1. Activated Carbon Diaphragmatic Absorbers:
Diaphragmatic absorption has been used in professional recording studios for years with great success. A diaphragmatic absorber is an absorber that 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.
Two Front Walls
Once low frequency energy strikes the surface, it starts the front wall or diaphragm moving. In our diaphragmatic absorbers, 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.
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 absorber on steroids. A gram of the stuff 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 greatly improved. Our absorbers weigh in at 200 lbs. each and absorb at rates and levels never before achieved in a commercially available product. We are very serious about low frequency absorption.
Multiple Layered Cabinet
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-10 and ACDA-12 units than most speaker cabinets.