Eighteen Sound design
High performance dual 21" subwoofer
- Drivers
- 2 × 21NTLW5000, 8 Ω
Enclosure designs
Eighteen Sound 21NTLW5000
enclosure designs
Cabinets for the 21NTLW5000: a design and a suggested box from Eighteen Sound, and plans builders have published.
Eighteen Sound’s design
From the maker, with plans to download
Eighteen Sound’s suggested box
From Eighteen Sound’s 21NTLW5000 page
- Net volume
- 200L
- Tuning
- 33Hz
Eighteen Sound gives the volume and tuning only; the port is yours to size.
Plans from builders
Links to published plans that name this driver
In the plan’s list of drivers
The 21NTLW5000
Specs, prices and shops for each version
- Fs
- 30Hz
- Xmax
- 17.5mm
- SPL
- 96dB
- Qts
- 0.32
- Vas
- 300L
- Pe
- 1800W
£595.00
In stock
Eighteen Sound · 21" · 8 Ω21NTLW5000
- Fs
- 31Hz
- Xmax
- 17.5mm
- SPL
- 95dB
- Qts
- 0.36
- Vas
- 270L
- Pe
- 1800W
£595.00
Stock not listedEach 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 21NTLW5000? Tell us.