Vibration insulation for loudspeakers and subwoofers.

How to reduce vibrations from loudspeakers and subwoofers
When playing music impact noise and vibrations are produced by the loudspeakers. This page helps you to decouple a loudspeaker, or subwoofer, and reduce any sort of vibration. This will reduce impact noise to adjacent rooms and buildings, and in almost any situation makes loudspeakers preform better. *(products for soundproofing a room can be found on our "neighbour-pages").

In order to reduce impact noise from a loudspeaker, or subwoofer, you need to decouple the loudspeaker from the floor, or shelf for smaller loudspeakers. The spikes underneath loudspeakers are most of time not that good at reducing vibrations. The best way to reduce vibrations from a loudspeaker is to decouple a loudspeaker with acoustic vibration insulating foam. Our method works as follows:

Place the loudspeaker on a heavy foundation, such as a heavy stone tile or concrete slab (which you can paint later). This new foundation should be larger than the footprint of your loudspeaker, especially for floorstanding loudspeakers with a high center of gravity, stability is desirable. In the image below you can see a great example from a customer.

The proportions in this situation are perfect. A marble slab, of about 50 x 40 x 8 cm, heavy, rigid, and large enough to carry the loudspeaker. Looks awesome too and sounds even better. This loudspeaker weighs about 50 kilos. This example shows an application with 4 pieces of Purple Regufoam D220, 100 x 100 x 25 mm, vibration insulation. In this setup there is room for fine tuning the solution by adding 1 more block on top of the previous blocks, doubling the thickness. This might be necessary in homes with a wooden timber floor. The thicker the Regufoam pads, the more low frequent vibrations can be isolated. 

Parts of Regufoam D300, with a thickness of 25 mm, are most frequently used by the real audiophile, usually because of the colour and the weight of large high end hifi loudspeakers. Regufoam D300 is more suitable for large floorstanding loudspeakers, while the softer Regufoam D150 is for smaller loudspeakers, on a desk or shelf. In the graph below we have made an estimate for loudspeakers. Please keep in mind that these figures are indications. Especially heavy, large and tall loudspeakers need a more dense Regufoam insulation type and a large foundation. 

Vibration insulation to decouple a loudspeaker or subwoofer
We have drawn up an indication overview based on the weight of one loudspeaker:

As you can see, we reduced the thickness of the Regufoam parts, that you need to cut and adjust yourself, as the weight of the loudspeaker increases. This to ensure the stability of your loudspeaker. Feel free to adjust and fine tune this to your likings and situation. The size and density of the Regufoam parts may vary per type of floor and loudspeaker, so you might need to experiment a little. An excellent alternative, bearing the name Hifi Dampers, comes in sets that consist of 12 round pre-cut pieces of Regufoam D150, to acoustically decouple multiple small loudspeakers and audio components.

Questions? 
Do you have any questions about this topic? Please feel free to contact us, we will be happy to answer your questions as soon as possible.