The Flex15B is a compact bass reflex loudspeaker with 15" neodymium long stroke loudspeaker


  • • Front-, Side-, Drumfill
  • • Fixed installation
  • • PA-System for clubs, discotheques, mobile DJs
  • • bass extension for PA-systems of any kind
  • • High-power compact subwoofer
  • • Weight reduced neodymium speakers

Compact subwoofer Flex15B

The Flex15B is an compact bass reflex systems and have been developed to be combined with the Flex-Series mid high units Flex8, Flex12 and Flex15.

Thanks to its neodymium speaker, it is characterized by its extremely compact dimensions and its light weight. The Flex15B subwoofer can be equipped with an optional switchable passive crossover offering sophisticated high-pass and lowpass filtering and therewith enabling the use of compact satellite systems without additional electronics.


• High-power compact subwoofer
• Fixed installation
• Front-, Side-, Drumfill
• PA-System for clubs, discotheques, mobile DJs
• Bass extension for PA-systems of any kind
• Weight reduced neodymium subwoofer


• 15“ Neodymium long excursion woofer
• Power handling: 500 W RMS | 2,000 W Peak

See other speakers from the Flex-Series

Get an overview of other loudspeaker systems from our company. If you have any questions, please do not hesitate to contact us. Actual prices for the Flex15B subwoofer as well as the current product catalog are available on request.

15 mm birch polywood with structure paint
Basic layout
subwoofer, bass-reflex tuning
Protective Grille
1.5 mm grille, covered with acoustic foam
15“ neodymium long excursion woofer
Frequency Response
43 Hz–500 Hz
Power handling RMS | peak
500 W RMS | 2,000 W Peak
Nominal Impedance
8 Ω
Dispersion pattern
95 dB
128 dB | peak | 1 m
NL4: 2+/2-
Dimensions (w x h x d)
450 x 500 x 580 mm
net weight
22 kg
Wheel-set, transport cover passive XO

Flex15B – Passiv X-Over

Option switchable passive X-Over with Lo-Cut output. Order number: 7100000668

Flex15B – Padded Cover

Padded cover for 15 "subwoofer, made of polyester and with AD-system imprint. Order number: 7011000034