Wayne Parham Messages: 18748 Registered: January 2001
Illuminati (33rd Degree)
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.