Flex 18B (Discontinuation)


  • • Front-, Side-, Drum fill
  • • 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

18″ Compact Subwoofer

The Flex 18B is a compact bass reflex system and has been developed to be combined with the Flex 8, Flex 12 and Flex 15 mid-high units.

Thanks to its neodymium speaker, it is characterized by its extremely compact dimensions and its light weight. The Flex 18B subwoofer can be equipped with an optional switchable passive crossover offering sophisticated high-pass and lowpass filtering, enabling the use of compact satellite systems without additional electronics.

Call us for a demonstration


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


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

See other speakers from the Flex-Series

Get an overview of other professionel loudspeaker from our company. If you have any questions, please do not hesitate to contact us. Current prices for the Flex 18B 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
18“ neodymium long excursion woofer
Frequency Response
39 Hz–250 Hz +/-3 dB
Power handling RMS | peak
500 W RMS | 2.000 W Peak
Nominal Impedance
8 Ω
Dispersion pattern
96 dB
129 dB | peak | 1 m
NL4: 2+/2-
Dimensions (w x h x d)
500 x 600 x 700 mm
net weight
34 kg
Wheel-set, transport cover, passive XO

Flex18B – Passiv X-Over

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

Flex18B – Padded Cover

Padded cover for 18 "subwoofer, made of polyester and with AD-system imprint. Order number: 7011000142

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