Resource to calculate, building and measuring Hi Fi Loudspeakers and more...

Sunday, December 16, 2018
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    New Qts with series inductor

Fs can only be altered by mechanical modification of the woofer, but Qts may be altered to suit your needs by application of a calculated series resistor. The formulas used for this are:

Rs = Re*(Qes'-Qes)/Qes

Driver Qes = Driver Qms =
Driver Re = Ohm Rs = Ohm
Rs is the resistance of the seriea resistor and of the wiring (typically 0.5 ohm) 
  original Qts =
new Qts =