Paper Cones

 

Due to it’s optimal combination of low weight and very good mechanical features (stiffness, damping) paper still is a material that is suitable for the production of loudspeaker cones excellently. By means of special processes and materials DKM for each of your applications offers an appropriate solution.

 

1. Production of paper cones

- sieve inside or sieve outside

- pressed for improvement of fidelity

- air dryed to increase internal damping

- sizes up to 10 inches are produced in Germany,

  sizes larger than 10 inches are produced in UK

 

2. Materials of paper cones

a)  production in UK: hardest Blue Sig, standard material and soft material  Mu and K2

    or very hard special material SigX.

b) production in Germany: hard, black ST material, standard material and soft, damping materials

   V, DU, DS and special materials MA (Micra), NU.

c)  for increase of strenght spacing material is used (aramid fibre, carbon fibre, glass fibre, ...)

 

3. After treatment of paper cones

a)  hardening of cone neck or whole cone by painting.

b)  water-repellent, bactericidal or fungicidal design

c)  complete immersion to raise internal damping.

d)  coating to improve optics and acoustics

e)  laminating with high-tech-fabrics