How to Build a DIY Acoustic Diffuser QRD 13 Kit

How to Build a DIY Acoustic Diffuser QRD 13 Kit - www.AcousticFields.com

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10 жыл бұрын

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In this video I show you how to build a DIY Acoustic Diffuser QRD 13 Kit. Our DIY sound diffuser QRD 13 kit is based on prime number 13 so we have 12 wells, dividers, rears, side pieces, back pieces, the horizontal dividers. The whole thing is designed so that all you have to do is get some glue, the right kind of course, and assemble the unit. No screwing required, everything is pre-cut for you. The back and the top and the bottom will support the well dividers and the horizontal dividers. So go ahead and get started by looking at how to put the DIY Sound Diffuser kit together.
Any questions, please let me know.
Thanks
Dennis

Пікірлер: 91

@AcousticFields Жыл бұрын

This diffuser is included in our All In One DIY Build Plans Bundle: www.acousticfields.com/product/all-in-one-diy-acoustic-treatment-build-plans-package/

@leonideremeev7823 7 жыл бұрын

Very easy to assemble and simple unit that gets diffusion job done. Fantastic craftmanship!

@AcousticFields 7 жыл бұрын

Hi Leonid, Thank you for your support.

@laurabrown2899 3 жыл бұрын

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@adidaskoln 10 жыл бұрын

Im a carpentry and joinery craftsmen by trade. Great looking timbers. Excellent machine work with damn fine tolerances. A purpose made component that holds together with tape........ nice

@AcousticFields 10 жыл бұрын

Thanks Adi, much appreciated! Can you email me at dennis@acousticfields.com?

@adidaskoln 10 жыл бұрын

Acoustic Fields just emailed you now Dennis.

@adidaskoln 10 жыл бұрын

Acoustic Fields just emailed you now Dennis.

@laurabrown2899 3 жыл бұрын

One of the Best Ideas of SoundProofing is "SoundProof Curtains" That Stops Outside Noise by 80% (25 Db) Tested. Check Here: livesoundproof.com/best-soundproof-curtains/

@das250250 8 жыл бұрын

If you build a small jig to locate the side panels by using a length ( length of wells cabinet ) and thin width ( 2") with short wood blocks that insert inside the panel wells say 1" then the panels will be held vertically straight so the side panels can easily be pushed in

@AcousticFields 8 жыл бұрын

Hi Graham, Good suggestion. I will pass it along to the guys.

@sparkletune 5 жыл бұрын

Your plans are amazing. I bought them last week and was blown away by how nicely they're done. Thanks again!

@AcousticFields 5 жыл бұрын

S, Thank you. Let us know if you have any issues with the build or application.

@Campbell1. 3 жыл бұрын

As Im in Australia and product postage would be impractical, Ive downloaded the plans suite......very nice indeed Dennis. thankyou

@AcousticFields 3 жыл бұрын

Our DIY plans are downloaded upon purchase. No postage is required.

@Campbell1. 3 жыл бұрын

@@AcousticFields All done, thanks Dennis

@MattSalamone 3 жыл бұрын

standard birch 1/4" plywood is less than a quarter inch, actual 0.195"... do you have to plane wood sheets down to 1/4" to make the vertical dividers? or just use the 0.195" standard plywood?

@AcousticFields 3 жыл бұрын

Well dividers should be as thin as possible. 1/8" is best but produces warp over time.

@eduardcornelis8162 4 жыл бұрын

So if you build a diffuser you it doesnt have to be airtight . So sound will bounce off it but also pass thru it ? Should there be absortion behind the diffuser then ? Just curious thanks for all the video’s

@AcousticFields 4 жыл бұрын

Z, Not necessary. Its the well width and depth that contribute to performance.

@snetsjs 8 жыл бұрын

How does speech only diffusion differ from broad spectrum diffusion in terms of materials and well variation? Do the foam pyramid diffusers meet the necessary requirements?

@AcousticFields 8 жыл бұрын

+snetsjs Foam is a sound absorbing technology. It has nothing to do with diffusion. This is the way acoustic product manufacturers label products as some thing they are not nor can never be. It is like asking the tortoise to run like the rabbit. He is not designed to do that function. I have heard foam called a "bass trap", now a diffuser, tomorrow maybe a reflector? Diffusion in a small room must meet 5 technical criteria involving decay rates along with RT-60 times. Only quadratic diffusion meets these 5 technical requirements. Stay away from any thing else labeled diffuser.

@acpllc3 6 жыл бұрын

Looked on your site... not seeing any kits, as the video implies... only plans and fully assembled units. Are the kits no longer available?

