Thiele Small Parameters Calculator
Diameter speaker cone Dd (half rim):
DC resistance Re:
Resonance frequency Fs:
Rmax at resonance frequency:
Lower frequency F1 (-9 dB) at Rx:
Higher frequency F2 (-9 dB) at Rx:
if Fs1 within 1 Hz of Fs:
Voicecoil inductivity at 1000 Hz
Impedance at 1000 Hz:
of the voicecoil =
1 Euro = 7.5 grams, 2 Euro = 8.5 grams.
Extra Mass Ma: (Ma ~ Mmd)
Enter the lower resonance frequency Fsa:
See Fsa = 0.5 - 0.75 * Fs and Fsa > 10 Hz
the Thiele Small Parameters of this speaker:
Mmr (Air mass) =
Mmd (Diaphragma mass) =
Mms (Total mass)=
BL product =
Reference efficiency =
EBP = Fs / Qes
EBP from 125
Closed or 4th order BP.
Vented or 6th order BP.
Basshorns or Midrange.