I have two pairs of Isobarik DMS with the XLR input connectors and crossover PCB's in the isobaric chamber.
The older pair has B110A (SP1003) midranges with Scanspeak D2008 tweeters and the later pair, B110B (SP1057) midranges with Hiquphon D-20-LP-1 tweeters. Both are unmolested with all...