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Description

TWAUDiO's biggest subwoofer to date, the Big Subwoofer eXtender (BSX) employs two immensely powerful 21" drivers, each delivering 7.2 kW peak, to create a massive low-end foundation for the biggest of systems.

Even in the biggest of stadiums, the hybrid design of the BSX ensures that this true sub bass extension will be felt as well as heard.

The use of extremely stiff yet lightweight membranes allows the BSX to deliver frequencies of up to 120 Hz with no sacrifice in fidelity.

As a full range sub, the BSX is fully compatible with all TWAUDiO series.

BSX Serious low throw.

Technical data

Drivers2 × 21"
Frequency range27 – 120 Hz
Power capacity program / peak2 × 3600 W / 2 × 7200 W
Impedance2 × 4 Ω
Coverageomni
Sensitivity 1 W / 1 m99 dB
SPLmax / 1 m142 dB
ConnectionDriver 1: NL4 2±
Driver 2: NL4 1±
Dimensions (H × W × D)606 × 1406 × 900 mm (without castors) [23.86 × 55.35 × 35.43 in]
Weight109 kg [240 lbs]
FinishPolyurea coating, black
AccessoriesFDBSX, CoverBSX
OptionsWarnex texture paint, RAL colors

Downloads

TWERiFY NFC

TWERiFY NFC TAG Position Guide EN (PDF - File)
5. February 2025 - Revision 1.2

Vectorworks

Vectorworks TWAUDiO Database Touring (ZIP - File)
10. September 2025 - Revision 0.6

Documentation

BSX Architect Specifications EN (ZIP - File)
20. August 2025 - Revision 4.0
BSX manual EN (PDF - File)
30. October 2023 - Revision 2.2
BSX Quick Setup Guide (PDF - File)
20. February 2019 - Revision 1.1

Drawings

BSX PDF Drawings (PDF - File)
17. July 2025 - Revision 3
BSX DXF 2D (ZIP - File)
30. June 2023 - Revision 2

Simulation

BSX-vertical (GLL - File)
22. September 2025 - Revision 2.2
BSX-horizontal (GLL - File)
22. September 2025 - Revision 2.2

Accessories BSX

References BSX

A celebration of music and emotion La Raíz on tour with TW AUDiO

On May 24, 2025, the Recinto Ferial de Mislata, Valencia, became a true epicenter of live music. Around 20,000 people gathered to celebrate the energetic open-air concert by the iconic Spanish band La Raíz. SIMES Audio and Soinua deployed an impressive TWAUDiO system, meticulously planned and fine-tuned.

BOSS Nightclub A New Sound Experience in Pattaya

The BOSS Nightclub has recently opened in Pattaya, Thailand, bringing a fresh and vibrant energy to the region’s nightlife. The venue seamlessly blends Bollywood performances with an exciting club atmosphere, featuring resident and international DJs as well as live acts. With two spacious dance floors and twelve exclusive VIP areas, the club offers a premium experience—enhanced by a high-quality TWAUDiO sound system.
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