Eighteen Sound design
Manifolded 2x21” band-pass subwoofer
- Drivers
- 21NLW9000or 21LW1400or 21NLW9600
The plans name the earlier 21NLW9000.
Enclosure designs
Eighteen Sound 21NLW9001
enclosure designs
Cabinets for the 21NLW9001: a design and a suggested box from Eighteen Sound, and flatpack kits of the Manifolded 2x21” band-pass subwoofer.
Eighteen Sound’s design
From the maker, with plans to download
Cut in the UKEighteen Sound’s suggested box
From Eighteen Sound’s 21NLW9001 page
- Net volume
- 300L
- Tuning
- 33Hz
Eighteen Sound gives the volume and tuning only; the port is yours to size.
The 21NLW9001
Specs, prices and shops for each version
Each design links to where its maker or designer publishes it. Bits hasn’t built or measured them. How we find designs. Know another design for the 21NLW9001? Tell us.