@AcousticFields 6 жыл бұрын

A, The difference in price between the kits and fully assembled units was small. People prefer to have the units shipped to them fully assembled.

@googoo-gjoob 4 жыл бұрын

i just checked your site..... this kit doesnt appear to be available anymore?

@roxnroll8050 6 жыл бұрын

Quick question... Will adding finish hurt any of the frequencies? And does height matter? (Ex. Making it taller?) Thanks! (And great video)

@AcousticFields 6 жыл бұрын

D, You must choose the height to match the usage of the room. We do not stain or paint our diffusers since we use a "A" grade wood. We use a clear sealer to protect against moisture and dirt. Any finish material will impact sound quality. Do not paint or use MDF in the build. MDF and paint are too absorptive.

@dinospd 5 жыл бұрын

Hello, on the same subject, is there a rule of thumb on the height vs room size? Is that explained in the diy book? Thanks in advance! Love your channel!

@linerstad86 6 жыл бұрын

Really nice diffusers! What kind of glue is used?

@AcousticFields 6 жыл бұрын

A, We use a a compound similar to the "super glues" marketed under that name.

@juergens4169 4 жыл бұрын

Looks very nice! Q: No damping material inside?

@laurabrown2899 3 жыл бұрын

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@JackloveYoutube 11 ай бұрын

Can you please tell the LxBxH of diffuser & what was the wells depth ? F

@AcousticFields 11 ай бұрын

Every prime number has different series of depths. You can see the depths for each prime number in our build plans. www.acousticfields.com/product/all-in-one-diy-acoustic-treatment-build-plans-package/

@xjimmy225x 3 жыл бұрын

What are your thoughts on paint? Would painting it alter the sound negatively?

@AcousticFields 3 жыл бұрын

J, It depends on the surface area's impact on sound quality. If the surface area you are considering painting has a large impact then yes anything you do has an influence.

@arneolson7114 6 жыл бұрын

I'm thinking CA glue but with a 2 hour dry time and 24 hour cure you must be using something else.Any time soon you will talk real world diffusion in a live rock band situation? I see you want it behind I was always told far opposing wall....my room is the letter C.Two long walls across from bass and guitar amps while the drums sit in a 15 wide channel 10' forward and 10' back from the kit.Was thinking bout a dual qrd7 ramp diffuser horizontal at head high out front of kit to 6" depth. Then making qrd 13 behind low on floor on wheels but is there a diffuser 3 " wide channels... 12" depth two 6" at zero depth then 3 with 12" depth in repeating order for behind the drums? A shroeder design??

@AcousticFields 6 жыл бұрын

A, Fill out the information in this link : www.acousticfields.com/free-room-analysis/

@joshua43214 6 жыл бұрын

For others reading this in the future. Do not use CA glue. Use PVA (white glue). Any glue with an extended working time, good surface wetting, and low clamping pressure is good. Bad glues are ones with short working time, high clamping pressure, and poor wetting. So that makes CA, yellow, and polyurethane very bad choices. If you must use CA, use a thick slow version, go one part at a time, and hit it with a shot of accelerator. Would be stupidly expensive and not very strong though.

@velocityacoustics Жыл бұрын

what is thickness of the fins/ well dividers? looks like 3/16 or 1/4 inch? Are they made from solid wood or plywood?

@AcousticFields Жыл бұрын

The thinner the well divider the better for performance. If you can get small wood dividers at 1/8" that would be ideal. You can use 3/16" or 1/4" ply or solid if no small wood available.

@shahnewazmanto4798 6 жыл бұрын

what are the depth of the wells in inch ?

@AcousticFields 6 жыл бұрын

S, Every prime number has its own unique frequency response with different well depths. The well width is held constant at 2". Our diffuser build plans will give you the measurements you need. What is your usage in the room? What are room dimensions? www.acousticfields.com/product/all-in-one-diy-acoustic-treatment-build-plans-package/

@truman4956 Жыл бұрын

Would be nice if these kits were still available

@AcousticFields Жыл бұрын

We discontinued this product line for lack of interest. We can custom build them for you. They are avaible in groups of 4 only. Send us your prime number request to info@acousticfields.com

@Wijnfles 6 жыл бұрын

where do you place these? they're quite big

@AcousticFields 6 жыл бұрын

W, It depends on your room usage. Two channel listening front and the rear wall, home theater rear wall, and ceiling, mix rooms rear wall.

@miked5487 4 жыл бұрын

Would there be any improvement on performance if I filled the well with dense sound absorption material?

@AcousticFields 4 жыл бұрын

M, Do you need absorption on the same wall surface area as the diffuser? What rate and level of absorption do you need and why?

