I just want to say, thank you for putting out this information in a very concise and digestible format. This type of information is usually behind paywalls of universities and online courses, but it's here for free. Thank you

By far the best video I've seen on this topic!

This was a very well made and informative video. Many thanks for producing this!

Killer vid ... real world knowledge and you are also inspiring people to do things the right way ... cheers

I had studied this in-depth some years ago, but needed a refresher. You did such a amazingly useful job of covering virtually all of the key areas- thx!

Just mounted a whiole bunch of broad band absorbers in my homeoffice / studio with great results. So, all of the theory already there, but I enjoyed this comprehensive video, using such a clear and nice language and intonation. Wow!

that two-camera setup totally blew me away

Most helpful video I've come across on the topic thanks a bunch

Though this is obviously an overview, I will say that he is a coherent speaker and he is providing a well balanced view of the problem and the solutions. I've gone over-board in the past on treatments, and the results are amazing in terms of making a small room sound like a vastly larger room. I'm sort of starting again after many years. As he did, I previously did DIY but this time I'm buying (GIK also in my case.) I had enough 703 in my previous room to give everyone on this continent black lung, but it measured stupidly flat for a normal sized home studio room.

The BEST of Acoustic videos on YT. 👍🏼

Fantastic video! I learned a ton. Thanks for this.

I'm a retired principal engineer - worked my way up to global distribution projects since the early 2000's. I really enjoy your channel, Justin: you are a concise speaker and a very very good teacher. I still mix thru my old KRK Series 2 V8's and will be interested to download that phone app. Thanks, and keep up the important work of sharing the light that is music!

We made 8 acoustic panels for $300 mdf plywood cut into 3 in and 4 in panels, mineral wool, breathable weed stopper to encase the panels and finished with a cover of felt

Looking to do some acoustic treatment in my home studio soon. Appreciating these videos very much. Mahalo!

Most comprehensive video ive seen on accoustic treatment. Thank you!

Fantastic stuff, thanks for your help. Love your videos.

my bass traps are 15" thick all around. Even my ceiling traps are 15" thick. I used light insulation for lower absorption... my room was very dead after so I installed wooden slats for some high frequency ER...overall very happy with it.

Priceless information, indeed; I’ve seen people spending a fortune on equipment, mainly expensive speakers and neglecting on this very important part of a studio; thank you, for making this available!

this video and your speech patterns are so hypnotic. im entranced

Awesome Video thank you very much!

Fantastic video! Thank you so much!

Great video, thanks for that!

super useful video. thanks!

Now I'm really diffused. Great video!

Started out building a while ago i got my first reflections on sides ceiling and back wall coverd and it makes a big difference next up il build some bass traps TNX for the additional info really liked you're video

When I was designing my room, I knew the centerpiece would be the diffuser, which is 30 white birch logs cut in random lengths from 5' to 8'. Not only does it capture the eye and make the room more aesthetically comfortable, but it works great. Even before I hung any absorption people commented that the room sounded more controlled. I think it's a great diffusion technique, it's truly random.

Thank yoooou! Honestly, ninety-percent of this I already knew from various other sources, but *finally* someone blooming explains diffusers properly! Everyone else has just been, like, "use diffusers? why? er... because they're good" haha! /Subscribed!

Great info, thanks!

Great editing man I watched the whole video an didn’t realize it was 24 minutes long lol 😂. Very informative

Excellent Video !

Love the video, very informative! There’s so much misinformation about acoustic treatment online

Great video

Thanks for the video

Thank you so much bro!

Great video and nice tips. Just to get some clarity or anyone who wants to comment on where to place the panel using the mirror technique. You sit in your seat at the point where you would normally sit and mix right? Then someone takes the mirror around the wall and wherever you see a speaker is where you would put a panel? Did I get that right?

I wish I could do diy but I’ve had a stroke, it’s difficult for me to do this. But I’m glad that monitors are smart and they can tell me what’s what’s.

Great information 👍👍

Great advice! You definitely don’t want a totally dead room. If you’ve ever been in an anechoic chamber it’s almost unnatural... pretty strange actually. 😂 Question about base traps where the walls horizontally meet the ceiling. How important are traps there. You’ve mentioned vertical bass traps , but not horizontal traps. Thanks!

Justin, thanks for the valuable info. I have a couple quick questions : (1) what do you think is the general effect and severity of having a carpeted room (as opposed to some type of flooring)? (2) how do you recommend dealing with windows, i.e. should they be covered with a specific window treatment? Thanks.

Love the burgundy color of the panels.

a bookshelf is a great diffusor aswell!

Justin is excellent.

