Thiele-Small parameters:

Fs  = 27.16 Hz
Re  = 5.90 ohms[dc]
Le  = 3856.00 uH
L2  = 1754.49 uH
R2  = 2.71 ohms
Qt  = 0.57
Qes = 0.66
Qms = 4.01
Mms = 39.89 grams
Rms = 1.695746 kg/s
Cms = 0.000861 m/N
Vas = 145.08 liters
Sd= 346.36 cm^2
Bl  = 7.808413 Tm
ETA = 0.42 %
Lp(2.83V/1m) = 89.70 dB

Added Mass Method:
Added mass = 50.00 grams
Diameter= 21.00 cm



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Fs  = 27.16 Hz
Re  = 5.80 ohms[dc]
Le  = 3873.89 uH
L2  = 1842.91 uH
R2  = 2.10 ohms
Qt  = 0.56
Qes = 0.64
Qms = 4.01
Mms = 86.65 grams
Rms = 3.690527 kg/s
Cms = 0.000396 m/N
Vas = 66.79 liters
Sd= 346.36 cm^2
Bl  = 11.535321 Tm
ETA = 0.20 %
Lp(2.83V/1m) = 86.50 dB

Closed Box Method:
Box volume = 58.00 liters
Diameter= 21.00 cm