@Ritefita 4 жыл бұрын

you will get an absorber and loose a diffuser

@bobm2120 7 жыл бұрын

how much and where do you buy it

@AcousticFields 7 жыл бұрын

Hi Bob, Send me an email to info@acousticfields.com.

@thijs199 4 жыл бұрын

So, why do you let the sheets of wood in between the wells stick out? why not make them the same depth as the longest well itself? Why compromise?

@BlackWeaponsBench 2 жыл бұрын

At the risk of being slapped, what would happen to the performance if you filled the cavities with foam?

@AcousticFields 2 жыл бұрын

You would destroy the diffusers ability to perform. Sound energy enters the diffuser and then is distributed into the wells of the diffuser. It bounces around within each well and then is sent back into the room based on the frequen cy response of the diffuser. Each well is a particular depth diffusing a particular octave band. You must keep the wells free from any material type. People want to put fabric across the face of each diffuser and that can not work either.

@wiremu3879 8 жыл бұрын

is there a reason that its 12.5 inches deep. can i half this amount. new to this any advice would be great

@MrObelisk2290 8 жыл бұрын

+Wiremu digitalaudiorock.com/cgi-bin/qrd.cgi put in the specifications that you want as far as maximum well depth and what prime # diffuser. It's very scientific and tells you range of diffusion

@AcousticFields 8 жыл бұрын

+Wiremu No, you must keep the sequences in tact. Go to a lower prime if you are having depth issues.

@jeb419 3 жыл бұрын

Are the kits going to be available again?

@AcousticFields 3 жыл бұрын

What prime number do you need?

@91Tribual 9 жыл бұрын

are the depths arbitrary or measured in some way? thanks!

@MrObelisk2290 8 жыл бұрын

+Joakim YesMan digitalaudiorock.com/cgi-bin/qrd.cgiput in the specifications that you want as far as maximum well depth and what prime # diffuser. It's very scientific and tells you range of diffusion

@AcousticFields 8 жыл бұрын

+Joakim YesMan They are based upon calculations that uses prime numbers as a basis for the modulus formula.

@JilesMcCoy 5 жыл бұрын

Looks like you discontinued this product and now charge a lot for a finished one?

@AcousticFields 5 жыл бұрын

JDM, Kits are still available. We do not advertise them since we sell only a few a year.

@JilesMcCoy 5 жыл бұрын

@@AcousticFields I'd love to get the cost details on your kits!

@AcousticFields 5 жыл бұрын

JDM, Send contact info to info@acousticfields.com

@laurabrown2899 3 жыл бұрын

One of the Best Ideas of SoundProofing is "SoundProof Curtains" That Stops Outside Noise by 80% (25 Db) Tested. Check Here: livesoundproof.com/best-soundproof-curtains/

@eponn5648 3 жыл бұрын

Why are all your diffuser models have prime number -1 Wells, does 0 height well not matter?

@AcousticFields 3 жыл бұрын

A "0" height or well depth is a flat surface which is a reflection or sound redirection surface. It is not necessary in the frequency response of the diffuser.

@eponn5648 3 жыл бұрын

@@AcousticFields thank you

@mikepruett1745 4 жыл бұрын

where do you locate this one

@AcousticFields 4 жыл бұрын

M , Diffusion application is all about room usage and distance from listening position to the diffuser.

@JoseToce 7 жыл бұрын

what wood was used ?

@AcousticFields 7 жыл бұрын

Hi Jose, Soft woods work best for diffusers. Do not use MDF. Pine, basswood, and cheery are some options.

@JoseToce 7 жыл бұрын

Why do you say do not use mdf?

@JoseToce 7 жыл бұрын

Thank you very much very kind.

@boboutelama5748 5 жыл бұрын

Ok. So your diffusers are also absorbing. You know that this places your diffusor in the same group than EPS diffusers ? @@trevordolhan1060

@DrSamE 4 жыл бұрын

@@trevordolhan1060 LOL! When talking about real diffusers you want as LESS as possible absorption.

@keithrowe1007 7 жыл бұрын

I don't understand. Every single QRD I've ever seen, either in pictures, illustrations, or as a part of the QRDude design software, has a number of wells corresponding to a prime number. So they'll have 3 or 7, or 11, or 13, etc. Yet yours has 12? I'm sure it probably works, but why not do actually 13 wells? And shouldn't one of the wells be a "zero," where it doesn't have any fins around it? All your wells have fins protruding. Or are you meant to put them together and glue a "zero" well on the front joint in between two units? Just curious. Thanks.

@AcousticFields 7 жыл бұрын

Hi Keith, As a general guideline there is one less well than the prime number of the chosen sequence. The zero means the surface is reflective. We achieve that by the two cabinet edges adjoining each other since multiple units are required.