Manual

Reexion Filter Technical Manual
About Your Reexion Filter
What is the Reexion Filter?
The Reexion Filter is basically a portable device for recording live sound sources with reduced room ambience.
It is an advanced composite wall which is positioned behind any microphone by means of a variable position
stand clamp assembly which ships with the product. The main function is to help obtain a ‘dry’ vocal or instrument
recording. This is especially useful in studios without proper acoustic treatment, but can also be used to help
record takes in control rooms, where the performer also has to operate the recording device, or in rehearsal studios
to reduce ambient noise.
The Technical Bit:
The Reexion Filter has 6 main layers. Firstly, a strong layer of punched Aluminium which allows sound waves to
pass through it, diused, to a layer of absorptive wool. The sound waves then hit a layer of Aluminium foil which
helps dissipate energy and break up the lower frequency wave-forms, and from here they hit an air space kept
open by rods passing through the various layers. The air gap acts as an acoustic barrier. The sound waves then pass
to a further layer of wool and then through an outer, punched, Aluminium wall which further serve to absorb then
diuse the remaining acoustic energy.
The main absorber has 4 formed pieces of state-of-the-art specialist acoustic absorptive material attached to its
face via the extended separation rods, which further serve to absorb and then diuse the sound waves as they
pass to the main lter.
The stand assembly comprises a mic stand clamp tting, which attaches by means of a vertical joint to the
horizontal bar assembly onto which both the Reexion Filter, and any standard tting shock mount can be xed.
The microphone (in its shock mount) can then be moved both vertically and horizontally along the bar, and the
Reexion Filter itself can be moved vertically to obtain the optimum working position.
How does it work?
The various layers both absorb and diuse the sound waves hitting them, so progressively less of the original
source acoustic energy passes through each layer. This reduces the amount of energy hitting un-treated walls
and other surfaces so there is less of the original source reected back as unwanted room ambience to the mic.
The Reexion Filter also helps prevent any reected sound reaching the back and sides of the mic. Its shape and
size have been carefully tested to maximize absorption while keeping ‘coloration’ down to only around 1dB, and
leaving the microphone’s polar pattern unaected.
In summary:
All in all, it’s a very clever and desirable piece of kit. It allows you to record vocals, guitars etc with a ‘drier’ sound
without having to have an acoustically treated room. It’s portable. It uses state of the art materials. It works… and
it’s a fraction of the price of acoustically treating your studio environment!