Perhaps he is but expensive since or glass wool of the same type is used for its inner rubber of HD. They can also use rolls of polythene and plates of chapadur. The filtrations most difficult to contain are those of the serious ones (Low and Big drum). They can work this mounting the battery on a platform with rubber base.
And the amplifier of low the same, to separate it of the floor. This not only will help to the aislacin but also the quality of listening within the room of test. Doors and Windows: But the optimal thing is to have one double door with an inside full air cavity of absorbent (always the same principle of Box in a Box). If they cannot make door double they reinforce the one that they have with plates of some material and add to him vain of glass. There are good systems of presses but I believe that homemade room of test would exceed the one . The windows are going to have to be sealed with the same principle: glass wool and plaster plates (or what they choose in order to isolate).
As much to isolate doors as windows they use draught excluders to die! They are moderately cheap and they mark the difference. To isolate is difficult and expensive but for anything impossible. To try well and in house does not have price! Acustizacin: The acustizacin is going to be directly related to Part 2 (Equipment: its disposition, optimization and handling.). Now we are going away to center in the preparation of room of test. The first question that arises is: That material use to land on water my room of test? All the materials that are on sale absorb.