The boards for the subwoofer are glued (butt jointed) as shown in the drawing and subsequently the openings cut out. The fabric tensioning frame is fixed to the cabinet using wooden frame plugs.
The jumpers have to be removed from the twin terminals because one pair of connections is used for the right channel and the other pair for the left channel.
The damping material is distributed uniformly inside the subwoofercabinet but leaving the space behind the bass reflex tube free.
Cabinet parts list for 1 box
"The NANO system demonstrated clearly in the HOBBY HiFi test chamber that it music is a thing to be enjoyed. The response was extremely lively. But there was not the slightest hint of overdone effects..."
"Particularly impressive was the dynamism that the subwoofer satellite system is evidently capable of. Anyone would agree that the bass unit has excellent level accuracy, but the satellites left us gasping for breath."
"NANO is the solution where you want loudspeakers that are smaller than small." ... "However, you will not need to compromise sound quality: this speaker system can take its place at the top of the quality range."