MXR 400 schematic needed This topic has 0 replies, 1 voice, and was last updated 16 years, 8 months ago by Russ Lane. Viewing 1 post (of 1 total) Author Posts 15th January 2008 at 22:52 #31675 Russ LaneGuest Does anyone know of a source for a schematic to the CopperCom MXR400? Author Posts Viewing 1 post (of 1 total) The forum ‘Voice over IP’ is closed to new topics and replies.