Why Should You Use Aluminum Speaker Parts? According to Alon Wolf, the master craftsman of speakers, many speaker manufacturers commit the mistake of using medium-density fiberboard (MDF) for their speaker enclosures. He considers using anything other than aluminum for speaker parts a big no-no because aluminum is the most appropriate material for building speakers. The basic rule for a box is that it should be stiff and well-damped and have mass. Compared to aluminum, MDF may be well-damped but it is not very stiff. It is also neither hard nor heavy as it is made up of glue and resin. Additionally, when a driver is attached to an MDF box, the MDF ends up absorbing a lot of the energy or sound that the driver is releasing. As the driver puts out energy, the MDF box continues storing the sound, which keeps building up until listeners can hear the box flexing. In the end, the results are not particularly impressive and may even be annoying to the ear. Aluminum, on the other hand, passes with flying colors when it comes to building speaker parts as the material is well-damped, stiff, and heavy enough to give a speaker box the mass that it needs. Also, aluminum speaker parts do not limit the energy that a driver puts out. When a driver is joined to a well-damped aluminum enclosure, the sound that the speaker emits is in its purest form as the aluminum speaker parts allow the driver’s energy to come out freely. This results in listeners hearing things that they otherwise wouldn’t hear from an MDF box.

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