I've never seen very much on the Manger's although the design intrigues me. John Curl has made some very positive comments about these drivers and their potential, but once again, they are limited in terms of spl and extension. The articles that i have seen have suggested using multiple Manger's to get around this problem, which somewhat defeats the purpose of using a full-range driver. That is, the point source radiation pattern is lost with more potential for phase related cancellation issues. Sean
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