Posted by Martin [ 152.163.100.134 ] on April 06, 2006 at 18:02:08:
In Reply to: How do I measure the Le of a speaker? posted by Tre' on April 05, 2006 at 10:06:09:
Unfortunately, the effective Le and Re of the speaker's voice coil are going to change with increasing frequency. Fortunately, the Zobel circuits are not that sensitive so getting a Le and Re result at 1 kHz is good enough for sizing the Zobel. This is why there is typically a 25% factor in the rule of thumb equations for calculating the Zobel's capacitance and resistance.
Martin
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