Flex 15B

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

15″ Compact Subwoofer

The Flex 15B is a compact bass reflex system developed to be combined with the Flex 8, Flex 12 and Flex 15 mid high units.

Characterized by its extremely compact dimensions and its light weight, (thanks to its neodymium speaker), the Flex 15B subwoofer can be equipped with a switchable passive crossover to offer sophisticated high-pass and lowpass filtering, thereby enabling the use of compact satellite systems without additional electronics.


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


• 15″ Neodymium long excursion woofer
• Rated protection class IP-54
• Power handling: 500 Watts RMS | 2,000 Watts Peak

Call us for more informations

See other speakers from the Flex-Series

Get an overview of other commercial loudspeaker from AD-Systems. If you have any questions, please do not hesitate to contact us. Current prices for the Flex15B subwoofer as well as the current product catalog are available on request.

15 mm birch plywood with structure paint
AD-Systems loudspeakers are rated protection class IP-54
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

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