i don't see him talking trash about MANY companies, as one person here suggested. He is only saying that there are going to be inherent problems in ANY design and he specializes in taking the best qualities and rectifying minor (or major) problems and improving a speaker. I have been designing since the late 70's and I would trust this man testing and evaluating MY speakers which 'I' feel are just fine. He knows about the kinds of parameters and how each creates a cause & Effect on a system.
Just last week I tried to give a simple caution to a person who wanted to mod his speakers. It is one thing to be willing to sacrifice a piece of equipment, while trying to improve it, as opposed to someone who actually know the design characteristic and how each play their part in the final sound quality. Of course this person got pretty much bent out of shape becasue 'How dare I judge his abilities' or motives'.
Some people you just can't giver free advice to .
