The BIC 8950 is the 8” driver used in the Achromatic W25, and W35. I now have a pair of them for spares. I also have a complete set of drivers for both of my W45’s this includes the BIC 413 midrange and BIC 8983 tweeter which are used in all three speakers. All I need is a pair of the 2 capacitor crossover used in the later W45 with the 10” Wharfedale Model 2507 woofer. (square magnet). You know the holy law of St Vidicon: ad paupertatem venerit, non patiatur defectum, tu parce habet.