The Primacoustic Stratus is an acoustical device that suspends above
the recording console to control early reflections, flutter echo and help
eliminate standing waves that cause resonant peaks in the critical mix position.
Once in place, you will immediately enjoy a more controlled and intimate
acoustic environment, larger sweet spot and reduced ear fatigue.
Attractive and very affordable, the Stratus ships in kit-form and is
easily put together in minutes using a simple screw driver. The kit includes a
2" thick, 24" x 48" acoustic panel made from high density 6lb per cubic foot
glass wool and suspension hardware. The glass wool is encapsulated with
micromesh and the edges are resin treated to retain the minute fibres. For an
attractive appearance, the panel is covered in an acoustically transparent
The suspension hardware consists of two light-weight aluminum rails
and "L" brackets that form a rigid frame around the panel. To hang the Stratus,
simply attach the included suspension wire to the frame. Hardware and fasteners
for sheet-rock ceilings are included in the kit. Typically, the Stratus would be
suspended above the console and clustered in an array spanning the width of your
console and listening.
The Stratus absorbs sound energy by converting it to heat. Sound
energy traveling via air vibrations penetrates the panel causing the minute
glass fibres to vibrate and generate heat. This thermo-dynamic energy transfer
effectively absorbs directional sound energy and prevents it from reflecting
into the mix position.
By itself, the 2" thick glass wool panel is 100% effective for
frequencies between 400Hz and 20kHz (see the acoustic absorption chart). To help
control a broader frequency spectrum, the Stratus may be angled to vary the air
space between the Stratus and the ceiling. This allows the backing surface to
also absorb reflections off the ceiling.