DIY Sound Diffusor QRD 11 Construction Plan
DIY QRD 7 Kit measurementsDIY QRD 11 Kit measurementsDIY QRD 13 Kit measurementsQuadratic DiffuserDIY Diffuser BuildRear Wall Quadratic Diffusers

DIY Sound Diffuser Build Plans – 3 DIY Quadratic Diffuser Size Options For The Price Of 1

Price: $39.95

In Stock & Ready For Instant Download – Pro Plans Made Easy!

Suffering from poor diffusion in your room? Need a cost effective way of dealing with the problem? Then our DIY Sound Diffusers are for you!

You get:

  • A material and tool list, cut sheet and easy to follow step by step assembly instructions,
  • Actual build photos showing you what each finished step looks like,
  • 3 Plans for the price of 1. We provide you with separate build plans for the following sizes & frequency response options:

1. QRD 7 Frequency Response = 850 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 14 1/4″W x 48″H x 4 1/2″D and weigh 20 lbs.,
2. QRD 11 Frequency Response = 375 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 23 1/4″W x 48″H x 9 1/2″D tall and weigh 65 lbs.,
3. QRD 13 Frequency Response = 280 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 27 3/4″W x 48″H x 12 1/2″D and weigh 105 lbs.,

  • DIY plans that are based on our $1,000+ production units!
  • Independently tested and predictable performance results,
  • Phone time with our Chief Acoustic Engineer so any questions can be quickly answered,
  • Both horizontal and vertical diffusion options,
  • Expert placement advice so you can get the most out of your completed unit,
  • A 100% money back guarantee!
SKU: 000010221. Category: .

Product Description

That’s Not All!

If you order the DIY Plans today you will also get:
- A free one hour phone or video consultation on your room mode issues with me, the products inventor, Dennis Foley
- Free enrollment in our exclusive Gold members club for Professional Studio Engineers and Audiophiles
- A 100% risk free 30 day money back guarantee

The following video shows Chief Product Designer, Dennis Foley, working with Carl from our workshop, assembling one of our pre-made DIY QRD 7 kits which are also on sale on this site from $224.97. These kits are what you will end up with when you build the DIY sound diffuser plans yourself.

Enough With A Compromised Listening Experience

A quadratic diffuser will allow all middle and high frequencies to be equally represented in your room a separation and definition in vocals and instruments that no flat room surface could ever hope to do. A quadratic diffuser will also add width to your sound stage, so your music will sound like it is coming from farther left and farther right of your actual speaker positions. With your DIY plans you’ll finally be able to achieve that balance as these plans come direct from the specs of our thousand dollar plus production units. I want to make them available to you because I’ve seen so many DIY diffuser plans on Google that are labelled as “free plans”. Having looked through a lot of the specs all I can say is “you get what you pay for!”.

Limited Stock

Act now as this price is going up again soon so don’t miss out. As the exclusive designer and manufacturer of this product and technology you cannot buy these designs in any other store or on any other website.

This product is for serious recording studios and Audiophiles only. If you’re serious about wanting sonic perfection, then this is most definitely for you. Don’t live with a compromised listening room and room sound for a minute longer. Take action now, believe me, you’ll thank me for this, for years to come.

Thank you
Dennis Foley
Inventor & Owner of Acoustic Fields

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SHIPPING

WHAT ARE YOUR SHIPPING OPTIONS?

We ship via UPS and Freight. Click the “Add to Cart” button and the cart page you will see the UPS shipping calculator. You can use this to calculate your shipping preference.

For the QDA, ACDA and DIY QRD Kit product series, please call us on 520–392–9486 for shipping rates and prices as these need to ship by freight and we first need to know your address in order to get a quote for you from the freight company.

WHEN WILL MY ORDER SHIP?

We will schedule your order into our production schedule and you will be notified of shipping date. All units are hand built and made to your specific needs. Estimated completion time is 2 – 4 weeks with shipping time to be determined after unit completion.

CAN YOU SHIP TO POST OFFICE BOXES OR APO/FPO ADDRESSES?

No, due to the size of the products, we cannot ship to Post Office boxes and APO/FPO addresses.

DO YOU SHIP INTERNATIONALLY?

Yes we do ship internationally. Click the “Add to Cart” button and the cart page you will see the UPS shipping calculator. You can use this to calculate your shipping preference.

For the QDA, ACDA and DIY QRD Kit product series, please call us on 520–392–9486 for shipping rates and prices as these need to ship by freight and we first need to know your address in order to get a quote for you from the freight company.

TRACKING AND UPDATES

WHAT CAN I EXPECT AFTER I PLACE MY ORDER?

You will receive an order confirmation immediately after placing your order. This confirmation will be sent to the email address that you used when you placed your order.

