I spoke with Dave... I think it was at TVI. I had the same question about what is in the boxes. He stated that they are 'proprietary drivers'. But, after hearing a "high value" line array 2 nights ago at work, I will not take my chances with anything that is not one of the top 5 brands. I just heard the A-line powered line array. That is by far the worst sounding array of any type I have ever heard...so far. I walked 30 degrees off axis and there was absolutely no treble whatsoever, just a bunch of muddy midbass. If the TVI line array is even LOWER quality, I shudder to think what it sounds like.
T