Jon Valin's CJ ART and GAT blog has spurred this question. Jon has the CJ gear hooked up to the Scaena speakers. I looked this design up in Robert Harley's latest edition of the book, but unfortunately it is not covered. I'm guessing line arrays are a small, small niche since Robert's encyclopedic book leaves them out.
Nevertheless, these designs may be coming back. Genesis has been around for a while and may have been resurected recently. Scaena has been getting a lot of good press at shows the last 5 years or so. Harry Pearson loved the Scaena in his review, calling them "electrostatic like in the midrange", but with realistic bass. He loved their "realism". How do these speakers create their" realism"?
Is this true of all line array designs or just Scaenas? How good can the midrange drivers get? Are they really electrostatic like? (Heck can any non-electrstatic midrange driver hold a candle to an electrostat?)
How much of it is great cross-over design?
The downsides I can see are adequate space, setup, and cost. Scaena is $60K+ and Genesis may be $100K+. What are the other downsides?