Does the foam damping material inside speakers serve any other purpose other than to:
(a) reduce sound wave reflections within the cabinet, and
(b) increase the apparent volume of the box that the woofer
"sees", via adiabatic compression/heat absorbtion?
Also, am I correct in thinking that if two boards of different bending moduli etc. are laminated together then this will reduce the resonance of that board to less than of a single MDF board? I realise that question depends on the materials being used. What I'm getting at is instead of laminating a thin wood veneer (ie. 1mm) onto 18mm MDF, why not laminate 9mm thick wood onto 10mm MDF. The end result would be the same thickness (19mm) but would the thicker wood dampen the MDF resonance and vice versa, thus producing less resonance overall than the 18mm MDF + 1mm veneer?
Thanks for any input,
joseph.
(a) reduce sound wave reflections within the cabinet, and
(b) increase the apparent volume of the box that the woofer
"sees", via adiabatic compression/heat absorbtion?
Also, am I correct in thinking that if two boards of different bending moduli etc. are laminated together then this will reduce the resonance of that board to less than of a single MDF board? I realise that question depends on the materials being used. What I'm getting at is instead of laminating a thin wood veneer (ie. 1mm) onto 18mm MDF, why not laminate 9mm thick wood onto 10mm MDF. The end result would be the same thickness (19mm) but would the thicker wood dampen the MDF resonance and vice versa, thus producing less resonance overall than the 18mm MDF + 1mm veneer?
Thanks for any input,
joseph.