Here is another thread speculating about them... I think there may have been a DIY thread about them too.
http://www.audioheritage.org/vbulletin/showthread.php?40571-New-Passive-M2s-from-PBN-Audio...
Type: Posts; User: Mr. Widget; Keyword(s):
Here is another thread speculating about them... I think there may have been a DIY thread about them too.
http://www.audioheritage.org/vbulletin/showthread.php?40571-New-Passive-M2s-from-PBN-Audio...