Bobana0, Bud Fried DID use Focal drivers during the time when the Studio V were produced. I know they were also used in the Valhalla System. Beyond those two, I'd have to do a bit of research.
Not that you'll be happy to read this, but here's how sourcing moved from Focal to Gefco according to what Bud told me...
Focal drivers garnered a lot of hype, praise, and came at a premium pricing level. Always wanting to produce the best loudspeakers possible within sane technological and cost constraints, Bud decided to go with them. However, he noticed something didn't seem right. The drivers didn't match their specs; not even close. They went back and forth over the course of a few orders, with each side adamant in regard to their position. To make a long story short, Bud, who spent 1/3 of the year in Europe and the UK, dropped in on Focal for a visit. He demanded they measure the model of drivers with him present. Things came out exactly as Bud experienced. Subsequently, he went in a different direction.
Thankfully, the series crossover masks a lot of wrongs, and I'd think those Studio V still sound wonderful.
If you are happen to be looking for a replacement, Fried Products was selling Shanghai Silver Flute (Yindi) drivers, but you can purchase them from Madisound. These (quite) modestly priced drivers do much better than one would otherwise expect. Obviously, you want to confirm the dimensions first before moving on them. You could also go with something from Tympany (Vifa, Peerless, ScanSpeak). The third, and most overlooked, element of what I refer to as Bud's holy trinity is low Qts drivers (series crossover and TL representing the other two), so aim for that in your replacement.
