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Acoustic Fields’ product line focuses on absorption and diffusion products in your listening rooms, home theaters, and professional recording studios. Acoustic Fields’ products are unique in many ways as independently tested and verified by world renowned Riverbank Acoustical Laboratories. The acoustic engineering team is led by Dennis Foley who has over 35 years of experience in room acoustics. Our technology has been used by Capitol Records, Sony Masterworks, Electric Lady Studios, Westlake Pro and Side 3 Studios, just to name a few.

About Us

Advanced Bass Absorption & Diffusion Technologies

What makes us special?

Acoustic Fields’ product line focuses on absorption and diffusion products in your listening rooms, home theaters, and professional recording studios. Acoustic Fields’ products are unique in many ways as independently tested and verified by world renowned Riverbank Acoustical Laboratories. The acoustic engineering team is led by Dennis Foley who has over 35 years of experience in room acoustics. Our technology has been used by Capitol Records, Sony Masterworks, Electric Lady Studios, Westlake Pro and Side 3 Studios, just to name a few.

New Definitions Needed

The term “bass trap” is a misnomer. Bass is never trapped. With its long and powerful wavelengths, all one can do is slow the low frequency wave down enough to absorb some of its energy. You want to absorb enough to have an impact on the attack and decay of low frequency notes. You want to hear that fifth string at 30 Hz. on a bass guitar, along with and most of the time beside, the bass drum notes. Bass energy goes through everything.

You must first slow it down and then use sound absorption technology that is purposely designed to absorb low frequency waves. You cannot use foam, boxes filled with building insulation for such a task as they don’t have the horsepower to handle low frequencies below 100 Hz. in an acceptable way. Instead you must use time tested and proven diaphragmatic absorption and, thanks to the activated carbon sponge we’ve put inside our units, you now get a turbo charged version.

Our Clients

Activated Carbon Diaphragmatic Absorbers

Diaphragmatic absorption has been used in professional recording studios for years with great success. A diaphragmatic absorber has a cabinet of a certain depth with a front wall or diaphragm that moves in relation to the sound pressure that is exerted upon it. It is a similar movement as found in our speakers when they move back and forth in response to an applied electric current. Obviously, it is on a much smaller movement scale because we are using sound pressure to affect movement rather than electricity. Once low frequency energy strikes the surface, it starts the front wall or diaphragm moving.

In our diaphragmatic absorbers (ACDA Series), we have two front walls that move in vibrational sympathy with each other to have a much larger impact on slowing the low frequency wavelength down. They are designed to compliment each other in movement against the low frequency energy. Once it is slowed down, it then enters the inside cabinet depth. Most diaphragmatic absorbers have a mineral wool or building insulation type material inside the diaphragmatic absorber to control internal cabinet resonances and to also assist with the cabinet’s overall low frequency absorption. We do not.

How we can assist you

Proprietary Technology

Room Design

Finding Contractors

Acoustic Analysis

DIY Plans

Acoustic Consultation

view of seat in Sacred Ground studios in Hollywood

StudioPro Foam Technology

Music and voice are different than other sounds. We all know that. The problem is that most companies use building insulation that was designed to keep your room warm and cool to absorb excess music and voice energy or to minimize the reflections off of room wall surfaces. They use it because it is cheap. It is also highly toxic and lacks everything that music and voice needs. If you have ever been in a “Roxul room”, you will know what we mean. The life and musicality is drained from voice and music. You must use special absorption curves for music and voice that have a smooth and linear response. Forget about keeping your room warm or cool. Let’s focus on the music and voice and use technologies that were designed for music and voice. Don’t we owe that to our music and voice.

There is no foam technology that has a smoother absorbing curve and which works so well with both your voice and music. By absorbing more energy in the 125 Hz. – 250 Hz. range than traditional foams do, you will enjoy more definition, separation, and clarity to your mid range vocals and instruments.

With this increased rate of absorption, a smoother absorption curve is created. It is that smoothness that is your key to better mid ranges in your recording and listening rooms.

Read more about our Acoustic Foam StudioPro

  • Acoustic Fields Absorption Coefficient in %
  • Auralex Absorption Coefficient in %
  • Sonex Absorption Coefficient in %

Activated Carbon Or Charcoal

We use activated carbon or charcoal. Charcoal has a much higher rate and level of absorption than anything currently in the market place and can turn a standard diaphragmatic absorber into an low frequency absorber on steroids. A gram of carbon has over 2,000 sq meters of surface area and we place over 65 lbs. of activated carbon inside each one of our ACDA-10 and ACDA-12 activated carbon absorbers. With this as our cabinet fill material, we achieve an overall cabinet “Q” value that is tremendously improved.

Our absorbers weigh in at 200 lbs. each and absorb at rates never before achieved in a commercially available product. We are very serious about absorption. To encourage the front two walls to be the only two walls that are moving, we make our cabinets as rigid and inert as possible. Our cabinets have seven layers of different materials with different densities all layered together with viseo elastic damping compounds between each layer. Our cabinets are stronger and better built with our ACDA series than most speaker cabinets.

  • ACDA-10 Absorption Coefficient in %
  • ACDA-12 Absorption Coefficient in %

Activated Carbon Bass Absorbers

Our low frequency activated carbon bass absorbers can be built into your walls or placed in your room as free standing units. They are the most powerful bass absorbers available on the commercial market. Our ACDA 12 unit achieves 100% absorption at 50 Hz., 63% at 40 Hz. and continue doing a great job down into the 30 Hz. range. Whereas our ACDA 10unit provides broadband absorption from 30 Hz. to 400 Hz. at 25% average. And all of this is achieved in just a 10″ depth space.

Our low frequency absorption rates have been independently tested and verified by the World famous Riverbank Acoustical Laboratories (now Alion Labs). The graphs you can see show the absorption levels verified in the reports.

ACDA-10 Riverbank Acoustical Labs Testing Results
ACDA-12 Riverbank Acoustical Labs Testing Results

Do You Want To Solve Your Room Acoustic Problems?

There’s no one size fits all when it comes to room acoustics.
That’s why you need an individual room acoustic analysis in order to fix the issues you’re facing in your room.
Our chief acoustics engineer Dennis Foley will analyse your room personally and the best part is: It’s 100% free!

About Dennis Foley

Chief acoustics engineer Dennis Foley started out as a partner in a real estate developing firm that was concerned with building high-end office buildings. After testing several acoustical treatment products in the marketplace Dennis Foley was given two million dollars and a team of eight guys to find and develop a better solution to the acoustical issues large office buildings are facing today. After several years of testing and development, Dennis Foley developed his own unique open celled foam technology as well as the worlds most powerful low frequency bass absorbers, the ACDA series. Today Acoustic Fields’ acoustic treatment technology is used by Capitol Records, Sony Masterworks, Side 3 Studios, Westlake Pro, Electric Lady Studios and many more.

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