My only difficult service issue with a speaker, in over 40 years at this, was a blown tweeter for a pair of Leak 2075's ( just a wonderful sounding speaker ). I owned them for years ( along with other speakers at that time ), and had difficulty finding a replacement. After finally obtaining the tweeter replacement, I wound up selling them , but , regret doing so, because they were wonderful to listen to. I know there are threads on this subject ( products we sold and regret selling ), so I am sorry for bringing that up. I know several people with MBL speakers and never a service issue. With the correct space / setup and equipment, they are wonderful to listen to. I would not purchase them without a listen first, and would highly determine if they would work in the listening environment...........Mr. D.