HOW DO I MAKE CHANGES TO MY ORDER OR CANCEL IT?

Please call us at 520–392–9486 or send us an email at info@acousticfields.com.

HOW DO I CHECK MY ORDER STATUS?

You will be sent an email with a tracking number when your order ships. If you still have questions, you can contact us at 520–392–9486 or or send us an email at info@acousticfields.com.

RETURNS AND EXCHANGES

WHAT IS YOUR RETURNS POLICY?

You have up to 30 days to receive your product and return it for a full refund minus the applicable shipping costs.

OUR GUARANTEE TO YOU

We stand 100% behind our product performance levels so we are happy to offer a 100% Money Back Guarantee if you are unhappy with the performance results, for any reason. Our guarantee ensures that you can return your order within 30 days of receiving your order for a full refund.

To get a refund just send us an email to info@acousticfields.com or call 520 – 392 – 9486 with the following info:

Your first and last name
Your transaction ID
Product purchased and price
Date of purchase

100% money back, happiness guaranteed! We may ask a question or two so we can learn how to better serve you in the future.

Kind regards
Dennis Foley

Are you unhappy with the poor sound diffusion in your room? Fed up with the lifeless, over absorbed, dead sound you are hearing? Is it especially true of the vocals? Are you struggling to hear all the timbre you know is there? Then you know you need proper sound diffusion treatment in your room and yet a solid wall of diffusors can set you back north of $5,000 and who has spare change like that lying around?

But what if you could build your own DIY diffuser that uses the exact same specs of a professional production unit that retails at way in excess of $1,000? Imagine a step by step DIY plan which gives you a material list which tells you what materials to use, a tool list detailing what tools are required, a cut sheet explaining what sizes to actually cut, and step by step instructions accompanied by actual build photos showing you how each completed step should look when completed.

Picture yourself building professional grade diffusers out of wood and staining and finishing them to match the decor of your listening room, home theater, or professional recording studio. Then imagine having telephone or email access to a professional acoustic engineer who has built hundreds of these units when you have a question or comment. How good would it be if that same acoustic professional was there to assist you with proper positioning of your finished units in your own room? And picture the scene when you show your friends your work and let them hear the beautiful, rich in tone and character, mid ranges you always knew were being produced by your equipment but could never previously hear because your room was getting in the way!

Well that dream experience is now possible thanks to the DIY Quadratic Diffuser Plans we are making available to you. You get 3 build plans for the price of 1 in this package, so you can chose to build your diffusers from the following size and frequency response options:

1. QRD 7 Frequency Response = 850 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 14 1/4″W x 48″H x 4 1/2″D and weigh 20 lbs.,
2. QRD 11 Frequency Response = 375 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 23 1/4″W x 48″H x 9 1/2″D tall and weigh 65 lbs.,
3. QRD 13 Frequency Response = 280 Hz. – 3,400 Hz. The measurements for this solid wood unit, when built, will stand 27 3/4″W x 48″H x 12 1/2″D and weigh 105 lbs.,

The plans include actual DIY unit build outs by a professional carpenter with each step in the build out photographed to match with the step by step assembly instructions. There is a tool list, material list, and cut sheet included with each build drawing. You can use any wood choice or finish to compliment your existing room decor.

A vertically positioned diffuser diffuses sound in a horizontal pattern. A horizontally positioned diffuser spreads sound energy out in a vertical array of energy. They are essential components of your room if you want to truly connect with your music, and with these plans you get to build both!

Proper room diffusion is not an option, it is a necessity! Poor diffusion is a room distortion that is present in all rooms both small and large. In fact, it is one of four main acoustical distortions found in your room right now. Diffusion technology is a must in all listening, home theater, and professional recording studios. Now, you have the ability to build your own diffusion technologies. Not just any type of diffusion, but quadratic diffusion which is the most time tested and proven method of diffusion used by professional recording studio builders for years the world over.

What Will You Experience?

  • You will get a material and tool list, cut sheet, step by step assembly instructions with actual build photos showing you what each finished step looks like when completed. So you will have plenty of instructional information to build your own units which ensures you will never go wrong or waste materials. In no time at all you’ll have a completed quadratic diffuser fully built allowing you to experience your music in a way very few people ever get the opportunity to do.
  • You will have the ability to contact an engineer who has built hundreds of these units whenever you have a question or comment, so there is no fear of going wrong. This means you will be able to finish your unit very quickly and have it installed in your listening room in a matter of days.
  • You will get to choose the material you want to build your unit out of and finish it in a manner that compliments your listening room or studio, so your diffusers will look as good as your room will then sound.
  • You will have the ability to have both vertical and horizontal diffusion in your listening, home theater, or recording studio, so you can hear everything the artist and engineer intended you to hear when they made the recording together. This experience will bring you closer to the artist and give you a far more visceral listening experience than you ever imagined possible.

