Der Bassreflexlautsprecher i.Flex18B verfügt über einen 18“ Langhublautsprecher mit 100 mm Schwingspule


  • • 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.

15 mm birch plywood with structure paint
Basic layout
bass-reflex tuning
Protective Grille
1.5 mm grille, covered with acoustic foam
18“ long excursion woofer with 4“ voice coil
Frequency Response
38 Hz–250 Hz
Power handling RMS | peak
800 W RMS | 3.200 W Peak
Nominal Impedance
8 Ω
Dispersion pattern
96 dB
132 dB I peak I 1m
NL4: 2+/2-
Dimensions (w x h x d)
500 x 600 x 700 mm
net weight
38 kg
100V transformer,
special paint RAL colours