Identify these speakers

yes 0.5 MTM with 100 hz first cut-off then 600 hz... should have a low sensivity hence the active amp. Wonder why they do not used a MMT layout that is maybe more coherent about soundstage ? The designer wanted a wider soundstage perhaps with a MTM arengement. Also wonder if it is the 4 ohms or the 8 ohms version of the NE-149W for the mids ? DSP should be massive to let it climb until 3 k hz cut-off as this driver has a roll off at 1.5 k hz
 
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