Bass Traps are very useful and it is rare to find a room that doesn't benefit from their use. Bass Traps are used to reduce the uneven nature of bass in a room and to improve the ‘tightness' of the low end. Just like mid and high frequency treatment, Bass Traps need to be used in the right amounts so that they work properly.
This means you need performance data!

Make no mistake, controlling low frequencies in small rooms is not easy because it involves long wavelengths. Most problems occur when triangular shaped acoustic foam is sold as a bass trap but it is only 400 to 500mm wide. This is NOT big enough. A bass trap that works very well is always going to be 800 to 900mm wide.

Don't fall into the trap of buying what we call a Low/Mid trap and expecting it to work as a Bass trap . The hard facts are shown in the test data below. This was measured in a certified laboratory under strictly controlled conditions. The traps were installed just as they would be in a normal room (see test lab pictures) so that the results relate to the real world.

It is obvious from the data that the 460mm wide Low/Mid trap works at Low/Mid frequencies (Yellow curve) and the 850mm wide Bass Trap works down to Bass frequencies (Purple curve).
Extra absorption is achieved when using combined Low/Mid Traps and Bass Traps together (Blue curve).

Both traps have the back corner removed to allow mounting where something may be in the way – e.g. a cornice or moulding. They are also designed for the most common use which is bass traps in vertical corners and Low/Mid traps in wall-ceiling corners. They can be stacked as shown if desired for increased performance.


We have designed and tested these products so that Australian users can rely on predictable performance.
They are Australian made, designed and supported and the design is registered.

Test Lab Setup
Reverberation Room Tests to Measure Absorption