Hi all, a few years ago I acquired a pair of Trace-Elliot Evolution 2 full range cabs from a night club and have been using them as part of a front of house system for live gigs. The original PD drivers have long expired and been replaced with Black Widow and Eminence equivalents (or as close as). The problem I find is that every so often, the RCF M73 compression drivers pop their diaphragms. Was just wondering whether anyone on here has access to the spec sheets for the M73 and its diaphragm N255-N. any info would be appreciated, Thanks