Frequency response analysis

Basal condition + China plywood + FE103E

The following features were in the frequency response of BS-10.

The sound pressure of the total is about 74db. This is ..super-Swan.. ..1db.. low.
Even 80hz manages to reproduce by [basurefupo-to] though the sound pressure level of a low region has decreased when the average of the convex region is assumed to be 55db for each 400hz. The under dives there to the riot according to the characteristic of [basurefu].
16khz sound pressure descent decreases a high region ..the Japanese oak even start 20khz...
(However, at the reference level because the influence is considerably undertaken at the angle of the mike speaker because this unit is a unit to which the directivity is considerably clear. )

The sound pressure level of the impression when auditioning first is considerably high to begin with. Against though quite different the tendency to the sound, and have extended to contrabass by D-10 Buckie and the previous sound pressure dives from [ga] comparison high excrement [ko] in an inside low region to BS-10 though almost the same average sound pressure level as unit D-10 that uses same FE-103E is shown. Evidence to work though ..peel.. [basurefu] becomes a reversed phase relation the sound in frequency Fd or less of the duct and ..riot.. causes the sound pressure decrease this. straight operation as [basurefu] thisFd of the duct (frequency that goes out of [basurefudakuto]) : according to Nagaoka teacher's "Art �@ of the original speaker design".

It is given by [shiki] drinking. When r(radius when the area of the duct is converted into yen) and Vc L3 (effect capacity of the cabinet)(length of the duct) are substituted for this second expression, it is numeric [gade] of 72. It is understood some 80hz and around to have risen and to lift around here with [basurefudakuto] well on the characteristic. This might be almost in the error margin of the measurement if it thinks about the influence of the room etc. though has risen most in figures 100hz.

BS-10