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- ACDA Series ACDA-10 Activated Carbon Diaphragmatic AbsorberRated 5.00 out of 5$1,050.00 – $1,150.00
Are you tired of muddy and sloppy bass on your sound stage with bass notes blurring and smearing into one big bloated mess? Tired of not connecting with your music the way you know it’s possible? Frustrated by the lack of an emotional connection with your songs despite investing a crazy amount of money into your amp, speakers and hi-fi?
Imagine being able to hear incredible bass separation and definition in every piece of music you play and enjoying the sound of your music coming to life as your mids and highs pop like you always dreamt possible. Imagine being able to experience crystal clear attack and decay in each individual bass note in every piece of music you mix or listen to.
With the ACDA-10, you’re going to feel the power of every single bass note the way you want to hear it. It’s that connection to the music which makes all the difference to your enjoyment of it. It’s the dynamics and separation of instruments with crystal clear clarity definition, which creates the spine tingling, hairs on the back of the neck sensation that you desire so much from your mixing efforts and music collection.
If you order the ACDA 10 today you will also get:
- A free 30 minute phone or video consultation on your room mode issues with me, the products inventor, Dennis Foley
- A 100% risk free 30 day money back guarantee
- And castors so you can move the units in and out of your room if your listening room serves multiple purposes.
- ACDA Series ACDA-12 Activated Carbon Diaphragmatic AbsorberRated 5.00 out of 5$1,150.00 – $1,250.00
Are you tired of muddy and sloppy bass in your room with bass notes masking your music into one big bloated mess? Want to mix without second guessing what you’re hearing? Then our Activated Carbon Diaphragmatic Absorber is for you!
You get:
- The most powerful low frequency absorber available in the world today,
- 100% absorption at 50 Hz., 63% at 40 Hz. and absorption all the way down to 30 Hz., all in a depth of just 16″,
- Unprecedented attack and decay clarity in every bass note, so you can mix without second guessing,
- A bass absorber that softens the mids and the highs,
- A solid wood unit that stands 30″W x 60″H x 16″D,
- Independently tested and predictable performance results as verified in this report by Riverbank Acoustical Labs,
- Phone time with our Chief Acoustic Engineer so any questions can be quickly answered,
- Expert placement advice so you can get the most out of your completed unit,
- A 100% money back guarantee!
The QDA – 11 is two units within one. First, a quadratic diffuser based upon prime number 11 with a diffusion frequency response from 385 Hz. – 3,450 Hz. Behind the prime 11 quadratic diffuser is our activated carbon broadband low frequency broadband absorber from 30 Hz. – 400 Hz. Broadband lower frequency absorption is required in all small rooms. The absorption performance is the same as our ACDA-10 unit. At the base of the QDA-11 is our more frequency specific carbon absorber from 30 Hz. – 50 Hz. This base absorber is designed after our ACDA-12 unit and offers large amounts of absorption from 30 – 50 Hz. which is the frequency range of unwanted pressure issues in the majority of today’s smaller rooms. The QDA measures 24″ w x 60″ h x 9″ deep and weighs 225 lbs.
– ACDA-10 Riverbank Test Result
– ACDA-12 Riverbank Test Result
Diffusion and lower frequency absorption goes hand in hand with the front and rear wall locations. The front wall is an area of high unwanted low frequency pressure and the rear wall follows the same pattern. Low frequency energy builds up at the boundary surfaces of front and rear wall locations. You need both a frequency specific and a broadband absorption approach to deal with the magnitude of these low frequency pressure issues.
The QDA-11 was designed for those who do not have the physical space requirements to accommodate deeper units but still want the advantages of broadband and frequency specific absorption along with the diffusion benefits offered by quadratic diffusion.
If you order the QDA today you will also get
- A free one 30 minute phone or video consultation on your room mode issues with me, the products inventor, Dennis Foley
- A 100% risk free 30 day money back guarantee
The QDA-13 are two units within one. First, a quadratic diffuser based upon prime number 13 with a diffusion frequency response starting at 285 Hz. and going through 3,450 Hz. Behind the prime 13 quadratic diffuser is our activated carbon broadband low frequency absorber from 30 Hz. – 400 Hz. At the base of the QDA-13 is our more frequency specific carbon absorber from 30 Hz. – 50 Hz. The QDA measures 27″ w x 60″ h x 12″ deep and weighs 275 lbs.
