Custom Design utilizes a certain type of, "special" Steel. It is not only rated for electro-resistance (ERW) but also posesses certain acoustic qualities. The Steel is utilized not only to create the columns of their speaker stands, but also joined with a patented acoustic polymer to create both top and base plates for the speaker stands, iRAP anti-resonance platforms, as well as desktop component plinths and all of their other Acoustic Steel products.
To the left are the results of an independent assessment of Custom Design’s Acoustic Steel. Tests were conducted to measure the transfer of noise vibration from the speaker platform to one of the base spikes, measuring both vibration from the floor to the speaker and vibrations from the speaker to the floor.
The graph clearly illustrates the extraordinary capabilities of our acoustic dampening materials and products. You can see that Acoustic Steel Speaker Stand Top and Base Plates have the extra ordinary ability to absorb energy in the form of resonance. The undamped noise is tremendously reduced through the use of their Acoustic Steel top and base plates. . The absorption rate is clearly demonstrated in the graph.
As expected, the results show a remarkable reduction in vibration response, which could otherwise "colour" the sound produced. The Y- axis is in decibels with 5dB steps. A 10dB change in vibration level is a factor of 3 (i.e. a 10dB reduction means that the vibration has been reduced to one third) and a 20dB reduction is a factor of 10 (i.e. a 20dB reduction means that the vibration has been reduced by 90%). 30dB = x30: 40dB = x100.
The Acoustic top plate reduces the vibration by x100 or more over much of the frequency range. Adding an Acoustic base plate reduces the remaining resonance by a further factor of up to x100 (a total of x1000 at some frequencies compared with the inert filler alone).
The Speaker Stands used in the test were the award winning RS 300 with the standard steel 4mm top and base plates . Existing customers can purchase Acoustic Top Plates and Acoustic Base Plates as an optional extra to enhance the performance of their RS 300 Speaker Stand Supports.
Acoustic Steel Isolation Platforms or iRAPs are available to enhance the performance of your Hi-Fi and AV Support Systems.