I have been thinking about upgrading my FB1s to the Plus version and was wondering if it is worth it. Also I was told by my Authorized Dealer that he can do the upgrade! I am concerened about the accuracy and competence of his job, since the transmission line will have to be upgraded too. I don't think that he will test the speakers similar the same way any FB1+ is tested before leaving the factory. Should I have these concerns? I would like to hear from anyone who had his/her speakers upgraded by an AD and if they're satisfied with the workmanship.
kas