Justin got all the free game

Hi Justin, here is an excerpt from an article I wrote once that viewers might find helpful. It outlines the sound absorption properties of a 703 panel "The sound absorption properties of a two inch 703 panel as documented by Owens Corning are as follows. The number following the frequency is the sound absorption coefficient when the panel is mounted against a solid backing; in this case the wall of your studio. The Noise Reduction Coefficient (NRC) is an average (rounded to the nearest multiple of 0.05) of the sound absorption coefficient at four different frequencies: 250Hz, 500Hz, 1000Hz, and 2000Hz. A coefficient of 0.00 equals no absorption, 0.50 equals 50% absorption and 1.00 equals 100% absorption. Because these figures are based on measurements and not percentages, it is possible to have a number greater than 1. But 1.00 is considered perfect absorption with no reflections. 125Hz 0.17 250Hz 0.86 500Hz 1.14 1000Hz 1.07 2000Hz 1.02 4000Hz 0.98 Noise Reduction Coefficient (NRC) 1.00 The chart show us a two inch 703 panel is great for absorbing your mid and upper-mid range frequencies, solving problems you might have with reflections of those frequencies bouncing off bare walls. It also shows that it does next to nothing for low end frequencies, meaning they should be used in conjunction with bass traps." Michael Nickolas

Hi. where might i find out more info about making tuned bass traps? studied a bit years ago. was looking at various densities of rigid fibre glass panels. they give specs for noise reduction in db but nothing about mass/resonance for particular frequencies i may want to treat

I taped a single piece of egg holder foam to my wall. 10/10 won a Grammy recently

Justin, great video. I'm in need of some help setting up my KRK's. I have x2 7'sG4, x2 8's G3 and x1 S10. What's the best way to connect them? I was thinking 8's with the LF turned down and the 7's running via the S10 sub with LP frequency filter. Or should they all run out from the Sub even though the 8's are the other end of the room?

How do u feel about Rockwool insulation vs fiberglass?

Hi what about speaker isolation on soeaker stands does it help improve the sound? Thanks good information btw.

Are diffusers recommended for small spaces? I have a fully treated 13x13 box room

I liked your real world person approach. Not everyone can afford to spend thousands at the drop of a hat. Very realistic approach to things! So many people seem to have lost touch with reality…

Do the bass traps in the corner need to go from top to bottom? Also, I have a window and closet in two corners of the room. How would I fit the bass traps with that set up?

Hey man, thank you for this info! Super helpful!! I built my own little studio but I’m having problems with 150hz. Every time there’s a low D (Bass or piano), the room gets blasted with a huge peak of frequency! Any idea on how to solve that? While recording I just eq that freq down, but it doesn’t help my mix

I am primarily a bass player, so I deal with a lot of low frequencies. I have one half of a basement with semi-open walls in front of me, and a window behind. Can't avoid that, as family uses the rest of the room. Any ideas? It's a rough room! I mostly record and mix with headphones as a result. And I love the videos. Great job!

This is great

Hello, I saw some of those Diffusor but with more of a Art design VS something like yours that look more of a calculated design is there a big difference and can we find a calculator for Home Made DIY project.

My method is cheapest. Just hang curtains. You can adjust the absorption by opening or closing the curtain

Excellent advice, love it love it, love it.. Thank you Regards Antony Warrington England..

Got a 15 x 12 x 8 mixing/vocal room. Where would u Not put the diffuser/absorber combo panels? Ceiling/wall corners, side wall corners, or behind speakers?

I don't get how to situate in the corner the Bass Trap of 6 inches with the air gap of 6 inches too. Because for example, when you put the panel of 6 inches across the corner (like "normal") there's still an air gap, because of the shape of the panel, there's a "little" triangular air gap by default. That confused me on how to consider to mount the panel with 6 inches of air gap Should I build a panel like the one you showed, with the frame 'wider' (frame of 12 inches deep) so there's 6 inches of roxul or fiberglass and the 6 inches left, So I mount the panel in the corner (like "normal") together with the wall, doesnt matter what up with that triangular air gap by default haha there's going to be a correct panel mounting or if not I'll appreciate your response thanks

I want a more live room for recording drums. That my studio's main use, so diffusers are probably what I need to focus on more than absorption.

Bass traps *are* thick broadband absorbers. What you're referring to are limp mass bass absorbers. They function as tuned bass traps, but aren't what people generally mean by the term.

Hi! My celling is 8 foot from the floor, and my main issue in my room right now is at 100 - 200hz . Is it ok to mount a 2" lets say 4" away from the celling? I know there is a compromise but that 100 - 200hz region is so anoying. thanks

What is your general opinion on Studio Setups in Living Rooms that have Carpet with Underlay, Thick Curtains & Soft Sofas with Cushions, can these go some way to addressing these acoustic issues? I am on a limited budget and have just gotten my 1st set of proper Studio Monitors with some stands and de-coupling pads as part of a bundle. I have placed my monitors in an Equilateral Triangle, they are placed at one end of the room (where the Front Window is & are in the Long-Throw position of my rectangular room.

