An error in a system tuning exercise (I assume) led me to replacing a tweeter in one of my Venere S speakers. I obtained it from Fine Sounds at
https://finesounds.com/en/americas/
They were absolutely superb in supporting my request for pricing on all the Venere S elements (At the time, I was thinking about buying spares for the future, as daveyf has suggested) and eventual replacement of the tweeter.
I would caution you that I am a a reasonably skilled DIY person and I did find it a bit daunting. Take very careful notes or videos of your speaker removal for when you have to re-install it. I'm not sure what kind of help I can be, but feel free to DM me if you have more questions...