That’s Not All!

If you order the DIY Quadratic Diffuser Plans today you will also get:
- A free one hour phone or video consultation on your room mode issues with me, the products inventor, Dennis Foley
- Free enrollment in our exclusive Gold members club for Professional Studio Engineers and Audiophiles
- A 100% risk free 30 day money back guarantee

The following video shows Chief Product Designer, Dennis Foley, working with Carl from our workshop, assembling one of our pre-made diffuser kits which will be on sale soon (these will retail at $400 plus). These kits are exactly what you will end up with when you build the DIY diffuser plans yourself.

Enough With A Compromised Listening Experience

A quadratic diffuser will allow all middle and high frequencies to be equally represented in your room a separation and definition in vocals and instruments that no flat room surface could ever hope to do. A quadratic diffuser will also add width to your sound stage, so your music will sound like it is coming from farther left and farther right of your actual speaker positions. With your DIY plans you’ll finally be able to achieve that balance as these plans come direct from the specs of our thousand dollar plus production units. I want to make them available to you because I’ve seen so many DIY sound diffusers on Google that are labelled as “free plans”. Having looked through a lot of the specs all I can say is “you get what you pay for!”.

Most of the designs are going to be a waste of your time and materials. Once built, the units will not perform consistently or be predictable! You’re going to end up with all sorts of new problems in your room and a huge hole in your pocket because of the materials they are advising you to buy… literally hundreds of dollars worth just in the build cost alone and all to end up with a crappy diffuser that won’t work for your intended usage and room position! I’d rather you go and buy yourself a nice crate of beer and forget all about it than go ahead with that.

So don’t waste your time and energy on something that is only going to make matters worse. Buy our proven and verified DIY plans and start enjoying more of your music than you ever thought possible in a matter of hours!

Limited Stock

Act now as this price is going up again soon so don’t miss out. As the exclusive designer and manufacturer of this product and technology you cannot buy these designs in any other store or on any other website. If you also add the DIY BDA unit and the DIY foam cabinet to your order at checkout you will have DIY plans to manage bass, middle and high frequencies, and units to diffuse mids and highs. With these unit plans you can control three out of the four total acoustic room distortions all small rooms suffer from.

This product is for serious recording studios, Audio Engineers and Audiophiles only. If you’re serious about wanting sonic perfection, then this is most definitely for you. Don’t live with a compromised listening room and room sound for a minute longer. Take action now, believe me, you’ll thank me for this, for years to come.

Thank you
Dennis Foley
Inventor & Owner of Acoustic Fields

P.S. But Don’t Just Take My Word For It…

The following testimonials are about our professional QDA production units. However the QRD – 7 is based on the same technology as the QDA’s and performs at similar levels. The only difference being you have will not be able to include our proprietary activated carbon low frequency absorber parts as those are purpose fit to the production units and you will obviously need to build the DIY sound diffuser yourself. But still that’s a hell of a deal given the thousands of dollars in savings given you end up with most of the performance of our flagship QDA product but at a fraction of the price!

QDA Testimonial 1. By Bruce Hallberg, Audiophile for 40+ years.

QDA Testimonial 2. Gene Pitts, Editor and Publisher of The Audiophile Review Magazine and Editor-in-Chief of Audio Magazine for 22+ years. Here’s an extract from his full review of the QDA series.

Acoustic Fields Gene Pitt Review

“In Acoustic Fields’ lingo, QDA stands for quadratic diffusor absorber. The bottom of the unit directly below the diffusor incorporates their 30 Hz. – 50 Hz., low frequency absorption technology using activated carbon filters inside. They take 35 pounds of activated carbon and arrange individual filters inside the bottom cavity which is designed like their individual, low frequency absorber called the ACDA-12. Inside and directly behind the deepest trough in the diffusor section are two more activated carbon filters which cause the diffusor to not only diffuse but absorb a broader band of absorption which is the same as their ACDA-10, 30 Hz – 100 Hz.

Thus, a user can choose to have quadratic diffusion from about 300 Hz on up to 3,500 Hz. This can do wonders for perceived accuracy of mid-range (vocals), sound stage presentation and instrument separation (aid), particularly when coupled with low frequency absorption from 30 Hz – 100 Hz. I believe that this arrangement of middle and high frequency diffusion and broadband low frequency absorption has never been done before in a commercially available product.

The photo above is two vertical units with a horizontal unit below the vertical units. A vertical diffusor diffuses sound in a horizontal, fan-like, energy array. A horizontal diffusor diffuses energy in a vertical, fan like, energy array. Thus, one can create two dimensions of diffusion in a room. It is an extraordinary experience, akin to listening to a concert in, say, the best hall in Boston or Chicago or Vienna.