So far the Big-Subwoofer-eXtender is the biggest TW AUDiO sub to date.

Equipped with two powerful 21" drivers with a peak performance potential of 10 kW per driver, this speaker is able to reproduce a truly massive bass foundation.

Thanks to the hybrid enclosure principle its efficiency is maximised so that the energy is still perceptible even at a great distance. Primarily the BSX functions as a true sub bass extension.

Because of its extremely stiff yet lightweight membranes the BSX is able to deliver frequencies of up to 120 Hz clean and true to its impulses. As a full range sub the BSX is directly combinable with the M, T, C or VERA systems.

BSX Serious low throw.

Technical data

Drivers2 × 21"
Frequency range27 – 120 Hz
Power capacity program / peak2× 3600 W / 2 × 10000 W
Impedance2 × 4 Ohms
Sensitivity 1 W / 1 m99 dB
SPLmax / 1 m142 dB
ConnectionDriver 1: NL4 2±
Driver 2: NL4 1±
Dimensions (H x W x D)606 × 1406 × 900 mm (without castors) [23.86 × 55.35 × 35.43 in]
Weight109 kg [240 lbs]
FinishPolyurea coating
AccessoriesFDBSX, CoverBSX
OptionsRAL colors (Warnex texture paint)



BSX_manual_EN_1.1 (PDF - File)
13. October 2016 - Revision 1.1
BSX Quick Setup Guide (PDF - File)
22. March 2016 - Revision 1.0


BSX DXF 2D (ZIP - File)
22. March 2016 - Revision 1.0
BSX PDF Drawings (PDF - File)
22. March 2016 - Revision 1.0


BSX-vertical (GLL - File)
17. May 2017 - Revision 2.2
BSX-horizontal (GLL - File)
17. May 2017 - Revision 2.2

Accessories BSX

References BSX

Daughtry rocks Kuala Lumpur with TW AUDiO

Returning to Malaysia for the first time in 10 years, US rock band Daughtry recently played a sold out show at prestigious Kuala Lumpur venue KL Live.

TW AUDiO returns for biggest ever Giessener Kultursommer

Drawing more than 30,000 people to the beautiful surroundings of Schiffenberg Abbey in the central German town of Giessen, the Giessener Kultursommer festival recently returned for its fourth and largest outing to date.
More about
View and download the TW AUDiO catalogue.
View catalogue
Hotline support:
+49 7141 488 989-55
Office Ludwigsburg
Osterholzallee 140 - 2 / D-71636 Ludwigsburg

So we do use cookies - SURPRISE! By using the site, you agree to the use of cookies by us and by third-party plugins More Infos

Cookie Meldung

Wenn Du diese Website ohne Änderung der Cookie-Einstellungen verwendest, werden Drittanbieter Cookies von Youtube, Vimeo, Google Maps und weitere geblockt. Das heisst nicht alle Funktionen dieser Website stehen in vollem Umfang zur Verfügung. Wenn Du auf "Akzeptieren" klickst, erklärst Du dich mit der Nutzung der Drittanbieterplugins einverstanden. Datenschutzerklärung