Posted by Wayne Parham [ 151.193.213.24 ] on January 13, 2006 at 13:23:44:
In Reply to: Wayne, need a favor here. posted by spkrman57 on January 13, 2006 at 11:22:10:
After several posts about 16Ω drivers where I basically replied "run it in Spice and see", I finally ran the numbers for myself. I expected that the circuit would be underdamped and there would be a peak around 2kHz but found it was actually pretty good, even with the 16Ω part. Resistor R2 dominates, so is primarily responsible for setting the Q of the HF crossover filter. That sets the flatness of the shelf in the first two octaves above crossover. Components R1, C1 and the reactance of the tweeter set top-octave augmentation.
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