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Primacoustic Razorblade Quadratic Diffuser  From Primacoustic

The Razorblade is a high-performance quadratic residue diffuser 

Primacoustic

Manufacturer's Description from Primacoustic

  • True Schroeder* quadratic residue diffuser ‘QRD’
  • 17 deep 8" wells diffuse energy down to 400Hz
  • Eliminates standing waves and flutter echo
  • Adds sense of air and retains natural ambiance

The Razorblade is a high-performance quadratic residue diffuser (QRD*) based on a primitive root sequence that employs a grated array of 17 precisely calculated wells to break up and scatter acoustic energy to create a diffuse sound field.

Originally developed by Schroeder, QRDs have long been considered to be one of the most effective forms of diffusion. A series of wells are mathematically arranged in such a fashion that sound waves entering the device reflect back into the room at different times, thus shifting their relative phase. This produces both spatial dispersion (left and right) and temporal dispersion (time shift) which effectively eliminates flutter echoes, breaks up strong first order reflections and reduces standing waves without overly deadening the space.

Unlike light-weight plastics that are unable to control powerful low frequencies, the Razorblade combines heavy, MDF slats with a furniture grade solid wood laminate surround for added mass and rigidity. The grated 24" x 48" array is made up with a series of 17 deep, narrow wells that will effectively diffuse acoustic energy from 425Hz to over 5.5kHz with excellent scattering down to 200Hz. This makes the Razorblade particularly effective in varients of the LEDE (live-end, dead-end) studio control room designs where several units are typically clustered across the rear wall, spanning the width of the work surface.

Once in place, the Razorblade creates a sense of air and space, giving the impression of being in a much larger room. This creates a more natural and comfortable working environment. The Razorblade is ideally suited for studio installations, soft seat theatres, high-end home theatres and performance venues.

 
Primacoustic

About Manufacturer

If you are listening to the sound system in a church, PA system at an airport, or a concert in a hockey arena and are not impressed, it is probably not the fault of the PA system, but more likely the lack of proper acoustical treatment in the room.

Architects have just begun to understand that a great looking room that may be ‘functional for people’, may in fact introduce horrendous results when it comes to acoustics. This can be partially attributed to the lack of inter-disciplinary cross-training at universities and from a historical perspective, the science of acoustics has been kept a ‘dark secret’ that could only be conjured by mythical creatures called acousticians.

But this is changing. Through trial and error, advanced computer modeling and greater understanding of acoustical behavior, we can now predict with relative certainty how sound will behave in a given room. And as more and more folks have come in contact with acoustics, there is an appreciation for the benefits which, only a decade ago, were simply invisible. In fact awareness regarding the importance of acoustic sound control has gained such prominence that many top notch sound contractors will refuse to switch out the PA system in a church unless problems with the acoustics have been resolved for fear that the new PA will not yield any improvement and will only serve to tarnish their reputation.

Radial Engineering Ltd. pioneered the benefits of acoustics nearly 20 years ago by importing a brand of acoustic panels from Europe and supplying them to our customers. We quickly became frustrated as the product was expensive and it seemed that the company’s focus was heading towards industrial noise control—not music. We wanted a solution for studios, churches, broadcast and other music related venues. Primacoustic was created in Year-2000 as a means to provide simple solutions. Little did we know that within 10 years the market would completely shift, that most professional recording would move from the studio to the home and that schools and churches would begin to realize that the majority of their room problems were in fact caused by poor acoustics, not the audio system.

Today, Primacoustic has become a market leader in high performance acoustic products. Our ground-breaking Broadway acoustic panels not only grace the studio walls of international artists such as Tommy Lee, Nathan East, Scott Henderson, and David Bottrill, they have also been selected at gaming giants Electronic Arts and Transformers and were used to control the acoustics at the Vancouver 2010 Winter Olympics by US giant NBC and Canada’s CTV in the International Broadcast Center.

Primacoustic begins with the premise of a no-compromise approach on acoustical performance. In fact, Broadway panels are as good, if not better, than the most expensive panels made today. The ‘win’ is achieved by following the ‘Model T Ford approach’ of mass producing a limited selection as a means of lowering costs.

Primacoustic offers a wide array of acoustic solutions that spans all market segments. This includes special T-bar ceiling tiles that help retain sound inside a boardroom, acoustic clouds for call centers and studios and bass traps & diffusers for high end control rooms. Each product is engineered to deliver maximum performance while presenting the very best value.

Specifications

Frame Material: Baltic Birch Plywood, Black Finish
Dimensions:
(H x W x D)
24" x 48" x 8"
610mm x 1219mm x 203mm
Order Number: Z840-2400-00
Mounting Hardware: n/a