Technical data and specifications

The Razorblade is a true quadratic diffuser that features 15 mathematically calculated wells of various depths. As sound enters the varying wells, it is reflected back into the room at different times, effectively diffusing the sound energy. The walls and wells work together to refract both the on-axis and the incidental sound waves, scattering the energy into a true diffuse field. The result is peaks and valleys caused by the room geometry are smoothed out, resulting in a more balanced and acoustically neutral listening environment.

In effort control the widest possible bandwidth, this unique 'phase trap' has been developed to address directional frequencies above the critical 400Hz cutoff point and the all important voice range. Deep 8" wells are created from medium density fiberboard and plywood in effort to increase mass. These feature dado and glue construction to maximize rigidity. Each laminate is painted black while the outer shell is coated in a tough yet attractive black melamine finish for easy cleaning.

Measuring 24" wide by 48" high by 8" deep, the Razorblade is generally positioned in a lateral array at the receive end of the room. Though ideally suited for control rooms and studios where critical performance is required, the Razorblade can be used in all acoustic environments including soft-seat theatres, auditoriums, churches and home theaters - in fact any room that requires control of room ambiance.

Finish:	Black melamine laminate
Internal Construction:	Combination plywood and MDF
Dimensions	24” (610mm) x 48” (1219mm) x 8 ” (203mm)
Weight:	80 lbs.
Order Number:	Z840-2400-00
Full Specifications:	Razorblade Engineering Data Sheet [610k]

Effective Diffusion Range:	400Hz to 10,000Hz
Acoustic Test Results:	Razorblade Acoustic Test Results [551k]

Graph-1: Room without Diffusion The first spike represents the rooms early, or primary reflections. The second spike indicates the secondary reflections or room ambience. Notice that the secondary reflections are a full 10dB louder than the early reflections and most of the energy is bunched up at a narrow point in time. This translates into ear-fatiuge as the ear-brain try to separate the primary from the secondary reflections. The room reverb decay is sparse and prone to spikes in amplitude caused by standing waves.
Graph-2: Room with Diffusion Diffusion works by dispersing peak acoustic energy and spreading these spikes over a broader time span. This helps the secondary reflections to decay gradually and produces a room ambience with a dense reverb decay. The second graph shows the the effect of the room diffusion. The secondary reflections are lower in amplitue and spread out over a wider time span. The rooms reverb becomes denser with more reflection packed into the decay time. Good acoustic diffusion is perceived as a natural wash of room reverberation from from flutter echos and standing waves.