Good stuff. I just have a budget home studio for personal enjoyment and mostly play around with audio processor plug-ins, etc. I regret I didn't know anything about acoustic treatment 40 years ago when I was working in bands full-time. What got me hooked on acoustic treatment was when I started getting enough treatment in my room to affect the low frequencies. It was like a little bit of magic when the lows were under control. As many do, I wasted money on too much foam, but the old foam got stuffed into large burlap bags and became part of the low freq. absorbers. Amazon used to use "cotton wool" made from re-cycled blue jeans to insulate their delivery totes for frozen and refrigerated food. So, I got more absorbers just about every week with my grocery delivery. The cotton wool makes a very effective absorber and is not irritating to humans when handled. GIK makes good stuff. I have a couple GIK corner traps and some 6-inch traps with scatter plates similar to yours, just a different pattern on the diffuser. "Acoustic Fields" makes some good foam and excellent carbon-based low-freq. absorbers. I can't justify the expense of those carbon absorbers for myself but it is still nice to know what is currently available. ....enough of my rambling.

Your videos are super informative AND I am also super impressed with your speaking/presentation style. Did you take a class ? Your style just seems so polished. There are so many other videos I can’t watch because the way they speak drives me insane, usually either because they are too monotonous, too lazy with pronunciation or they have this sing-song approach to speaking that sounds like a child reading a book.

why do I need treatment for studio speakers and not for external pc speakers? I just got krk rokit 5s for my bedroom because they have front ports, but the eq is really off, where as the pc speakers that connect to my laptop via a 3.5 cord sound totally fine, no "reflections" not that I can hear anyway

I love the smug look when he switches to the side camera lol

What about 2” thick foam panels and traps?

so the build up happens with directional low freq? seems most treatment only does down to around 50hz

Hi Justin, I would absolutely love to make those panels... but there's an information out there that the fiberglass can be harmful for your health as it hangs in a room where you breath every second. However, those can be just myths. What do you think about that from your experience?

Joe, are you saying that ceiling clouds should be 6 inches or 4 inches?

just thought Trent Reznor explains how he built his studio :)

Justin, how do you feel about the health concerns of using fiberglass installations? If the fabric covering it is airtight, then it acts as a reflective surface and doesn’t absorb sound anyway; too loose and then fiberglass particles can become airborne and affect your lungs....

So in a room like the one you showed in that overhead view, if you were to record drums, where would be the best place to put the drums?

Everything mentioned has to do a listening room. Is this room not for recordings or is it possible to do both in the same place?

We say hay from Cuba 🇨🇺

Bring back the beard! Haha great video per usual

I heard that curtains are a great budget way to acoustic treatment a room, is that true? how would that work?

Justin, awesome video- great information. This topic is so often over looked by recording enthusiasts. I know this is not supposed to be a plug for any particular treatment companies (different story for the speakers) but I HAVE to know why "Acoustic Fields" isn't mentioned. They take a very, for lack of a better word, superior stance on this subject. Is it because their prices are so high? Or simply because you aren't familiar with that company? I ask because you are very knowledgable and your opinion on this matters to me as far as investing in treatment. I hope you find the time to respond to this. I love the videos and podcasts, thank you for sharing your knowledge.

Simple corner treatments (for bass) and acoustic panels above the desk can go a long way.

Are the GIK Panel colors in this video Burgundy or Deep Burgundy? Thank You

WOW - Someone that understands acoustic treatment vs sound proofing. I see so many negative reviews for acoustic panel etc... where they thought it would soundproof a room. Your right, you have to basically build it into the wall or build a secondary wall with a gap. Kind of like insulating a house. I've got some Kali IN-8 V2's coming. Not for a studio, just built new PC, 4K 120Hz TV/Monitor and some butt kicking headphones. So bye bye Altec Lansings (bought out or folded). I can EQ these for my listening preference.

A link to the EQ part of this series?

What is wrong with an overly "deadened" sound due to sound absorption?

How about the ceiling?

People who listen to music for free don't deserve better quality recordings!

