TW-Audio B17i The compact installation subwoofer.


The B17i is a compact installation subwoofer in a symmetrically vented enclosure, equipped with one 18″ long excursion driver.

The fully symmetrical enclosure design enables identical performance with all set-up variations. Also directional sub arrays with partly reversed subwoofers are unrestrictedly possible in all combinations. Whether upright or crosswise, stacked on top of each other or side- by-side.

The B17i comes with i-series standard screw terminal connections
at the rear with optional speakONTM and cable gland available. Four recessed M10 threads allow multiple mounting options via brackets or steel wires.

Clubs, bars, restaurants, theatres, Conference rooms or churches & TV studios

Key features

  • Installation subwoofer in a compact, symmetrically vented enclosure
  • 18″ long excursion chassis with 4″ voice coil and 2400 W program power capacity
  • 4 × M10 screw threads for mounting of swivel bracket and eyebolt
  • Equipped with i-series screw terminal; speakONTM and cable gland optional
  • Coherent phase response with all TW AUDiO subwoofers
  • Operation with dedicated TW AUDiO presets on Lab.gruppen PLM/D or Powersoft K/X series


Technical data

Drivers 1 × 18″ LF
Frequency range 37 Hz – 110* Hz
Power capacity program / peak 2400 / 4800 W
Impedance 8 Ω
Coverage omni
Sensitivity 1 W / 1 m 96 dB
SPL max / 1 m 132 dB
Connection screw terminal IN± | LINK±
Optional connections speakON™ NL4

cable gland

Dimensions (H × W × D) 500 × 600 × 600 mm

19.7 × 23.6 × 23.6 in [19.69 × 23.62 × 23.62 × 0.93 × 0.93 in]

Weight 34 kg | 75 lbs [75 lbs]
Finish Warnex texture paint
Accessories RSM10
Options RAL colors, polyurea coating (black)
  *With dedicated presets a frequency of up to 200 Hz can be achieved.

References B17i

High energy at Jalou with TW AUDiOs M10
3. December 2018
Originally launched in Newcastle Upon Tyne, the nightclub-style bar recently spearheaded a planned country-wide expansion by opening in York. Now, both Jalou sites have been completed with powerful but precise sound reinforcement courtesy of TW AUDiO.

Catching the perfect (sound)wave at Wavehouse Dubai
1. July 2019
In total 63 TW AUDiO loudspeakers have been deployed across Wavehouse in an installation project that ran for just 12 weeks.