\Diaphragm, the foundation of timbre and quality

- Nov 06, 2020-

Some audio manufacturers still insist on using paper basin as the diaphragm composite material of top products

The composite type is to combine more than two kinds of materials to make diaphragm, which may be blended, such as kongfu dragon blended carbon fiber, man-made fiber blended with natural fiber, or directly made into sandwich monomer, such as aluminum diaphragm adhesive paper basin. Its purpose is to be compatible with the advantages of various materials and make the sound more diverse.

Focal's top-level 165W series bass unit adopts the sub so-called sandwich sandwich design, with a W-shaped core foam body sandwiched with two layers of special glass fiber tissue

Other variables affecting the sound of diaphragm


Size: the size of the diaphragm will affect the directivity of the monomer. Generally speaking, under the same conditions, the larger the size of the diaphragm, the lower the frequency of directivity will be at the beginning. Therefore, the larger frequency division point of the monomer should be set lower. Therefore, when the vibration film is off the axis, the directivity will not decay too fast.

Shape: basically, under the same other conditions, the more inward convex the bandwidth of the diaphragm is, and the slope of attenuation to both ends is slower. If the shape of the diaphragm is concave, the bandwidth is lower and the attenuation slope is steep. As for the two, they are good and mature? There is no certain, which depends on the needs of the monomer designer.

Phase cone and dust cover: the phase cone can make the phase of high frequency consistent with the low frequency part, make the frequency response more frequency Tanzania, and even increase the high frequency sense moderately. Instead, the dust cover can filter out high frequency, and can change its material to adjust the high frequency sense.

The phase cone can make the phase of high frequency consistent with the low frequency part, make the frequency response more frequency Tanzania, and even increase the high frequency sense moderately.

Coating: it has damping effect, and its function is to help energy divergence. Therefore, good coating should not dry, otherwise it will lose the damping effect.

For the horn, spectrum testing is only a basis, and timbre is determined by the diaphragm.

If you apply the right damping agent to the shock film to modify the sound color and frequency sound, you will find that the sound becomes more restrained and beautiful.