Bill Fitzmaurice Simplexx DIY Flat Pack Subwoofer Speaker Kit
MartyCube by GSG(TM) Flat Pack Subwoofer – GSG Audio Design
Denovo Audio – High end audio products for the DIY community.
Servo Sealed” Flatpack (Single) | GR-Research
Open Baffle Subwoofer Flat Pack (LXsub2)
Gately Audio - Flat Pack 2 12” 3.6cf
18" Subwoofer Flat Pack (Coming Soon) — Western Ridge CNC
Blue Aran - This is a complete flat-pack kit designed to build a subwoofer cabinet for the JAM Systems S118 speaker and accommodate an 18 inch driver. Every panel has been CNC