Speaker's
Thielle-Small
parameters
Resistence (R
e
) [Ohms]
Resonant frequency (F
s
) [Hz]
Mechanical Q (Q
ms
)
Electrical Q (Q
es
)
Total Q (Q
ts
)
Equicompliant Air Volume (V
as
) [L]
Sealed Box
Box Q (Q
tc
)
0.5 - Perfect transients, but low efficiency (over damped)
0.577 - Bessel, Very good transients
0.7 - Butterworth, Good transients and flat response with minimum cutoff
0.9 - Better efficiency, somewhat degraded transients, steeper roll off
Box Type
Box Volume (V
c
) [L]
Box resonance frequency (F
c
) [Hz]
Cutoff frequency at -3dB (F
3
) [Hz]