i.Flex 15B

The i.Flex15B bass reflex system with its 15-inch long-stroke loudspeaker serves as a bass support for PA systems of all kinds


  • • Fixed installation for any kind of PA System
  • • Sub and Lo Extension for all kind of speakers

15″ Subwoofer

The i.Flex 15B is a bass-reflex system and was specially designed to be combined with the other models of the AD-Systems i.flex-Series. It extends the frequency range of the i.flex models to 38 Hz and withstands continuous power of 750 Watts / 3,000 Watts (RMS / peak).

The i.Flex 15B has powerful, low distortion features and offers natural reproduction. It is designed for use with an external active crossover. The enclosure is made from birch plywood and is painted impact-proof. The front is protected by a rugged grille. It is also covered with interchangeable acoustic foam. Option: passive X-Over for i.Flex 15B.


• Fixed installation for any kind of PA-System
• Sub- and Lo Extension for all kind of speakers


• 15″ long-excursion woofer with 4″ voice coil
• Power handling: 750 Watts RMS | 3,000 Watts Peak
• Rated protection class IP-54
• 2 Neutrik Speakon NL4 connectors
• Colours: Black, similar RAL 9005
• Optional colours: RAL or NCS

Call us for more informations

See other speakers from the i.Flex-Series

Get an overview of other outdoor and indoor subwoofer solutions from AD-Systems. If you have any questions, please do not hesitate to contact us. Current prices for the i.Flex 15B 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
Bass-Reflex tuning
Protective Grille
1.5 mm grille, covered with acoustic foam
15″ long-excursion woofer with 4″ voice coil
Frequency Response
42 Hz–250 Hz
Power handling RMS | peak
750 Watt RMS | 3,000 Watt Peak
Nominal Impedance
8 Ω
Dispersion pattern
94 dB
130 dB | peak | 1 m
2 Neutrik Speakon NL4: 2+/2-
Dimensions (w x h x d)
45 x 50 x 58 mm
net weight
29 kg

iFlex15B – Accessories

Optional equipment: 70V/100V, Outdoor Finish, RAL Colours

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