Details - Junior
Data sheet for SB midrange. Nice, straight frequency response.
Orig. Data sheet for Vifa tweeter, with phase shield. I have removed it, and modified the unit with membrane coating and a larger rear chamber.
Frequency response for tweeter today, measured at 25 cm distance, based on impulse response. Supersonic peak at around 22KHz, reduced with passive LCR circuit. Without, it would be around 6 dB higher!