I submitted my speakers for a public critique on various DIY forums. I have also had the luck of making contact with Ronc, the designer of the original Dallas, Dallas II and Dallas III. He has confirmed that he designed the Dallas III. So I credit these speakers to Ronc. I have received the following advise: 1. The side walls and internal structure could do with more Support or Bracing. This is something I probably could not do without massive cutting up of the cabinets as they are already…