The DALI subwoofer SUB E-9 F is extremely compact with an edge length of only 30 centimetres and is recommended for expanding numerous stereo and home cinema systems such as DALI's ZENSOR and FAZON models. The combination of a 230 mm bass driver, a bass reflex system precisely tuned to the driver and the 220 watt digital power amplifier integrated in the subwoofer guarantees deep and powerful bass reproduction. The cone of the woofer is made of pure aluminium, which not only makes the cone extremely torsion-resistant and lightweight, but also gives the subwoofer an extremely sophisticated hi-tech look. The generously dimensioned rubber surround, the heavy magnet system and the solid four-layer voice coil also allow the diaphragm to make particularly long-stroke movements - an important prerequisite for vehement air movements that are supported by the bass reflex port pointing downwards. After all, the comparatively tiny woofer offers a lower cut-off frequency of 37 Hertz and a sound pressure level of up to 111 dB. The built-in digital output stage also makes a significant contribution to the high quality of the SUB E-9F. It mobilises 170 Watt continuous and 220 Watt pulse power and can be optimally adjusted to the prevailing acoustic conditions with the integrated volume and upper cut-off frequency controls (control range 40 to 120 Hertz) as well as a phase reversal switch. The DALI Sub can be controlled either via the LFE output of a home cinema receiver or with a stereo signal. The DALI SUB E-9 F is available in three different housing versions: high-quality foil surfaces in black ash, light walnut and white. The front walls are painted high-gloss black or white and contain hidden magnets that can be used to fix the front covers, which are available as optional accessories. Rounded rubber feet give the subwoofer a secure stand and acoustically uncouple it from the subsurface.