Actually with the [basurefudakuto] calculation type

Basal condition + lauan plywood + FE83E

  BS-8 was made with the lauan plywood of 15mm thickness. However, how when Nagaoka master's book is often seen, do not you write the lauan of 14mm thickness?Oh dear there might not be most influences in the characteristic even if the thickness of [basurefupo-to] changes by about 1mm. I hear whether a pure board of 14mm might have been choked this ..the lauan of 14mm thickness however... Such [tterunokana] of ..drinking.. [u]. I think that there is impossibility purely and structurally ..this.. if it says in addition. ��It is likely not to understand if it doesn't try in this size etc. though this has the possibility that the crack etc. go out when this thinks about the direction of the warp of the purity material.
Let's put out the frequency of the [denode] duct for the time being for 14mm on the reason.

L1: (cm) =0.6 of rectangular ducts in width
L2: (cm) =14.5 of rectangular ducts in height
L3: 13.7 of rectangular ducts in length (cm)
r: Radius when area (L1.L2) of rectangular duct is converted into yen
Vc: Capacity (?) =1.4l of cabinet that is not effect

Theoretical 90hz becomes the resonance frequency of the duct of this [kyabi]. It might swell almost even if the previous state ..f special [wo].. is seen around of that and it be understood to earn it the sound pressure.

BS-8