Hey, I notice that you have GIK 4Alpha in your latest videos. I do notice you have other panels which I believe are just absorber. If you only have 4 GIK 4Alpha panels I wonder Why? Are those panels helping you in anyway with diffusion behind them? I believe you have 8 regular and 4 alpha The reason I ask cause I currently have GIK 244s 6 Scatter-plate panels. I feel like they focus more on absorbing instead diffusion. I record and mix in my room. I have let some engineers listen to my vocals and they say it was a very good vocal recording and it sound. I feel like it's probably to dull and I have problem around the 100-600 Hz where it can sound boomy and boxy. I was thinking about getting GIK Alpha series to see will the make a difference in that aspect or I have going to buy 4 Q7D Diffuser to replace the 6 scatter plate. Can you give me some advice??? GIK said if I get the Alpha series it would be subtle, now I don't know if that true or a sale tactic but I want some honest help cause he recommend if you get alpha go for the 6Alpha. I currently have 2 GIK Monster Trap 6 GIK 244s Broad Band 6 GIK 244s Scatter Plate

How many turns did you do on that chair ?

Does someone need acoustic treament in his/her youtube studio though he/she uses lavalier microphone or case is almost similar be it lavalier, shotgun, dynamic or any other microphone? Or simply...does lavalier microphone grab less echo compare to any other microphone? Thanks

Man I love all your vids. Articulate, informative without clutter. Great job! However, I had to pause this one and tell you the unnecessary camera switching is a distraction & a bit annoying/nauseous for me. It’s one thing when one is showing different angles of a piece of kit etc but I think you believe you are making it more compelling & interesting, you’re NOT! You already have all that in the bag by just talking straight into one cam. FANTASTIC channel & AWESOME content but plz at least do the cam switch “less” if you insist on doing it at all. Thanks m8 & keep up the great work as your one of the best on the ‘tube!

That turn tho😂 2:12

Hi, what surface is best to place studio monitors on

Are the diffusers and bass traps randomly placed in your room?

I just put a blanket on the wall and i instantly got bass in the room and that slap echo sound disappeared. I can hear frequencies in the room. Playing songs sounds much better. Just by using a blanket.

Good and informative video, thank you. But I couldn't stop laughing when he said Rokits are the best sounding studio monitors

Dat camera switch tho

Nice video, but if you use too rigid fiberglass then going thicker like 8" panels won't help much with absorbing lower bass, because its air resistance is going to be too high and the sound will bounce back and won't get absorbed and turned into heat, simply won't go full depth into the acoustic panel, so it won't use all that extra thickness. If you want to effectively absorb frequencies below 100Hz, 90Hz, 80Hz even up to like 40Hz with broadband absorbers, you should actually use that fluffy fiberglass (or foam) that has approximately 5 kPa*s/m2 and make panel at least 12" thick, or even more like 15" thick.

Great video, thanks! But I´m missing some mentioning of the relationship between thickness and density of the absorbent material. You can waste a lot of money by ignoring that - I did ;)

EZ tips on how to improve your room at the lowest cost possible. 1.) mollify (soften) acoustical waves in your room by hanging things up on the walls that diffuse the wave bounce. YOU DON'T NEED TO PUT FOAM UP TO DEAL WITH THIS 2.) make the walls as uneven as possible by hanging stuff up, making false, uneven sides to defeat standing waves and 'too much' echo. How much is too much echo? I don't fucking know. Whatever sounds good. 3.) tips on what to hang: pictures/artwork, banners/flags, plants. 4.) corners for bass traps. put some soft foamy shit in the corners of the room (floor to ceiling) to keep bass from resonating and bouncing from the corner into your monitoring area. foam rolling mats for exercise are good for this. buy two or three of them per corner or put a plant in the corner. 5.) make sure you have at last 2 meters of space from your speaker array to your ears to permit low frequencies to be perceived from your monitoring position. this is key. your lows won't sound right if you don't have this. why? 20Hz sine wave generates fully at 1m. 2m gives you space to perceive it in front and in back of you on the Z-axis. you don't hear it; you feel it in your ankles, hips, knees, shoulders, wrists. psychoacoustic. 6.) get a nice rug for your floor to minimize bounce and give you a cool vibe to your room if you only have wood floors. That's it. That's a nice 'natural', organic generally neutral listening/mixing AND mastering space. People who put way too much thinking in their room are doing it for nothing. People will enjoy your music on fucking cellphone speakers, their car stereo or consumer quality 2 channel speakers from their $300 TVs from walmart. The 'precision' acoustic monitoring environments is a myth perpetuated by the twats from NARAS and and music gear clowns to make you feel bad about what you have. That there is a PRO WORLD and you're not part of it. Here's the thing: look for great artists who write good music and who have real talent and stick with them. It is THEIR MUSIC and TALENT that will take you to your highest potential. Music production is not a solo event. It takes a group of people to realize music production and if you have a keen sense of art and couple it with your interest in technology, then you have a chance at being one of the geeks who are elevated to legendary producer status. BTW...you want a great producer to listen to: Phil Ramone. Anything he did was truly magic AND he got hooked up with great artists of various genres.