OP,
I haven’t posted on this site in at least a decade. I need to make an exception in this case. I bought a pair of Vivid Giya G1 after hearing them at an acquaintance’s house. I had nothing but blown midranges, This could be a very long post but since retelling it raises my blood pressure, I will condense it. I went through at least six midranges and finally a midrange and tweeter. The waiting time for replacements on average was one to three months. Finally, Vivid changed policy on replacing drivers (I suspect for me only). I also had crossover damage on one occasion. Everything the OP stated about service is correct but it is much worse than that in my experience. All of these problems were experienced with gear that drove several other speakers flawlessly for years. I make this point because the initial response from Vivid (US distributor) was it was caused by something upstream in my system. The new driver replacement policy was they would not replace the driver with a refurbished driver ($500). They needed to “evaluate” the driver and if it couldn’t be repaired they needed to sell a new driver ($1,500). I knew long before this point they were scammers and this was the last straw for me. I believe they designed the drivers to fail. This was a cottage industry for them. My guess is that they used a coil wire diameter that would fail when the speakers were driven beyond moderate listening levels. The drivers were cheap aluminum that could be stamped out like at a machine gun rate. I am a retired tool and die maker so I understand this intimately. I also know many people have had similar experiences with Vivid. I look forward to the day this company no longer exists. It is the Trump University of audio. The full story is much longer and revolting. If you PM me and provide a phone number, I will share it. Now let’s see how long this post lasts before it is taken down It is 100% truthful and accurate.