– ACDA-10 Riverbank Test Result
– ACDA-12 Riverbank Test Result
The Quadratic Diffusion in the QDA takes your sound and spreads it out across your room in the way nature intended you to hear it without your room getting in the way. Your room prevents this naturally occurring sound-field from happening because it has 4 walls, a floor, and a ceiling. Diffusion minimizes the reflections that want to destroy your precious direct sound from your speakers. Whilst reflections from room surfaces help you localize and define sound and distance, these reflections must be managed through diffusion so that the reflections do not get in the way of the sound coming from your speakers. This is why your ears are longer than they are wide.
With the QDA you will finally get to experience the involvement that your expensive speakers are producing but which your room is stopping you from hearing. Through no fault of your own you have become so used to, and accepting, of poor diffusion in your room that your ears and eyes will open wide when you hear Quadratic Diffusion for the first time…Seriously, words fail to describe just what an impact diffusion has until you try it for yourself!
If you order the QDA today you will also get
- A free one 30 minute phone or video consultation on your room mode issues with me, the products inventor, Dennis Foley
- A 100% risk free 30 day money back guarantee
- And castors so you can move the units in and out of your room if your listening room serves multiple purposes.
The QDA – 17 are two units within one. First, a quadratic diffuser based upon prime number 13 with a diffusion frequency response starting at 225 Hz. and going through 3,450 Hz. Behind the prime 17 quadratic diffuser is our activated carbon broadband low frequency absorber from 30 Hz. – 400 Hz. At the base of the QDA-17 is our more frequency specific carbon absorber from 30 Hz. – 50Hz. The QDA measures 37″ w x 60″ h x 16″ deep and weighs 325 lbs.
– ACDA-10 Riverbank Test Result
– ACDA-12 Riverbank Test Result
Want the ultimate in musical involvement? Looking for an emotional connection and experience each and every time you play your music? Then our flagship Quadratic Diffuser Absorber is for you.
- An acoustical industry first; Middle range diffusion and low frequency absorption all in one beautifully crafted unit.
- The quadratic diffuser 17 gives you diffusion from 225 Hz. all the way up to 3,400 Hz. This provides you with incredible separation, definition, and additional timbre quality to your precious mid range and vocals.
- The low frequency absorber starts absorbing energy at 30 Hz. and moves through 200 Hz. so your bass instruments are both powerful and clear.
- The combined effect is a larger and deeper sound stage than you will have ever experienced before so you can hear your mid range and vocals as clear and clean as if you were in the studio with the musician.
- A beautifully crafted solid wood cabinet designed to match your room decor.
- A unit that measures 35″W x 60″H x 18″D and weighs 250 Lbs.
The QDA – 23 are two units within one .First, a quadratic diffuser based upon prime number 23 with a diffusion frequency response starting at 185 Hz. and going through 3,450 Hz. Behind the prime 23 quadratic diffuser is our activated carbon broadband low frequency absorber from 30 Hz. – 400 Hz. At the base of the QDA-23 is our more frequency specific carbon absorber from 30 Hz. – 50 Hz. The QDA – 23 comes in three units. Each of the two diffuser sections measures 27″ w x 60″ h x 17″ deep and weighs 275 lbs. Together they are 55″ wide. The ACDA-12 base measures 55″ w x 12″ h x 17″ d and weighs 175 lbs. Total weight for the units is 725 lbs.
– ACDA-10 Riverbank Test Result
– ACDA-12 Riverbank Test Result
Want the ultimate in musical involvement? Looking for an emotional connection and experience each and every time you play your music? Then our flagship Quadratic Diffuser Absorber is for you.
- An acoustical industry first; Middle range diffusion and low frequency absorption all in one beautifully crafted unit.
- The quadratic diffuser gives you diffusion from 200 Hz. all the way up to 3,400 Hz. This provides you with incredible separation, definition, and additional timbre quality to your precious mid range and vocals.
- The low frequency absorber starts absorbing energy at 30 Hz. and moves through 200 Hz. so your bass instruments are both powerful and clear.
- The combined effect is a larger and deeper sound stage than you will have ever experienced before so you can hear your mid range and vocals as clear and clean as if you were in the studio with the musician.
- A beautifully crafted solid wood cabinet designed to match your room decor.
- A unit that measures 36″W x 60″H x 20″D and weighs 275 Lbs.
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