605 time delay crossover

[Alien_Shore]

OK, continuing the testing for the HF filter. I think I understand what you are saying with the coils, Don. Matching the Q of the filter to the Q of the resonant peak seems to be very important for the filter to work correctly. By using smaller gauge wire on the coil, increases the coils Re, and can eliminate the need for a separate series resistor.

Here's what I have achieved so far (this is still with spare coils on hand) - I've not yet built a form and tried to wind my own!!



These two impedance curves are: Blue = barefoot HF tweeter, and Yellow = with Zobel and resonant-peak filter.