Why the Pleiades filter 70ohm,40mH,70ohm does not sound as good as expected?

The experimental mic filter with wires sticking out all over the place, crocodile cable clips, sounds more big and natural.


Why?


because there are 2 different cores operating at the same time?


the bad contact good sound syndrome?


not known yet, more experiments are needed.


The first obvious thing to be done is measuring resistance. This is measured by the Escort LRC meter which can measure R at some frequency. (DC is not recommended as it can magnetism the core).


There was difference in R between pin 2 and pin 3 on the 2 Pleiades filters.


The experimental one measured 144Ω while the hardwired one only 130Ω.


By measuring inductance between pins 2,3 the experimental measured 42.4mH while the hardwired 41.9mH.


Obviously there is change of low cut or high pass slope slope because of the different series R. Both will be less than 6dB per octave but the experimental one is even less abrupt.