I am currently using a single capacitor as high pass filter on my current Saba tweeter. The frequency of crossover is about 6-7 KHz
In my experience many 8" drivers get a bit ragged much above 1-2 KHz so I would like to crossover perhaps at around 2 KHz
This recent purchase is a 4" paper cone alnico tweeter of vintage origin - Siemens 6S Ela 3180b - which was one of the best tweeters in the day. My questions are:
1. What is the lowest frequency it is safe to use it down to.
2. For the region 1 to 7 Khz, is the best sound quality achieved by using the top end of the 8" driver or the bottom end of the 4" driver. Both drivers are paper cone, alnico magnets, and similar quality and sensitivity