Das Bassreflexsystem i.Flex15B mit seinem 15 Zoll Langhublautsprecher dient als Bassunterstützung für PA-Systeme jeglicher Art


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

The i.Flex15B and the i.Flex18B 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 the lowest range of 38 Hz and withstands a continuous power of 750 W/3.000 W (RMS / peak).


The i.Flex15B and the i.Flex18B has powerful, low distortion features and offers natural reproduction. It necessitates the use of an external active crossover.

The enclosures are made from birch plywood and are 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.Flex15B

15 mm birch plywood with structure paintg
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 W RMS | 3.000 W Peak
Nominal Impedance
8 Ω
Dispersion pattern
94 dB
130 dB | peak | 1 m
NL4: 2+/2-
Dimensions (w x h x d)
450 x 500 x 580 mm
net weight
29 kg
100V transformer,
special paint RAL colours