Looking for driver information. TS parameters so I can transplant it into a new enclosure. It was used in Cresta 10 and 30 post 2000 series as mid/bass.
I've owned a pair of B139. I measured them and the TS parameters were so far off the datasheet specs that the specs were totally useless. Fs is specified at 25 Hz, while my (broken in) drivers measured 40 Hz!
