Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
I don't have any experience with the Pioneer B20FU20-51FW but I've worked with the Motorola KSN 1038. There is a collection of posts at the link below about the tweeter that may be helpful to you. Included in this list is a post that has the Motorola spec sheet, showing response, efficiency and distortion. There is also a post that has a chart of values of series capacitors that will give various attenuation values. And you'll find several posts that describe crossover circuits and implementations of many kinds of speakers using the Motorola KSN 1038 tweeter.