walls. In fact, reviews in Amazon selling the DML’s point to you as inspiration in making these speakers. Great job, keep up the good work!

I will never get tired of your into to your videos "**smacks. breaths in**.....Hi"

They do sound pretty amazing for what they are (I've built some - I've used Tectonic exciters, cheapo BT amp and insulation panels, its like 25eu for everything), but I wonder how is the imaging on these - multiple panels, not exactly concentric to the listener would wreck havoc in time domain.

I want to see 1000 dollar version on this setup and also how would a wall size subwoofer sound like, great video!

I can really see this being useful for places like yoga studios. They could line the walls with a few *dozen* sets, then play back B-Format audio of various relaxing locales to really place their clients in a mountain meadow/on a quiet beach/etc.

Thank you for yet another fascinating and informative video.

this one is pretty neat! i would love to try this one myself,, is there a parts list somewhere for it?

Imagine playing Escape From Tarkov with these covering an entire room with a Dolby Atmos deck. PTSD simulator 2022!

Haven’t seen your videos in a while but always a pleasure to see

I really liked that you gave your participants food. Cool project!